Goal
Technologies
HOME AUTOMATION
DEVICES
IEEE PROJECTS 201011-12
Embedded
AND
SECURITY
FOR
MOBILE
ABSTRACT
As mobile devices continue to grow in popularity and
functionality, the demand for advanced ubiquitous mobile
applications in our daily lives also increases. This paper
deals with the design and implementation of HASec, a
Home Automation and Security system for mobile devices,
that leverages mobile technology to provide essential
security to our homes and associated control operations.
In particular, with the help of mobile devices, HASec
operates and controls motion detectors and video cameras
for remote sensing and surveillance, streams live video
and records it for future playback, and finally manages
operations on home appliances, such as turning ON/OFF a
television or microwave or altering the intensity of lighting
around the house.
The proposed home security solution hinges on our novel
integration of cameras and motion detectors into a mobile
application. For instance, when motion is detected, the
cameras automatically initiate recording and the iOS
device alerts the homeowner of the possible intrusion.
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Technologies
IEEE PROJECTS 201011-12
Embedded
HASec has two main components interacting with each
other: the iOS application that executes on the mobile
device and server-side scripts that run in a cloud.
Although HA-Sec is implemented for Apple's iOS devices
such as iPhone, iPod Touch, and iPad, it can be easily
ported to other mobile platforms. Furthermore, our
application is not only limited to smart-phones but also
can be used by feature phones through their browsers.
DESIGN AND DEVELOPMENT OF MICROCONTROLLER
BASED ELECTRONIC QUEUE CONTROL SYSTEMS
ABSTRACT
In this work, low-cost, portable microcontroller based
electronic queue control (EQC) systems have been
developed for the purpose of controlling queue in banking,
hotel reservation counter, ticket counter, insurance
company, customer service center etc. The aim of the
designed systems is to maintain a queue with order and
efficiency.
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IEEE PROJECTS 201011-12
Embedded
Two different queue control systems have been
implemented with slightly different features. In EQC
system-1, a general display has been used for displaying
token number and service counter number whereas in EQC
system-2, each token number has been displayed
individually in each service counter with separate displays.
In the both systems, each customer has to collect a token
and then will be served whenever the token number is
displayed. The systems were designed around a 16F72 IC,
a low-cost 8-bit PIC microcontroller and entirely software
controlled.
The control programs have been developed using the PIC
assembly language. Finally, the systems have been tested
under different conditions to evaluate their performance.
DESIGN AND IMPLEMENTATION OF PYROELECTRIC
INFRARED SENSOR BASED SECURITY SYSTEM USING
MICROCONTROLLER
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Technologies
IEEE PROJECTS 201011-12
Embedded
ABSTRACT
This paper evaluates the development of a Low-cost
security system using small PIR (Pyroelectric Infrared)
sensor built around a microcontroller. The low-power PIR
detectors take advantage of pyroelectricity to detect a
human body that is a constant source of Passive Infrared
(radiation in the infrared region).
The system senses the signal generated by PIR sensor
detecting the presence of individuals not at thermal
equilibrium with the surrounding environment. Detecting
the presence of any unauthorized person in any specific
time interval, it triggers an alarm & sets up a call to a
predefined number through a GSM modem.
This highly reactive approach has low computational
requirement, therefore it is well-suited to surveillance,
industrial applications and smart environments. Tests
performed gave promising results.
ACCELEROMETER
ASSISTED
HIGH
BANDWIDTH
CONTROL OF TIP-TILT MIRROR FOR PRECISION
POINTING STABILITY
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Embedded
ABSTRACT
Pointing stability that defines acceptable displacement of
an observation target on the optical detector during the
exposure time in a satellite telescope system largely
dominates the quality of the image. This research
proposes a new control approach to improve pointing
stability using a tip-tilt mirror.
While conventional control systems for a tip-tilt mirror use
feedback error signals obtained from the optical detector,
the signal loses enough bandwidth to compensate for high
frequency disturbances when pointing at a dark reference
guide star.
This paper presents a control system subsidiarily using
accelerometers to generate high bandwidth feedforward
control references to a tip-tilt mirror by properly
identifying transfer function between acceleration and
pointing displacement. The numerical simulation and
experiments using a disturbance source and a tip-tilt
mirror verifies feasibility of this method.
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CONTROL OF BRUSHLESS DC MOTOR WITH AN AVR
MICROCONTROLLER
ABSTRACT
This paper illustrates the basic work principle of a
brushless DC motor and presents its control method.
According to the method, a control system of a brushless
DC Motor is designed using an AVR microcontroller.
Design of the control system includes hardware circuit
designing and software programming.
The hardware structure of the control system consists of a
microcontroller ATmega64, power supply circuit, position
detection circuit, current chopper circuit, power driving
circuit, display circuit and keyboard circuit and so on.
The software is developed by c program language. The
software includes main program, initialization program,
PWM duty ratio reload program, speed calculation
program, closed-loop PID regulation program, interrupt
service program, LCD display program, keyboard program
etc.
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The experiment result shows that the system is with an
excellent dynamic and static performance. Its operation is
reliable.
MICROCONTROLLER BASED ON-BOARD
(OBD) SYSTEM FOR NON-OBD VEHICLES
DIAGNOSTIC
ABSTRACT
This paper proposes the development
Diagnostic (OBD) system for automobiles.
of
On-Board
The proposed OBD system has a microcontroller based
processing system and consists of
(1) sensors installed at different parts of vehicle to observe
various parameters,
(2) processing unit that will take input from the sensors
and signal conditioners, calculate the real-time values of
vehicle parameters and give output and
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(3) user interface. System will be able to diagnose faults in
parameters, abnormal abrupt changes, notify user of any
abnormal condition, and in some cases indicate the cause
of fault.
This system is designed basically to be implemented on
vehicles that do not have factory installed OBD systems,
and can be easily fitted without major modifications to the
vehicle.
It is user friendly system with LCD and keypad interface
though which user can view parameter values, warning
notifications and define custom limits for different
parameters according to vehicle (other than default
values).
A MICROCONTROLLER BASED MULTI-FUNCTION
SOLAR TRACKING SYSTEM
ABSTRACT
Renewable energy solutions are becoming increasingly
popular. Photovoltaic (solar) systems are but one example.
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Maximizing power output from a solar system is desirable
to increase efficiency.
In order to maximize power output from solar panels, one
needs to keep the panels aligned with the sun. As such, a
means of tracking the sun is required. This is definitely a
more cost effective solution than purchasing additional
solar panels. It has been estimated that the yield from
solar panels can be increased by 30 to 60 percent by
utilizing a tracking system instead of a stationary array.
In this paper, a prototype for a microcontroller-based
multi-function solar tracking system is described, which
will keep the solar panels aligned with the sun in order to
maximize efficiency.
The maximum power point tracking (MPPT) data can be
transmitted in real time to other solar systems in need of
this data.
ARM9-BASED EMBEDDED CONTROLLER
OF THE BOILER COMBUSTION
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Embedded
ABSTRACT
Mainly based on a research of controlling the boiler
combustion system with the boiler steam pressure, this
paper will exploit a controlling system which is basing on
the ARM9 embedded boiler combustion controller, for
achieving a more accurate control to the burner.
Using the ARM920T kernel 16/32 RISC embedded
microprocessor, this system realizes the design of
hardware system by being around its periphery. With
embedded operating system for Linux environment resume
and QT/Embedded for GUI support system, it has its
application development.
WEIGHING SYSTEM OF FRUIT-TRANSPORTATION
GYROCAR BASED ON ARM
ABSTRACT
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Embedded
The pilot less fruit-transportation gyro car works in the
economic forest, avoiding the obstacle on the rail is the
prerequisite of its safe working. An ultrasonic obstacle
avoidance system of fruit-transportation gyro car based on
ARM embedded system is introduced in this article.
The functions of the system are implemented. It could
make the gyro car stop when detect an obstacle and sends
the information of obstacle to the monitoring client
through GPRS. Through the test, the ultrasonic obstacle
avoidance system performs well and reliable.
ARM9 MULTI-TASK DATA ACQUISITION SYSTEM
INTELLIGENT IMPROVEMENT
ABSTRACT
In this paper the improvement plan has been proposed to
deal with such shortcomings exists in ARM9 and ?C/OS-II
real-time multi-tasking data acquisition system, in which
task competition exist, the slow implementation of
peripherals, in time update cannot be made.
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Achieved sampling channel priority dynamic scheduling,
real-time parameters acquisition have been set up here.
Peripherals operation which constraints of the system
performance on the were time optimized, improved the
system efficiency, system security, and task synchronous.
There briefly illustrated the system frequency limit tests
and detail sampling data display on user interface.
POWER HARVESTING FOR SMART SENSOR NETWORKS
IN MONITORING WATER DISTRIBUTION SYSTEM
ABSTRACT
Recently, there has been a growing interest in using
wireless sensor networks for monitoring water distribution
infrastructure to help drinking water utilities to have better
understanding of hydraulic and water quality statement of
their underground assets.
One of the challenges is limited power resources for
operating the smart sensors and sensor networks. Current
common used power supplies for sensor node are
batteries. Batteries have many drawbacks such as short
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life time and need to be replaced on regular basis which is
uneconomical and unmanageable in hard access
environment such as buried underground water pipelines.
Energy harvesting of ambient energy in the water pipeline
and powering wireless sensor node including sensing,
processing, and communications would be particularly
attractive option because the life time of the node will be
potentially infinite for supporting wireless sensor
networks.
The paper will review and discuss the potential of using
power harvesting techniques for monitoring water
distribution networks and the work done in the area of
monitoring water distribution systems using smart sensor
networks.
A
NOVEL
LIGHT-SENSOR-BASED
INFORMATION
TRANSMISSION SYSTEM FOR INDOOR POSITIONING AND
NAVIGATION
ABSTRACT
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This paper describes a novel light-sensor-based
information transmission system for indoor positioning
and navigation with particular benefits for mobile and
wearable computers. It can seamlessly extend outdoor
GPS tracking to the indoor environment.
In a novel manner, fluorescent light is used as the medium
to transmit information, which is encoded by using a
pulse-frequency modulation technique. The user receives
the encoded light information through a photoreceiver.
The information is passed into the wearable or mobile
computer after the data are decoded.
This information allows positioning information to be
given to indoor mobile and wearable computers. We
design an economical transmitter circuit by adding a few
components to a commercial electronic ballast circuit for
fluorescent lamps with a price of less than 10 USD.
The proposed system can be used in indoor guidance and
navigation applications. Exemplary applications are
included in the paper, with experimented results detailed.
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AUTONOMOUS PEDESTRIAN COLLISION
USING A FUZZY STEERING CONTROLLER
AVOIDANCE
ABSTRACT
Collision avoidance is one of the most difficult and
challenging automatic driving operations in the domain of
intelligent vehicles. In emergency situations, human
drivers are more likely to brake than to steer, although the
optimal maneuver would, more frequently, be steering
alone.
This statement suggests the use of automatic steering as a
promising solution to avoid accidents in the future. The
objective of this paper is to provide a collision avoidance
system (CAS) for autonomous vehicles, focusing on
pedestrian collision avoidance. The detection component
involves a stereo-vision-based pedestrian detection
system that provides suitable measurements of the time to
collision.
The collision avoidance maneuver is performed using
fuzzy controllers for the actuators that mimic human
behavior and reactions, along with a high-precision Global
Positioning System (GPS), which provides the information
needed for the autonomous navigation.
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The proposed system is evaluated in two steps. First,
drivers' behavior and sensor accuracy are studied in
experiments carried out by manual driving. This study will
be used to define the parameters of the second step, in
which automatic pedestrian collision avoidance is carried
out at speeds of up to 30 km/h. The performed field tests
provided encouraging results and proved the viability of
the proposed approach.
THE INTELLIGENT EMBEDDED CONTROL
WARNING SYSTEM FOR CAR REVERSING
ABSTRACT
Most of the car drivers used the reverse radar or a reverse
camera to detect the road situation behind the vehicle
when it is engaged in reverse gear. As a matter of fact, the
pedestrians can virtually know if the vehicle is backing up
or not only by seeing the permanent bright reverse lamps.
And as there is not much change with the reverse lamp to
be seen, therefore their warning function for pedestrians
seems to be still insufficient eventually.
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Therefore, this research tries to design a set of embedded
intelligent car backup warning system so as to promote
the safety of the walkers or the other drivers on the road.
This embedded system uses Microsoft Win CE operating
system and matches with the Mini2440 developing board. It
also uses the Visual Studio 2005 for developing the
intelligent touch panel operating mode.
The UART interface on the Mini 2440 developing board
controls the frequency converter, RC server and LED by
using PIC16F877 to transform the signal of the sensors.
And then, connecting to the sensors of angle, luminosity
and distance so as to read the voltage value of the sensor
and transferring them into actual values and followed by
using 27 fuzzy logic rules to carry on the fuzzy logic
deduction. And the angle of the LED reverse lamp bracket
is adjusted and driven automatically according to the
results of this logic deduction eventually.
This research tries to do the simulated test by using a
mobile frame in the same height as a real automobile. To
let the test mobile frame being located 240 cm away from
the obstacle and then start the driven motor and set the
frequency of it to be with 60 Hz. (in other words, its speed
is approximately in 2.52 Km/h.) the let the test mobile
frame to stop at 40 cm in front of the obstacle.
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We found out that the warning lamp bracket installation
angle will be changed correspondently with the distance
between test mobile frame and obstacle and being
declined automatically from 90 degree to 0 degree.
Apparently, from th- - e test results, it has been proven
that this system can reach the goal of automatically
controlled car back-up warning function truly.
ADVANCEMENTS IN NONCONTACT, MULTIPARAMETER
PHYSIOLOGICAL MEASUREMENTS USING A WEBCAM
ABSTRACT
We present a simple, low-cost method for measuring
multiple physiological parameters using a basic webcam.
By applying independent component analysis on the color
channels in video recordings, we extracted the blood
volume pulse from the facial regions.
Heart rate (HR), respiratory rate, and HR variability (HRV,
an index for cardiac autonomic activity) were subsequently
quantified and compared to corresponding measurements
using Food and Drug Administration-approved sensors.
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High degrees of agreement were achieved between the
measurements across all physiological parameters. This
technology has significant potential for advancing
personal health care and telemedicine.
CLOSED-LOOP ANESTHETIC DRUG CONCENTRATION
ESTIMATION USING CLINICAL-EFFECT FEEDBACK
ABSTRACT
This letter presents a novel closed-loop approach to
anesthetic drug concentration estimation using clinicaleffect measurement feedback. Compared with the openloop prediction used in current target-controlled infusion
systems, closed-loop estimation exploits the discrepancy
between the measured and predicted clinical effects to
make corrections to the drug-concentration estimate,
achieving improved robustness against variability in the
patient pharmacokinetics and pharmacodynamics.
A robust estimator, which processes drug administration
and clinical-effect measurements to estimate the plasmaand effect-site drug concentrations, is designed using -
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synthesis theory. Initial proof of principle of the closedloop estimation is demonstrated using the Monte Carlo
simulation of surgical procedures with a wide range of
patient models.
Closed-loop estimation results in statistically significant
reductions in median percentage, median absolute
percentage, and maximum absolute percentage drugconcentration errors compared to open-loop prediction.
MULTIPLE FUNCTIONAL ECG SIGNAL IS
PROCESSING FOR WEARABLE
APPLICATIONS OF LONG-TERM CARDIAC MONITORING
ABSTRACT
In this paper, an integrated electrocardiogram (ECG)
signal-processing scheme is proposed. Using a systematic
wavelet transform algorithm, this signal-processing
scheme can realize multiple functions in real time,
including baseline-drift removal, noise suppression, QRS
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detection, heart beat rate prediction and classification, and
clean ECG reconstruction.
Utilizing the novel low-cost hardware architecture, the
proposed ECG signal-processing scheme is implemented
in application-specific integrated circuits with 0.18 ?m
CMOS technology.
This ECG signal-processor chip achieves low area and
power consumptions, and is highly suitable for wearable
applications of long-term cardiac monitoring.
HEARTBEAT
CLASSIFICATION
USING
FEATURE
SELECTION DRIVEN BY DATABASE GENERALIZATION
CRITERIA
ABSTRACT
In this paper, we studied and validated a simple heart beat
classifier based on ECG feature models selected with the
focus on an improved generalization capability. We
considered features from the RR series, as well as features
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computed from the ECG samples and different scales of
the wavelet transform, at both avail able leads.
The classification performance and generalization were
studied using publicly available databases: the MIT-BIH
Arrhythmia, the MIT-BIH Supraventricular Arrhythmia, and
the St. Pe tersburg Institute of Cardiological Technics
(INCART) databases. The Association for the Advancement
of Medical Instrumentation recommendations for class
labeling and results presentation were followed.
A floating feature selection algorithm was used to obtain
the best performing and generalizing models in the
training and validation sets for different search
configurations. The best model found comprehends eight
features, was trained in a partition of the MIT-BIH
Arrhythmia, and was evaluated in a completely disjoint
partition of the same database.
The results obtained were: global accuracy of 93%; for
normal beats, sensitivity (S) 95%, positive predictive value
(P+) 98%; for supraventricular beats, S 11%, P+ 39%; and
for ventricular beats S 81%, P+ 87%. In order to test the
generalization capability, performance was also evaluated
in the INCART, with results comparable to those obtained
in the test set.
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This classifier model has fewer features and performs
better than other state-of-the-art methods with results
suggesting better generalization capability.
MONITORING
OF
POSTURE
ALLOCATIONS
AND
ACTIVITIES BY A SHOE-BASED WEARABLE SENSOR
ABSTRACT
Monitoring of posture allocations and activities enables
accurate estimation of energy expenditure and may aid in
obesity prevention and treatment. At present, accurate
devices rely on multiple sensors distributed on the body
and thus may be too obtrusive for everyday use.
This paper presents a novel wearable sensor, which is
capable of very accurate recognition of common postures
and activities. The patterns of heel acceleration and
plantar pressure uniquely characterize postures and
typical activities while requiring minimal preprocessing
and no feature extraction. The shoe sensor was tested in
nine adults performing sitting and standing postures and
while walking, running, stair ascent/descent and cycling.
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Support vector machines (SVMs) were used for
classification. A fourfold validation of a six-class subjectindependent group model showed 95.2% average accuracy
of posture/activity classification on full sensor set and
over 98% on optimized sensor set.
Using a combination of acceleration/pressure also enabled
a pronounced reduction of the sampling frequency (25 to 1
Hz) with out significant loss of accuracy (98% versus 93%).
Subjects had shoe sizes (US) M9.5-11 and W7-9 and body
mass index from 18.1 to 39.4 kg/m2 and thus suggesting
that the device can be used by individuals with varying
anthropometric characteristics.
A WEB-BASED SYSTEM FOR HOME MONITORING OF
PATIENTS
WITH
PARKINSON'S
DISEASE
USING
WEARABLE SENSORS
ABSTRACT
This letter introduces MercuryLive, a platform to enable
home monitoring of patients with Parkinson's disease (PD)
using wearable sensors. MercuryLive contains three tiers:
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a resource-aware data collection engine that relies upon
wearable sensors, web services for live streaming and
storage of sensor data, and a web-based graphical user
interface client with video conferencing capability.
Besides, the platform has the capability of analyzing
sensor (i.e., accelerometer) data to reliably estimate
clinical scores capturing the severity of tremor,
bradykinesia, and dyskinesia.
Testing results showed an average data latency of less
than 400 ms and video latency of about 200 ms with video
frame rate of about 13 frames/s when 800 kb/s of
bandwidth were available and we used a 40% video
compression, and data feature upload requiring 1 min of
extra time following a 10 min interactive session.
These results indicate that the proposed platform is
suitable to monitor patients with PD to facilitate the
titration of medications in the late stages of the disease.
MAPPING AND PURSUIT-EVASION STRATEGIES FOR A
SIMPLE WALL-FOLLOWING ROBOT
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ABSTRACT
This paper defines and analyzes a simple robot with local
sensors that moves in an unknown polygonal
environment. The robot can execute wall-following
motions and can traverse the interior of the environment
only when following parallel to an edge.
The robot has no global sensors that would allow precise
mapping or localization. Special information spaces are
introduced for this particular model.
Using these, strategies are presented to solve several
tasks:
1) counting vertices,
2) computing the path winding number,
3) learning a combinatorial map, which is called the cut
ordering, that encodes partial geometric information, and
4) solving pursuit-evasion problems.
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METHODS
AND
TECHNOLOGIES
FOR
THE
IMPLEMENTATION OF LARGE-SCALE ROBOT TACTILE
SENSORS
ABSTRACT
Even though the sense of touch is crucial for humans,
most humanoid robots lack tactile sensing. While a large
number of sensing technologies exist, it is not trivial to
incorporate them into a robot. We have developed a
compliant “skin” for humanoids that integrates a
distributed pressure sensor based on capacitive
technology.
The skin is modular and can be deployed on nonflat
surfaces. Each module scans locally a limited number of
tactile-sensing elements and sends the data through a
serial bus. This is a critical advantage as it reduces the
number of wires.
The resulting system is compact and has been
successfully integrated into three different humanoid
robots. We have performed tests that show that the sensor
has favorable characteristics and implemented algorithms
to compensate the hysteresis and drift of the sensor.
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Experiments with the humanoid robot iCub prove that the
sensors can be used to grasp unmodeled, fragile objects.
TWO-FLEXIBLE-FINGERS GRIPPER FORCE
FEEDBACK CONTROL SYSTEM FOR ITS
APPLICATION AS
MANIPULATOR
END
EFFECTOR
ON
A
6-DOF
ABSTRACT
Flexible manipulators have many advantages over rigid
robots when used in grasping tasks, owing to the
characteristic flexibility of the materials used in their
construction, which allow them to absorb energy during
impact and make them controllable in order to limit the
force applied during contact. In this paper, a two-flexiblefinger gripper with a simple sensory feedback system is
proposed.
A
generalized
proportional-integral
controller
is
implemented to acquire high control accuracy, while
eliminating the need for derivatives of system output. The
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performance of this force feedback control system is
investigated when mounted on a 6-degree-of-freedom (6DOF) manipulator and grasping different objects.
The experimental results indicate that the system
proposed is able to manipulate different types of objects
(both rigid and flexible) in an industrial environment by
perfectly controlling the applied contact torque.
UNICURSAL GESTURE INTERFACE FOR
TV REMOTE WITH TOUCH SCREENS
ABSTRACT
We propose a new gesture interface based on unicursal
figures for TV control via touch-screen personal devices.
The interface is a powerful but simple way of accessing
the multiple functions of modern TVs.
Unicursal figures are made without lifting the thumb from
the screen and sequences of commands can be issued
without needing to confirm the thumb's position. Trial use
confirms the feasibility of this interface.
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CONTACTLESS GESTURE RECOGNITION SYSTEM USING
PROXIMITY SENSORS
ABSTRACT
In this paper, we present a novel contactless gesture
recognition system using proximity sensors. A set of
infrared signal feature extraction methods and a decisiontree-based gesture classifier are proposed.
The system allows a user to interact with mobile devices
using intuitive gestures, without touching the screen or
wearing/holding any additional device.
Evaluation results show that the system is low-power, and
able to recognize 3D gestures with over 98% precision in
real time.
TOUCH-SCREEN TERMINAL APPLICATION FOR REMOTE
DATA BASED ON AUTHORIZED ACCESS
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ABSTRACT
Touch-screen all-in-one-machine is the simplest, most
convenient and most natural human-computer interaction
method as a new kind of computer input devices.
For the disadvantages of the current touch screen systems
such as the relatively simple function of the system and
the lack of security features, this paper proposes a
common software interface, which makes use of B/S mode
to realize the browsing of the remote data, provides the
authorized access mechanism based on Web secure
access control, and achieves classification access of the
remote data.
GESTURE CONTROL AND THE NEW AND INTELLIGENT
MAN-MACHINE INTERFACE
ABSTRACT
Summary form only given. Human-computer interfaces
(HCI) have evolved from mouse-keyboard based
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interaction using text and mouse events to multi-touch
screens and other exotic approaches such as using
special gloves or other devices to translate human actions
into application controls.
One of the trends which are “en vogue” in our days is the
control of computer applications and/or computer
controlled devices using human gestures and/or body
movements. There were and still are a series of attempts to
produce computer control scripts via gesture based
interfaces, and research literature is abundant in papers
on this subject.
However, little or few are of value, as the computer based
control via gestures has to be robust and in real-time. Any
lag in the result can lead to users abandoning it. More
recently, 3D IR cameras provide a promised path to
produce depth images. The depth information extracted by
the 3D IR camera is mapped to different grey levels in a
black and white image.
This image is finally interpreted by image processing
suites. 3D IR cameras use near-infrared illumination,
allowing objects that are closer to the camera to appear
brighter than the rest. This means that computer vision
software modules can much more accurately distinguish
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hands and fingers from the rest of a person's body, even in
complete darkness.
In this talk, we will discuss various technologies to be
used to build a 3D IR Camera, review which will be
finalized with a discussion of the 3D IR Camera designed
and implemented by our group. Based on data provided by
the 3D IR Camera a series of related image processing
applications will be discussed.
A demonstration, of a 3D IR camera system will be
presented and applications related to gaming, learning,
and immersion in a 3D virtual reality space will be given at
the end.
COMPUTATIONALLY EFFICIENT NAVIGATION SYSTEM
FOR UNMANNED GROUND VEHICLES
ABSTRACT
This paper proposes to enhance the existing methods of
Self-Supervised Learning (SSL) with application to
autonomous navigation systems through efficient
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computational approaches that
requirements in a practical system.
are
the
principal
First, confidence-based auto labeling for self-supervised
learning is introduced which identifies and eliminates the
input samples with low confidence level that are
susceptible to be mislabeled. Then, a biologically inspired
saliency detection approach for feature biasing is
presented which is able to detect the salient features
through top-down task specific guidance.
The proposed methods are general and can be applied to a
variety of applications. Finally, experimental results on
real datasets from the DARPA-LAGR program are given to
illustrate the effectiveness of the proposed approaches.
CONSTRUCTION OF AN OBSTACLE MAP AND ITS
REALTIME IMPLEMENTATION ON AN UNMANNED
GROUND VEHICLE
ABSTRACT
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This paper presents the development of an obstacle
mapping system based on the concept of a Probabilistic
Threat Exposure Map (PTEM). The paper also discusses
the realtime embedded implementation of this obstacle
mapping system on a small Unmanned Ground Vehicle
(UGV) to support realtime obstacle avoidance.
These activities are a part of a larger effort to establish a
theoretical foundation for autonomous and cooperative
multi-UxV guidance solutions in adversarial environments.
-
AN INTELLIGENT LOW-COST SCANNING RANGE FINDER
ABSTRACT
In this paper, we present an intelligent, low-cost scanning
range finder for collision avoidance on systems with
limited processing power. Our range finder is made low
cost and computationally efficient by taking into
consideration the actual planning needs for local obstacle
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avoidance algorithms to dynamically select the area to
sample range measurements from.
We present a modified version of Trajectory Rollout which
takes into account the limited sensory, and present a
sensory sampling strategy based on the needs of this
trajectory planner.
Finally, we present the construction and deployment of the
sensor on a robot in both telepresence and autonomous
operation.
-
DESIGN OF A POWER-ASSIST WHEELCHAIR
FOR PERSONS WITH HEMIPLEGIA
ABSTRACT
Persons with hemiplegia often require a one arm drive
wheelchair. Current designs exhibit substantially degraded
performance when compared to a standard manual
wheelchair. A power-assist, one arm drive wheelchair was
developed that was maneuverable, foldable and easy to
operate.
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A motor powers the wheel on the user's affected side,
encoders on both rear wheels track wheel positions and a
rotary heel interface mounted on a footrest controls
steering. A control system analyzes wheel and steering
positions and responds to the motion of the hand-driven
wheel.
The prototype met and exceeded predetermined design
specifications based on standard industry test procedures.
The power-assist components could be attached to a wide
range of manual wheelchairs with only minimal
modifications.
-
CONTROL LAYER FOR MULTI-VENDOR INDUSTRIAL
ROBOT INTERACTION PROVIDING INTEGRATION OF
SUPERVISORY
PROCESS
CONTROL
AND
MULTIFUNCTIONAL CONTROL UNITS
ABSTRACT
Based on recent industrial needs for a flexible integration
of supervisory control systems and novel intuitive manual
control units a new control layer is introduced. The control
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layer affords adaptive behaviour in terms of process and
motion planning as well as flexible manual control of
arbitrary robot controllers. It is located between the
industrial robot controller and the control units.
For the purpose of a flexible manufacturer-independent
access to the robot controller we define an object-oriented
programming interface. The set of robot commands is
manufacturer-independent and includes all basic robot
functions regarding motion and program control.
An inherent capability of the control layer is the
transformation of neutral object-oriented robot commands
to manufacturer-specific robot languages. With an
emphasis on the development of a flexible control layer,
we aim for a media-independent communication solution.
In order to cover a broad range of robotic applications,
different
communication
standards
of
industrial
automation are implemented.
Finally, two applications, a smartphone robot control and a
distributed robot control system, are presented and
discussed.
-
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DYNAMIC MODELING AND ENERGY CONSUMPTION
ANALYSIS OF CRAB WALKING OF A SIX-LEGGED ROBOT
ABSTRACT
In this paper, an attempt has been made to develop a
detailed dynamic model of a realistic six-legged robot
during its crab motion. An energy consumption model has
been derived for statically stable wave-crab gaits after
considering a minimum of dissipating energy for optimal
feet forces distributions.
Two approaches, such as minimization of norm of feet
forces and minimization of norm of joint torques have
been developed. The performances of these approaches
have been compared with each other for different values of
duty factor.
The effects of walking parameters, namely velocity, stroke,
duty factor and crab angle are studied on energy
consumption during crab walking. Wave gait with a lower
duty factor is found to be more energy-efficient compared
to that with the higher duty factor at the highest possible
velocity.
-
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INTELLIGENT OBSTACLE AVOIDENCE SYSTEM DESIGN
OF AN UNMANNED GROUND VEHICLE WITH STEREO
VISION
ABSTRACT
The main theme of this paper is to develop a navigation
vehicle system without GPS. With stereo vision, the
geographic information ahead of the vehicle is obtained by
the principle of plane induced parallax. The profiles of left
and right vision are acquired by Canny Edge Detection
algorithm.
Then, an intersection line of the obstacle and the level
ground is found by the way of image processing. Finally,
the position and distance of the obstacle is calculated by
the homography matrix method.
Integrating the above-distributed schemes unmanned
vehicle can avoid collisions with obstacles and arrive at
the target in difference scenario. Experimental results
show that the proposed navigation and control
methodology are practicable.
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WIND ESTIMATION AND AIRSPEED CALIBRATION USING
A UAV WITH A SINGLE-ANTENNA GPS RECEIVER AND
PITOT TUBE
ABSTRACT
This paper proposes a method that uses an aircraft with a
single-antenna GPS receiver and Pitot tube to estimate
wind speed and direction and to calibrate the airspeed.
This sensor combination alone does not determine the true
attitude of the aircraft, so the wind parameters cannot be
obtained directly from the measurements.
However, if the aircraft flies at different headings, such as
in banking turns or circle maneuvers, the wind magnitude
and direction can be estimated from the geometrical
relation between the wind and the measurements. An
extended Kalman filter (EKF) is applied to estimate wind
parameters.
The EKF can also estimate the scaling factor used to
convert dynamic pressure to airspeed. This is useful for
the operation of small unmanned aerial vehicles (UAVs)
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because of difficulty in determining the airspeed scaling
factor of a low-cost UAV.
Simulations are performed for a constant 2-D wind. To test
the effectiveness of the proposed method, flight tests of a
small UAV are conducted. Simulations and flight test
results show that the proposed method is effective.
A TALKING ROBOT AND ITS HUMAN-LIKE EXPRESSIVE
SPEECH PRODUCTION
ABSTRACT
A talking robot which adaptively learns the vocalization
skill by an auditory feedback learning is being developed.
The talking robot is constructed by the mechanical vocal
systems, which respectively correspond to human organs.
In vocalization, the vibration of vocal cords generates a
source sound, and then the sound wave is led to a vocal
tract, which works as a resonance filter to determine the
spectrum envelope.
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The talking robot autonomously learns the vocalization by
applying auditory feedback. In this study, a human-like
expressive speech production by the talking robot is
introduced. A human generates speech by controlling their
own vocal organs for changing the speech expressions
such as the volume and the intonations.
To realize the human-like expressive speech production, a
control method for the mechanical organs has to be
established. In the first part of the paper, the construction
of the talking robot and the acquisition of the vocalization
will be described, and then the control method for
producing human-like speech with various expressions
will be introduced.
-
A PATROLLING SCHEME IN WIRELESS
SENSOR AND ROBOT NETWORKS
ABSTRACT
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In this paper, we design a bio-inspired patrolling algorithm
based on digital pheromone. As events have different
importance, we refer to them as having different priorities.
In our patrolling schemes, robots efficiently handle as
many high priority events as possible. Inspired by the
pheromone-based communication among ants, we
introduce the concept of digital pheromones and propose
a digital pheromone-based patrolling algorithm.
Digital pheromones are introduced to denote the priority of
an event. The main purpose of this algorithm is to lead
robots to handle more events with higher priorities.
Simulations demonstrate the impact of robots' patrol
speed, speed of robots' handling events, etc.
-
DYNAMIC VEHICLE ROUTING FOR ROBOTIC SYSTEMS
ABSTRACT
Recent years have witnessed great advancements in the
science and technology of autonomy, robotics and
networking. This paper surveys recent concepts and
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algorithms for dynamic vehicle routing (DVR), that is, for
the automatic planning of optimal multi-vehicle routes to
perform tasks that are generated over time by an
exogenous process.
We consider a rich variety of scenarios relevant for robotic
applications. We begin by reviewing the basic DVR
problem: demands for service arrive at random locations
at random times and a vehicle travels to provide on-site
service while minimizing the expected wait time of the
demands.
Next, we treat different multi-vehicle scenarios based on
different models for demands (e.g., demands with different
priority levels and impatient demands), vehicles (e.g.,
motion
constraints,
communication
and
sensing
capabilities), and tasks. The performance criterion used in
these scenarios is either the expected wait time of the
demands or the fraction of demands serviced successfully.
In each specific DVR scenario, we adopt a rigorous
technical approach that relies upon methods from
queueing
theory,
combinatorial
optimization
and
stochastic geometry.
First, we establish fundamental limits on the achievable
performance, including limits on stability and quality of
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service. Second, we design algorithms, and provide
provable guarantees on their performance with respect to
the fundamental limits.
-
SITUATION-DRIVEN
CONTROL
OF
WHEELCHAIR TO FOLLOW A CAREGIVER
A
ROBOTIC
ABSTRACT
Recently, several robotic/intelligent wheelchairs that have
autonomous functions to get to some goals or userfriendly interfaces, have been proposed. Although it is
desirable for wheelchair users to go out alone, caregivers
often accompany them.
Therefore it is important to consider reducing caregivers'
load and support their activities. Hence, we have proposed
a robotic wheelchair that can move with a caregiver side
by side by observing his/her behaviors such as body
position and orientation.
This way of motion enables easy communication between
the wheelchair user and the caregiver. However,
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caregivers cannot always move with the wheelchair side
by side. For instance, they may step forward of the
wheelchair to open a door, and they may step aside when
pedestrians are approaching in narrow corridors.
To cope with these situations we propose a new robotic
wheelchair that can move with a caregiver collaboratively
depending on the situation. A laser range sensor is used
for observing the environment around the wheelchair.
When any obstacles are found in its travelling direction,
the wheelchair gives up moving with the caregiver side by
side and follows him/her behind. When the caregiver stops
at a door, the wheelchair waits for him/her to open the
door and follows him/her while avoiding obstacles.
The wheelchair returns to move side by side with the
caregiver when it enters wide space. We propose a motion
control method based on the potential field method, which
enables the wheelchair to take an appropriate position with
respect to the caregiver depending on the situation.
OBSTACLE AVOIDANCE IN
MOBILE ROBOT USING NEURAL NETWORK
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Investigate mobile robot's history, obstacle avoidance is
one of most important research area and also the
foundation of building robot's successful behaviors.
This paper proposes a Neural Network control system that
is able to guide the mobile robots (AmigoBot and P3DX)
traverse through a maze with arbitrary obstacles. The
pattern is trained by using Matlab toolbox and Aria library
for motion control.
There are 256 specific patterns defined to help robot
organize the situation. For input data, sonar and laser
range finder are two main sensors for passing on
information of environment.
The empirical results show the effectiveness and the
validity of the obstacle avoidance behavior of Neural
Network control strategy.
THE REMOTE CONTROL OF MOBILE ROBOT BASED ON
EMBEDDED TECHNOLOGY
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ABSTRACT
Along with the development of society, the remote control
of mobile robot has broad prospect of application. With the
continuous development of embedded system, the system
provides excellent hardware platform for embedded mobile
robot.
With embedded WinCE5.0 operating system, This paper
put forward a kind of remote control method of mobile
robots. The experiments had proved the embedded mobile
robot has low power consumption and strong real-time
control. It also had proved the validity of this method.
DESIGN AND IMPLEMENTATION OF A BALL-SHOOTING
ROBOT WITH IR-BASED EMBEDDED VISION
ABSTRACT
The purpose of this paper is to design and construct an
entertainment robot with sports skills. The robot basic
action involves the robot movement and ball throwing. The
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desired tasks can be achieved through vision and motors
coordination.
Robot itself is equipped with DC and servo motors in order
to drive the wheels and arm, the Wiimote for sensing the IR
target, and Bluetooth modules to communicate with the
central controller.
The demonstration shows robot's autonomous basketball
throwing and target hitting capability with high precision.
SELF-PACED BRAIN-CONTROLLED
WHEELCHAIR METHODOLOGY WITH
SHARED AND AUTOMATED ASSISTIVE CONTROL
The consistency and reliability of the brain computer
interface (BCI) system is often questioned to be safe for
controlling a wheelchair as BCIs characteristically
experience a low signal-to-noise ratio and low
classification accuracy.
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Electroencephalogram (EEG) acquired non-invasively
consists of multiple time-series which are highly
correlated because of volume conduction and ambient
noises, thus providing a rather blurred image of the brain
activity. This low signal-to-noise ratio and low spatial
resolution of the data can degrade the translational
performance of the BCI.
To overcome the low classification accuracy and the
uncertainty in commands of the BCI systems, the user has
to impart additional concentration and time to navigate the
wheelchair to the desired location.
This paper presents a brain-controlled wheelchair (BCW)
control strategy that reduces the total time required to
complete a task and the concentration effort imparted by
the user.
Two BCW approaches are investigated in this work; a
synchronous BCW and a self-paced BCW. These
methodologies involve a shared control methodology
between the BCI/user component and the automated
assistive control (AAC) component.
The proposed BCW strategies are compared to state-ofthe-art BCW control methodologies available in the
literature. The results show that the proposed methods not
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only reduce the concentration time but also provide a safer
and reliable control compared to other BCWs.
-
AUTOMATED VOICE BASED HOME NAVIGATION SYSTEM
FOR THE ELDERLY AND THE PHYSICALLY CHALLENGED
ABSTRACT
In this paper, we propose an Intelligent Home Navigation
System (IHNS) which comprises of a wheelchair, voice
module and navigation module. It can be used by an
elderly or physically challenged person to move inside the
home without any difficulty. It's common that the elders
forget the way to the different rooms in house and the
physically challenged people find it hard to move the
wheel chair without external aid.
By making use of IHNS, elderly and the physically
challenged can go to different rooms in the house like
kitchen, living room, dining room etc by just speaking a
word which is predefined to that particular room.
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The voice of the person is detected by voice capture
module which will be compared by voice recognition
module with predefined voices loaded in to the system.
According to the received voice, the destination is
automatically understood and the wheelchair moves
according to the route which is predefined. It is also
equipped with obstacle avoidance technique, where the
person may not be able to provide proper voices at the
right time.
The wheel chair can automatically navigate from one point
to the other in the home as per predefined route based on
the voice received. Thus the above proposed system can
be used by elderly and physically challenged people in day
to day life even if they are alone at home.
PATH FOLLOWING SYSTEM
AUTONOMOUS
VEHICLE
APPLICATION
OF SMALL UNMANNED
FOR
SURVEILLANCE
ABSTRACT
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A path following flight control is developed to be
implemented in a small UAV system. The path following
control is designed such that the UAV is able to follow
smooth flight-paths within its maneuvering capabilities.
Payload space, weight, and power source constraints
dictate the system to be designed with limited application
of sensors and actuators, while it is still required to be
able to perform its mission within a predefined measures.
The control scheme is intended to be able to steer the UAV
flight close to a predefined path and control its heading
angle accordingly.
The controller principally works by driving the cross-track
and course angle errors of the UAV flight, relative to the
desired path, to zero, through performing Bank to Turn
(BTT) maneuvers. The system generates corrective
commands based on the error information and transforms
it into a heading change via roll maneuver.
The roll maneuver controller is designed using LQR
technique such that it can provide an appropriate roll
dynamics of the UAV. Simulation results will be presented
and analyzed to investigate the performance of the
proposed system.
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HAZARDOUS GAS DETECTING METHOD APPLIED IN
COAL MINE DETECTION ROBOT
ABSTRACT
As one of the largest coal production and consumption
countries in the world, China is also one of the related
accidents occurred frequently countries such as gas
explosion, flood, breaking out of fire during the
exploitation of coal mine.
Coal Mine Detection Robot can be substituted or partial
substituted for emergency workers to enter the mine shaft
disaster site and detect hazardous gas and do some
environmental exploration and surveying task. Coal Mine
Detection Robot uses infra-red spectrum absorption way
to detect methane, carbon monoxide and such gas
simultaneously.
The principle of gas survey meter of infra-red spectrum is
according to the selectively absorption of infrared
radiation by the mash gas, CO to achieve the detection of
their concentration. The advantages of this kind of
hazardous gas detecting are: simultaneously and rapidly
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detecting methane, CO and
selectivity and fast response.
high
sensitivity,
good
Otherwise, it is easy to be taken by robot due to its simple
and light structure, have a lager detection range and probe
is not easy failure to be poisoning and aging.
IMPLEMENTATION OF CAN BUS IN
AN AUTONOMOUS ALL-TERRAIN VEHICLE
ABSTRACT
The main purpose of this effort is to design an
autonomous all terrain vehicle which uses a CAN bus. The
paper describes the operation and advantages of the CAN
protocol in automobiles. The ATV used for this design is a
Honda Four Trax Rancher AT and a brief explanation of the
parts in the ATV is provided.
The Renesas RX62N microcontroller is used as a CAN
controller which creates a single two wire bus through
which electronic control units (ECU) in the automobiles
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communicate. The working of the CAN protocol on the
RX62N has been explained with the help of pseudo code.
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BIOMETRIC ATTENDANCE SYSTEM
ABSTRACT
This research work has application for attendance system
of employer's and students in general. The system will
facilitate institutions/ organization to make attendance
individual in time along with data information thumb
impression will be taken as a signature for the system
entry. Main design and challenge in this system is the
design of database architecture and its business logic.
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AUTOMATED VOICE BASED HOME NAVIGATION SYSTEM
FOR THE ELDERLY AND THE PHYSICALLY CHALLENGED
ABSTRACT
In this paper, we propose an Intelligent Home Navigation
System (IHNS) which comprises of a wheelchair, voice
module and navigation module. It can be used by an
elderly or physically challenged person to move inside the
home without any difficulty.
It's common that the elders forget the way to the different
rooms in house and the physically challenged people find
it hard to move the wheel chair without external aid. By
making use of IHNS, elderly and the physically challenged
can go to different rooms in the house like kitchen, living
room, dining room etc by just speaking a word which is
predefined to that particular room.
The voice of the person is detected by voice capture
module which will be compared by voice recognition
module with predefined voices loaded in to the system.
According to the received voice, the destination is
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automatically understood and the wheelchair
according to the route which is predefined.
moves
It is also equipped with obstacle avoidance technique,
where the person may not be able to provide proper voices
at the right time. The wheel chair can automatically
navigate from one point to the other in the home as per
predefined route based on the voice received. Thus the
above proposed system can be used by elderly and
physically challenged people in day to day life even if they
are alone at home.
---
A TRANSFORMERLESS MEDIUM-VOLTAGE STATCOM
TOPOLOGY
BASED
ON
EXTENDED
MODULAR
MULTILEVEL CONVERTERS
ABSTRACT
A new transformerless four-leg topology is suggested for
shunt compensation, the modular multilevel converters
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(MMC) based on the half-bridge converters, to achieve
higher performance as a STATCOM in a distorted and
unbalanced medium-voltage large-current (MV-LC) system.
Further, an extended MMC (EMMC) is proposed in order to
manage more accurate compensation for high-power
applications. Both proposals can be controlled for various
purposes such as reactive power and unbalance
compensation,
voltage
regulation,
and
harmonic
cancellation. Moreover, related control strategies are also
suggested for both the MMC and the EMMC to ensure that
the source-end three-phase currents are sinusoidal and
balanced. Also, the dc-link capacitors of the half-bridge
converters are regulated.
One interesting application for the EMMC-based STATCOM
could be the improvement in power quality and
performance of the electrified railway traction power
supply system.
Both the MMC- and the EMMC-based STATCOM along with
their proposed control strategies were simulated; further,
to verify the suggestions, these proposals were also
implemented on a 30-kVA modular laboratory prototype.
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Experiments and simulations confirm the predefined
objectives.
AN INTEGRATED-CONTROLLED AC/DC INTERFACE FOR
MICROSCALE WIND POWER GENERATION SYSTEMS
ABSTRACT
In this paper, a novel ac/dc interface with an integrated
controller is proposed for the microscale wind power
generation system (WPGS). The proposed interface is
mainly composed of a dynamic maximum power point
tracking (MPPT) control and a half-controlled single-stage
rectifier with an integrated control.
The half-controlled single-stage rectifier is proposed to
replace the widely used two-stage converter for improving
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the current total harmonics distortion (THD) as well as the
efficiency. The analytic expressions of the duty ratios for
controlling the rectifier are also derived.
Moreover, the dynamic response of the wind turbine and
the extracted wind power are enhanced by the integrated
dynamic MPPT control. Finally, from the experimental
results, it can be seen that the current THD is reduced to
around 5%, and the total efficiency is increased by about
12%-15% depending on the wind speed variations.
AN INTELLIGENT BLIND ROD AND NAVIGATION
PLATFORM BASED ON ZIGBEE TECHNOLOGY
ABSTRACT
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This article introduces an intelligent blind rod and
navigation platform based on ZigBee technology. This
blind rod can detect and analyze the situation on road and
warn the blind to avoid obstacles by ultrasonic
measurement.
The navigation platform based on ZigBee technology can
help the blind know different directions the path leads to.
This intelligent blind rod can better serve for the blind's
independent travel.
A NOTE ON FINGERPRINT RECOGNITION SYSTEMS
ABSTRACT
Among all the techniques developed for personal
authentication, fingerprint recognition system is the most
visible one due to its wide range of successful
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applications in many disciplines such as computer
systems security, secure electronic banking, mobile
phones, credit cards, secure access to buildings, health
and social services, etc. This paper presents a note on
fingerprint recognition systems.
A NEW SINGLE-PHASE SOFT-SWITCHING
FACTOR CORRECTION CONVERTER
POWER
ABSTRACT
In this paper, single-phase soft-switching power factor
correction (PFC) circuit is developed with a new active
snubber cell. This active snubber cell provides zerovoltage transition turn ON and zero-current transition turn
OFF for the main switch without any extra current or
voltage stresses.
Auxiliary switch is turned ON and OFF with zero-current
switching (ZCS) without additional voltage stress.
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Although, there is a current stress on the auxiliary switch,
it is decreased by diverting a part of the current to the
output side with coupling inductance.
The output current and voltage are controlled by the
proposed PFC converter in very wide line and load range.
This PFC converter has simple structure, low cost, and
ease of control as well.
In this study, a detailed steady-state analysis of the new
converter is presented, and this theoretical analysis is
verified exactly by 100 kHz and 300 W prototypes. This
prototype has 98% total efficiency and 0.99 power factor
with sinusoidal current shape.
A REAL MAXIMUM POWER POINT TRACKING
METHOD FOR MISMATCHING COMPENSATION
IN PV ARRAY UNDER PARTIALLY SHADED CONDITIONS
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ABSTRACT
Conventional popular maximum power point tracking
(MPPT) methods are effective under uniform solar
irradiance. However, under solar irradiance mismatching
conditions [partially shaded conditions (PSCs)], these
MPPTs can fail for real MPPT (RMPPT), because multiple
local maxima can be exhibited on the power-voltage
characteristic curve.
Although some researchers have worked on RMPPT under
partial shading conditions, the methods have some
drawbacks in terms of complexity and requirements for
additional circuits, etc. In this paper, a novel MPPT method
capable of RMPPT under PSCs is proposed.
The performance of the proposed MPPT method is
analyzed according to the RMPP position and is verified by
simulation and experimental results.
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A MINIMUM POWER-PROCESSING-STAGE
FUEL-CELL ENERGY SYSTEM BASED
ON A BOOST-INVERTER WITH
A BIDIRECTIONAL BACKUP BATTERY STORAGE
ABSTRACT
When low-voltage unregulated fuel-cell (FC) output is
conditioned to generate ac power, two stages are required:
a boost stage and an inversion one. In this paper, the
boost-inverter topology that achieves both boosting and
inversion functions in a single stage is used to develop an
FC-based energy system that offers high conversion
efficiency, low-cost, and compactness.
The proposed system incorporates additional batterybased energy storage and a dc-dc bidirectional converter
to support instantaneous load changes. The output voltage
of the boost-inverter is voltage-mode controlled and the
dc-dc bidirectional converter is current-mode controlled.
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The load low-frequency current ripple is supplied by the
battery, which minimizes the effects of such ripple being
drawn directly from the FC itself. Analysis, simulation, and
experimental results are presented to confirm the
operational performance of the proposed system.
A HIGH POWER DENSITY SINGLE-PHASE PWM RECTIFIER
WITH ACTIVE RIPPLE ENERGY STORAGE
ABSTRACT
It is well known that single-phase pulse width modulation
rectifiers have second-order harmonic currents and
corresponding ripple voltages on the dc bus. The lowfrequency harmonic current is normally filtered using a
bulk capacitor in the bus, which results in low power
density.
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However, pursuing high power density in converter design
is a very important goal in the aerospace applications. This
paper studies methods for reducing the energy storage
capacitor for single-phase rectifiers.
The minimum ripple energy storage requirement is derived
independently of a specific topology. Based on the
minimum ripple energy requirement, the feasibility of the
active capacitor's reduction schemes is verified.
Then, we propose a bidirectional buck-boost converter as
the ripple energy storage circuit, which can effectively
reduce the energy storage capacitance. The analysis and
design are validated by simulation and experimental
results.
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INTELLIGENT ONLINE MEASUREMENT
AND MANAGEMENT OF ENERGY METER
DATA THROUGH ADVANCED WIRELESS NETWORK
ABSTRACT
Recently the Electrical supply companies are trying to
adopt the electronic measurement of energy consumption
data because of reduced manufacturing cost, improved
measurement accuracy, increased timely information,
miniature size and many other benefits that go well beyond
the traditional rotor-plate energy meter type.
In this paper with the help of an energy chip, an improved
energy metering solution is developed, where automating
the progression of measurement through digital wireless
communication technique is adopted to get the above
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benefits along with smooth control. The developed energy
meter calculates the total average active power mainly for
residential consumers.
The hardware circuit accepts single phase voltage and
currents as its inputs and provides the output in the form
of logic data proportional to the average real power.
This data is fed to a remote computer server through the
wireless ZigBee network that represents the concept of
distant wireless metering, practically involving no
manpower. This paper also presents a software solution
developed for total electrical energy billing and data
management system.
HYBRID WIRELESS COMMUNICATION SYSTEM USING
ZIGBEE AND WIFI TECHNOLOGY IN THE COALMINE
TUNNELS
ABSTRACT
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Wireless Sensor Network (WSN) used under the coalmine
tunnel is an emerging area of research that promises to
provide reliable and flexible communication. This paper
first discussed the best working frequency about the WSN
in coalmine.
Then, according to the actual circumstances of coal mine,
the network structure should adopt cluster-tree topology.
We also develop a multifunction communication wireless
system using ZigBee and WiFi technology, which can
achieve the functions of gas monitoring, wireless
communication, personnel management and video
surveillance, etc.
Practical applications showed that the multifunction
communication system can satisfy the need of dispatch
communication and safety monitor in the coal mine tunnel.
FAULT-TOLERANT TORQUE
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CONTROL OF BLDC MOTORS
ABSTRACT
Fault tolerance is critical for servomotors used in high-risk
applications, such as aerospace, robots, and military.
These motors should be capable of continued functional
operation, even if insulation failure or open-circuit of a
winding occur.
This paper presents a fault-tolerant (FT) torque controller
for brushless dc (BLdc) motors that can maintain accurate
torque production with minimum power dissipation, even if
one of its phases fails. The distinct feature of the FT
controller is that it is applicable to BLdc motors with any
back-electromotive-force waveform.
First, an observer estimates the phase voltages from a
model based on Fourier coefficients of the motor
waveform. The faulty phases are detected from the
covariance of the estimation error. Subsequently, the
phase currents of the remaining phases are optimally
reshaped so that the motor accurately generates torque as
requested while minimizing power loss subject to
maximum current limitation of the current amplifiers.
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Experimental results illustrate the capability of the FT
controller to achieve ripple-free torque performance during
a phase failure at the expenses of increasing the mean and
maximum power loss by 28% and 68% and decreasing the
maximum motor torque by 49%.
FINGERID: A
FINGERPRINT
SYSTEMS
NEW SECURITY
RECOGNITION
MODEL BASED ON
FOR
DISTRIBUTED
ABSTRACT
The current practice of password based security for
distributed systems in general and the Internet in
particular is inadequate. Besides, remembering a plethora
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of long passwords and pass phrases sometimes as many
as 15 or 20 is cumbersome.
This raises the need to introduce a better and more reliable
authentication mechanism which is not dependent on a
series of characters, but rather on a technology that is
unique and only possessed by the individual. Similar
services already exist, and they are good in some
situations, but prove to be inadequate under other
circumstances.
Overall, three main requirements of the everyday Internet
user remain unaddressed – freedom from memorizing
many passwords and pass phrases; convenience and ease
of use; and security.
The present paper attempts to offer an answer to all these
problems by just one solution, named FingerID. The
contribution of this study is of considerable significance,
as it would revolutionize the way Internet security is
managed.
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HIGH-EFFICIENCY REGULATION METHOD FOR A ZEROCURRENT AND ZERO-VOLTAGE CURRENT-FED PUSH–
PULL CONVERTER
ABSTRACT
A new high-efficiency regulation method for a zero-current
and zero-voltage current-fed push-pull converter is
presented. The method proposed is based on the use of a
controlled transformer as a post-regulator, which adds or
subtracts an additional voltage to the output filter of the
converter.
An auxiliary regulator, which only handles a percentage of
the output power, controls this transformer, and therefore,
results in much higher efficiency than a normal
preregulator would have. The novelty of the presented
converter is that regulation is achieved without affecting
the zero-voltage and zero-current switching in any working
conditions.
Small- and large-signal models of the converter have been
developed and a low-power prototype has been simulated
and implemented. The good agreement, between the
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experimental simulations and theoretical results, validates
the theoretical developments.
DYNAMIC MODELING AND ENERGY CONSUMPTION
ANALYSIS OF CRAB WALKING OF A SIX-LEGGED ROBOT
ABSTRACT
The superior terrain adaptability and maneuverability
characteristics of multi-legged robots compared to
wheeled or tracked vehicles for off-road locomotion
motivated the development of six-legged walking robots.
Six-legged robot might be used for locating and disarming
bombs, extinguishing fires, underground mining to recover
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natural resources, explorations of ocean floors and
planets, and others, where a human cannot sustain or
which would be dangerous for him/her. However, with
today’s technologies, the legged systems have the
disadvantages of pay load to weight ratio, and poor energy
efficiency.
An
autonomous
walking
robot
cannot
function
satisfactorily with a poor energy efficiency, due to the fact
that it has to carry all driving and control units in addition
to payload and trunk body. Long duration missions are
also subjected to power supply constraints.
The minimization of energy consumption plays a key role
in the design of an autonomous multi-legged robot.
Various approaches are available in the literature to obtain
energy-efficient gaits of multi-legged robots
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DEVELOPMENT ON GAS LEAK DETECTION AND
LOCATION SYSTEM BASED ON WIRELESS SENSOR
NETWORKS
ABSTRACT
Develops a gas leak detection and location system for the
production safety in Petrochemical Industry. The system is
based on Wireless Sensor Networks (WSN), it can collect
the data of monitoring sites wirelessly and sent to the
computer to update values in the location software.
Consequently, it can give a real-time detective of the
potential risk area, collect the data of a leak accident and
locate the leakage point. However the former systems can
not react in time, even can not obtain data from an
accident and locate accurately.
The paper has three parts, first, gives the overall system
design, and then provides the approaches on both
hardware and software to achieve it.
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BRAIN-ACTUATED HUMANOID ROBOT
NAVIGATION CONTROL USING
ASYNCHRONOUS BRAIN-COMPUTER INTERFACE
ABSTRACT
Brain-actuated robotic systems have been proposed as a
new control interface to translate different human
intentions into appropriate motion commands for robotic
applications. This study proposes a brain-actuated
humanoid robot navigation system that uses an EEG-BCI.
The experimental procedures consisted of offline training
sessions, online feedback test sessions, and real-time
control sessions. During the offline training sessions,
amplitude features from the EEGs were extracted using
band power analysis, and the informative feature
components were selected using the Fisher ratio and the
linear discriminant analysis (LDA) distance metric.
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The Intentional Activity Classifier (IAC) and the Motor
Direction Classifier (MDC) were hierarchically structured
and trained to build an asynchronous BCI system.
During the navigation experiments, the subject controlled
the humanoid robot in an indoor maze using the BCI
system with real-time images from the camera on the
robot's head. The results showed that three subjects
successfully navigated the indoor maze using the
proposed brain-actuated humanoid robot navigation
system.
CONTROLLING HUMAN ATTENTION THROUGH
ROBOT'S GAZE BEHAVIORS
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ABSTRACT
Controlling someone's attention can be defined as shifting
his/her attention from the existing direction to another.
However, it is not easy task for a robot to shift a particular
human's attention if they are not in face-to-face situation.
If the robot would like to communicate a particular person,
it should turn its gaze to that person and make eye contact
to establish mutual gaze. However, only such a turning
action is not enough to set up eye contact when the robot
and the target person are not facing each other.
Therefore, the robot should perform some actions so that
it can attract the target person and meet their gaze. In this
paper, we present a robot that can attract a target person's
attention by moving its head, make eye contact through
showing gaze awareness by blinking its eyes, and
establish joint attention by repeating its head turns from
the person and the target object.
Experiments using twenty human participants confirm the
effectiveness of the robot actions to control human
attention
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DESIGN AND DEVELOPMENT OF
A HAND-GLOVE CONTROLLED WHEEL CHAIR
ABSTRACT
Wheelchairs are a way of reincarnating the purpose of life
in the lives of disabled people. Effective and efficient ways
of delivering a cost-effective and affordable wheelchair to
the common masses, which is not only at par with the
present day technology, but is much easier to use are
presented herewith.
Replacement of the popular joystick stick controlled wheel
chair with a hand-glove control system for easier
maneuvering by bending the fingers, is discussed in this
paper. Intended users control the system by wearing an
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instrumented glove fitted with flex or bend sensors for
controlling the movement and direction of the wheelchair.
Uni-directional wireless communication exists between the
instrumented gloves and the controller which is
sandwiched between the user's seat and the wheels. Initial
design results are also presented in this paper.
The technologies presented in this paper suggest a wide
domain of possibilities to a wide variety of users. In
addition, it also aims at making a cost-effective chair so
that more hi-tech wheelchairs are made use of, widely, by
people with disabilities.
DESIGN AND DEVELOPMENT OF THE WIRELESS SENSOR
NODE FOR TRAFFIC FLOW SURVEILLANCE
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ABSTRACT
Wireless sensor network is expected to be deployed in
intersection to monitor the traffic flow continuously, and
the monitoring data can be used as the foundation of
traffic light control.
In this paper, a traffic information and transmission
system based on Zigbee and wireless sensor network is
built, and the sensor nodes used in traffic flow
surveillance are developed. Structure, hardware and work
flow of WSN nodes are designed.
The stability experiment and the actual environment
experiment are carried out in the last of the paper. The
results of experiments show that WSN has the ability to
collect traffic flow information quickly and transmit the
datum to the processing center in real time.
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DESIGN AND IMPLEMENTATION OF AN INTELLIGENT
VEHICLE DRIVING CONTROLLER
ABSTRACT
The goal of this paper is to implement the control and
design of an intelligent vehicle based on an embedded
DSP platform (eZdsp™ F2812). The overall system
including steering wheel AC serve motor, brake actuator,
throttle driving circuit and the sensors are equipped in a
golf-car as a platform.
Otherwise, digital image processing technology is used to
realize the autonomous driving system which can achieve
multi-mode of lane-keeping, lane-change and obstacleavoidance, the overall system has been examined on
campus roads.
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DESIGN AND IMPLEMENTATION OF PYROELECTRIC
INFRARED SENSOR BASED SECURITY SYSTEM USING
MICROCONTROLLER
ABSTRACT
This paper evaluates the development of a Low-cost
security system using small PIR (Pyroelectric Infrared)
sensor built around a microcontroller. The low-power PIR
detectors take advantage of pyroelectricity to detect a
human body that is a constant source of Passive Infrared
(radiation in the infrared region).
The system senses the signal generated by PIR sensor
detecting the presence of individuals not at thermal
equilibrium with the surrounding environment. Detecting
the presence of any unauthorized person in any specific
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time interval, it triggers an alarm & sets up a call to a
predefined number through a GSM modem.
This highly reactive approach has low computational
requirement, therefore it is well-suited to surveillance,
industrial applications and smart environments. Tests
performed gave promising results.
THE IMPLEMENTATION OF THE INTELLIGENT
TRANSPORT SYSTEM FOR THE REAL-TIME ROADSIDE
ENVIRONMENT INFORMATION TRANSFER
ABSTRACT
The paper proposed a novel system “RTCS (Real-Time
Control System for road environment)” to prevent
accidents of drivers. This paper deployed sensors on
roads and used these sensors to collect information to
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coordinators. How to use sensors to prevent accidents in
vehicular environment is an interesting issue.
Vehicles are equipped with OBU (On-Board Unit) and use
the OBU to query information if the coordinator or RSU
(Road-Side Unit) is located in its communication range.
This system also distributed events into different priority
due to the different damages.
For your example, RSU collects and analyzes the roadside
information for the driver's safety and which provides to
an OBU and a management system according to the
service priority. In the higher rank terminal, the developed
IP-based set-top box application provides information
such as the traffic information, road environmental
information, environmental sensor station error, and etc.
The system has a high potential to improve traffic in two
ways. First, it collects local environmental data and passes
it to a central facility to further process it and pass it to
vehicles. Second, it takes care that urgent local
information is passed directly and thus quickly to local
vehicles which increases traffic safety.
The paper presents architecture to connect a USN
(Ubiquitous Sensor Network) with the ITS (Intelligent
Transport System) consisting of connected OBU and RSU.
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The goal of the system is to provide the ITS with local
environmental data gathered by the USN nodes.
THE INTELLIGENT EMBEDDED CONTROL
WARNING SYSTEM FOR CAR REVERSING
ABSTRACT
Most of the car drivers used the reverse radar or a reverse
camera to detect the road situation behind the vehicle
when it is engaged in reverse gear. As a matter of fact, the
pedestrians can virtually know if the vehicle is backing up
or not only by seeing the permanent bright reverse lamps.
And as there is not much change with the reverse lamp to
be seen, therefore their warning function for pedestrians
seems to be still insufficient eventually.
Therefore, this research tries to design a set of embedded
intelligent car backup warning system so as to promote
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the safety of the walkers or the other drivers on the road.
This embedded system uses Microsoft Win CE operating
system and matches with the Mini2440 developing board. It
also uses the Visual Studio 2005 for developing the
intelligent touch panel operating mode.
The UART interface on the Mini 2440 developing board
controls the frequency converter, RC server and LED by
using PIC16F877 to transform the signal of the sensors.
And then, connecting to the sensors of angle, luminosity
and distance so as to read the voltage value of the sensor
and transferring them into actual values and followed by
using 27 fuzzy logic rules to carry on the fuzzy logic
deduction.
And the angle of the LED reverse lamp bracket is adjusted
and driven automatically according to the results of this
logic deduction eventually. This research tries to do the
simulated test by using a mobile frame in the same height
as a real automobile. To let the test mobile frame being
located 240 cm away from the obstacle and then start the
driven motor and set the frequency of it to be with 60 Hz.
(in other words, its speed is approximately in 2.52 Km/h.)
the let the test mobile frame to stop at 40 cm in front of the
obstacle.
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We found out that the warning lamp bracket installation
angle will be changed correspondently with the distance
between test mobile frame and obstacle and being
declined automatically from 90 degree to 0 degree.
Apparently, from th- - e test results, it has been proven
that this system can reach the goal of automatically
controlled car back-up warning function truly.
THE RESEARCH ON ZIGBEE-BASED
MINE SAFETY MONITORING SYSTEM
ABSTRACT
In this paper the research method of Mine Safety
Monitoring System based on ZigBee is elaborated, and the
hardware design of ZigBee sensor node and system
software design are discussed. The self-organizing routing
algorithm for ZigBee networks and the gateway design and
systems integration are also studied.
ZigBee-based Mine Safety Monitoring System can achieve
a variety of safety factors of production, and underground
environment (such as gas, temperature, humidity and
other environmental indicators) for monitoring, controlling
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mine production, safety management to provide a good
basis for decision making.
--
THE TEMPERATURE HUMIDITY MONITORING SYSTEM OF
SOIL BASED ON WIRELESS SENSOR NETWORKS
ABSTRACT
This design uses a wireless sensor network as information
acquisition and processing platform. The coverage is big,
effectively
resolves
the
disadvantages
of
wired
communications.
Adopting the technology of wireless sensor network based
on Zigbee, GPRS and Web Services technology, we design
a set of low cost, low power consumption, flexible
automatic networking temperature humidity monitoring
system of soil.
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And the system is a complete set of wireless sensor
network induction, acquisition, storage, application,
reporting, solution, has a good man-computer exchange
interface.
Through commissioning in the demonstration base of
soybean in Northeast Agricultural University, it shows that
the system can meet the requirements of the temperature
and humidity of soil environmental monitoring and unified
management.
-
THREE-PHASE TO SINGLE-PHASE POWER-CONVERSION
SYSTEM
ABSTRACT
A power-conversion system for converting three-phase
power into single-phase power is proposed in this paper.
The proposed three-phase to single-phase (3?/1?) power-
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conversion system comprises a power converter, a zerosequence transformer set, and a filter capacitor.
The output currents of the power converter are divided
into two parts. One is a set of positive-sequence
sinusoidal currents, whose phases are in phase with the
voltages of the three-phase power source. The positivesequence sinusoidal currents are employed to absorb a
real power from the three-phase power source.
In addition, the power converter can perform the functions
of three-phase balance, low harmonic distortion, and unity
power factor when the single-phase load is used. The
other is a set of zero-sequence currents, which will pass
through the zero-sequence transformer set and build a
single-phase voltage with high power quality for the
single-phase load.
Since the proposed 3?/1? power-conversion system
contains only one power converter, it has the advantages
of simplifying both the power circuit and control circuit. A
prototype is developed and tested to demonstrate the
performance of the proposed 3?/1? power-conversion
system.
The experimental results show that the proposed system
can achieve the expected performance.
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-
THE DESIGN OF THE SCENE OF THE ACCIDENT ALARM
SYSTEM BASED ON ARM AND GPS
ABSTRACT
This system designs the scene of the accident alarm
system based on ARM and GPS. When the accident
occurred , the manual and automatic alarm can be realized.
Vehicles state and user information as well as alarm
locations will be transmitted to the Pre-set of treatment
centre; after receiving related alarming information, the
treatment centre will display this information on its map.
After receiving alarm information, the treatment Centre
staffs who are on duty will notice the handler who is the
nearest to the scene of the accident in time, in order to
reach the scene of accident in the first time, and gain more
treatment time for the accident injured, and lower the
accident mortality, as well as reduce incidents impacting
time on the traffic.
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-
THE FLEXIBLE BUS SYSTEMS USING ZIGBEE AS A
COMMUNICATION MEDIUM
ABSTRACT
This paper describes a research on The Flexible Bus
Systems (FBS) using Zigbee as a communication medium.
The Flexible Bus System is a demand responsive transit
(DRT) but it is more efficient and convenient in a sense
that it entertains passenger's demands and gives bus
locations in real time.
The real time synchronization of The Flexible Bus System
makes it information rich and unique as compared to other
DRTs. The Flexible Bus Systems is a system that can
replace the Traditional Bus Systems with its flexibility and
efficiency.
This paper discusses the use of wireless technologies in
The Flexible Bus Systems and how to make it more reliable
using short range wireless technology Zigbee.
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-
INTERLEAVED SOFT-SWITCHING BOOST CONVERTER
FOR PHOTOVOLTAIC POWER-GENERATION SYSTEM
ABSTRACT
In this paper, a interleaved soft switching boost converter
(ISSBC) for a photovoltaic (PV) power-generation system
is proposed.
The topology used raises the efficiency for the dc/dc
converter of the PV power conditioning system (PVPCS),
and it minimizes switching losses by adopting a resonant
soft-switching method. A detailed mode analysis of the
proposed topology is presented.
The feasibility of the proposed topology is experimentally
verified for a 1.2-kW prototype. The experimental results
imply that 97.28% efficiency is achieved under the full-load
condition. Consequently, it is confirmed that the overall
efficiency is increased by about 1.5% compared with the
conventional hard switching interleaved boost converter.
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-
MPPT BASED STAND-ALONE WATER PUMPING SYSTEM
ABSTRACT
Renewable energy sources are becoming a viable
substitute for conventional energy sources due to
increases in world's energy demand and scarce resources.
Solar pump operated with AC drive offer better choice in
terms of size, ruggedness, efficiency and maintainability.
In this work, dc power from solar panel is boosted and fed
to an inverter which gives ac output. Inverter drives the
motor coupled to the water pump.
To get the maximum power available at any instant an
MPPT controller is used to control the converter. Of
different types of MPPT algorithms artificial intelligence
(AI) techniques are popular. Artificial neural networks
(ANNs) & fuzzy logic (FL) two different types of AI
techniques that are used to design the MPPT controller for
PV system.
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In this proposed work, depending on solar radiation and
temperature, the MPPT controller gives optimized duty
cycle. Neural network and fuzzy logic are two MPPT
controllers, simulated to give optimum duty cycle. These
MPPT controllers are compared based on the power
obtained from the boost converter. Simulation results are
also presented.
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MULTIPHASE DC–DC CONVERTERS USING A BOOSTHALF-BRIDGE CELL FOR HIGH-VOLTAGE AND HIGHPOWER APPLICATIONS
ABSTRACT
In this paper, multiphase dc-dc converters are proposed
for high-voltage and high-power applications. A
generalized converter is configured such that the boosthalf-bridge (BHB) cells and voltage doublers are
connected in parallel or in series to increase the output
voltage and/or the output power.
In addition to reduced device voltage and current ratings
by the connection, the proposed converter has the
following features: high-step-up voltage gain with
significantly reduced transformer turn ratio, low-input
current ripple due to interleaving effect, zero-voltage
switching turn-ON of switches and zero-current switching
turn-OFF of diodes, no additional clamping and start-up
circuits required, high-component availability and easy
thermal distribution due to the use of multiple small
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components, and flexibility in device selection resulting in
optimized design.
A design guideline of determining the optimum circuit
configuration for given output voltage and power level is
presented. Experimental results are also provided to
validate the proposed concept.
-
ONLINE VOTING SYSTEM POWERED BY BIOMETRIC
SECURITY USING STEGANOGRAPHY
ABSTRACT
Using Cryptography and Steganography at the same time,
we try to provide Biometric as well as Password security
to voter accounts. The scheme uses images as cover
objects for Steganography and as keys for Cryptography.
The key image is a Biometric measure, such as a
fingerprint image.
Proper use of Cryptography greatly reduces the risks in
these systems as the hackers have to find both secret key
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and the template. The basic idea is to merge the secret key
with the cover image on the basis of key image.
The result of this process produces a stego image which
looks quite similar to the cover image but not detectable
by human eye. The system targets the authentication
requirement of a voting system.
-
PERFORMANCE OF A HIGH-EFFICIENCY SWITCHEDCAPACITOR-BASED RESONANT CONVERTER WITH
PHASE-SHIFT CONTROL
ABSTRACT
This paper presents operating performance of a switchedcapacitor-based resonant converter (SCRC) using a phaseshift control method. The proposed phase-shift control
realizes zero-voltage switching operation, and thus
achieves a high-conversion efficiency.
A theoretical analysis shows that the SCRC can reduce its
inductor volume compared with a conventional buck
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converter when the output voltage range is within 19%81% of its input voltage.
Experimental results verify the operating characteristics of
the proposed method and show the improved conversion
efficiency of more than 99%.
-
PROTECTION AND CONTROL OF LOW VOLTAGE MOTORS
USED IN INDUSTRIAL APPLICATIONS
ABSTRACT
As low voltage motors are critical assets in today's
industrial applications this paper will review the
applications of microprocessor-based protection and
control on low voltage motors less than 600 V AC in
industrial facilities.
It will review principles of low voltage motor protection
(thermal overload, ground fault, unbalance, etc.). In
addition, the paper will discuss the starting control of low
voltage motors and review the different starting types (Full
Voltage Non-Reversing, Full Voltage Reversing, Two
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Speed, Wye-Delta, Inverter, Soft Starter). Communications
play a key role in the starting and stopping of low voltage
motors.
This
paper will
also
discuss
several
different
starting/stopping controls using communication protocols,
such as Profibus, DeviceNet and Modbus.
-
REAL TIME PADDY CROP FIELD
MONITORING USING ZIGBEE NETWORK
ABSTRACT
Sensors are the essential device for precision agricultural
applications. In this paper we have detailed about how to
utilize the sensors in paddy crop field area and explained
about Wireless Sensor Network (WSN), Zigbee network,
Protocol stack, zigbee Applications and the results are
given,
when
implemented
the
zigbee
network
experimentally in real time environment.
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This paper proposed idea about monitoring the crop field
area without human interaction. The fundamental concept
of this paper is to provide a highly enabled monitoring of
crop field. This paper is focus on the sensing and
monitoring of the crop field and gives various sensing
analyzes in the paddy crop field.
-
REMOTE
MONITORING
AND
CONTROL
OF
PHOTOVOLTAIC SYSTEM USING WIRELESS SENSOR
NETWORK
ABSTRACT
Efficient energy yield is a major concern in photovoltaic
systems in solar energy supply. Smart photovoltaic
modules offer a potential solution to allow solar
generators to maximize their productivity.
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This paper describes details of the design and
instrumentation of smart photovoltaic modules, a wireless
sensor network, and software for real-time sensing and
control of a photovoltaic system with maximum power
point tracking at module level.
Field condition is monitored by voltage, current,
irradiance, and temperature sensors distributed across the
photovoltaic field. The sensory data are periodically
sampled and transmitted to a base station. The power
point is controlled by a integrated DC-DC converter.
The output voltage in the converter is regulated by a
digital controller. The reference voltage is calculated
based on a neural network model, which is used to identify
maximum power point.
The communication data for remote monitoring and
distributed control are successfully transmitted using a
low-cost ZigBee wireless network. The web-based software
developed in this paper offers stable remote access to
field conditions and real-time control of the power points
in the smart photovoltaic system.
-
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RFID AND ZIGBEE BASED
MANUFACTURING MONITORING SYSTEM
ABSTRACT
Traditional methods of monitoring production in
enterprises by humans on site are unable to meet the
expectations for efficiency, accuracy and cost as product
lifecycles are shortened continuously.
Setting up
monitoring
monitoring
efficiency in
an RFID and ZigBee based manufacturing
system is a good approach to improve
efficiency so as to improve management
enterprises.
Although there are still some problems to be solved for
RFID and ZigBee technologies, their unique features still
make the monitoring system based on them a promising
system in manufacturing enterprises. The architecture of
the RFID and ZigBee based monitoring system is
presented in this paper.
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-
SINGLE-PHASE
BACK-TO-BACK
CONVERTER
FOR
ACTIVE
POWER
BALANCING,
REACTIVE
POWER
COMPENSATION,
AND
HARMONIC
FILTERING
IN
TRACTION POWER SYSTEM
ABSTRACT
An active power compensator (APC) based on singlephase back-to-back power converter is proposed in this
paper to solve problems of power quality of electric
railway power supply system. This system adopts a singlephase feeding connection, which is called cophase power
supply scheme.
In this scheme, APC connects the balance transformer
between feeding phase for power supply and another
phase for compensation. It has some characteristics, such
as active power balancing, reactive power compensating,
and harmonics filtering. In order to achieve these
characteristics, the control scheme requires seven
combination models. In this paper, a multifunctional
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control algorithm is proposed to realize every conceivable
model.
A cophase system with APC based on field programmable
gate array (FPGA) and YNvd balance transformer is also
designed and evaluated. The experimental results obtained
from this prototype illustrate that the compensating ability
is extremely high in steady-state and dynamic responses,
and the power quality of a substation with distorted loads
can be improved integrally.
-
THE DESIGN OF THE SCENE OF
THE ACCIDENT ALARM SYSTEM BASED ON ARM AND
GPS
ABSTRACT
This system designs the scene of the accident alarm
system based on ARM and GPS. When the accident
occurred , the manual and automatic alarm can be realized.
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Vehicles state and user information as well as alarm
locations will be transmitted to the Pre-set of treatment
centre; after receiving related alarming information, the
treatment centre will display this information on its map.
After receiving alarm information, the treatment Centre
staffs who are on duty will notice the handler who is the
nearest to the scene of the accident in time, in order to
reach the scene of accident in the first time, and gain more
treatment time for the accident injured, and lower the
accident mortality, as well as reduce incidents impacting
time on the traffic.
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HIGH-EFFICIENCY REGULATION METHOD FOR
A ZERO-CURRENT AND ZERO-VOLTAGE
CURRENT-FED PUSH–PULL CONVERTER
ABSTRACT
A new high-efficiency regulation method for a zero-current
and zero-voltage current-fed push-pull converter is
presented. The method proposed is based on the use of a
controlled transformer as a post-regulator, which adds or
subtracts an additional voltage to the output filter of the
converter.
An auxiliary regulator, which only handles a percentage of
the output power, controls this transformer, and therefore,
results in much higher efficiency than a normal
preregulator would have. The novelty of the presented
converter is that regulation is achieved without affecting
the zero-voltage and zero-current switching in any working
conditions.
Small- and large-signal models of the converter have been
developed and a low-power prototype has been simulated
and implemented. The good agreement, between the
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experimental simulations and theoretical results, validates
the theoretical developments.
-
FAULT-TOLERANT TORQUE CONTROL OF BLDC MOTORS
ABSTRACT
Fault tolerance is critical for servomotors used in high-risk
applications, such as aerospace, robots, and military.
These motors should be capable of continued functional
operation, even if insulation failure or open-circuit of a
winding occur.
This paper presents a fault-tolerant (FT) torque controller
for brushless dc (BLdc) motors that can maintain accurate
torque production with minimum power dissipation, even if
one of its phases fails. The distinct feature of the FT
controller is that it is applicable to BLdc motors with any
back-electromotive-force waveform.
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First, an observer estimates the phase voltages from a
model based on Fourier coefficients of the motor
waveform.
The faulty phases are detected from the covariance of the
estimation error. Subsequently, the phase currents of the
remaining phases are optimally reshaped so that the motor
accurately generates torque as requested while minimizing
power loss subject to maximum current limitation of the
current amplifiers.
Experimental results illustrate the capability of the FT
controller to achieve ripple-free torque performance during
a phase failure at the expenses of increasing the mean and
maximum power loss by 28% and 68% and decreasing the
maximum motor torque by 49%.
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DYNAMIC MODELING AND ENERGY CONSUMPTION
ANALYSIS OF CRAB WALKING OF A SIX-LEGGED ROBOT
ABSTRACT
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In this paper, an attempt has been made to develop a
detailed dynamic model of a realistic six-legged robot
during its crab motion. An energy consumption model has
been derived for statically stable wave-crab gaits after
considering a minimum of dissipating energy for optimal
feet forces distributions.
Two approaches, such as minimization of norm of feet
forces and minimization of norm of joint torques have
been developed. The performances of these approaches
have been compared with each other for different values of
duty factor.
The effects of walking parameters, namely velocity, stroke,
duty factor and crab angle are studied on energy
consumption during crab walking. Wave gait with a lower
duty factor is found to be more energy-efficient compared
to that with the higher duty factor at the highest possible
velocity.
-
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DEVELOPMENT ON GAS LEAK DETECTION AND
LOCATION SYSTEM BASED ON WIRELESS SENSOR
NETWORKS
ABSTRACT
Develops a gas leak detection and location system for the
production safety in Petrochemical Industry. The system is
based on Wireless Sensor Networks (WSN), it can collect
the data of monitoring sites wirelessly and sent to the
computer to update values in the location software.
Consequently, it can give a real-time detective of the
potential risk area, collect the data of a leak accident and
locate the leakage point. However the former systems can
not react in time, even can not obtain data from an
accident and locate accurately.
The paper has three parts, first, gives the overall system
design, and then provides the approaches on both
hardware and software to achieve it.
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VOICE OVER ZIGBEE NETWORKS
WITH ENVIRONMENTAL MONITORING
ABSTRACT
ZigBee technology is being embedded in a range of
applications up to smart energy, healthcare, and
telecommunication services. In this paper, we present a
voice transmission system, one of telecommunication
value-added services, based on the low-rate ZigBee
networks.
We design a model to perform a sensor role as a member
of ZigBee networks in addition to providing the costeffective voice transmission function.
-
VOICE RECOGNITION BASED
WIRELESS HOME AUTOMATION SYSTEM
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ABSTRACT
Home Automation industry is growing rapidly; this is
fuelled by the need to provide supporting systems for the
elderly and the disabled, especially those who live alone.
Coupled with this, the world population is confirmed to be
getting older.
Home automation systems must comply with the
household standards and convenience of usage. This
paper details the overall design of a wireless home
automation system (WHAS) which has been built and
implemented.
The automation centres on recognition of voice commands
and uses low-power RF ZigBee wireless communication
modules which are relatively cheap. The home automation
system is intended to control all lights and electrical
appliances in a home or office using voice commands. The
system has been tested and verified.
The verification tests included voice recognition response
test, indoor ZigBee communication test, and the
compression and decompression tests of DPCM
(Differential Pulse Code Modulation) speech signals. The
tests involved a mix of 35 male and female subjects with
different English accents. 35 different voice commands
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were sent by each person. Thus the test involved sending
a total of 1225 commands and 79.8% of these commands
were recognised correctly.
-
A GSM, INTERNET AND SPEECH CONTROLLED
WIRELESS INTERACTIVE HOME AUTOMATION SYSTEM
ABSTRACT
The home automation today needs to make use of the
latest technological components available. In this paper,
we present the design and implementation of a home
automation system where communication technologies
GSM (Global System for Mobile Communication), Internet,
and speech recognition have been used.
All these techniques are successfully merged in a single
wireless home automation system. This system offers a
complete, low cost, powerful and user friendly way of realtime monitoring and remote control of a house
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VOLTAGE-SOURCE PWM RECTIFIER–INVERTER BASED
ON DIRECT POWER CONTROL AND
ITS OPERATION CHARACTERISTICS
ABSTRACT
This paper describes a novel control strategy of direct
power-control-based
voltage-source
pulsewidth
modulation (PWM) rectifier-inverter. The key of this
strategy is direct selection of a switching state of the PWM
rectifier-inverter on basis of instantaneous power errors.
A relationship between the instantaneous power and the
switching state of the PWM rectifier-inverter is
theoretically analyzed, which is essential to compose a
switching-state table. Effectiveness of the proposed
technique is examined through several experimental tests,
using a 1.6-kW prototype.
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As a result, unity power factor operation is achieved by the
proposed method, and the output currents are confirmed
to be sinusoidal waveforms without large distortion under
balanced and unbalanced power-source condition.
-
ZIGBEE ELECTRIC VEHICLE CHARGING SYSTEM
ABSTRACT
This paper presents a Information system for ZigBee
Energy Dispenser (ZED), with onsite Charging Hotspot
subsystem (Z-key, Z-Charger and Data Hub) and backend
Web
portals
subsystem
(i-Plug),
over
wireless
transmission by using ZigBee module and wired
transmission on internet network.
ZED is an AMI solution dedicated to electrical
charging for both private and public car parks.
platform which aimed to coordinate the data flow
customer, Utility information system (e.g MDMS,
and Charging Hotspot.
vehicle
It is a
among
billing)
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ZIGBEE/GPS TRACKING SYSTEM FOR ROWING RACES
ABSTRACT
In this paper a ZigBee/GPS Tracking System for Rowing
Races is presented. The system provides real-time
monitoring of boat position. Potential applications
includes, race monitoring, aided-training and safety
systems.
The system is composed of two main types of modules,
Mobile Units equipped with a GPS receiver (in the boat),
and a fixed one composed by the Central Unit and the
Race Manager, located in the operations room.
The communication between the Central and the Mobile
units is provided by a point to multipoint ZigBee wireless
network. At the current development stage a system
prototype was developed and used for testing purposes.
Preliminary tests, in order to make a first assessment of
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system functionalities, were performed in a simulated land
environment and the obtained results were promising.
-
HYBRID WIRELESS COMMUNICATION SYSTEM USING
ZIGBEE AND WIFI TECHNOLOGY IN THE COALMINE
TUNNELS
ABSTRACT
Wireless Sensor Network (WSN) used under the coalmine
tunnel is an emerging area of research that promises to
provide reliable and flexible communication. This paper
first discussed the best working frequency about the WSN
in coalmine.
Then, according to the actual circumstances of coal mine,
the network structure should adopt cluster-tree topology.
We also develop a multifunction communication wireless
system using ZigBee and WiFi technology, which can
achieve the functions of gas monitoring, wireless
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surveillance, etc.
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management
and
video
Practical applications showed that the multifunction
communication system can satisfy the need of dispatch
communication and safety monitor in the coal mine tunnel.
SENSORLESS VECTOR CONTROL OF INDUCTION
MOTORS AT VERY LOW SPEED USING A NONLINEAR
INVERTER MODEL AND PARAMETER IDENTIFICATION
ABSTRACT
The performance of vector-controlled induction motor
drives without a speed sensor is generally poor at very low
speed. The reasons are offset and drift components in the
acquired feedback signals, voltage distortions caused by
the nonlinear behavior of the switching converter, and the
increased sensitivity against model parameter mismatch.
New modeling and identification techniques are proposed
to overcome these problems. A pure integrator is
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employed for stator flux estimation which permits highestimation bandwidth. Compensation of the drift
components is done by offset identification.
The nonlinear voltage distortions are corrected by a selfadjusting inverter model. A further improvement is a novel
method for online adaptation of the stator resistance.
Experiments demonstrate smooth steady-state operation
and high dynamic performance at extremely low speed.
-
INTELLIGENT ONLINE MEASUREMENT AND
MANAGEMENT OF ENERGY METER DATA
THROUGH ADVANCED WIRELESS NETWORK
ABSTRACT
Recently the Electrical supply companies are trying to
adopt the electronic measurement of energy consumption
data because of reduced manufacturing cost, improved
measurement accuracy, increased timely information,
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miniature size and many other benefits that go well beyond
the traditional rotor-plate energy meter type.
In this paper with the help of an energy chip, an improved
energy metering solution is developed, where automating
the progression of measurement through digital wireless
communication technique is adopted to get the above
benefits along with smooth control.
The developed energy meter calculates the total average
active power mainly for residential consumers. The
hardware circuit accepts single phase voltage and
currents as its inputs and provides the output in the form
of logic data proportional to the average real power.
This data is fed to a remote computer server through the
wireless ZigBee network that represents the concept of
distant wireless metering, practically involving no
manpower. This paper also presents a software solution
developed for total electrical energy billing and data
management system.
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BI-DIRECTIONAL DCM DC TO DC CONVERTER FOR
HYBRID ELECTRIC VEHICLES
ABSTRACT
This paper presents a bi-directional DC to DC converter
with a unique concept in control. The converter was
designed for hybrid electric vehicles, so size becomes a
pressing design parameter. For that reason a buck
converter in DCM was used to realize the DC to DC
converter.
The DCM operation was used in order to shrink the
magnetic components, as described in the paper.
However, DCM converters are not inherently bi-directional.
The unique controller developed here allows for the DCM
converter to seamlessly direct power from low voltage side
to high voltage side and from high voltage side back to low
voltage side.
A power management technique was also developed to
handle a wide array of conditions present in hybrid electric
vehicle applications. The technology developed here offers
the designer the option to utilize the benefits of a buck
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converter in DCM while still maintaining a bi-directional
power flow.
-
THE TEMPERATURE HUMIDITY MONITORING SYSTEM OF
SOIL BASED ON WIRELESS SENSOR NETWORKS
ABSTRACT
This design uses a wireless sensor network as information
acquisition and processing platform. The coverage is big,
effectively
resolves
the
disadvantages
of
wired
communications.
Adopting the technology of wireless sensor network based
on Zigbee, GPRS and Web Services technology, we design
a set of low cost, low power consumption, flexible
automatic networking temperature humidity monitoring
system of soil.
And the system is a complete set of wireless sensor
network induction, acquisition, storage, application,
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reporting, solution, has a good man-computer exchange
interface.
Through commissioning in the demonstration base of
soybean in Northeast Agricultural University, it shows that
the system can meet the requirements of the temperature
and humidity of soil environmental monitoring and unified
management.
A NEW ADAPTIVE WEIGHT ALGORITHM FOR SALT AND
PEPPER NOISE REMOVAL
ABSTRACT
A new adaptive weight algorithm is developed for the
removal of salt and pepper noise. It consists of two major
steps, first to detect noise pixels according to the
correlations between image pixels, then use different
methods based on the various noise levels.
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For the low noise level, neighborhood signal pixels mean
method is adopted to remove the noise, and for the high
noise level, an adaptive weight algorithm is used.
Experiments show the proposed algorithm has advantages
over regularizing methods in terms of both edge
preservation and noise removal, even for heavily
contaminated image with noise level as high as 90%, it still
can get a significant performance.
REMOVAL OF HIGH DENSITY SALT AND PEPPER NOISE
THROUGH MODIFIED DECISION BASED UNSYMMETRIC
TRIMMED MEDIAN FILTER
ABSTRACT
A modified decision based unsymmetrical trimmed median
filter algorithm for the restoration of gray scale, and color
images that are highly corrupted by salt and pepper noise
is proposed in this paper.
The proposed algorithm replaces the noisy pixel by
trimmed median value when other pixel values, 0's and
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255's are present in the selected window and when all the
pixel values are 0's and 255's then the noise pixel is
replaced by mean value of all the elements present in the
selected window.
This proposed algorithm shows better results than the
Standard Median Filter (MF), Decision Based Algorithm
(DBA), Modified Decision Based Algorithm (MDBA), and
Progressive Switched Median Filter (PSMF).
The proposed algorithm is tested against different
grayscale and color images and it gives better Peak
Signal-to-Noise Ratio (PSNR) and Image Enhancement
Factor (IEF).
OPERATION IMPROVEMENT OF INDOOR ROBOT BY
GESTURE RECOGNITION
ABSTRACT
Recently, the demand for the indoor robots has increased.
Therefore, increased opportunities for many people to
operate the robots have emerged. However, for many
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people, it is often difficult to operate a robot using the
conventional methods like remote control.
To solve this problem, we propose a robot operation
system using the hand gesture recognition. Our method
pays attention to the direction and movement of the hand.
We were able to recognize several gestures in real-time.
ISOLATED WIND–HYDRO HYBRID SYSTEM USING CAGE
GENERATORS AND BATTERY STORAGE
ABSTRACT
This paper deals with a new isolated wind-hydro hybrid
generation system employing one squirrel-cage induction
generator (SCIG) driven by a variable-speed wind turbine
and another SCIG driven by a constant-power hydro
turbine feeding three-phase four-wire local loads.
The proposed system utilizes two back-to-back-connected
pulsewidth modulationcontrolled insulated-gate-bipolartransistor-based voltage-source converters (VSCs) with a
battery energy storage system at their dc link.
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The main objectives of the control algorithm for the VSCs
are to achieve maximum power tracking (MPT) through
rotor speed control of a wind-turbine-driven SCIG under
varying wind speeds and control of the magnitude and the
frequency of the load voltage.
The proposed wind-hydro hybrid system has a capability
of bidirectional active- and reactive-power flow, by which it
controls the magnitude and the frequency of the load
voltage.
The proposed electromechanical system using SCIGs, an
MPT controller, and a voltage and frequency controller are
modeled and simulated in MATLAB using Simulink and
Sim Power System set toolboxes, and different aspects of
the proposed system are studied for various types of
linear, nonlinear, and dynamic loads, and under varying
wind-speed conditions.
The performance of the proposed system is presented to
demonstrate its capability of MPT, voltage and frequency
control (VFC), harmonic elimination, and load balancing.
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TECHNO-ECONOMIC
ANALYSIS
OF
SVC-HVDC
TRANSMISSION SYSTEM FOR OFFSHORE WIND
ABSTRACT
One of the trends concerning offshore wind farms is to
increase the distance from the wind farm to the shore, and
has to be transported over very long distances to make a
connection with the main supply grid. But placing wind
farms offshore rises a lot o challenges related to
construction, installation and nevertheless with the energy
transmission.
VSC HVDC is a rather new technology with promising
characteristics for offshore wind transmission. And the
techno-economic value analysis for VSC HVDC is
necessary as all projects require a maximal effort in order
to make the offshore wind farm viable. The possible
structures for offshore wind farm and some feasible
turbine topologies for offshore wind were introduced in the
paper.
Based on the grid code requirements, a techno-economic
analysis for VSC HVDC with SCIG was proposed. This
HVDC system is compared to the main variable-speed
topologies (DFIG and DDPMSG) in combination with HVAC
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and a typical wind farm is put upfront to investigate.
Result show that the SVC HVDC transmission system with
SCIC could get a cost-efficient.
GRID INTERCONNECTION OF RENEWABLE ENERGY
SOURCES AT THE DISTRIBUTION LEVEL WITH POWERQUALITY IMPROVEMENT FEATURES
ABSTRACT
Renewable energy resources (RES) are being increasingly
connected in distribution systems utilizing power
electronic converters. This paper presents a novel control
strategy for achieving maximum benefits from these gridinterfacing inverters when installed in 3-phase 4-wire
distribution systems.
The inverter is controlled to perform as a multi-function
device by incorporating active power filter functionality.
The inverter can thus be utilized as: 1) power converter to
inject power generated from RES to the grid, and 2) shunt
APF to compensate current unbalance, load current
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harmonics, load reactive power demand and load neutral
current.
All of these functions may be accomplished either
individually or simultaneously. With such a control, the
combination of grid-interfacing inverter and the 3-phase 4wire linear/non-linear unbalanced load at point of common
coupling appears as balanced linear load to the grid.
This new control concept is demonstrated with extensive
MATLAB/Simulink simulation studies and validated
through digital signal processor-based laboratory
experimental results.
A NEW APPROACH TO MULTIFUNCTIONAL DYNAMIC
VOLTAGE
RESTORER
IMPLEMENTATION
FOR
EMERGENCY CONTROL IN DISTRIBUTION SYSTEMS
ABSTRACT
The dynamic voltage restorer (DVR) is one of the modern
devices used in distribution systems to protect consumers
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against sudden changes in voltage amplitude. In this
paper, emergency control in distribution systems is
discussed by using the proposed multifunctional DVR
control strategy.
Also, the multiloop controller using the Posicast and
P+Resonant controllers is proposed in order to improve
the transient response and eliminate the steady-state error
in DVR response, respectively. The proposed algorithm is
applied to some disturbances in load voltage caused by
induction motors starting, and a three-phase short circuit
fault. Also, the capability of the proposed DVR has been
tested to limit the downstream fault current.
The current limitation will restore the point of common
coupling (PCC) (the bus to which all feeders under study
are connected) voltage and protect the DVR itself.
The innovation here is that the DVR acts as a virtual
impedance with the main aim of protecting the PCC
voltage during downstream fault without any problem in
real power injection into the DVR. Simulation results show
the capability of the DVR to control the emergency
conditions of the distribution systems.
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RESEARCH ON THE WIND FARM REACTIVE POWER
COMPENSATION CAPACITY AND CONTROL TARGET
ABSTRACT
Wind generation rapid development has brought challenge
to the grid. Reactive voltage is the most outstanding and
one of the most concerned problems.
This paper introduces the concept of wind farms reactive
power compensation and wind power grid code with
respect to reactive power regulation all over the world,
gives the simplified approach to estimate reactive power
compensation capacity, and validates its efficiency with
the case study.
From grid reactive voltage control target and practical
operation routine, the paper analyses and compares the
impacts of two reactive power control targets, that is,
constant voltage and constant power factor, on the grid
steady-state operation.
The conclusion shows that the reactive power
compensation control target of wind farms should be
determined by the robustness of the grid integrated,
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hierarchical reactive power balance, wind turbines reactive
voltage
control
characteristic,
and
the
reactive
compensation device applied in wind farms.
FLEXIBLE D-STATCOM PERFORMANCE AS A FLEXIBLE
DISTRIBUTED GENERATION IN MITIGATING FAULTS
ABSTRACT
This paper proposes a flexible D-STATCOM (Distribution
Static COMpensator) and its new controller system, that be
able to both mitigate all types of faults and operate as a
Distributed Generation (DG), when it supplies power to
sensitive loads while the main utility source is
disconnected (i.e. it is under islanded operating condition).
Thus D-STATCOM operates same as a flexible DG (FDG)
and consequently, it is called Flexible D-STATCOM (FDSTATCOM). This paper validates the performance of FDSTATCOM system to mitigate power quality problems and
improve distribution system performance under all types
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of system related disturbances and system unbalanced
faults, such as Line-to-Line (LL) and Double Line to
Ground (DLG) faults and supplies power to sensitive loads
under islanding condition.
In this paper, the 12-pulse D-STATCOM configuration with
IGBT is designed and the graphic based models of the DSTATCOM are developed using the PSCAD/EMTDC
electromagnetic transient simulation program.
The reliability and robustness of the control schemes in
the system response to the voltage disturbances caused
by LL and DLG faults and islanded operating condition are
obviously proved in the simulation results.
POWER SYSTEM STABILITY ENHANCEMENT USING
STATIC SYNCHRONOUS SERIES COMPENSATOR (SSSC)
ABSTRACT
In this study, a static synchronous series compensator
(SSSC) is used to investigate the effect of this device in
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controlling active and reactive powers as well as damping
power system oscillations in transient mode.
The SSSC equipped with a source of energy in the DC link
can supply or absorb the reactive and active power to or
from the line. Simulations have been done in
MATLAB/SIMULINK environment.
Simulation results obtained for selected bus-2 in two
machine power system shows the efficacy of this
compensator as one of the FACTS devices member in
controlling power flows, achieving the desired value for
active and reactive powers, and damping oscillations
appropriately.
MATRIX CONVERTER-BASED UNIFIED
POWER-FLOW CONTROLLERS
ADVANCED DIRECT POWER CONTROL METHOD
ABSTRACT
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This paper presents a direct power control (DPC) for threephase matrix converters operating as unified power flow
controllers (UPFCs). Matrix converters (MCs) allow the
direct ac/ac power conversion without dc energy storage
links; therefore, the MC-based UPFC (MC-UPFC) has
reduced volume and cost, reduced capacitor power losses,
together with higher reliability.
Theoretical principles of direct power control (DPC) based
on sliding mode control techniques are established for an
MC-UPFC dynamic model including the input filter. As a
result, line active and reactive power, together with ac
supply reactive power, can be directly controlled by
selecting an appropriate matrix converter switching state
guaranteeing good steady-state and dynamic responses.
Experimental results of DPC controllers for MC-UPFC
show decoupled active and reactive power control, zero
steady-state tracking error, and fast response times.
Compared to an MC-UPFC using active and reactive power
linear controllers based on a modified Venturini highfrequency PWM modulator, the experimental results of the
advanced DPC-MC guarantee faster responses without
overshoot and no steady-state error, presenting no crosscoupling in dynamic and steady-state responses.
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MODELING, ANALYSIS, AND CONTROL FOR THE
RECTIFIER OF HYBRID HVDC SYSTEMS FOR DFIG-BASED
WIND FARMS
ABSTRACT
In order to improve the dynamic performance of the hybrid
HVdc system for doubly fed induction generator wind
farms, this paper presents the modeling, analysis, and
control methods for its line-commutated rectifier.
First, the state variable model of the rectifier subsystem on
the reference frame is derived considering different control
modes of the current source inverter subsystem. Then, the
ac current dynamic of the rectifier subsystem is
quantitatively analyzed based on the eigenvalue analysis
method.
According to the analysis results, a double loop control
scheme is designed: the inner loop utilizes the inverse
system control technique plus a switchable phase-lead
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compensator, and the outer loop implements an ordinary
propotional-integral controller.
Finally, the validity of the quantitative analysis method and
the superiority of the proposed control scheme are verified
by Simulink / SimPowerSystems simulations.
PERFORMANCE ANALYSIS OF LCL-T RESONANT
CONVERTER WITH FUZZY/PID CONTROLLER USING
STATE SPACE ANALYSIS
ABSTRACT
A closed loop series parallel resonant converter with LCLT configuration has been simulated and presented in this
paper. The fuzzy/PID controller has been used for closed
loop operation and the performance of proposed converter
has been estimated with the closed loop and the open loop
condition.
The mathematical model using state space approach has
been developed and simulated using MATLAB. The
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performance of the converter has been found to be better
when the fuzzy controller has been considered.
The Harmonic Spectrum and steady state error for various
load condition have been obtained to validate the role of
controllers. The proposed approach is expected to provide
better voltage regulation for dynamic load conditions.
A 2.4-GHZ ENERGY-EFFICIENT TRANSMITTER
WIRELESS MEDICAL APPLICATIONS
FOR
Biomedical Circuits and Systems, IEEE Transactions on
ABSTRACT
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A 2.4-GHz energy-efficient transmitter (TX) for wireless
medical applications is presented in this paper. It consists
of four blocks: a phase-locked loop (PLL) synthesizer with
a direct frequency presetting technique, a class-B power
amplifier, a digital processor, and nonvolatile memory
(NVM).
The frequency presetting technique can accurately preset
the carrier frequency of the voltage-controlled oscillator
and reduce the lock-in time of the PLL synthesizer, further
increasing the data rate of communication with low power
consumption.
The
digital
processor
automatically
compensates preset frequency variation with process,
voltage, and temperature.
The NVM stores the presetting signals and calibration data
so that the TX can avoid the repetitive calibration process
and save the energy in practical applications. The design
is
implemented
in
0.18µm
radio-frequency
complementary metal-oxide semiconductor process and
the active area is 1.3 mm 2.
The TX achieves 0-dBm output power with a maximum data
rate of 4 Mb/s/2 Mb/s and dissipates 2.7-mA/5.4-mA current
from a 1.8-V power supply for on-off keying/frequency-shift
keying modulation, respectively. The corresponding
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energy efficiency is 1.2 nJ/b·mW and 4.8 nJ/b· mW when
normalized to the transmitting power.
A DECISION-SUPPORT MODEL FOR FILTERING RFID
READ DATA IN SUPPLY CHAINS
ABSTRACT
The introduction of radio-frequency identification (RFID)
tags in supply chains engenders the need for
incorporating and utilizing the additional generated data. It
is generally assumed that these data, once generated, are
complete and rife with necessary information for making
decisions.
The reality is, however, that these data are not error free.
Common errors observed in these data include false
positives and false negatives. Given that these data are
among the set of primary inputs for decision-making
purposes, the read-rate accuracy is of paramount
importance for effectively managing supply chains
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incorporating such data. Although there are means by
which the RFID tag read rate could be improved to a
certain extent, the errors in read rate cannot be completely
eliminated, and decision makers are left to deal with such
data while managing the supply chain.
We present and illustrate few algorithms that can be used
to reduce false read rates. We consider models for filtering
data that are already being gathered in RFID systems and
utilize it to improve read-rate accuracy. We implement the
proposed models and illustrate their performance.
A
HYBRID
WIRED/WIRELESS
NETWORKING
INFRASTRUCTUREFOR GREENHOUSE MANAGEMENT
This paper appears in: Instrumentation and Measurement,
IEEE Transactions on
ABSTRACT
In this paper, the problems related to the management of a
farm made up of several greenhouses are discussed. The
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management of this kind of farms requires data acquisition
in each greenhouse and their transfer to a control unit
which is usually located in a control room, separated from
the production area.
At present, the data transfer between the greenhouses and
the control system is mainly provided by a suitable wired
communication system, such as a fieldbus. In such
contexts, even though the replacement of the wired system
with a fully wireless one can appear very attractive, a fully
wireless system can introduce some disadvantages.
A solution based on a hybrid wired/wireless network,
where Controller Area Network and ZigBee protocols are
used, is presented along with all the related problems that
this integration involves. In particular, in order to integrate
at the Data Link Layer the wireless section with the wired
one, a suitable multiprotocol bridge has
been
implemented.
Moreover, at the Application Layer, porting of Smart
Distributed System services on ZigBee, called ZSDS,
allows one to access the network resources independently
from the network segment they are connected to.
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A SELF-SUPPLIED INERTIAL PIEZOELECTRIC ENERGY
HARVESTER WITH POWER-MANAGEMENT IC
ABSTRACT
Harvesting energy from ambient vibrations is a promising
technology for fully autonomous wireless sensor nodes,
which can give birth to new applications in biomedical,
industrial, and environmental monitoring.
There have been independent solutions in increasing the
harvesting efficiency either on the mechanical harvester or
on its power management circuitry.
Recently, a piezo electric MEMS harvester using AIN was
demonstrated to generate enough energy to autonomously
power a wireless temperature sensor with a full-bridge
rectifier built with off-the-shelf components. Meanwhile,
AC-DC converters for piezoelectric harvesters have been
designed to enable efficient power extraction, or efficient
rectification of low-voltage outputs, and have been tested
with commercial meso-scale piezoelectric beams.
However, to realize an efficient stand-alone energy
generator platform, it is necessary to integrate these
efforts into a single low-volume system. This paper
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presents a self-supplied energy generator, which includes
a MEMS harvester hybridly integrated with its power
management circuitry for autonomous charging of an
energy reservoir.
A STANDALONE RFID INDOOR POSITIONING SYSTEM
USING PASSIVE TAGS
This paper appears:
Transactions on
Industrial
Electronics,
IEEE
ABSTRACT
Indoor positioning systems (IPSs) locate objects in closed
structures such as office buildings, hospitals, stores,
factories, and warehouses, where Global Positioning
System devices generally do not work. Most available
systems apply wireless concepts, optical tracking, and/or
ultrasound.
This paper presents a standalone IPS using radio
frequency identification (RFID) technology. The concept is
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based on an object carrying an RFID reader module, which
reads low-cost passive tags installed next to the object
path. A positioning system using a Kalman filter is
proposed.
The inputs of the proposed algorithm are the
measurements of the backscattered signal power
propagated from nearby RFID tags and a tag-path position
database. The proposed algorithm first estimates the
location of the reader, neglecting tag-reader angle-path
loss.
Based on the location estimate, an iterative procedure is
implemented, targeting the estimation of the tag-reader
angle-path loss, where the latter is iteratively compensated
from
the
received
signal
strength
information
measurement. Experimental results are presented,
illustrating the high performance of the proposed
positioning system.
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A TESTBED FOR ANALYZING SECURITY OF SCADA
CONTROL SYSTEMS (TASSCS)
ABSTRACT
The critical infrastructures of our society are in the
process of being modernized. Most significantly impacted
are the industrial control systems through replacement of
old electromechanical systems with advanced computing
and communication technologies. This modernization has
introduced new vulnerabilities to those infrastructures.
Securing critical infrastructures is a challenging research
problem, as these control systems were not designed with
security in mind. This paper presents a testbed designed
to study and simulate the various available techniques for
securing and protecting Supervisory Control and Data
Acquisition (SCADA) systems against a wide range of
cyber attacks.
The testbed is also used to evaluate the detection rate,
false alerts and effectiveness of the protection techniques.
We present preliminary results on using the testbed to
detect a selected set of cyber attacks and the impact of the
protection techniques on the operations of the system.
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A VIBRATION-BASED ELECTROMAGNETIC ENERGY
HARVESTER USING MECHANICAL FREQUENCY UPCONVERSION METHOD
ABSTRACT
This
paper
presents
a
new
vibration-based
electromagnetic energy harvester using a mechanical
frequency up-conversion method for harvesting energy
from external low-frequency vibrations within a range of 110 Hz.
The structure consists of a magnet placed on a diaphragm,
a polystyrene cantilever carrying a pick-up coil, and a
mechanical
barrier
which
converts
low-frequency
vibrations to a higher frequency, hence increasing the
efficiency of the system. The tested structure proved to
generate 88.6 mV and 544.7 µW rms power output by upconverting 10-Hz external vibration to 394 Hz. The obtained
power density is 184 µW/cm3, with a device volume of 2.96
cm3.
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An analytical model is developed to analyze the behavior
of the energy harvester prototypes with various
dimensions. The model predicts the performance
parameters of the structures within 5% error range. The
effect of scaling down the device dimensions is
investigated through the developed model and fabricated
prototypes.
It is shown that the power density of the energy harvester
is increased as its dimensions are scaled down, proving
that the proposed structure is a good candidate to be used
in low-power wireless microsystems operating at lowfrequency vibrations.
AN INTELLIGENT LIGHTING SYSTEM FOR EXHIBITION
APPLICATIONS
ABSTRACT
This paper presents the design and the implementation of
a lighting system which is able to detect the approach of
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the visitors and then turn the lighting onto the normal
intensity to let the exhibition be bright enough.
All lightings are equipped with the energy-saving function
which will turn itself to the dimming level automatically
after the visitors' leaving. PIR (Passive Infrared) sensors
are utilized in the system instead of a video camera for the
purposes of both cost-down and privacy issue.
The lightings are also designed to have network interface
to let them be able to be connected together to form an
intelligent lighting system which can not only collect the
exhibition information but also help the administrators to
secure the exposition.
AUTOMATED
OFF-LINE
RESPIRATORY
EVENT
DETECTION FOR THE STUDY OF POSTOPERATIVE APNEA
IN INFANTS
ABSTRACT
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Previously, we presented automated methods for thoracoabdominal asynchrony estimation and movement artifact
detection in respiratory inductance plethysmography (RIP)
signals. This paper combines and improves these methods
to give a method for the automated, off-line detection of
pause, movement artifact, and asynchrony.
Simulation studies demonstrated that the new combined
method is accurate and robust in the presence of noise.
The new procedure was successfully applied to
cardiorespiratory signals acquired postoperatively from
infants in the recovery room.
A comparison of the events detected with the automated
method to those visually scored by an expert clinician
demonstrated a higher agreement (? = 0.52) than that
amongst several human scorers (? = 0.31) in a clinical
study.
The method provides the following advantages: first, it is
fully automated; second, it is more efficient than visual
scoring; third, the analysis is repeatable and standardized;
fourth, it provides greater agreement with an expert scorer
compared to the agreement between trained scorers; fifth,
it is amenable to online detection; and lastly, it is
applicable to uncalibrated RIP signals. Examples of
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applications include respiratory monitoring of postsurgical
patients and sleep studies.
AUTOMATED
URBAN
DRINKING
WATER
SUPPLY
CONTROL AND WATER THEFT IDENTIFICATION SYSTEM
ABSTRACT
The rapid growing of the wide urban residential areas
imposes the expansion as well as the modernization of the
existing water supply facilities. Along with this one more
problem is identified in the water supply channels, some
people use ½ HP to 1 HP pump to suck the water directly
from the channel of their home street.
Process automation system based upon utilization of an
industrial PLC and PC systems including all the network
components represents the best way to improve the water
distribution technological process. The water theft can be
best monitored by the flow variations given by the flow
sensors mounted on the channels.
The system includes Remote Terminal Units - RTU,
specific transducers and actuators distributed on a wide
geographical area and control and power panels for the
pump stations. The reliable instrumentation connected to
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PLC or RTU assure real time monitoring of the main
technological parameters of large water distribution
networks.
The data acquired of SCADA system (Supervisory Control
and Data Acquisition) represent the support for
optimization of the process and data- driven Decision
Support System. The system uses HMI implemented on PC
to ensure the process supervision and remote control
functions based on OPC technologies and wireless
communication components for WAN data transfer.
The complete SCADA system for water distribution enable
the user to get a high operation safety of the network, a
cost effective use of equipment, energy efficiency and
optimize the daily operation and maintenance procedures.
DESIGN AND IMPLEMENTATION OF A HOME EMBEDDED
SURVEILLANCE SYSTEM WITH ULTRA-LOW ALERT
POWER
This paper appears in: Consumer Electronics, IEEE
Transactions on
ABSTRACT
In this paper we design and implement a home embedded
surveillance system with ultra-low alert power. Traditional
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surveillance systems suffer from an unnecessary waste of
power and the shortcomings of memory conditions in the
absence of invasion. In this design we use Pyroelectric
Infrared sensors (PIR) and pressure sensors as the alert
group in windows and doors where an intruder must pass
through.
These low-power alert sensors wake up the MCU (Micro
Controller Unit) which has power management for the
ultrasonic sensors and PIR sensors indoors. This state
transition method saves a large number of sensors
required for the alert power.
We also use the Majority Voting Mechanism (MVM) to
manage the sensor groups to enhance the probability of
multiple sensors sensing. After the MCU sends the sensor
signals to the embedded system, the program starts the
Web camera. Our sensing experiment shows that we
reduce the system's power consumption.
DESIGN OF LANDSLIDE WARNING SYSTEM
ABSTRACT
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In recent years, the frequent occurrence of landslide
disasters, caused great harm to people's lives and
properties. This paper designs some wireless sensor
monitoring nodes distributed on the hillside, they
construct a wireless data collection network based on the
ZigBee protocol.
This design combines GSM wireless communication
technology and wireless sensor network, it have
completed the work from the system solution to the whole
process of software and hardware design. The result
proves that each node works stably and the status of
network communication is good.
This design can collects the depth of water in the
mountain and the slope angle of the hillside, and provides
the monitoring center with warning information in time, so
related departments can take effective measures rapidly to
protect people's lives and properties
DESIGN OF MULTI-SENSOR INTEGRATED NAVIGATION
SYSTEM FOR LAND VEHICLE
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ABSTRACT
In order to improve the accuracy and reliability of the
vehicle navigation, we select the ring laser gyro (RLG)
strapdown inertial navigation system (SINS) as the core
navigation system, and select GPS and odometer as the
navigation aids, the multisensor integrated navigation
system for land vehicle based on the multi-sensor
information
fusion
technology
is
designed
and
accomplished in this paper.
With respect to the advantages and disadvantages of all
the sensors, according to the actual work condition, in this
system the sensors information is rationally selected as
measurements, and the centralized Kalman filter algorithm
is adopted to estimate and correct the errors of the
system.
Thus it can realize the high-accuracy, continuous and
reliable navigation of the system. The theoretical analysis
and experiment results show that the designed system
takes on higher accuracy and reliability and satisfies
different application demands, so it is more suitable for
practical application.
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DETECTION OF COGNITIVE INJURED BODY REGION
USINGMULTIPLE TRIAXIAL ACCELEROMETERS FOR
ELDERLY FALLING
ABSTRACT
This paper aimed to use several triaxial acceleration
sensor devices for joint sensing of injured body parts,
when an accidental fall occurs. The model transmitted the
information fed by the sensors distributed over various
body parts to the computer through wireless transmission
devices for further analysis and judgment, and employed
cognitive adjustment method to adjust the acceleration
range of various body parts in different movements.
The model can determine the possible occurrence of fall
accidents, when the acceleration significantly exceeds the
usual acceleration range. In addition, after a fall accident
occurs, the impact acceleration and normal (habitual)
acceleration can be compared to determine the level of
injury.
This study also implemented a sensing system for
analysis. The area of the body parts that may sustain
greater impact force are marked red in this system, so that
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more information can be provided for medical personnel
for more accurate judgment.
DEVELOPMENT OF A DISTRIBUTED DATA COLLECTION
SYSTEM BASED ON EMBEDDED ETHERNET
ABSTRACT
We describe a low cost distributed data collection system
based on embedded Ethernet. Embedded Ethernet is
nothing but a microcontroller, which is able to
communicate with the network. Low cost microcontrollers
have memory limitations, and therefore, have limited
connectivity options.
Enabling a microcontroller to communicate to a data
communication network would allow greater flexibility and
enhance their usage in several applications that require
distributed data collection, monitoring or controlling such
applications.
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ENHANCED
VOICE
ACTIVITY
DETECTION
USING
ACOUSTIC EVENT DETECTION AND CLASSIFICATION
Consumer Electronics, IEEE Transactions on
ABSTRACT
We examine user-friendly voice interface that requires the
hands-free speech acquisition in the continuously
listening environment. The traditional voice activity
detection (VAD) algorithms cannot successfully identify
potential acoustic event sounds from speech. This makes
the speech recognition system frequently or incorrectly
activated.
In this paper, we propose a novel voice activity detection
technique that consists of two major modules: 1)
classification and 2) detection module. In the classification
module, we label the successive audio segments based on
the training models. Then, in the detection module, we
remove the acoustic event sounds and make decision of
the explicit utterance boundary from the input audio
stream.
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As a result, the proposed technique enables the efficient
operation of speech recognition in the continuously
listening environment without any touch and/or key input.
Experiments in a real-world environment and performance
comparison with state-of-the-art techniques are conducted
to demonstrate the effectiveness of the proposed
technique.
FAULT
LOCATION
IN
NETWORKS: A CASE STUDY
UNDERGROUND
POWER
This paper appears in: Innovative Smart Grid Technologies
(ISGT), 2011 IEEE PES
ABSTRACT
The present paper addresses the topic of fault location in
power networks with cable lines. In the era of smart-grid
the demand of intelligent measurement systems capable of
providing quickly and with high accuracy the right location
of faults in power networks is growing fast. Many
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proposals can be found in literature relevant to different
approaches. Some commercial instrumentation is also
available on the market for this purpose.
Protection relays implementing this feature can either be
found. This paper presents the experimental results of a
measurement campaign carried out in the MV power
network in the city of Milan (Italy). For this purpose the
local Utility (A2A SpA) is using a commercial distributed
measurement system (the ALTEA FLS) for locating both
faults and also fast transients due to customers' loads
operation.
Preliminary experimental results have shown good
performance. They have been better analyzed in order to
investigate over the reliability and the accuracy of such
measurement system.
FEATURE SELECTION FOR ACCELEROMETER-BASED
POSTUREANALYSIS IN PARKINSON’S DISEASE
This paper appears in: Information
Biomedicine, IEEE Transactions on
Technology
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ABSTRACT
Posture analysis in quiet standing is a key component of
the clinical evaluation of Parkinson's disease (PD),
postural instability being one of PD's major symptoms.
The aim of this study was to assess the feasibility of using
accelerometers to characterize the postural behavior of
early mild PD subjects.
Twenty PD and 20 control subjects, wearing an
accelerometer on the lower back, were tested in five
conditions characterized by sensory and attentional
perturbation. A total of 175 measures were computed from
the signals to quantify tremor, acceleration, and
displacement of body sway.
Feature selection was implemented to identify the subsets
of measures that better characterize the distinctive
behavior of PD and control subjects. It was based on
different classifiers and on a nested cross validation, to
maximize robustness of selection with respect to changes
in the training set.
Several
subsets
of
three
features
achieved
misclassification rates as low as 5%. Many of them
included a tremor-related measure, a postural measure in
the frequency domain, and a postural displacement
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measure. Results suggest that quantitative posture
analysis using a single accelerometer and a simple test
protocol may provide useful information to characterize
early PD subjects. This protocol is potentially usable to
monitor the disease's progression
INTELLIGENT
ONLINE
MEASUREMENT
AND
MANAGEMENT OF ENERGY METER DATA THROUGH
ADVANCED WIRELESS NETWORK
ABSTRACT
Recently the Electrical supply companies are trying to
adopt the electronic measurement of energy consumption
data because of reduced manufacturing cost, improved
measurement accuracy, increased timely information,
miniature size and many other benefits that go well beyond
the traditional rotor-plate energy meter type.
In this paper with the help of an energy chip, an improved
energy metering solution is developed, where automating
the progression of measurement through digital wireless
communication technique is adopted to get the above
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benefits along with smooth control. The developed energy
meter calculates the total average active power mainly for
residential consumers.
The hardware circuit accepts single phase voltage and
currents as its inputs and provides the output in the form
of logic data proportional to the average real power. This
data is fed to a remote computer server through the
wireless ZigBee network that represents the concept of
distant wireless metering, practically involving no
manpower. This paper also presents a software solution
developed for total electrical energy billing and data
management system.
LED INDICATOR FOR HEART RATE MONITORING SYSTEM
IN SPORT APPLICATION
This paper appears in: Signal Processing and its
Applications (CSPA), 2011 IEEE 7th International
Colloquium on
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ABSTRACT
This paper presents a current invention for monitoring the
athletes' heart rate during training or exercise session. A
bracelet with different color code of Light Emitting Diode
(LED) is designed as a wrist heart rate monitor.
This color-coding makes the heart rate easier to monitor
and enabling the user to know their heart rate range at a
certain moment. Our works investigate the used of Zigbee
and ANT+ as a transmission medium from transmitter
(chest strap) to receiver (bracelet).
Different colors signify different ranges of heart rate.
Preliminary result demonstrated that it is very helpful for
athletes and coaches to monitor the fitness level of
athletes and regulate their exercise training regime in a
more effective and safer manner
MODEL-BASED OPTIMAL EFFICIENCY CONTROL OF
INDUC-TION GENERATORS FOR WIND POWER SYSTEMS
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ABSTRACT
In this paper, a novel control algorithm for optimal
operating efficiency of induction generators for wind
power generation is presented. The proposed method is
based on the flux level reduction, where the flux level is
computed from the machine model for the optimum d-axis
current of the generator.
For the vector-controlled induction generator, the d-axis
current controls the excitation level in order to minimize
the generator loss while the q-axis current controls the
generator torque, by which the speed of the induction
generator is controlled according to the variation of the
wind speed in order to produce the maximum output
power.
An experimental setup has been implemented in laboratory
to validate the theoretical development. The experimental
results show that the loss minimization process is more
effective at low wind speed and that the percent of power
saving can approach to 25%. Experimental results are
shown to verify the validity of the proposed scheme
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MOTION COMPENSATION WITH ONE-AXIS GYROSCOPE
AND TWO-AXIS ACCELEROMETER FOR AUTOMOTIVE
SAR
ABSTRACT
On the basis of a previous one-axis accelerometer motion
compensation system for automotive SAR, an updated
scheme is presented in this paper, which contains a oneaxis gyroscope and two-axis accelerometer.
The requirement for extra Degrees of Freedom (DoF) leads
to a new motion signal model. The complete procedure of
calculating motion deviation in image display plane (IDP)
from the raw roll angle rate and accelerations measured in
body frame has been presented.
The requirement for the Inertial Measurement Unit (IMU)
has been analyzed quantitatively. According to the outfield measurements, the improved motion compensation
system can cope with worse road conditions.
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ON-LINE RECOGNITION OF DRIVING ROAD CONDITION
USING SUPPORT VECTOR MACHINE
ABSTRACT
A person operating a mobile robot in a remote
environment receives a realistic visual feedback about the
condition of the road on where the mobile robot is moving.
A categorization of the road condition is necessary to
evaluate the condition for safe and comfortable driving.
For this purpose, the mobile robot should be capable of
recognizing and classifying the condition of the road
surfaces. In a previous research, author proposed a
method to recognize the type of the road surfaces on the
basis of the friction between the mobile robot and the road
surfaces.
The friction is estimated by a reaction torque observer,
and a Support Vector Machine (SVM) is used to classify
the surfaces. In this paper, SVM is calculated on-line, and
multi-class classification is realized.
Moreover, the operator is given feedback of haptic
information by using mobile-hapto system As a result, the
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operator is given visual and force feedback about road
condition. By experiments, the validity of the proposed
method is confirmed.
OPTIMIZED WIND ENERGY HARVE STING SYSTEM USING
RESISTANCE EMULATOR AND ACTIVE RECTIFIER FOR
WIRELESS SENSOR NODES
ABSTRACT
This paper presents an optimized wind energy harvesting
(WEH) system that uses a specially designed ultra-lowpower-management circuit for sustaining the operation of
a wireless sensor node.
The proposed power management circuit has two distinct
features: 1) an active rectifier using MOSFETs for
rectifying the low amplitude ac voltage generated by the
wind turbine generator under low wind speed condition
efficiently and 2) a dc-dc boost converter with resistor
emulation algorithm to perform maximum power point
tracking (MPPT) under varying wind-speed conditions.
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As compared to the conventional diode-bridge rectifier, it
is shown that the efficiency of the active rectifier with a
low input voltage of 1.2 V has been increased from 40% to
70% due to the significant reduction in the ON-state
voltage drop (from 0.6 to 0.15 V) across each pair of
MOSFETs used.
The proposed robust low-power microcontroller-based
resistance emulator is implemented with closed-loop
resistance feedback control to ensure close impedance
matching between the source and the load, resulting in an
efficient power conversion.
From the experimental test results obtained, an average
electrical power of 7.86 mW is harvested by the optimized
WEH system at an average wind speed of 3.62 m/s, which
is almost four times higher than the conventional energy
harvesting method without using the MPPT.
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PERFORMANCE OF POWER LINE COMMUNICATION
SYSTEMS WITH NOISE REDUCTION SCHEME FOR SMART
GRID APPLICATIONS
This paper appears in: Consumer Electronics,
Transactions on
IEEE
In this paper, we propose clipping scheme and equalizer
as methods to reduce the effects of impulsive noise and
channel attenuation in power line communication (PLC)
system.
Clipping is cutting off the amplitude of the received signal
over threshold level without its phase change in order to
reduce noise effects. The equalizer compensates for
effects of PLC channel. The performance is evaluated in
terms of bit error rate (BER).
From simulation results, it is confirmed that the proposed
clipping scheme has slightly better performance than
conventional PLC system. The results of the paper can be
applied to PLC systems for smart grid.
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PHYSICAL MOVEMENT MONITORING USING BODY
SENSORNETWORKS: A PHONOLOGICAL APPROACH TO
CONSTRUCT SPATIAL DECISION TREES
This paper appears
Transactions on
in:
Industrial
Informatics,
IEEE
ABSTRACT
Monitoring human activities using wearable sensor nodes
has the potential to enable many useful applications for
everyday situations. Limited computation, battery lifetime
and communication bandwidth make efficient use of these
platforms crucial.
In this paper, we introduce a novel classification model
that identifies physical movements from body-worn inertial
sensors while taking collaborative nature and limited
resources of the system into consideration. Our action
recognition model uses a decision tree structure to
minimize the number of nodes involved in classification of
each action.
The decision tree is constructed based on the quality of
action recognition in individual nodes. A clustering
technique is employed to group similar actions and
measure quality of per-node identifications. We pose an
optimization problem for finding a minimal set of sensor
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nodes contributing to the action recognition. We then
prove that this problem is NP-hard and provide fast greedy
algorithms to approximate the solution.
Finally, we demonstrate the effectiveness of our
distributed algorithm on data collected from five healthy
subjects. In particular, our system achieves a 72.4%
reduction in the number of active nodes while maintaining
93.3% classification accuracy.
AN INTELLIGENT BLIND ROD AND NAVIGATION
PLATFORM BASED ON ZIGBEE TECHNOLOGY
ABSTRACT
This article introduces an intelligent blind rod and
navigation platform based on ZigBee technology. This
blind rod can detect and analyze the situation on road and
warn the blind to avoid obstacles by ultrasonic
measurement.
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The navigation platform based on ZigBee technology can
help the blind know different directions the path leads to.
This intelligent blind rod can better serve for the blind's
independent travel.
THE RESEARCH ON
MONITORING SYSTEM
ZIGBEE-BASED
MINE
SAFETY
ABSTRACT
In this paper the research method of Mine Safety
Monitoring System based on ZigBee is elaborated, and the
hardware design of ZigBee sensor node and system
software design are discussed.
The self-organizing routing algorithm for ZigBee networks
and the gateway design and systems integration are also
studied. ZigBee-based Mine Safety Monitoring System can
achieve a variety of safety factors of production, and
underground environment (such as gas, temperature,
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humidity and other environmental indicators) for
monitoring,
controlling
mine
production,
safety
management to provide a good basis for decision making
A NOVEL THREE PHASE ENERGY METER MODEL WITH
WIRELESS DATA READING AND ONLINE BILLING
SOLUTION
ABSTRACT
Measurement of data electronically leads a combination of
benefits that go well beyond the traditional rotor-plate
energy meter design. In this paper with the help of an
energy chip, an improved novel three phase energy
metering solution is developed. Automating the
progression of measurement through digital wireless
communication technique is done to get high accuracy,
smooth control and better reliability.
The developed energy meter calculates the total average
active power mainly for industrial and commercial
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applications. The hardware circuit accepts three phase
voltages and currents as its inputs and provides the
output in the form of serial interfaced data equivalent to
the average real power.
This serial data is fed to a remote personal computer
through the wireless ZigBee network that represents the
concept of distant wireless metering, practically involving
no manpower. The paper also presents a software solution
developed for total electrical energy billing and data
management system
DESIGN OF SENSOR MODULES OF
INTELLIGENT ENERGY-SAVING SYSTEM
ACTIVE
&
ABSTRACT
This paper presented new methodology of intelligent
energy-saving system to accomplish the goal of real
energy-saving from the view-point of system-orient
strategy instead of materials.
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In this system design included sensors of temperature,
humidity, luminance, CO2, and power detector (smart
outlets) in addition to designing backend intelligent agent
technology to quickly response to the feedback control
system through hybrid net-work of ZigBee and Bluetooth
technology which would sensor the running parameters
and environment factors of energy-saving system
TRIAL & EXPERIMENTATION OF A
MONITORING SYSTEM FOR ELDERLY
SMART
HOME
ABSTRACT
Smart home monitoring target to improve comfort, quality
of life, and safety by monitoring mobility and physiological
parameters using wireless sensors. The wireless sensors
in a network are capable of performing various tasks and
sense many types of information for different applications.
This technology has ample potential to change the way we
live and work. It has been observed that the population of
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the elderly people is in a steady raise throughout the
world. And the elderly wish to live in their own home as
long as possible, however if they prefer to live alone they
do however require constant monitoring, so that medical
help can be provided immediately in times of dire needs.
Surely with the help of wireless sensors based home
monitoring there is a better way for these people to resolve
this problem. This paper will focus on the characteristics
of the sensors for this type of application.
Performance of the smart home monitoring system, zigbee
radio frequency (RF) communication has been tested.
Instead of using huge number of sensor to monitor smart
home, an approach of deploying a few but highly accurate
numbers of inexpensive smart sensors will be discussed.
Also the requirement of the sensor for making a smart
sensor network will be reviewed. A typical in-house
developed system for home monitoring for elder-care
application will be presented.
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FLEXIBLE STRUCTURAL POWER MONITORING DEVICE
WITH CLAMP TYPE CT SENSORS
ABSTRACT
We propose the ZigBee-based clamp type power
monitoring system to be applied in various environments.
With these properties, it is expected to provide users the
intelligent and detailed power management
A ZIGBEE SMART ENERGY IMPLEMENTATION
ENERGY EFFICIENT BUILDINGS
FOR
ABSTRACT
Energy efficiency in buildings is one of the promising
fields of application of wireless sensor networks. Simple
affordable sensors can be used to monitor the power
consumption of appliances in buildings to implement
smart algorithms in order to conserve energy.
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The ARTEMIS Joint Undertaking project eDIANA
(Embedded Systems for Energy Efficient Buildings) funded
by the European Commission aims to improve energy
efficiency in buildings by using embedded technologies. In
the eDIANA platform the energy consumed by household
or office appliances is monitored by using IEEE
802.15.4/Zigbee-compliant devices.
In this paper we describe the prototype that we have
developed by using ZigBee Smart Energy Profile in order
to realize the eDIANA application scenarios. Moreover we
provide latency statistics and packet error rate obtained
through our test-bed in different monitoring scenarios
FLOOD MONITORING OF DISTRIBUTION SUBSTATION IN
LOW-LYING AREAS USING WIRELESS SENSOR NETWORK
ABSTRACT
In this paper, a novel wireless sensing network node with
2.4 GHz communication and flood detection with 0.02
volt/mm sensitivity is presented for flood monitoring of
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distribution substation of electrical utilities in low-lying
area.
The sensor node is as compact as 8 cm × 6 cm and a low
power consumption of 860 mW. When a liquid level
detector detects an abnormal water level near the
substation room, a signal can be transmitted in 115 kbps
via a Zigbee module to a control center. It may reduce the
risks of damage of the substation and subsequently
ensure the power supply safety.
VOICE
RECOGNITION
AUTOMATION SYSTEM
BASED
WIRELESS
HOME
ABSTRACT
Home Automation industry is growing rapidly; this is
fuelled by the need to provide supporting systems for the
elderly and the disabled, especially those who live alone.
Coupled with this, the world population is confirmed to be
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getting older. Home automation systems must comply with
the household standards and convenience of usage.
This paper details the overall design of a wireless home
automation system (WHAS) which has been built and
implemented. The automation centres on recognition of
voice commands and uses low-power RF ZigBee wireless
communication modules which are relatively cheap.
The home automation system is intended to control all
lights and electrical appliances in a home or office using
voice commands. The system has been tested and verified.
The verification tests included voice recognition response
test, indoor ZigBee communication test, and the
compression and decompression tests of DPCM
(Differential Pulse Code Modulation) speech signals.
The tests involved a mix of 35 male and female subjects
with different English accents. 35 different voice
commands were sent by each person. Thus the test
involved sending a total of 1225 commands and 79.8% of
these commands were recognised correctly.
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MEASUREMENT AND MONITORING OF PERFORMANCE
PARAMETERS OF DISTRIBUTED SOLAR PANELS USING
WIRELESS SENSORS NETWORK
ABSTRACT
This paper has reported the design and development work
of a wireless performance monitoring of distributed solar
panel along with automated data logging. The developed
system is portable, simple and configured based on the
available resources in the laboratory.
The system can be extended for wide range of solar cells
for material research and development activities. The
fabricated system has been used for our research and very
satisfactory results are obtained.
ZIGBEE/GPS TRACKING SYSTEM FOR ROWING RACES
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ABSTRACT
In this paper a ZigBee/GPS Tracking System for Rowing
Races is presented. The system provides real-time
monitoring of boat position. Potential applications
includes, race monitoring, aided-training and safety
systems.
The system is composed of two main types of modules,
Mobile Units equipped with a GPS receiver (in the boat),
and a fixed one composed by the Central Unit and the
Race Manager, located in the operations room. The
communication between the Central and the Mobile units
is provided by a point to multipoint ZigBee wireless
network.
At the current development stage a system prototype was
developed and used for testing purposes. Preliminary
tests, in order to make a first assessment of system
functionalities, were performed in a simulated land
environment and the obtained results were promising
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SIMULATION
OF
EARTHQUAKES
THROUGH GSM NETWORK
AND
TSUNAMI
ABSTRACT
Every year thousands of people die because of earthquake
occurs in a dangerous place or during a defenseless sleep.
Here's a GSM-based seismic alert system that could warn
before an earthquake strikes. Earthquakes strike without
warning.
The resulting damage can be minimized and lives can be
saved if people living in the earthquake-prone area are
already prepared to survive the strike. This requires a
warning before strong ground motion from the earthquake
arrival. Such a warning system is possible because of
energy wave released at the epicenter of the earth quake
travels slower than light.
The warning signal from the earthquake epicenter can be
transmitted
to
different
places
using
satellite
communication network, fiber-optics network, pager
service, Cell phone services or a combination of these.
The satellite-based network is ideal when an alert system
has to cover a large country like India.
For earthquake-prone states like Gujarat, a seismic alert
system using the global system for mobile communication
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network spread throughout the state is proposed here.
This system does not try to find the epicenter or fault line
caused by the earthquake. It simply monitors the earth
vibrations and generates alert signal when the level of
earth vibrations crosses a threshold.
BLIND ASSISTANT NAVIGATION SYSTEM
ABSTRACT
This paper presents the architecture as well as the
implementation of a system that helps blind person
navigate independently within an enclosed environment
such as the home. The system uses a wireless mesh
network to provide the first level localization.
It also incorporates additional components to provide
more refined location and orientation information. Optimal
path planning is done by a server that communicates
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wirelessly with the portable mobile unit that can be pushed
by the blind person.
The blind person issues commands and receives direction
responses using audio signals.
AUTOMATIC DOCKING SYSTEM FOR RECHARGING HOME
SURVEILLANCE ROBOTS
This paper appears in:
Transactions on
Consumer Electronics, IEEE
ABSTRACT
This paper presents the development and characterization
of a surveillance robot with automatic docking and
recharging capabilities for home security. The proposed
system is composed of a surveillance robot and a docking
station.
The palm-sized surveillance robot has a triangular shape
with three wheels. It communicates with the general
wireless home router through WiFi. It communicates with
the docking station through ZigBee and serves as a mobile
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wireless sensor network gateway. The docking station has
a trapezoidal structure with an arc-shaped docking
interface.
A docking method based on the self-localization of the
robot and the infrared detectors of the docking station is
proposed. The robot can return to the docking station for
recharging operations when the on-board battery is too
low. The experimental results show that the prototype
robot achieved a success rate of 90% after 60 different
docking attempts.
DIGITAL CONTROL FOR HOME LIGHTING SYSTEMS WITH
ZIGBEE COMMUNICATION
ABSTRACT
For the digital control of fluorescent, in candescent and
LED lamps, our design contains an integrated lighting
controller based on an embedded system, interface
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circuits, ZigBee communication and a user-friendly GUI on
a handheld device.
MONITORING PATIENTS' SIGNS WIRELESSLY
ABSTRACT
Recent developments in off-the-shelf wireless embedded
computing boards and the increasing need for efficient
health monitoring systems, fueled by the increasing
number of patients, has prompted R&D professionals to
explore better health monitoring systems that are both
mobile and cheap.
This work investigates the feasibility of using the ZigBee
embedded technology in health-related monitoring
applications. Selected vital signs of patients are acquired
using sensor nodes and readings are transmitted
wirelessly using devices that utilize the ZigBee
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communications protocols. A prototype system has been
developed and tested with encouraging results
DESIGN OF A WIRELESS MEDICAL MONITORING SYSTEM
ABSTRACT
This paper provides the design of a Medical Monitoring
Terminal use C8051F021 MCU and CC2420 RF chip based
on Zigbee technology.
The Monitoring Terminal can detect the patient's real-time
body temperature, heart rate and other physiological
informations, and transmit them to the control center.
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REAL TIME PADDY CROP FIELD MONITORING USING
ZIGBEE NETWORK
ABSTRACT
Sensors are the essential device for precision agricultural
applications. In this paper we have detailed about how to
utilize the sensors in paddy crop field area and explained
about Wireless Sensor Network (WSN), Zigbee network,
Protocol stack, zigbee Applications and the results are
given,
when
implemented
the
zigbee
network
experimentally in real time environment.
This paper proposed idea about monitoring the crop field
area without human interaction. The fundamental concept
of this paper is to provide a highly enabled monitoring of
crop field. This paper is focus on the sensing and
monitoring of the crop field and gives various sensing
analyzes in the paddy crop field.
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RF
FINGERPRINTING
PHYSICAL
ANTICOUNTERFEITING APPLICATIONS
OBJECTS
FOR
ABSTRACT
Rendering typical RF identification (RFID) tags physically
unique
and
hard
to
near-exactly
replicate
by
complementing them with unique RF certificates of
authenticity (RF-CoAs) can prove a valuable tool against
counterfeiting.
This paper introduces a new robust RFID system with
enhanced
hardware-enabled
authentication
and
anticounterfeiting capabilities that relies on the near-field
RF effects between a 5 × 5 antenna array and the uniquely
modified substrate of the RF-CoAs.
A microcontroller-enabled, low-power, and low-cost reader
is used to accurately extract the near-field response (“RF
fingerprint”) of the certificates meant to complement
typical RFID tags in the 5-6-GHz frequency range.
The RF characterization of all the reader's components,
with an emphasis on the accuracy provided, has been
performed. The state diagram of the fast and accurate
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reader operation is outlined. Rigorous performance and
security test results are presented and verify the unique
features of this technology.
FIELD TRIALS AND PERFORMANCE MONITORING OF
DISTRIBUTED SOLAR PANELS USING A LOW COST
WIRELESS
SENSORS
NETWORK
FOR
DOMESTIC
APPLICATIONS
ABSTRACT
Use of solar panel is gaining an ever increasing foothold in
society, especially on the roof of the houses for feeding
domestic electrical appliances in recent times. In many
situations the expensive solar panels stop working due to
some external nuisances which goes unnoticed to the
users.
There is a need of a low-cost monitoring system to get
information of the defected solar panels for timely repair
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and maintenance. The design, development and trial work
of a performance monitoring system of distributed solar
panels along with automated data logging based on a lowcost wireless sensors network has been reported to help
the current situation.
The developed system can be used up to 146 V and 15.5A
solar cell systems with automatic selection of best
resolutions. The system can be extended for wide range of
solar cells for material research and development
activities. The fabricated system has been used for field
trials and very satisfactory results are obtained.
TORSIONAL-VIBRATION
ASSESSMENT
AND
GEARFAULTDIAGNOSIS IN RAILWAY TRACTION SYSTEM
ABSTRACT
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The diagnosis of mechanical faults in railway traction
systems (RTSs) has a significant importance on both
safety and reliability, which can avoid train crashes. This
paper deals with torsional-vibration assessment and gearfault diagnosis in the mechanical transmission of a highspeed RTS by a fully noninvasive technique.
Previous
studies
on
a
simple
gearbox-based
electromechanical system have shown that the influence
of gearbox torsional vibrations on the torque and on the
stator-current signatures are obvious.
The aim of this paper is to demonstrate that the traction
motor can be considered as a torque sensor through its
electromagnetic-torque estimation for torsional-vibration
monitoring without any extra mechanical sensor.
The effects of both tooth-damage and surface-wear faults
at the output wheel on the stator current and on the
estimated electromagnetic torque have been investigated.
The results of the estimation are compared with the
measured mechanical torque and validated through a
reduced-scale RTS in both stationary and nonstationary
conditions.
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DESIGN AND IMPLEMENTATION FOR AMBULANCE
ROUTE SEARCH BASED ON THE INTERNET OF THINGS
ABSTRACT
The internet of things (IoT) is a network to realize
interconnects between almost any object and web
services. It can be applied in many domains, such as radio
frequency
identification
(RFID),
wireless
sensor
network(WSN) and so on. The application of IoT brings us
the higher efficiency and the more convenient life.
In this paper, we propose a new IoT application framework
to search the optimal routes for the ambulances with
taking into account the effects for the traffic in the
ambulance running time. In this system, with the help of
the RFID tags in the ambulances and wireless sensor
nodes on the roads, the dispatch control center in the
hospital can collect the real-time traffic conditions where
wireless sensor nodes locates.
The report messages are sent to the control center by the
multi-hop method. Based on the information coming from
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sensor nodes, the control center forecasts the optical path
to provide the fastest route for the ambulances.
In this decision process, the control center will ignore
some information from the nodes, which have higher
traffic jam than the average. Experimental results show
that our system can provide the best route to the
ambulances. And it also has the more potential
applications in wide areas.
WEIGHING
SYSTEM
OF
GYROCAR BASED ON ARM
FRUIT-TRANSPORTATION
The pilot less fruit-transportation gyro car works in the
economic forest, avoiding the obstacle on the rail is the
prerequisite of its safe working. An ultrasonic obstacle
avoidance system of fruit-transportation gyro car based on
ARM embedded system is introduced in this article.
The functions of the system are implemented. It could
make the gyro car stop when detect an obstacle and sends
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the information of obstacle to the monitoring client
through GPRS. Through the test, the ultrasonic obstacle
avoidance system performs well and reliable.
VEHICLE INFRASTRUCTURE INTEGRATION SYSTEM
USING VISIONSENSORS TO PREVENT ACCIDENTS IN
TRAFFIC FLOW
ABSTRACT
This study describes the development of a vision sensor
for detecting shock waves which is one of the main factors
of accidents in highway traffic flow. The major
contributions of this research are development of vehicle
tracking and detection of shock wave in saturated traffic.
Moreover, realisation of a vehicle infrastructure integration
(VII) system for providing arrival information of such
propagation to drivers is proposed. The experiment on the
analysis of the propagation with the developed image
sensor has shown that an error might occur in the arrival
time information of the propagation provided to the driver.
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Therefore a prediction technique at the arrival time of the
propagation is integrated in the authors' system. By using
this prediction technique and taking the error tolerance of
drivers into account, the experimental results show that
prediction success rates are improved by about 5%.
LOCON: A LOCATION BASED SERVICES PLATFORM TO
IMPROVE AIRPORT SAFETY
ABSTRACT
Location and context awareness services have generated a
lot of interest in the recent years, becoming a key feature
to many applications of mobile devices. The rapid
development in wireless communications and in satellite
navigation systems also contributed to the popularity of
location based services.
The location technologies when properly combined can
provide valuable event driven services to notify users
about ongoing occurrences, creating important advances
in surveillance activities. This is particularly relevant for
operational environments where surveillance of surface
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movement's through electronic means represents a major
challenge. Although advantages in location based services
have opened up new perspectives at validating safety and
security requirements in environments such as airports,
harbours, or industrial plants, there are, however different
ways to look at these services to provide location
awareness.
This paper presents a contribution developed in an
European research project called LocON that implements a
generic platform to provide a set of location based
services using different wireless location technologies.
The location awareness provided by the LoCON platform
relies on multiple location-based technologies which
cooperate at providing the data to a middleware layer.
Based on a data fusion process the positioning data are
passed to the application layer enabling operational
decision makers to monitor and track events according to
business logic. LocON is being tested at Faro airport in
Portugal to validate how well it can improve airport safety
and security procedures.
PV POWER SYSTEM ENERGY CONTROL RESEARCH IN
MICRO GRID
ABSTRACT
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Micro-grid technology can integrate the advantages of
distributed generation power system, to provide users with
quality and reliable electricity.
This paper designs the photovoltaic system which is short
for PV based on the energy storage structure which not
only analyses the energy flow direction of the charging
and discharging circuit, but also designs the control
strategy of charging and discharging system in detail.
Through modeling and simulating by PSCAD platform,
micro-grid will strongly shows a good effect on improving
power quality.
CONTROL OF BRUSHLESS DC MOTOR WITH AN AVR
MICROCONTROLLER
ABSTRACT
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This paper illustrates the basic work principle of a
brushless DC motor and presents its control method.
According to the method, a control system of a brushless
DC Motor is designed using an AVR microcontroller.
Design of the control system includes hardware circuit
designing and software programming.
The hardware structure of the control system consists of a
microcontroller ATmega64, power supply circuit, position
detection circuit, current chopper circuit, power driving
circuit, display circuit and keyboard circuit and so on. The
software is developed by c program language.
The software includes main program, initialization
program, PWM duty ratio reload program, speed
calculation program, closed-loop PID regulation program,
interrupt service program, LCD display program, keyboard
program etc. The experiment result shows that the system
is with an excellent dynamic and static performance. Its
operation is reliable.
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A SCHEME FOR THE APPLICATION OF SMART MESSAGE
LANGUAGE IN A WIRELESS METER READING SYSTEM
ABSTRACT
In order to solve the problems of the communication
among various metering devices in the traditional wireless
meter reading system, Smart Message Language (SML)
which is the definition of the German national standard for
Automatic Meter Reading System is introduced.
In this paper, the Wireless Meter Reading system is
developed based on WI-FI, with the monitoring terminal of
the hardware platform made up of Marvell 88W8686, the
ARM7 processor and peripheral circuits, using ?C/OS-II
operating system and LwIP protocol. VC++ and MDB
database is used to develop a management software.
SML protocol is adopted to design the format of the data
frame to create a unified data structure for data
procurement. This system archives the function of reading
meter data from hardware, data processing and storage.
The experiment result proves that this type of data
structure improves the transmission efficiency and the
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performance of the system and is suitable
implementation in low-power embedded systems.
for
HARDWARE–SOFTWARE CODE SIGN OF AUTOMATIC
SPEECH RECOGNITION SYSTEM FOR EMBEDDED REALTIME APPLICATIONS
ABSTRACT
We present a hardware-software coprocessing speech
recognizer for real-time embedded applications. The
system consists of a standard microprocessor and a
hardware accelerator for Gaussian mixture model (GMM)
emission probability calculation implemented on a fieldprogrammable gate array. The GMM accelerator is
optimized for timing performance by exploiting data
parallelism.
In order to avoid large memory requirement, the
accelerator adopts a double buffering scheme for
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accessing the acoustic parameters with no assumption
made on the access pattern of these parameters.
Experiments on widely used benchmark data show that the
real-time factor of the proposed system is 0.62, which is
about three times faster than the pure software-based
baseline system, while the word accuracy rate is preserved
at 93.33%.
As a part of the recognizer, a new adaptive beam-pruning
algorithm is also proposed and implemented, which further
reduces the average real-time factor to 0.54 with the word
accuracy rate of 93.16%. The proposed speech recognizer
is suitable for integration in various types of voice
(speech)-controlled applications.
IMPLEMENTING ZIGBEE PROTOCOL AS ASSIGNMENTS IN
TEACHING EMBEDDED SYSTEMS
ABSTRACT
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In Computer Engineering 2b, one of the Level 7 courses in
the Bachelor of Engineering Technology programme
offered
at
Christchurch
Polytechnic
Institute
of
Technology, a “real world” project is always used as
assignments for teaching and assessment.
In the recent years, one of these assignments is to
implement the ZigBee protocol in the in-house developed
micro controller training kit.
Involving emerging technologies of the wireless sensor
control network in the assignment has stimulated
students' interest, not only in embedded systems but also
in other areas such as wireless communications.
DISCUSSIONS ON ACCESSIBILITY
AUTOMATION SYSTEMS
IN
INDUSTRIAL
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ABSTRACT
Importance of industrial automation systems [1], also
known as technical devices, has been a growing area
during the past decades. Web applications from one side
and industrial automation systems from the other side
have become a standard part of people's daily life and
more user groups have to deal with them.
Hence they must be accessible to all users. Unfortunately,
often by the development of such systems, certain user
groups are being neglected. Therefore, a systematic
concept is required to support the development of
industrial automation systems and Web applications.
In this paper, we will present the concept, which is
proposed in the context of a research project funded by
Deutsche Forschungsgemeinschaft (DFG)a. We will
discuss the suited methods to effectively assess
accessibility requirements.
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COMPARISON OF EMBEDDED SYSTEM DESIGN FOR
INDUSTRIAL APPLICATIONS
ABSTRACT
This paper presents a survey on embedded systems
design and applications. Several platforms for embedded
systems, including microcontrollers, microprocessors,
field-programmable gate arrays, digital signal processors,
and application-specific integrated circuits are discussed
and compared.
A
survey
of
embedded
system-based
industrial
applications is presented. Examples of real-life design
decisions specific to development of such systems are
also presented.
The carefully selected three design case study examples
include industrial control of wind tunnel with emphasis on
actuator control, a mobile robot navigation system with
emphasis on integration and synchronization of several
subsystems,
and
optimized
implementation
of
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computationally intensive control system on a small
microcontroller system.
DESIGN OF ON-LINE INTERACTIVE DATA ACQUISITION
AND CONTROL SYSTEM FOR EMBEDDED REAL TIME
APPLICATIONS
ABSTRACT
Design of on-line embedded web server is a challenging
part of many embedded and real time data acquisition and
control system applications. The World Wide Web is a
global system of interconnected computer networks that
use the standard Internet Protocol Suite (TCP/IP) to serve
billion of users worldwide and allows the user to interface
many real time embedded applications like data
acquisition, Industrial automations and safety measures
etc,.
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This paper approached towards the design and
development of on-line Interactive Data Acquisition and
Control System (IDACS) using ARM based embedded web
server. It can be a network, intelligent and digital
distributed control system. Single chip IDACS method
improves the processing capability of a system and
overcomes the problem of poor real time and reliability.
This system uses ARM9 Processor portability with Real
Time Linux operating system (RTLinux RTOS) it makes the
system more real time and handling various processes
based on multi tasking and reliable scheduling
mechanisms.
Web server application is ported into an ARM processor
using embedded `C' language. Web pages are written by
Hyper text markup language (HTML); it is beneficial for real
time IDACS, Mission critical applications, ATM networks
and more.
DATABASE DESIGN ON EMBEDDED HOME GATEWAY
AND WEB SERVER IMPLEMENTATION
ABSTRACT
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This paper analyzes database requirement of embedded
development and embedded Web server, combines with
the database design on embedded home gateway using
SQLite architecture, and implements the SQLite embedded
database on home gateway. Web server is successfully
ported, and embedded Linux operation system is ported to
home gateway platform.
A SYSTEM FOR THE DYNAMIC CONTROL AND THERMAL
CHARACTERIZATION OF ULTRA LOW POWER GAS
SENSORS
ABSTRACT
This paper describes a system for the simultaneous
dynamic control and thermal characterization of the
heating and cooling phases of an ultralow-power (ULP)
micromachined sensor, featuring thermal characteristics
that are quite similar to those of innovative ULP
semiconducting metal-oxide gas sensors.
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A pulsewidth-modulated (PWM) excitation system has
been realized using a microcontroller featuring an ARM7
core to characterize the thermal behavior of a device
formed by a Pt microheater and a Pt temperature sensor,
over an insulating membrane. Three operating modes, i.e.,
constant target heater resistance, constant heating power,
and cooling phase monitoring, were implemented.
Objectives of the research were to analyze the relation
between the time period and duty cycle of the PWM signal
and
the
operating
temperature
of
such
ULP
micromachined systems, to observe the thermal time
constants of the device during the heating and cooling
phases, and to measure the total thermal conductance.
Experiments indicated that an approximately constant
heater temperature in the constant target heater resistance
regime (i.e., after the initial thermal transient due to the
heating algorithm) can only be obtained if the time period
of the heating signal is smaller than 50 ?s, i.e., much faster
than the time constant of the device.
Constant power experiments show quantitatively a unique
time constant ? for both the heater and the temperature
sensor (T-sensor) in the heating phase (with a known
applied power) and the cooling phase (with zero power).
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This time constant decreases during heating in a range of
2.3-2 ms as a function of an increasing temperature rise ?T
between the ambient and the operating temperature.
Moreover, we observed that, in the chosen operating
temperature range, the thermal conductance is a linear
function of ?T. Finally, repeatability of experimental results
was assessed by guaranteeing that the standard deviation
of the controlled temperature was within ±5.5°C in worstcase conditions.
IMPLEMENTATION
OF
IN-VEHICLE
MULTI-SENSOR
INFORMATION FUSION GATEWAY FOR COOPERATIVE
DRIVING
Active safety is an important feature of a modern vehicle to
provide precaution warning or compensatory control
before the pre-crash stage of vehicle safety. All vehicle
signals and information are acquired by several in-vehicle
sensors on ECUs or surrounding vehicles, and integrated
in vehicle gateway through in-vehicle or vehicle-to-vehicle
communications.
The information exchanged among the host and
surrounding vehicles provides comprehensive vehicle and
driving status of each vehicle, so the driver can drive more
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safely with the cooperative driving mechanism. The
demonstration system consists of a vehicle gateway,
which is based on a heterogeneous multi-core processor,
consisting of one ARM core for I/O control and system
management and two DSP cores for intensive computation
of information fusion.
After reaching within the communication limit, the vehicles
set up time synchronization and then exchange vehicle
information. The acquired sensor data and received
vehicle information are time aligned and fed into PAC
DSPs for information fusion, which consists of four
phases, signal processing, location mapping, trajectory
prediction and risk assessment.
The risk assessment evaluates the probability of car crash
and broadcast the warning message to its surrounding
vehicles, if the risk level is raised beyond a threshold. The
cooperative driving is fulfilled by sharing the vehicle
information and emergency warning through wireless
communication, so a driver can be aware of the dangerous
situation and also be suggested an adequate response
earlier.
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THE RESEARCH ON OPTIMAL PARKING SPACE CHOICE
MODEL IN PARKING LOTS
ABSTRACT
In order to deal with the parking guidance issue of the
parking guidance and information system in the parking
lots, the behavior of choosing parking space was analyzed
to build the optimal parking space choice model in the
parking lots.
Based on the specific situation of the parking lots, the
habits and preferences of the drivers when parking their
cars were all taken into consideration in this model. After
summarizing the key factors which may influence drivers'
parking space choice, a multiple attribute decision parking
model is proposed to help PGIS in the parking lots choose
the optimal parking space for drivers.
A case is presented to verify the proposed model. The
results show that the model can choose the optimal
parking space and provide effective guidance for drivers. It
can also take the drivers less time to find the parking
space and it will take great help to the intelligent
management for the parking guidance and information
system, too.
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MONORAIL CAR’S WIRELESS CONTROL SYSTEM BASED
ON SMARTPHONE PLATFORM
ABSTRACT
To meet the mountainous districts situation in China, this
paper introduces a monorail car's wireless control system
used in orchard which is based on smart phone and GPRS
wireless communication technology.
The system can obtain monorail car's speed and position
information by rotary encoder, control and transmit data
by wireless communication.
A SMS module on Windows Mobile Embedded OS 6.1 is
developed based on GSM protocol system. Smart phone
can receive car's initial information and send orders to the
on-vehicle controller for operating the car by GSM
message.
It describes how the hardware platform works and how to
accomplish the design with software. Meanwhile, it tests
the data transmission time and makes improvement. The
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rational design makes it easier to operate, which is proved
to be available by tests.
MEASURING NEUROMUSCULAR CONTROL DYNAMICS
DURING CAR FOLLOWING WITH CONTINUOUS HAPTIC
FEEDBACK
ABSTRACT
In previous research, a driver support system that uses
continuous haptic feedback on the gas pedal to inform
drivers of the separation to the lead vehicle was
developed. Although haptic feedback has been previously
shown to be beneficial, the influence of the underlying
biomechanical properties of the driver on the effectiveness
of haptic feedback is largely unknown.
The goal of this paper is to experimentally determine the
biomechanical properties of the ankle–foot complex (i.e.,
the admittance) while performing a car-following task,
thereby separating driver responses to visual feedback
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from those to designed haptic feedback. An experiment
was conducted in a simplified fixed-base driving simulator,
where ten participants were instructed to follow a lead
vehicle, with and without the support of haptic feedback.
During the experiment, the lead vehicle velocity was
perturbed, and small stochastic torque perturbations were
applied to the pedal. Both perturbations were separated in
the frequency domain to allow the simultaneous estimation
of frequency response functions of both the car-following
control behavior and the biomechanical admittance. For
comparison to previous experiments, the admittance was
also estimated during three classical motion control tasks
(resist forces, relax, and give way to forces).
The main experimental hypotheses were that, first, the
haptic feedback would encourage drivers to adopt a “give
way to force task,” resulting in larger admittance
compared with other tasks and, second, drivers needed
less control effort to realize the same car-following
performance. Time- and frequency-domain analyses
provided evidence for both hypotheses.
The developed methodology allows quantification of the
range of admittances that a limb can adopt during vehicle
control or while performing a variety of motion control
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tasks. It thereby allows detailed computational driver
modeling and provides valuable information on how to
design an- - d evaluate continuous haptic feedback
systems.
MOBILE ROBOT FOR OVERHEAD
INSPECTION AND A CONTROLLING
OBSTACLE AVOIDANCE
POWER
METHOD
LINE
FOR
ABSTRACT
This paper designs a mobile robot for overhead powerline
inspection and a controlling method for obstacle
avoidance, which is composed of three suspender arm
with the three-coordinate rolling wheel machine, threenode CAN bus system and wireless image transmission
with CCD.
The suspender arm includes the straight line synchrostrap rail bar for mobile in breadth, the gear-rack machine
for moving horizontally, the synchro-strap rail bar for
moving vertically and the driving machine with a rolling
wheel.
Every suspender arm can move in three right-angle
coordinate direction through the motor with a
photoelectric coder,in which the sensors are built for the
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purpose of detecting the obstacles such as the quakeproof
bar, line clamp and down-lead etc.
The controlling system can realizes the whole robot
machine rolls along the powerline in a long distance and
avoids obstacles automatically by driving relevant motor
for suspender arm's three-coordinate moving based for
program after analyzing the inputting sensors' signal
including the sensors for detecting the obstacles and
photoelectric coders.
THE
IMPLEMENTATION
OF
THE
INTELLIGENT
TRANSPORT SYSTEM FOR THE REAL-TIME ROADSIDE
ENVIRONMENT INFORMATION TRANSFER
ABSTRACT
The paper proposed a novel system “RTCS (Real-Time
Control System for road environment)” to prevent
accidents of drivers. This paper deployed sensors on
roads and used these sensors to collect information to
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coordinators. How to use sensors to prevent accidents in
vehicular environment is an interesting issue.
Vehicles are equipped with OBU (On-Board Unit) and use
the OBU to query information if the coordinator or RSU
(Road-Side Unit) is located in its communication range.
This system also distributed events into different priority
due to the different damages.
For your example, RSU collects and analyzes the roadside
information for the driver's safety and which provides to
an OBU and a management system according to the
service priority. In the higher rank terminal, the developed
IP-based set-top box application provides information
such as the traffic information, road environmental
information, environmental sensor station error, and etc.
The system has a high potential to improve traffic in two
ways. First, it collects local environmental data and passes
it to a central facility to further process it and pass it to
vehicles. Second, it takes care that urgent local
information is passed directly and thus quickly to local
vehicles which increases traffic safety.
The paper presents architecture to connect a USN
(Ubiquitous Sensor Network) with the ITS (Intelligent
Transport System) consisting of connected OBU and RSU.
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The goal of the system is to provide the ITS with local
environmental data gathered by the USN nodes.
REAL TIME PADDY CROP FIELD MONITORING USING
ZIGBEE NETWORK
ABSTRACT
Sensors are the essential device for precision agricultural
applications. In this paper we have detailed about how to
utilize the sensors in paddy crop field area and explained
about Wireless Sensor Network (WSN), Zigbee network,
Protocol stack, zigbee Applications and the results are
given,
when
implemented
the
zigbee
network
experimentally in real time environment. T
his paper proposed idea about monitoring the crop field
area without human interaction. The fundamental concept
of this paper is to provide a highly enabled monitoring of
crop field. This paper is focus on the sensing and
monitoring of the crop field and gives various sensing
analyzes in the paddy crop field.
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A ZERO CONFIGURED HOMECARE
GATEWAY USING ZIGBEE
ABSTRACT
This paper presents a zero configuration HomeCare
gateway which enables the remote patient monitoring.
The proposed solution facilitates the automatic service
discovery from ZigBee medical sensor network and also
the doctor could adjust the monitoring configuration by
uploading a new service profile to telemedical platform.
It is believe that the proposed solution could achieve winwin situation for both patient and doctor.
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A PRAGMATIC APPROACH TO AID VISUALLY IMPAIRED
PEOPLE
IN
READING,
VISUALIZING
AND
UNDERSTANDING TEXTUAL CONTENTS WITH AN
AUTOMATIC ELECTRONIC PEN
ABSTRACT
Blindness is an obstacle that is not even comprehendible
for the non-blind. Many day-to-day activities may become
challenging, complicated and may require much more
labor for those with eye-sight problems or blindness.
One of the major problems they face is understanding
visual or text information which are not in the Braille form.
Not every written or printed document that a blind person
would like to read is available in Braille. A blind cannot
read any of the handwritten documents. They feel it very
difficult, while someone has to read it for them. This is the
fundamental issue that we deal with, and try to solve, with
a new piece of technology, which is essentially an
automated text-to-audio converting pen.
According to this keynote concept, any piece of text that a
person would like to read/understand is converted to an
audio signal. This audio signal is transmitted to the
person's ears through wireless technology such as
ZigBee.
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Since this technology is in the form of a pen, it is very
convenient to use and is also portable. This instrument is
radical and can definitely be a empowering force in a blind
person's life, and can be helpful in relieving them of their
frustration of not being able to read whatever they want,
thus making their life easier.
EVIDENCE COLLECTION FROM CAR BLACK BOXES
USING SMART PHONES
ABSTRACT
This demonstration shows a process to collect critical
video clips from car black boxes using smart phones.
Critical video clips in the black box are hashed to provide
data integrity before being transmitted to the police server.
Without VANET infrastructure, smart phones are very
useful communication media for car black boxes.
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DESIGN OF ULTRASONIC OBSTACLE AVOIDANCE
SYSTEM OF FRUIT-TRANSPORTATION GYRO-CAR BASED
ON ARM
ABSTRACT
The pilotless fruit-transportation gyrocar works in the
economic forest, avoiding the obstacle on the rail is the
prerequisite of its safe working. An ultrasonic obstacle
avoidance system of fruit-transportation gyrocar based on
ARM embedded system is introduced in this article.
The functions of the system are implemented. It could
make the gyrocar stop when detect an obstacle and sends
the information of obstacle to the monitoring client
through GPRS. Through the test, the ultrasonic obstacle
avoidance system performs well and reliable.
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INTELLIGENCE MONITORING SYSTEM BASED ON ARM
AND INFORMATION FUSION
ABSTRACT
Since some of the ARM not directly connected with the
Internet system. A kind intelligence monitoring system
based on 32 bit ARM processor LPC2138 and information
fusion technology was provided.
ARM has advantages of high integration and powerful
information processing capability. The system is
composed of LPC2138 processor, external RAM, Flash,
LCD and With DM9000A interface chip for system
configuration network communication interface. Its OS is
embedded in Linux operating system
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DESIGNING A PH DATA ACQUISITION & LOGGING DEVICE
USING AN INEXPENSIVE MICROCONTROLLER
ABSTRACT
Accurate measurement and analysis of pH data is required
for a multitude of applications ranging from the
agricultural sector to clinical laboratories. In many of these
applications an inexpensive hand-held unit is needed.
This paper describes a low cost and low power pH sensing
and data logging system using a Renesas microcontroller
and pH sensor.
This paper describes the sensor data acquisition and data
logging system including details of its construction,
capabilities and applications.
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SMART CARD WITH IRIS RECOGNITION
SECURITY ACCESS ENVIRONMENT
FOR
HIGH
ABSTRACT
Smart cards are increasingly being used as a form of
identification and authentication. One inherent problem
with smart cards, however, is the possibility of loss or
theft. Current options for securing smart cards against
unauthorized use are primarily restricted to passwords.
Passwords are easy enough for others to steal so that they
do not offer sufficient protection.
This has promoted interest in biometric identification
methods, including iris recognition. The iris is, due to its
unique biological properties, exceptionally suited for
identification. It is protected from the environment, stable
over time, unique in shape and contains a high amount of
discriminating information.
This paper proposes a method to integrate iris recognition
with the smart card to develop a high security access
environment. An iris recognition system and smart card
programming circuit with its software have been designed.
Template on card (TOC) category has been employed.
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Hence, the extracted iris features stored in smart card are
compared against the data acquired from a camera or
database for authentication. The proposed algorithm has
superior performance in terms of security, accuracy and
consistency compared with other published technology.
DESIGN OF A WIRELESS MEDICAL MONITORING SYSTEM
ABSTRACT
This paper provides the design of a Medical Monitoring
Terminal use C8051F021 MCU and CC2420 RF chip based
on Zigbee technology. The Monitoring Terminal can detect
the patient's real-time body temperature, heart rate and
other physiological informations, and transmit them to the
control center.
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SYSTEM LEVEL DESIGN OF A SECURE HEALTHCARE
SMART CARD SYSTEM
ABSTRACT
Smart card-based healthcare system has several
advantages over conventional paper-based systems in
terms of security, privacy and portability. In this study, a
secure health care smart card system was designed and
simulated.
The goal of the project is to design a smart card system
which will meet the major requirements of a healthcare
identity system. Main features of the proposed system are
data storage and secure data transfer. The system is a
heterogeneous system with hardware and software
components and it was designed using electronic systemlevel design methodology (ESL) with a top-down approach.
It consists of cryptographic primitives, a central
processing unit and memory blocks. RSA and AES are
used for key share and encryption, respectively. An LFSR
is employed to generate pseudo-random numbers which
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are used for calculating keys. We have used Aldec ActiveHDL Student Edition to develop the system and perform
mixed-language simulations. We have functionally verified
the system using Active-HDL.
COMPUTING TECHNOLOGY USED IN RETRIEVAL OF
PATIENT’S RECORD
ABSTRACT
The majority of healthcare workers in hospitals continue to
record, access and update important patient information
using paper charts. Disparate patient data (clinical
information, laboratory results and medical imagery) is
entered by different caregivers and stored at different
locations around the hospital.
This is a cumbersome, time consuming process that can
result in critical medical errors such as documents being
mislaid or prescriptions being misinterpreted due to
illegible handwriting. Hospitals everywhere are moving to
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integrate health data sources using Electronic Health
Record (EHR) systems as well as taking advantage of the
flexibility and speed of wireless computing to improve the
quality and reduce the cost of healthcare. We are
developing a mobile application that allows doctors to
efficiently access accurate real-time patient information at
the point-of-care.
The system can assist caregivers in automatically
searching through very large repositories of previous
patient cases as increasingly large hospital databases are
making manual searches of such information unfeasible.
The system performs computational prognosis by
providing decision support for pre-screening of medical
diagnosis.
A presenting patient's symptoms can be input to a
portable device and the application can quickly retrieve the
most similar profiles with known diagnoses from large
databases which can be used to compare treatments,
diagnosis, test results and other information.
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BLIND CONSTELLATION ESTIMATION AND DETECTION
USING CLUSTER ANALYSIS
ABSTRACT
This paper presents a blind soft-output modulation
decoder for signals transmitted wirelessly using any
constellation configuration.
The receiver algorithm operates by classifying the
received symbols into probabilistically alike clusters which
are ultimately used to estimate the underlying modulation
constellation points and also soft information about the
received signal.
THE DESIGN AND IMPLEMENTATION OF A TEACHERSTUDENT INTERACTION SYSTEM BASED ON ZIGBEE AND
RFID
ABSTRACT
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Based on analysis of features of ZigBee Wireless sensor
networks and RFID technology, we implemented a protocol
stack of ZigBee using method of module dividing.
From the perspective of improving teaching methods,
combining
teaching
practices,
a
teacher-student
interaction system based on ZigBee and RFID technology
was designed and implemented for the application of
actual teaching.
Results show that the system achieved the basic functions
of a teacher-student interaction system.
THE SOLUTION OF HYBRID ELECTRIC VEHICLE
INFORMATION SYSTEM BY MODBUS PROTOCOL
ABSTRACT
This paper introduces the hybrid electric vehicle
information system, which is realized by modbus protocol.
Using a remote terminal control unit (RTU) with EVEW
touch-screen, the system achieves the communication
between electronic control units (ECU) and the RTU by
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means of the modbus protocol at the baud rate 38400kb/s,
and it finishes the task of human-machine exchange.
Hybrid electric vehicle control unit uses dual-core
processors: the host processor and the coprocessor
XGATE.
XGATE can reduce the load on the host processor, which
makes the host processor timely response to a number of
hybrid control tasks, and it improves the requirements of
real-time in hybrid control system.
In addition, because modbus protocol has opening
characteristics, most of serial communication controllers
support the protocol. Therefore, the system can be applied
in the serial communication with modbus protocol.
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HYBRID WIRELESS COMMUNICATION SYSTEM USING
ZIGBEE AND WIFI TECHNOLOGY IN THE COALMINE
TUNNELS
ABSTRACT
Wireless Sensor Network (WSN) used under the coalmine
tunnel is an emerging area of research that promises to
provide reliable and flexible communication. This paper
first discussed the best working frequency about the WSN
in coalmine.
Then, according to the actual circumstances of coal mine,
the network structure should adopt cluster-tree topology.
We also develop a multifunction communication wireless
system using ZigBee and WiFi technology, which can
achieve the functions of gas monitoring, wireless
communication, personnel management and video
surveillance, etc.
Practical applications showed that the multifunction
communication system can satisfy the need of dispatch
communication and safety monitor in the coal mine tunnel.
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DEVELOPMENT OF
SENSOR NETWORK
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ROAD
LIGHT
GATEWAY
WITH
ABSTRACT
In this paper, we have developed the gateway for multiinformation convergence system in ubiquitous sensor
network. The gateway gathers the various sensor data
from a road light device, and the data is transmitted into
an energy management system.
The sorts of data are the intensity of illumination, humidity
and diagnostic results.
DESIGN OF MONITOR-AND-CONTROL SYSTEM
SUPERMARKET FRESH AREA BASED ON ZIGBEE
FOR
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ABSTRACT
According to the status that most of supermarkets can't
effectively monitor the temperature and humidity around
food of fresh area in our country Currently, the thesis
designs a hierarchical topology central monitoring system
based on ZigBee wireless sensor network (WSN). In the
system, the temperature and humidity of surveyed area
can be automatically monitored and controlled.
The monitoring nodes, with the CC2430 chip and THS11,
can collect and upload temperature and humidity data to
the Management Centre, which displays and processes the
data, through the central node and the RS-232 interface. If
the collected data exceeds the threshold, it automatically
starts the alarm system and the regulating system; while
the data is lower than the standard value, regulating
system could be automatically shut down. Nodes work in
the regular query power saving mode.
Power is obtained from button cells conversion through
MAX687. The results reveal that this WSN system has the
potential for field applications due to its low cost, low
power and flexible networking construction.
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VOICE OVER ZIGBEE NETWORKS WITH ENVIRONMENTAL
MONITORING
ABSTRACT
ZigBee technology is being embedded in a range of
applications up to smart energy, healthcare, and
telecommunication services. In this paper, we present a
voice transmission system, one of telecommunication
value-added services, based on the low-rate ZigBee
networks.
We design a model to perform a sensor role as a member
of ZigBee networks in addition to providing the costeffective voice transmission function.
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HIGH-VOLTAGE PULSE POWER SUPPLY CONTROLLER
BASED ON ARM7
ABSTRACT
High-voltage pulse power supply technology is a new
effective improvement in electric dust precipitation. A
High-voltage pulse power supply controller based on
ARM7 is present in this paper. Which can output pulse
width modulation in frequency of 20~50 KHz with the duty
cycle of 12% to 50%. ?C/OS- operation system was
applied.
The implementation of hardware and operation system is
introduced. Experiments have shown the feasibility and
reliability.
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A TEST BED FOR ANALYZING SECURITY OF SCADA
CONTROL SYSTEMS (TASSCS)
ABSTRACT
The critical infrastructures of our society are in the
process of being modernized. Most significantly impacted
are the industrial control systems through replacement of
old electromechanical systems with advanced computing
and communication technologies. This modernization has
introduced new vulnerabilities to those infrastructures.
Securing critical infrastructures is a challenging research
problem, as these control systems were not designed with
security in mind. This paper presents a testbed designed
to study and simulate the various available techniques for
securing and protecting Supervisory Control and Data
Acquisition (SCADA) systems against a wide range of
cyber attacks.
The testbed is also used to evaluate the detection rate,
false alerts and effectiveness of the protection techniques.
We present preliminary results on using the testbed to
detect a selected set of cyber attacks and the impact of the
protection techniques on the operations of the system.
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SUPPORT
VECTOR
CLASSIFICATION FOR
THEFT
IEEE PROJECTS 201011-12
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MACHINE
DETECTION
BASED
DATA
OF ELECTRICITY
ABSTRACT
Most utility companies in developing countries are
subjected to major financial losses because of nontechnical losses (NTL). It is very difficult to detect and
control potential causes of NTL in developing countries
due to the poor infrastructure. Electricity theft and billing
irregularities form the main portion of NTL.
These losses affect quality of supply, electrical load on the
generating station and tariffs imposed on electricity
consumed by genuine customers. In light of these issues,
this paper discusses the problems underlying detection of
electricity theft, previously implemented ways for reducing
theft.
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In addition, it presents the approximate energy
consumption patterns of several customers involving
theft. Energy consumption patterns of customers are
compared with and without the presence of theft. A dataset
of customer energy consumption pattern is developed
based on the historical data.
Then, support vector machines (SVMs) are trained with the
data collected from smart meters, that represents all
possible forms of theft and are tested on several
customers. This data is classified based on rules and the
suspicious energy consumption profiles are grouped. The
classification results of electricity consumption data are
also presented.
ENERGY
DIVERSIFICATION
ECONOMY GROWTH
AND
SUSTAINABLE
ABSTRACT
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Energy diversification is very important to the sustainable
economy growth. In this paper we develop an endogenous
growth model and analyze some major relationship
between the energy diversification and sustainable
economy growth.
The dynamic optimization results of the model show that
the technology progress will make great contributions to
the energy diversification and the specialized energy R&D
plays an important role in the energy diversification
process, which can accelerates energy supply source
expansion.
Propelled by the specialized energy R&D, energy
diversification will redistribute the labor force among
different sectors, offset the adverse effects of diminishing
marginal return of factors, and help economy step into
sustainable growth e entually.
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DEVELOPING AND INSTALLING SUBSTATIONS FOR OIL
AND GAS FACILITIES IN VERY COLD AND REMOTE
LOCATIONS
ABSTRACT
Oil and gas companies are venturing into colder, more
remote locations in their search for attainable oil and gas
reserves. In many instances, extracting these “harder to
reach” reserves requires power intensive unconventional
methods. Heaters, drill rigs, compressors, pumps, and
other exploration and production equipment required for
the exploration and production operations can amount to
hundreds of megawatts.
To supply these large loads, oil and gas companies are
using electric power at higher voltage levels and installing
their own transmission and distribution substations and,
in some cases, their own transmission and distribution
network. Historically, substation designs were based on
previous engineering experience and knowledge. Given
the challenges associated with frontier extreme weather
locations, defaulting to traditional designs may be a flawed
approach.
This paper discusses different aspects to consider in the
development and installation of remote high-voltage
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substations in very cold conditions, with emphasis on a
few key criteria: personnel safety and environmental
issues, reliability and availability, low maintenance, remote
monitoring and control, equipment and material suitable
for cold environment, and cost effectiveness.
Other
considerations
such
as
unique
end-user
requirements,
qualified
labor
resources,
logistics
challenges, and cost optimization will also be discussed. A
methodology incorporating the aforementioned factors will
be offered for selecting a substation solution for a large oil
and gas facility in a cold and remote location.
CONTROL LAYER FOR MULTI-VENDOR INDUSTRIAL
ROBOT INTERACTION PROVIDING INTEGRATION OF
SUPERVISORY
PROCESS
CONTROL
AND
MULTIFUNCTIONAL CONTROL UNITS
ABSTRACT
Based on recent industrial needs for a flexible integration
of supervisory control systems and novel intuitive manual
control units a new control layer is introduced. The control
layer affords adaptive behaviour in terms of process and
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motion planning as well as flexible manual control of
arbitrary robot controllers. It is located between the
industrial robot controller and the control units.
For the purpose of a flexible manufacturer-independent
access to the robot controller we define an object-oriented
programming interface. The set of robot commands is
manufacturer-independent and includes all basic robot
functions regarding motion and program control.
An inherent capability of the control layer is the
transformation of neutral object-oriented robot commands
to manufacturer-specific robot languages. With an
emphasis on the development of a flexible control layer,
we aim for a media-independent communication solution.
In order to cover a broad range of robotic applications,
different
communication
standards
of
industrial
automation are implemented. Finally, two applications, a
smartphone robot control and a distributed robot control
system, are presented and discussed.
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EVALUATION
OF
TELE-ROBOTIC
INTERFACE
COMPONENTS FOR TEACHING ROBOT OPERATION
ABSTRACT
Remote-learning has been an increasingly growing field in
the last two decades. The Internet development, as well as
the increase in PC's capabilities and bandwidth capacity,
has made remote-learning through the internet a
convenient learning preference, leading to a variety of new
interfaces and methods.
In this work, we consider a remote-learning interface,
developed in a Computer-Integrated-Manufacturing (CIM)
Laboratory, and evaluate the contribution of different
interface components to the overall performance and
learning ability of end users. The evaluated components
are the control method of the robotic arm and the use of a
three-dimensional simulation tool before and during the
execution of a robotic-task.
An experiment is designed and executed, comparing
alternative interface designs for remote-learning of
robotic-operation. A Teleoperation task was given to 120
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engineering students through five semesters. The number
of steps required for completing the task, the number of
errors during the execution and the improvement rate
during the execution were measured and analyzed.
The results provide guidelines for a better design of an
interface for remote-learning of robotic-operation. The
main contribution of this paper is in the introduction of a
new teaching tool for laboratories and the supplied
guidelines for an efficient design of such tools.
THE FLEXIBLE BUS SYSTEMS USING ZIGBEE AS A
COMMUNICATION MEDIUM
ABSTRACT
This paper describes a research on The Flexible Bus
Systems (FBS) using Zigbee as a communication medium.
The Flexible Bus System is a demand responsive transit
(DRT) but it is more efficient and convenient in a sense
that it entertains passenger's demands and gives bus
locations in real time.
The real time synchronization of The Flexible Bus System
makes it information rich and unique as compared to other
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DRTs. The Flexible Bus Systems is a system that can
replace the Traditional Bus Systems with its flexibility and
efficiency.
This paper discusses the use of wireless technologies in
The Flexible Bus Systems and how to make it more reliable
using short range wireless technology Zigbee.
A NEW INTELLIGENT CONTROL TERMINAL OF SOLAR
STREET LIGHT
ABSTRACT
The new intelligent control terminal of solar street light
was carried out in this paper. It combines of current
general street light charge and discharge management
controller and wireless communication technology. It
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employs fuzzy control theory to control the uncertain
system to achieve reasonable battery charge or discharge.
The terminal has the feature of running on the network and
off the network independently, so it ensures the stability of
the system.
A ZIGBEE-BASED TELECARDIOLOGY SYSTEM
REMOTE HEALTHCARE SERVICE DELIVERY
FOR
ABSTRACT
Patients with heart disease suffer much to have diagnostic
ECG sessions especially in rural areas and areas with high
population. This is mainly due to the remoteness of
distance between patients and the medical units, as well
as traffic congestion. Doctors also need a fast and reliable
way to be able to check on their patients and provide a
diagnosis irrespective of where they are.
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In this paper we describe the design and implementation
of a telecardiology system using ZigBee. Our proposed
system will provide doctors with the ability to monitor, and
diagnose their patients remotely over the Internet. The
system is capable of receiving a serial stream of data and
extracting relevant packets from the measurements of the
patient's vital signs.
The implemented software allows patients to easily
connect with their doctors and to send their data via
Internet. The ECG signal is monitored in a real-time mode
with the ability of keeping records through SCP-ECG
(Standard Communication Protocol) standard.
A PARKING GUIDANCE AND INFORMATION SYSTEM
BASED ON WIRELESS SENSOR NETWORK
ABSTRACT
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This paper introduces a parking guidance and information
system based on wireless sensor system. This system
consists of parking space monitoring nodes, routing
nodes, sink node, parking guidance display and an
information and management center.
The nodes transmit the information through wireless
sensor network by tree-like topological structure with nonstandard protocol we developed. After analyzing and
processing the data, the information and management
center would distribute the parking information by LED
screen and displays for the drivers. And the results of the
experiment show that the performance of the system can
satisfy the requirements of parking guidance.
MULTIFEATURED VISUALIZATION AND NAVIGATION IN
TELE-OPERATION OF MOBILE ROBOTS
ABSTRACT
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Recently, the expectation to tele-operated mobile robots
has been increasing much in order to perform the
monitoring in various scenes. However, there are many
critical problems in tele-operated system.
Especially, we must improve the restriction of visual
range, the usability of human interface, and intention
sharing with the operator. In this paper, we discuss the
monitoring system of a tele-operated robot and human
interface based on visual information and distance
information from the tele-operated mobile robots.
Next, we propose a method of a navigation system based
on multi-featured visualization. Finally, we propose a teleoperated system using iPhone, and show several
experimental results of the proposed method.
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