Speeder X1 and X2
Laser Radar
Configuration and API Guide
____________________________________________________________________________________
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 2/36
____________________________________________________________________________________
Contact information
Noptel Oy
Address:
Tel.:
Fax:
E-mail:
Technical support:
Teknologiantie 2
FI-90590 Oulu
Finland
+358 40 181 4351
+358 8 556 4101
[email protected]
see our Web site: www.noptel.fi
Downloads:
Documents :
http://www.noptel.fi/eng/nms/index.php?doc=7_downloads/5_manuals&group=MSC
Software:
http://www.noptel.fi/eng/nms/index.php?doc=7_downloads/7_software&group=MSC
Firmware:
Ask from [email protected]
Document Information :
Document Title:
Document Version:
Released:
Current printing
Document ID :
Document Status:
Firmware version CM5:
Speeder X1 and X2 Configuration and API Guide
1.4
(25.04.2014)
25.4.2014
N42272AE
Release
5.00.45 (CMS5)
Copyright Notice:
Specifications and implementation are subject to change without notice due to continuous
research and development.
Copyright © 2013 Noptel Oy, Oulu, Finland
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 3/36
____________________________________________________________________________________
1
INTRODUCTION TO THE FAST RANGEFINDERS ............................................................... 5
1.1
1.2
1.3
2
INTRODUCTION ............................................................................................. 5
COMMUNICATION PROTOCOL ......................................................................... 5
COMMANDS IN CONFIGURATION MODE ........................................................... 6
OPERATION MODES .............................................................................................................. 9
2.1
2.2
3
LIST OF OPERATION MODES ........................................................................... 9
OUTPUT AT STARTING OF THE OPERATION MODE ........................................... 10
DISTANCE MEASUREMENTS ............................................................................................. 11
3.1 ASCII MODE.............................................................................................. 11
3.1.1 ASCII format of the distance measurement ......................................... 11
4
SPEED MEASUREMENTS ................................................................................................... 13
4.1 SPEED MEASUREMENT MODE FOR VERTICAL INSTALLATION ............................ 13
4.1.1 Speed calculation method ................................................................... 17
4.1.2 Delayed trigger in speed measurement ............................................... 17
4.2 MULTILANE SPEED MEASUREMENT MODE ...................................................... 19
4.3 AUTOMATIC SETTING OF THE MEASUREMENT WINDOW ................................... 22
4.3.1 Vertical setup ....................................................................................... 22
4.3.2 Horizontal setup ................................................................................... 23
5
DETECTION MODES ............................................................................................................ 24
5.1 TRIGGER WINDOW MODE ............................................................................. 24
5.1.1 In window and Out of window triggering .............................................. 25
5.1.2 Trigger count and timing information ................................................... 26
6
PARAMETERS ...................................................................................................................... 27
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
USER PARAMETER COMMANDS .................................................................... 27
PERMANENT MEMORY PARAMETERS ............................................................. 29
PARAMETER LIST ........................................................................................ 29
CONTROL BYTE 1 ....................................................................................... 33
CONTROL BYTE 2 ....................................................................................... 33
CONTROL BYTE 3 ....................................................................................... 34
CONTROL BYTE 4 ....................................................................................... 34
CONTROL BYTE 5 ....................................................................................... 35
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 4/36
____________________________________________________________________________________
1 INTRODUCTION TO THE FAST RANGEFINDERS
1.1 Introduction
This document presents Configuration and Application programming interface (API) for
Speeder X1 and X2 Laser Radars which are based on Noptel’s fast rangefinder
technology. Connections and hardware of the sensors is presented in ”CM5 Technical
manual”.
Speeder is designed for Speed measurement but it is also suitable for Distance
Measurement and Target Detection. Versatile utilization of sensors leads to diverse
Configuration and Parameterization. The document is intended as facilitate the work.
1.2 Communication protocol
Baud rates:
The sensors operate connected to the RS-232 or RS-422 port, using baud rates of 1200
to 921600 bd.
The bit stream of serial port consists of:
Data bits
Parity
Stop bit
Flow Control
8
None
1
None
The main commands of the sensor are described in this chapter. The default baud rate is
9600. If the baud rate is not known, the user can reset the baud rate to 9600 by sending
multiple <esc>’s to the serial port, while connecting power on to the sensor.
The ASCII command protocol is in the form:
<esc>[Device Number]<Command><Value1>,<Value2><cr>
Where
<esc>
ASCII code 27
[Device Number]
is an option, 1–9 if two or more sensors are connected to a serial port,
Command
is a command according to the Chapter 1.3,
<Value1> and <Value2>are parameter No. and values in ASCII format (if needed), and
<cr>
is Carriage Return (ASCII code 13).
The controller must be in Configuration Mode (par. #1 = 0) when giving commands. The
character <esc> is used for returning the sensor to base state.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 5/36
____________________________________________________________________________________
<esc> has three basic functions:
1. Precedes every command.
2. Deletes wrong command.
3. Returns the Sensor into Configuration Mode.
Echo mode:
The system has two communication modes: echo and no echo. In echo mode the
commands and numbers will be echoed back to allow easier operation with terminal
software. Characters prior <esc> are not echoed. In no-echo mode no characters or
numbers are echoed. The echo mode can be defined by Commands [i], echo OFF and
[I], echo ON. These commands will assign bit 1 of Control Byte 2 respectively.
Start-up:
The sensor starts to operate always in the mode according to parameters in the
permanent parameter memory. Parameters are changeable, but before saving
parameters into the permanent memory, user should always test the proper function of
the sensor.
1.3 Commands in Configuration mode
The commands in Configuration mode are as follows:
Command
c
C
Description
Measure distance once
Measure distance continuously, until next <esc>
d
G
H<Value>
Return error list of the Sensor
Reset the Sensor
Return <Value> count of distance measurement
results (in ASCII format, average parameter used)
i
Set serial port echo OFF
I
Set serial port echo ON (Capital I)
J<0/1>
1 = Continuous laser pulsing ON
0 = Laser pulsing OFF
During laser pulsing trigger output will toggle with each
pulse. Feature can be used to check the accuracy of
the system time base. The pulse rate is defined by
parameters 4 and 5 (See chapter 6.3)
Read the used value of the parameter No.
Read all used parameters
L<No.>
L
LW<No.>
M
M<No.>
Read word (16 bits) parameter from location No. and
No.+1
Use the set measurement mode as defined in
parameter 1.
Use measurement mode No.
Answer
Dxxxxx [aaaaa] 1)
Dxxxxx [aaaaa] 1)
Dxxxxx [aaaaa] ....
2)
Error table
3)
GOK
HDxxxxx aaaaa 1)
Dxxxxx aaaaa ....
ERRCNT=y
ECHO OFF
IOK
ECHO ON
IOK
1
0
Lxxxxx
L0001 xxxxx
L0002 xxxxx
….
Lxxxxx
MOK
MOK
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 6/36
____________________________________________________________________________________
O<0/1>
P<No.>
S
v (lower case)
V (upper case)
V1
V2
0 = pointer OFF, 1 = pointer ON
Read the value in EPROM of the parameter No.
Save user parameters to permanent memory
(X must be used before)
Write <Value> to the parameter <No.> (ram)
Write integer <Value> (0-65535) to parameter <No.>
and <No.>+1
Sensor information in the Noptel internal format
Sensor information in ASCII format (version)
Read voltage, current and temperature measurements
Perform self-test and show its result
X
Enable writing to permanent memory
T<No.>,<Value>
TW<No.>,<Value
OOK
Pxxxxx
SOK
TOK
TOK
Sensor information 4)
5)
Table
OK or
Explanation of the
error and ERR:xxxxx
WR ENABLE
Commonly used commands in configuring the sensor for applications are light blue.
The end of the line of answer is always <cr><lf>.
1)
Distance measurement commands
Commands c and C, return results according to Chapter 3.1.
With command H it’s the same except Amplitude Output Enable does not have an effect
but amplitude is given in any case.
2)
Error table (example) (table is for diagnostic purposes only and it is updated
during every power-up of the sensor)
Code
0001
0002
0004
0008
0010
0020
0040
0080
0100
0200
0400
0800
1000
2000
4000
8000
OK
Error
EEPROM R/W
TDC datardy
RX Error
TDC main counter
TDC interpolator
Low battery
Supply voltage!
Invalid value
Unknown command
TDC interp zero
EEPROM/FLASH:CRC?
Voltage error!
APD voltage!
Temperature!
Power consumption!
HV error!
Error count
:
0
:
0
:
0
:
0
:
0
:
0
:
0
:
0
:
0
:
0
:
0
:
0
:
0
:
0
:
0
:
0
Some errors may occur in certain conditions, like too low supply voltage or too high/low
operating temperature. If the operation of the sensor returns to normal and errors do not
keep increasing, it is safe to continue using the sensor. Otherwise contact Noptel Oy for
further information.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 7/36
____________________________________________________________________________________
3)
Sensor information at Power-up and after Resetting
9600
(Baud Rate)
EEPROM PARAMS RESTORED
SPEEDER X1
CMS5012242,RS232
Noptel Oy
ParamDate:2012.04.20
Version :5.00.50 BAF3h
SW Date :Dec 14 2012
SW time :12:51:12
Ubat :10.3 V
READY!
4)
Sensor information <esc>V<cr>
An example of answer for command V:
SPEEDER X1
CMS5012242,RS232
Noptel Oy
ParamDate:2012.04.20
Version :5.00.50 BAF3h
SW Date :Dec 14 2012
SW time :12:51:12
Ubat :11.4 V
OK
The order of lines varies according to the firmware version of the Sensor.
5)
Voltage, current and temperature table (table is for diagnostic purposes only)
An example of answer for command V1 is presented below (units are added):
Description
APD :02212
RX temp
RX Anaout
Current
VDD
VAN
VTDC
CP temp
UBAT
UDCDC
VRX
VOSC
VTX
VCP
TXHV
TX temp
OK
Value Unit (Not in output)
[0.1V]
:03222
[0.01°C]
:0156
[mV]
:00201
[mA]
:05068
[mV]
:02960
[mV]
:04845
[mV]
:02540
[°C]
:10293
[mV]
:0548
[mV]
:05161
[mV]
:05022
[mV]
:05138
[mV]
:03348
[mV]
:00257
[V]
:02311
[0.01°C]
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 8/36
____________________________________________________________________________________
2 OPERATION MODES
2.1 List of operation modes
0
ASCII mode / Configuration Mode (Chapter 3.1)
The Sensor sends measurement results in ASCII format according to the user’s
commands and parameter settings. In this mode the sensor receives commands like
parameter change and state control or operation mode selection.
1
Continuous ASCII mode (Chapter 3.1)
The sensor sends measurement results in ASCII format continuously according to the
parameter settings.
5
Trigger window mode (Chapter 5.1)
The sensor controls the measurement results in the trigger window, and according to
parameters it gives trigger-output-signal and sends trigger distance to serial-port. In this
mode the Speeder sensor operates with one laser for accurate detection.
7
Speed measurement mode for vertical installation (Chapter 4.1)
The sensor waits for the target to be in the trigger window and then starts measuring the
change of distance to the target in the selected windows. Speeder X1 comprises two
integrated laser transmitters with a small angle, allowing measurement of two
consecutive overlapping speed profiles from the vehicle.
12
Speed measurement mode for horizontal installation (Chapter 0)
The mode is designed to be used from the side of the road at the level of vehicles. The
mode gives possibility to catch speed of vehicles travelling on one or multiple lanes.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 9/36
____________________________________________________________________________________
2.2 Output at starting of the operation mode
Output of the sensor after mode command (<esc>M<No.><cr>) are following:
Mode <No.>
0
1
5 (example)
7 (example)
12 (example)
Output
MOK, no effect
MOK
Dxxxxx [aaaaa]
Dxxxxx [aaaaa] ....
MOK
TRIGGER MODE
TRIG IN 500–550 cm
ESC to EXIT
MOK
Speeder X1 SPEED MODE
Approaching vehicles
MASTER DISTANCE 3059 cm
SLAVE DISTANCE 2860 cm
ESC to EXIT
MOK
HORIZONTAL INSTALLATION (MULTILANE)
Speeder X1 SPEED MODE
Approaching vehicles
MASTER DISTANCE 3500 cm
SLAVE DISTANCE 3279 cm
ESC to EXIT
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 10/36
____________________________________________________________________________________
3 DISTANCE MEASUREMENTS
3.1 ASCII Mode
The value of the Parameter 1 is 0 (= single) or 1 (= continuous).
In this mode the sensor measures the distance to the target either after the detection of
<space> character or by the activation of Digital-input-signal or by the user command (c
or C). Serial port communication is in ASCII format. The maximum measurement speed
in ASCII mode depends on the communication speed and parameter settings.
Continuous mode can be activated by command <esc>M1<cr> or <esc>M<cr> if value of
par. #1 is 1.
Parameters related to ASCII mode are:
No.
1
2
3
4
5,6
7
8
11
47
Type
B
B
b4
B
b2
b3
b5
B
W
B
B
B
B
Name / Description
Operation Mode
Control Byte 1
Hardware Input Disable
Control Byte 2
Decimal Enable
Amplitude Output Enable
Fast Key Disable
Baud Rate
Pulse Rate
Averaging
Attenuation
Device Number
Laser Control
Unit
Range
Default
0 or 1
0
Hz
2n
1 - 10
1-2000
0 - 14
0 - 15
0-9
0,1,2
0
1
0
4
2000
4
0
0
2
3.1.1 ASCII format of the distance measurement
The data in ASCII mode is delivered in the following format:
Distance result from the sensor
Dzxxxxx[.d]<space>[aaaaa]<cr><lf>
z
xxxxx
.d
aaaaa
is automatically added number for values > 99m
is distance in millimetres,
is the decimal digit (option),
is the signal amplitude value (option)
The answer format depends on Decimal Enable in Control Byte 2 (Bit 2) as follows:
“1”: Dxxxxx.x aaaaa.a
“0”: Dxxxxx aaaaa
Received signal amplitude (aaaaa) is sent if Amplitude Output is Enabled (Control Byte 2,
Bit 3 = 1). It can be used for analyzing a quality of measurement. The higher the value,
the better quality of a distance measurement result. The range is a few tens up to 1300.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 11/36
____________________________________________________________________________________
D00000 refers to a failed distance measurement in the case of which the amplitude value
carries an error code. The Code is given only if the Amplitude Output is Enabled (Control
Byte 2, Bit 3 = 1).
Error messages in ASCII distance measurement mode:
Hex value
1
2
4
8
10
20
40
80
100
200
400
800
1000
2000
4000
8000
Dec val.
1
2
4
8
16
32
64
128
256
512
1024
2048
4096
8192
16384
32768
Error
EEPROM R/W error
No object
Receiver error
TDC counter error 1
TDC counter error 2
Low battery
Supply voltage
Invalid value
Unknown command
TDC counter error 3
EEPROM or FLASH Checksum error
Voltage error
APD voltage error
Temperature
Power consumption
High Voltage error
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 12/36
____________________________________________________________________________________
4 SPEED MEASUREMENTS
4.1 Speed measurement mode for vertical installation
The value of the Parameter 1 is 7.
Speeder
1
5
Fig. 1.
An example of speed measurement using Speeder X1 laser radar. Speeder X1 has two
separate laser beams A and B.
The geometry of the measurement is recommended to be >5:1 (please see the Fig. 1): For example, if the
sensor is at 5 m height it should be aimed to at least to 25 m distance in order to achieve good speed
measurement readings.
Fig. 2.
Default orientation of the Speeder X1 laser radar for vertical installation is laser radiation
sticker up. When orientation is changed parameter 53 must be set correspondingly.
Setup in Fig. 1 and Fig. 3 applies for controlling of one lane per sensor. The sensor is aimed
at the centre of the lane for desired distance. Furthermore, the sensor comprises a laser
pointer, which can be used to set correct alignment. The laser pointer has poor visibility
at bright daylight and when used in fixed installation with a camera it is advised to align
the sensor with the camera at indoors. This enables the final aiming with the help of the
camera.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 13/36
____________________________________________________________________________________
The best accuracy is achieved when the sensor measures as far as possible with
reasonable signal level. The distance to the vehicle can be up to 40 to 90 metres, when
the register plate is reflective, and up to 30 metres without reflective register plates. To
achieve proper illumination for LPR-camera it is sometimes necessary to use shorter
distance. Another option is to use delayed trigger, which is described in paragraph 4.1.2.
The speed of both approaching and departing vehicles can be measured. The selection of the direction is
done by Bit 5 of Control Byte 1.
Fig. 3.
Detection of vehicle with Speeder X1 laser radar affixed on gantry above the lane.
Speed measurement starts with detection of the vehicle when trigger is first activated in
the trigger window. Trigger activation is achieved when amount of the distance results
reaches the hits for trig parameter’s value. After detection sensor measures distance to
the target until vehicle has passed and calculates the speed of the target. The accuracy
for the speed measurement is better than ±2 km/h (±2% for over 100 km/h speeds), when
the measurement beam hits the vehicle (which travels on the lane, not on the side of it).
In order to use the mode user must set following parameters:
No.
1
2
4
5,6
8
9,10
12,13
29,30
32
53
Type
B
B
b5
B
W
B
W
W
W
B
B
Name / Description
Operation Mode
Control Byte 1
Speed Behind
Baud Rate
Pulse Rate
Attenuation
Trigger Distance B
Trigger Distance A
Speed Pulse Rate (Note 1)
Speed Geometry
(Note 2)
Sensor Orientation
Unit
Hz
cm
cm
Hz
dm
Range
1 - 10
1 - 2000
0 - 15
600 - 38000
600 - 38000
0 - 8000
0,1,2
Default
7
0
4
2000
0
4000
1
Note 1: Speed pulse rate is in use after detection of a vehicle in speed measurement application (or
mode). Speeder X1 is class 1 laser product. Eye-safety standard limits the pulse rate of Speeder X1 to
2000 Hz for pulse trains in short range (Condition 2, target distance less than 2 meters). Laser pulsing
exceeding 2000 Hz is allowed only while measured distance is more than 2 meters. Pulse train limitations
are controlled programmatically to fulfil the Standard EN 60825-1:2007 (IEC 60825-1:2007) Condition 2.
Note 2: The height of the sensor position is utilized to calculate measurement windows for both lasers
according to the geometry of the measurement set-up. The user must set this parameter accordingly to
achieve accurate speed measurement results.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 14/36
____________________________________________________________________________________
Advanced configuration parameters for above the road operation:
No.
14
15
17
18
31
36
37
39
45
46
51
Type
B
B
B
B
B
B
B
W
B
B
B
b5
b7
Name / Description
Trigger Window Width
Hits For Trig
Trigger Length
(Note 3)
Clear Check Time
Speed Calculation Start
Speed Limit Large
Speed Limit
Vehicle Height Limit
Classification Window
Speed Verification Distance
Control Byte 5
Speed Verification Digital IO Control
Trigger From Beam A (Note 4)
Unit
dm
smpls
ms
10 ms
dm
km/h
km/h
cm
dm
dm
Range
1 - 255
1 - 255
1 - 255
0 - 255
0 - 10
40 - 255
0 - 255
Default
51
10
255
30
0
0
0
0
40
0
0
0
Note 3: Setting Trigger Length = 255 keep the trigger active until vehicle has passed the measurement
point.
Note 4: Beam that sets trigger output signal (DIGOUT) can be selected for approaching vehicles. When
this bit is set trigger will occur when vehicle is detected by Beam A. In case bit is cleared or Speed limit is
set trigger will occur when vehicle is detected by Beam B.
Following information may be added to the result:
No.
2
26
48
50
51
Type
B
b0
b7
B
b1
b2
b3
b7
B
B
b0
b1
b2
b3
b4
b6
B
b2
b3
b4
Name / Description
Control Byte 1
Profile Measurement
Vehicle Size
(Note 5)
Control Byte 3
Disable Ok Text
Speed Output 0: km/h 1: MPH
Show Speed Histogram
Vehicle Height
Snow Ground Distance
Control Byte 4
Trigger Time Output
Trigger Time Interval
Trigger Occupancy Time
Traffic Flow
Count Output
CSV output
Control Byte 5
Show Violation Only
Measure Amount Of Snow Fall
Show Speed Error Byte
Unit
Range
Default
0
0
cm
0 - 38000
0
0
0
0
0
0
0
0
0
0
1
0
0
0
Note 5: The vehicle size (length) is an estimation based on the speed and the time the sensor is able to
get results from a vehicle. This principle generates longer value for higher vehicle than its real length is.
Note! In this mode the sensor will send the message ”OK” once a minute if the sensor is
functional (the message can be disabled by Bit 1 of Control Byte 3, par. 26).
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 15/36
____________________________________________________________________________________
The software calculates two consecutive speed values. First it calculates quickly a rough
speed value utilizing preliminary results of the collected data. This value is called
‘QSpeed’. QSpeed is used to generate triggering output for speeding vehicles in real time.
Speeder X1 detects the driving direction of the vehicle and compares it to the setting
(prm2bit5). In case driving direction is opposite speed value cannot be calculated and
QSpeed value is set as wrong direction “QSpeed = WD”.
Thereafter the sensor calculates the speed value with a more sophisticated algorithm
utilizing all the collected data. The calculation may take 50…150 ms depending on the
quantity of data.
Typically vehicles that are changing lanes or driving on the side of the lane cause the
biggest errors, because the sensor may measure the speed from the side of the vehicle
or the measurement point may change significantly during measurement. In the cases of
difficult data or poor aiming, the sensor typically indicates “Speed = NA”.
The result given by the sensor is as follows:
(CSV, control byte 4 bit 6 is set):
caption
;DIST_A;DIST_B;ELT;DIR;QSPD;SPD;Q;Size;OCC;Height;INT;CNT;ERR;
A_OK;A_ALL;B_OK;B_ALL;CNT2;Flow;AveSPD
<;3655;3328;0:00:02.774;A;106;103.2;01;003;0127;123;02.497;0000002;000;
163;165;133;133;142;852;100;>
results
Result fields are described in the table below. In error situation speed value is zero.
(CSV not set):
Sensor
T 3655 3328
CSV
DIST_A
DIST_B
[ELT: 0:00:02.774]
ELT
[INT: 02.497 s]
[CNT: 000002]
[A: 163/165
B: 133/133]
INT
CNT
A_OK/ALL
B_OK/ALL
QSpeed = +106
[Height = 123]
QSPD
Height
[discard =
0]
ERR
Speed = +103.2
km/h (1)
SPD
[Size = 3]
Size
[OCC: 127 ms]
OCC
Explanation
Vehicle was detected by beam A at 36.55 metres (B 33.28)
Option (prm50bit0): Time from the beginning of the
measurement session
Option (prm50bit1): Time between triggers
Option (prm50bit3): Number of the triggering
Option (prm51bit4): Amount of measurement results from beam
(A/B) and accepted results for speed calculation. This output is
intended for R&D phase evaluation.
Calculated quick speed value [km/h]
Option (prm26bit7): Height value is the difference between the
shortest detected distance to the vehicle and triggering window
maximum.
Option (prm51bit4): When nonzero discard value is received the
speed value is not fully reliable. This output is intended for R&D
phase evaluation.
Result of a more sophisticated calculation. Value in parenthesis
is an estimate for the error direction and magnitude. (‘-‘ Means
possibility for lower reading than the real value).
Option (prm2bit7): Size value that is based on the speed and
time the vehicle stayed in the sensor’s field of view.
Option (prm50bit2): Time how long the vehicle has been in
Triggering window
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 16/36
____________________________________________________________________________________
[Count (10 minutes):
142]
[Cars per hour: 852]
[Average speed:
100]
CNT2
Flow
AveSPD
Option (prm50bit3): Vehicle count for the past ten minutes.
Value is updated once in a minute.
Option (prm50bit3): Traffic flow for one hour, based on the count
for the past ten minutes. Value is updated once in a minute.
Option (prm50bit3): Average speed for the past ten minutes.
Value is updated once in a minute.
Error response is the following; it is given instead of the speed reading:
Speed = NA
4.1.1 Speed calculation method
The Speeder X1 is equipped with an advanced dual laser transmitter to allow
measurement of two consecutive distance profiles. Both lasers measure the profile from
the point where the beam hits onto the vehicle. The measurement starts, when the vehicle
arrives into the triggering window of the sensor. Laser which is responsible for detection
is selected with the traffic direction bit (parameter 2 bit 5). For approaching vehicles Beam
A detects vehicle and for departing Beam B respectively. The sensor starts the speed
measurement having detected the vehicle and checked the correctness of the triggering.
The principle of operation is to measure two distance profiles onto a vehicle from two
successive positions on the road. Both profiles include about 50 to 200 measurements
depending on the setup and speed of the vehicle. Both profiles are then analyzed and
converted to speed. Finally the profiles are compared to each other to get rid of the
errors and the final speed value is calculated.
This enhanced analysis results high accuracy speed values. The measurement onto a
vehicle may get result from any part of a vehicle and either from approaching or departing
vehicle.
4.1.2 Delayed trigger in speed measurement
Parameter 46 (Speed verification distance) sets the distance where speed based trigger
will occur. This distance can be set from 0.1 to 25.5 meters (parameter value in 0.1
meters, range 0-255). With this parameter it is possible to check whether or not the speed
reading provided by Speeder X1 is acceptable. Speed reading evaluation is based on
visual inspection i.e. how well the speed based travel time matches to the fixed distance
set by the parameter. Another application is to move the triggering point closer in order
that LPR-camera obtains acceptable illumination (provided by flash).
Setting the distance to parameter 46 enables the delayed trigger at DIGIN/DIGOUT (pin
5, grey wire). Parameter 17 Trigger length is used to set delayed trigger length. Trigger
signal operates normally at DIGOUT (pin 6, pink wire). Furthermore, it is possible to
disable normal trigger and set delayed trigger output to the DIGOUT signal by setting
Parameter 51 bit 5 (Speed Verification Digital IO Control).
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 17/36
____________________________________________________________________________________
Detection of a target
Detection
Ready for new detection
Digital Input/Output
Delayed distance
(par. 46)
Trigger Legth
(par. 17)
Clear Check Time
(par. 18)
Digital Output
Fig. 4.
Timing of the Digital outputs when delayed trigger is activated.
4.1.3 Profile measurement
Sensor is able to output distance information during the vehicle detection. Output is in
binary format as described below. Binary format doesn’t effect on normal speed output
and trigger functions. Speed output occurs after binary output in selected format.
Vehicle profile is calculated based on the raw distance data when installation height,
measurement distance to the ground and vehicle speed are known.
Fig. 5.
Noptel laser radar collects distance measurement data from the area between the sensor and
the road surface detecting all passing vehicles. It is possible to acquire exact profile regarding
passing vehicle with activated profile measurement.
The profile measurement data is delivered in 2 or 3 bytes depending on the control bits.
Profile data format can be used for distances up to 81.9 metres. Raw data output
originates from single laser (Beam A for approaching and Beam B for departing). Sensor
has two different measurement rates, pulse rate (parameter 5) is used for accurate
vehicle detection and speed pulse rate (parameter 29) for speed measurement. Profile
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 18/36
____________________________________________________________________________________
measurement output rate for raw distance data is (Pulse rate)/8 and (Speed pulse
rate)/16. Suggested values are 2000 for pulse rate and 4000 for speed pulse rate. With
these suggested values output rate will be 250 measurements/second for entire vehicle
detection.
First data byte
MSB
No.
7
LSB
6
5
4
3
2
1
0
1
Value
h80
h40
x
x
x
x
x
x
x
h00
to
h3F
Note
Start of the data bytes
Error bit
0 = Correct distance measurement
1 = Error in distance measurement
Distance Value MSB or Error code
- Distance bits 12 to 7
- Error Code if bit 6 = 1
Second data byte
MSB
No.
LSB
7
6
5
4
3
2
1
0
Value
0
x
x
x
x
x
x
x
h00
to
h7F
Note
Distance Value LSB
- Distance bits 6 to 0 [cm]
- ‘E’ if error (h45)
Third data byte (only if bit 3 of Control Byte 2 Enabled)
MSB
No.
LSB
7
6
5
4
3
2
1
0
Value
0
x
x
x
x
x
x
x
h00
to
h7F
Note
Signal Amplitude
- Amplitude divided by 16
- ‘R’ if error (h52)
Distance = 128 x Distance Value of First Data Byte + second byte [cm]
4.1.4 Snow accumulation measurement
Speeder is able to measure snow accumulation on the road while operating in speed
measurement mode. Accumulation is switched on with Control Byte 5 bit 3 “Measure
Snow Fall”. Ground level (distance to the ground) is set to word parameter 48 “Ground
distance” in centimetres. Running “Automatic setting of measurement window” (Chapter
4.3) sets ground distance value in case Speeder is able to measure on to the ground.
Furthermore this value can be set manually when the distance is known.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 19/36
____________________________________________________________________________________
4.2 Speed measurement mode for horizontal installation
The value of the Parameter 1 is 12.
Horizontal mode measures speed from the side of the road and can detect vehicles
travelling on parallel lanes. Speeder X1 comprises two lasers and it must be installed in
correct orientation for intended application. Orientation for horizontal installation is shown
in the Fig. 6. Horizontal installation height is on the same level with cars i.e. measurement
beam hits the front of the car at the same height in both lanes (height of the licence
plates). Measurement beam hitting the target is shown in the Fig. 6. The height of the
measurement beam should be lower for the car in the picture but it is correct for higher
vehicles. Installation is always a compromise because the size of cars varies in real
measurement situations.
Measurement angle against the lanes should be such that the cars in the first lane are
detected roughly on 20 meters and cars on the second lane at 40 meters. In practise, set
the detection distance for the second lane at least to 40 meters and for the first lane it is
what it is. Sensor is set for operation with parameters. These parameters depend on
installation geometry and are shown in the Fig. 7. Thereafter programmatic calibration is
carried out for the horizontal measurement.
Fig. 6.
Orientation of the Speeder X1 sensor for horizontal measurement. In default orientation
connector is up and parameter 53 setting is 1.
2
Par. 43
Par. 32
1
Par. 12, 13
Fig. 7.
Speeder
Parameter settings.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 20/36
____________________________________________________________________________________
With parameter 43 is set maximum measurement distance, which expresses the distance
to the furthest point at the measured lanes [m]. Parameter 12/13 is the shortest monitored
distance, which is shortest distance on the closest lane [cm]. Parameter 32 is the
perpendicular component of the furthest measured distance.
In order to use the mode user must set following parameters:
No.
1
2
4
5,6
8
12,13
29,30
32
43
44
53
Type
B
B
b5
B
W
B
W
W
B
B
B
B
Name / Description
Operation Mode
Control Byte 1
Speed Behind
Baud Rate
Pulse Rate
Attenuation
Trigger Distance A
Speed Pulse Rate
Speed Geometry
Trigger Window End for Multiple Lanes
DirChangeDist
Sensor Orientation
Unit
Hz
cm
Hz
dm
m
m
Range
1 - 10
1-2000
0 - 15
0 - 38000
2k – 8k
1 - 255
0 - 255
0,1,2
Default
12
0
4
2000
0
4000
1
Advanced configuration parameters for the road side operation:
No.
15
17
18
31
37
46
51
Type
B
B
B
B
B
B
B
b5
b7
Name / Description
Hits For Trig
Trigger Length
Clear Check Time
Speed Calculation Start
Speed Limit
Speed Verification Distance
Control Byte 5
Speed Verification Digital IO Control
Trigger From Beam A
Unit
smpls
smpls
10 ms
dm
km/h
dm
Range
0 - 255
0 - 255
0 - 255
2 - 10
Default
>=10
4
30
5
0-255
0
0
Following information may be added to the result:
No.
2
26
50
51
Type
B
b7
B
b1
b2
b3
B
b0
b1
b2
b3
b4
b6
B
b4
Name / Description
Control Byte 1
Vehicle Size
Control Byte 3
Disable Ok Text
Speed Output 0: km/h 1: MPH
Show Speed Histogram
Control Byte 4
Trigger Time Output
Trigger Time Interval
Trigger Occupancy Time
Traffic Flow
Count Output
CSV output
Control Byte 5
Show Speed Error Byte
Unit
Range
Default
0
0
0
0
0
0
0
0
0
1
0
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 21/36
____________________________________________________________________________________
The size calculation is based on the time the vehicle is detected, which causes an effect
that a closer vehicle is estimated to be bigger than a far one even though the actual length
of the vehicles is the same. The speed measurement principle itself and the output of the
sensor are identical to the mode 7 (Speed measurement mode).
4.3 Automatic setting of the measurement window
Speeder X1 includes a function that helps the user to set up the triggering window at a
correct distance. The function is designed to be used with both Speed measurement
modes, vertical measurement (#7) and horizontal measurement (multiple lanes)(#12).
Calibration is carried out for both approaching and departing vehicles. For approaching
vehicles bit 5 of Control Byte 1 (par. 2) must be cleared. Calibration is started with
command “U”.
To calibrate the triggering window for the departing vehicles bit 5 of Control Byte 2 (Speed
Behind) must be set. A complete calibration cycle requires 12 vehicles to pass the
measurement area. Two vehicles are used to evaluate the orientation of the sensor and
10 to detect correct measurement window.
When orientation of the sensor is unknown to user it is possible to set parameter 53 to
value 0. Function detects the orientation of the sensor before setting up the measurement
window. When the parameter setting and orientation detection are opposite user is
informed before changing the setting.
The sensor will guide the user through the calibration procedure. Setting up the calibration
is shown in the next paragraphs with example outputs for both measurement modes.
4.3.1 Vertical setup
Before entering the vertical setup mode the sensor must be aimed correctly. Make sure
that the height of the sensor is set correctly [parameter 32, Speed geometry (height from
the ground in decimeters)]. Furthermore, please check that the parameter 43 is set as
zero. Orientation of the sensor is set by parameter 53. Default setting (53 = 1) is such
that laser radiation sticker side of the sensor is set up.
The calibration mode is activated with command [ESC]U[CR].
Output
Using height (SpeedGeometry) 600 cm (Y/N)
Vertical setup
Calibration of two laser beams for approaching vehicles
Wait until 10 vehicles are detected (ESC to exit)
Distance value [cm] and average signal table:
Monitored Max | Detected Max | Signal average
Beam A: 2764 |
2721
| 397
Beam B: 2696 |
2660
| 235
median: 2566
Comment
Verify or change
parameter 43 is zero
bit 5 of Control Byte 1 is cleared
10 vehicles are monitored
distance information for each car
median triggering window
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 22/36
____________________________________________________________________________________
final 2571.7
ACCEPT WINDOWS:
Beam A: 2235 - 2747
Beam B: 2060 - 2572
(Y/N)?
MEASUREMENT WINDOW SETUP SUCCESSFUL!
SAVE PARAMETERS TO EEPROM (Y/N)?
SAVED TO EEPROM!
WINDOW CALIBRATED
NORMAL MODE
final triggering window, difference
compared to median should be less
than 20
Accept with “Y” if reasonable
Save to eeprom with “Y”
4.3.2 Horizontal setup
Before entering the horizontal setup mode the sensor must be aimed correctly. Make sure
that the geometrical parameters of the measurement setup are set correctly. Parameter
43 is set to maximum measurement distance (meters) and parameter 32 (Speed
geometry) is perpendicular distance component (in decimeters) of the parameter 43.
Parameter 12 is set to minimum detection distance (centimeters).
The calibration mode is activated with command [ESC]U[CR].
Output
Calibration for horizontal measurement (Y/N)?
Use maximum measurement distance 40 m (Trigger
Window End for multiple lanes)(Y/N)?
Use 300 cm as shortest detection distance for multiple
lanes (Y/N)?
Use (SpeedGeometry) 650 cm as perpendicular part
of the max measurement distance (Y/N)?
Horizontal setup
Calibration of two laser beams for approaching
vehicles
Wait until 10 vehicles are detected (ESC to exit)
Distance value [cm] and average signal table:
Monitored Max | Detected Max | Signal average
Beam A: 2342 |
2302
| 397
Beam B: 2266 |
2221
| 321
median: 2179
final 2177.8
ACCEPT WINDOWS:
Beam A: 1813 - 2313
Beam B: 1678 - 2178
(Y/N)?
MEASUREMENT WINDOW SETUP SUCCESSFUL!
SAVE PARAMETERS TO EEPROM (Y/N)?
SAVED TO EEPROM!
WINDOW CALIBRATED
NORMAL MODE
Comment
Horizontal mode if value in parameter 43
is nonzero, answer “Y”
Value of parameter 43, answer “Y” if
correct.
Value of parameter 12, answer “Y” if
correct
Value of parameter 32, answer “Y” if
correct.
parameter 43 is nonzero
bit 5 of Control Byte 1 is cleared
10 vehicles are monitored
distance information for each car
median triggering window
final triggering window, difference
compared to median should be less than
20
Accept with “Y” if reasonable
Save to eeprom with “Y”
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 23/36
____________________________________________________________________________________
5 DETECTION MODES
5.1 Trigger window mode
The value of the Parameter 1 is 5.
The command [m] sets the sensor into Trigger window mode, when parameter 1 is set
correspondingly. The sensor does not only send the distance value via serial port, but
gives triggering mark "T" and distance [cm], whenever trigger is activated. The triggering
signal is also given to digital output line according to parameters.
Note: In this mode an “OK” message will be sent every minute if the sensor is functional
(“OK” text can be disabled by bit 1 of parameter 26).
Parameters related to Trigger window mode are:
No.
1
2
4
5,6
8
12,13
14
15
17
18
26
50
Type
B
B
b1
B
W
Name / Description
Operation Mode
Control Byte 1
Trigger Out of Window
Baud Rate
Pulse Rate
B
W
B
B
B
B
B
b1
B
b0
b1
b2
b4
Attenuation
Trigger Distance
Trigger Window Width
Hits For Trig
Trigger Length
Clear Check Time
Control Byte 3
Disable Ok Text
Control Byte 4
Trigger Time Output
Trigger Time Interval
Trigger Occupancy Time
Count Output
Trigger Distance
(par. 12, 13 [cm])
Fig. 8.
Unit
Hz
cm
dm
smpls
smpls
10 ms
Range
1 - 10
See
Chapter 6.3
0 - 15
0 - 38000
1 - 255
0 - 255
0 - 255
0 - 255
Default
5
0
4
2000
0
>= 5
4
30
0
0
0
0
0
Trigger Window Width
(par. 14 [dm])
Trigger Distance and Trigger Window Width in Trigger Window Mode
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 24/36
____________________________________________________________________________________
Detection of a target
Detection
Ready for new detection
Digital Output
Trigger Legth
(par. 17)
Fig. 9.
Clear Check Time
(par. 18)
Timing of the Digital output in Trigger Window Mode
The sensor measures at a selected measurement rate the distance to the target. If the
selected number of measurements (par 15) are detected inside the window (par 14 [x 10
cm]) in the selected distance (par 12, 13 [cm]), the Sensor sends a trigger signal of
selected length (par 17) to the digital output line and an ASCII character "T" to the
communication port. During the triggering pulse the sensor does not detect any new
targets.
New detection will start, when the sensor has not detected objects in the triggering
window during the clear check time (par 18).
The sensor provides a function to help the user to set up the proper triggering distance.
This function is described in Chapter 4.3 Automatic setting of the measurement
window.
5.1.1 In window and Out of window triggering
The trigger window mode has two alternative operation principles. Normally the trigger
signal is given when target is detected in the specified window. But if bit 1 of Control Byte
1 “Trigger Out of Window” is selected, the trigger signal will be given at the moment
measurements come outside of the specified window and also in case of failed
measurements.
The Out of Window triggering mode can be used for example if sensor is assembled to
such location that it can always detect ground (or road) and user want to get exact timing
information from the incoming vehicle. Furthermore this mode enables possibility to get
continuous trigger signal as long as the vehicle stays in the measurement beam, even
when the beam is reflected so that the sensor is not able to get distance measurements
from the vehicle (In this case set identical value to parameters #15 “Hits For Trig” and
#17 “Trigger Length”. Set also zero to parameter #18 “Clear Check Time”.)
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 25/36
____________________________________________________________________________________
5.1.2 Trigger count and timing information
The user can get different timing information, such as the trigger event time, time between
trigger events, and trigger occupancy time. The sensor can also be set to count the
triggers.
The trigger event time is the elapsed time from the start of the trigger mode to the trigger
moment. This function is enabled by setting bit 0 of Control Byte 4 (par #50).
Time between trigger events is enabled by setting bit 1 of Control Byte 4 (par #50).
The trigger occupancy time is the time the target is inside the triggering window. It is
enabled by bit 2 of Control Byte 4 (par #50).
Trigger counting can be enabled by bit 4 of Control Byte 4 (par #50).
If all the above-mentioned functions are enabled, the output of the trigger event looks
the following:
Output
T01234
ELT: 0:00:09.432
INT: 02.321 s
CNT: 000004
OCC: 01017 ms
Comment
Target was detected at 12.34 m
Elapsed time h:mm:ss.sss
Time from previous trigger in seconds
Number of the trigger
Time the target was in the triggering window
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 26/36
____________________________________________________________________________________
6 PARAMETERS
The Sensor includes a user parameter area, which defines the operation of the Sensor.
This parameter area comprises, for example, the definition of the measurement rate,
operation mode, and data transmission mode. There are two parallel parameter areas:
one in permanent memory and the other currently in use in non-permanent memory. The
parameters in permanent memory will be taken into use after power is switched on. You
can modify the parameters in non-permanent memory, and after finishing the
modification, store them into the permanent memory.
6.1 User parameter commands
User parameters can be set by command:
Command from PC
Reply
<esc>T<No.>,<Value><cr>
TOK<cr><lf> or “Invalid Value<cr><lf>”
<esc>
T
No.
Value
<cr>
ASCII code 27
Command (ASCII code 84)
parameter #1-61 in ASCII format
parameter value 0-255 in ASCII format
ASCII code 13
Example: Set the baud rate to 115200 baud:
Command from PC
Reply
<esc>T4,8<cr>
TOK<cr><lf> (Baud Rate before change)
The parameters in two successive bytes (word) can be set by one command:
Command from PC
Reply
<esc>TW<No.>,<Value><cr>
TOK<cr><lf> or “Invalid Value<cr><lf>”
<esc>
TW
No.
Value
<cr>
ASCII code 27
Command
parameter #1-61 in ASCII format
parameter value 0-65536 in ASCII form
ASCII code 13
Example: Set the Pulse Rate to 2000 Hz:
Command from PC
<esc>TW5,2000<cr>
Reply
TOK<cr><lf>
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 27/36
____________________________________________________________________________________
User parameters can be read by command:
Command from PC
Reply
<esc>L<No.><cr>
L00xxx<cr><lf>
<esc>
L
No.
<cr>
xxx
ASCII code 27
Command (ASCII code 76)
parameter #1-61 in ASCII format
ASCII code 13
Value of parameter
Example: Read the parameter 19:
Command from PC
Reply
<esc>L19<cr>
L00060<cr><lf>
The parameters in two successive bytes (word) can be read by one command:
Command from PC
Reply
<esc>LW<No.><cr>
L00xxx<cr><lf>
<esc>
LW
No.
<cr>
xxx
ASCII code 27
Command
parameter #1-61 in ASCII format
ASCII code 13
Value of parameter
Example: Read the Word parameter 5:
Command from PC
Reply
<esc>LW5<cr>
L02000<cr><lf>
All available user parameters can be read by command:
Command from PC
Reply
<esc>L<cr>
L0001 00xxx<cr><lf>
L0002 00xxx<cr><lf>
L0003 00xxx<cr><lf>
…
<esc> ASCII code 27
L
Command (ASCII code 76)
<cr> ASCII code 13
xxx
Values of parameters
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 28/36
____________________________________________________________________________________
6.2 Permanent memory parameters
Writing parameters into permanent memory requires special attention.
Permanent memory parameters are protected by a special lock that has to be opened
before changing the parameters. The parameter area is also protected by checksum
calculation. If the checksum is wrong, the sensor does not perform measurements.
Having transferred the user parameters into the permanent memory, the sensor
automatically calculates the checksum.
To enable the permanent memory for writing:
Command from PC
Reply
<esc>X<cr> (X, ASCII-code 88, h58)
WR ENABLE<cr><lf>
Parameters are set to permanent memory by command:
Command from PC
Reply
<esc>S<cr> (S, ASCII-code 83, h53)
SOK<cr><lf>
Parameters can be read from permanent memory by command:
Command from PC
Reply
<esc>P<No.><cr>
P00xxx<cr><lf>
<esc> ASCII code 27
P
Command (ASCII code 80)
No.
parameter #1-61 in ASCII format
<cr>
ASCII code 13
xxx
Value of parameter
6.3 Parameter list
The sensor includes three types of parameters. In binary format each bit in the parameter
carries meaning. In byte (8 bit) and word (16 bit) formats the parameter is able to receive
values from 0 to 255 and from 0 to 65000 respectively.
In the following descriptions these parameters are marked as:
 B
 W
= Byte (8 bits)
= Word (2 bytes)
Note: All parameters are not valid for all software versions.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 29/36
____________________________________________________________________________________
No.
1
Type
B
2
3
4
B
B
B
Name / Description
Operation Mode
ASCII mode and Configuration mode
ASCII mode, continuous
Triggering window mode
Speed measurement for vertical installation
Speed measurement for horizontal installation
Control Byte 1 (See Chapter 6.4)
Control Byte 2 (See Chapter 6.5)
Baud Rate
W
1 = 1200 Bd
2 = 2400 Bd
3 = 4800 Bd
4 = 9600 Bd
5 = 19200 Bd
6 = 38400 Bd
7 = 57600 Bd
8 = 115200 Bd
9 = 230400 Bd
10 = 460800 Bd
11 = 921600 Bd
Pulse Rate
B
Laser pulsing rate
- Averaging rate in Normal mode,
- Vehicle detection in Speed
measurement and detection modes
Averaging
B
Average calculation of [2n] single shot
measurements to produce the final distance
value. E.g. n = 4 => Average = 16.
Note: Affects Normal mode only. Average
calculation affects the final measurement
speed. Sensor needs also some time interval
between every output of the result for serial
communication and internal operations, i.e. the
total result rate is a combination of parameter
settings and this interval.
Attenuation
W
The receiver sensitivity level can be attenuated
by this parameter.
Used for example with retro-reflectors.
0 = maximum sensitivity (natural targets),
15 = maximum attenuation (prisms)
Trigger Distance Beam B
B
Mode 7&5 (Chapter 4.1&5.1): Minimum
distance value for Beam B trigger window
Mode 12 (Chapter 0): Not user configurable.
Parameter has same meaning for Beam B as
par. 43 has for Beam A, see Chapter 4.3
Device Number
5,6
7
8
9,10
11
Unit
Range
Default
Value
0
1
5
7
12
1 - 11
4
Hz
50 – 2000
2000
2n
0 – 14
4
0 - 15
0
cm
0 - 38000
0-9
0
Sensors connected to the same serial port are
selected by the device number.
Command format is presented in chapter 1.2.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 30/36
____________________________________________________________________________________
12,13
14
15
17
18
26
29,30
31
32
36
W
Trigger Distance Beam A
cm
0 - 38000
B
Mode 7&5 (Chapter 4.1&5.1): Minimum
distance value for Beam A trigger window
Mode 12 (Chapter 0): Minimum detection
distance for speed measurement
Trigger Window Width
dm
1 - 255
B
Window size of triggering, starting from the
value in P12,13
Hits For Trig
smpls
0 - 255
>= 5
B
Number of accepted measurement values
before activating trigger pulse
Trigger Length
ms
0 - 255
255
B
Note: In the case of speed measurement, the
minimum length of the trigger is defined by the
time of speed calculation.
In the same mode setting Trigger Length = 255
keeps the trigger active until vehicle has
passed the measurement point.
Clear Check Time
10 ms
0 - 255
30
B
W
Time from the last measurement in the trigger
window required to re-activate Triggering
mode.
Control Byte 3 (See Chapter 6.6)
Speed Pulse Rate
Hz
2000 –
8000
4000
B
Speed pulse rate is in use after detection of a
vehicle in speed measurement application (or
mode). Speeder X1 is class 1 laser product.
Eye-safety standard limits the pulse rate of
Speeder X1 to 2000 Hz for pulse trains in short
range (Condition 2, target distance less than 2
meters). Laser pulsing exceeding 2000 Hz is
allowed only while measured distance is more
than 2 meters. Pulse train limitations are
controlled programmatically to fulfil the
Standard EN 60825-1:2007 (IEC 608251:2007) Condition 2.
Speed Calculation Start
dm
2 - 10
B
The starting point of speed calculation: This
parameter defines how long a distance from
the triggering point is rejected in speed
calculation.
Speed Geometry
dm
0 - 255
B
Dimensional offset of the sensor from the line
of movement of the measured object
E.g. height of the Sensor above the road
surface, 55 dm
Speed Limit Large
km/h
0 - 255
A speed limit for vehicles higher than defined
by parameter 39.
Notice that it can only be used with top of the
road installations and mode 7 (Speed mode
For Vertical Installation)
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 31/36
____________________________________________________________________________________
37
39,40
43
44
46
47
B
Speed Limit
km/h
0 - 255
W
If the speed limit is zero, hardware triggering is
given always when a vehicle is detected. If the
speed limit is set, the triggering is given out
only for speeding vehicles.
NOTE! The unit is [km/h] even if bit 2 of
parameter 26 is set!
Vehicle Height Limit
cm
200 - 1000
B
Setting up height limit for Speed Limit Large,
parameter 36.
The height value is the difference between the
shortest measured value from the vehicle and
the far end of the triggering window.
For example, in a set-up where the sensor
locates 6 metres above the road and the
maximum distance to vehicles is 30 metres, a
2-metre height limit means a value of 1000 cm.
But as the measurement window does not
reach the surface of the road, typically a value
of approximately 750 is used.
The user may check the actual height values of
different vehicles by enabling ‘Height’
measurement by bit 7 of parameter 26 and
making some test speed measurements.
Trigger Window End for Multiple Lanes
m
1 - 255
B
Defines the maximum distance needed to
cover two or more lanes.
Direction Change Distance
m
0 - 255
B
Defines a distance after which the direction of
vehicles is opposite.
Driving direction of the first lane is defined by
bit 5 (Speed Behind) of parameter 2.
Speed Verification distance
cm
0 - 255
B
Defines a distance where trigger will occur (if
not zero). (See Chapter 4.1.2)
LaserControl
48
W
50
51
52
B
B
B
53
B
Select laser in use; 0 = Beam B, 1 = Beam A,
2 = toggle between laser. This selection
applies in operation modes 0 and 1.
Ground distance. Ground level distance
measured with the sensor. Applies when snow
measurement is activated.
Control Byte 4 (See Chapter 6.7)
Control Byte 5 (See Chapter 6.8)
Control Byte 6. Consult manufacturer for
changes. Otherwise ignore (keep default value)
Sensor Orientation
cm
0,1,2
2
0 - 38000
0
128
0,1,2
1
Select sensor orientation: 0 = detection on
automatic setting of measurement window, 1 =
laser sticker up, 2 = laser sticker down.
Note: The parameters return to values saved into the permanent memory at power-ON.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 32/36
____________________________________________________________________________________
6.4 Control Byte 1
MSB
No.
7
LSB
6
5
4
3
2
1
0
Value
x
1
2
x
2
x
4
8
16
x
x
x
32
x
64
x
128
Note
Control Byte 1 bits
Profile Measurement
After triggering sensor sends binary distance
results as long as vehicle is detected
Trigger Out Window
Trigger window operates inverted
Reserved
Reserved
HW input Disable
Disables trigger input
Speed Behind
The sensor measures speed for departing
targets
Print Speed Data (Development use only)
Enables output of detailed speed
measurement report
NOTE! This bit is cleared at start-up and
reset of the sensor
Vehicle Size
Enables output of vehicle size.
6.5 Control Byte 2
MSB
No.
7
LSB
6
5
4
3
2
1
0
Value
x
1
2
3
x
x
x
x
x
x
x
4
8
16
32
64
128
Note
Control Byte 2 bits
Pointer Enable
Echo On
Sensor echoes serial commands
Decimal Enable
Adds one digit to the measurement result to
show 1/10 mm value
Amplitude Output Enable
Disables trigger input
Reserved
Fast Key Disable
Disables single key commands, like <space>
and T
Reserved
Reserved
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 33/36
____________________________________________________________________________________
6.6 Control Byte 3
MSB
No.
7
LSB
6
5
4
3
2
1
0
Value
x
1
2
26
x
x
4
x
8
x
16
32
64
128
x
x
x
Note
Control Byte 3 bits
Reserved
Disable OK Text
Disables once-a-minute given OK text in
modes 7 and 12
Speed Output
0 = km/h
1 = MPH
Note! Does not affect parameter 37 (Speed
Limit [km/h]) or QSPEED value.
Show Histogram
Sensor will output all detected speed values.
Reserved
Reserved
Reserved
Enable Vehicle Height
Enables height output in mode 6 and 7, when
also bit 7 of parameter 2 is set.
6.7 Control Byte 4
MSB
No.
7
LSB
6
5
4
3
2
1
0
Value
50
x
x
x
x
x
x
x
x
1
2
4
8
16
32
64
128
Note
Control Byte 4 bits
Trigger Time Output
Time from the beginning of the measurement
session is given
Trigger Time Interval
Time between triggering moments is given
Trigger Occupancy Time
Time how long the vehicle has been in
Triggering window is given
Traffic Flow
Calculation is based on previous 10 minutes
and it is updated in 1 minute interval.
Traffic information (count, flow [cars/hour]
and average speed [km/h or mph]) is given.
Count Output
Number of the triggering is given
Reserved
CSV output
Speed measurement results are given in
Comma separated value format.
CRC Algorithm Enable
The sensor calculates 16 bit CRC value for
each output line. It is sent in two bytes after
<cr><lf>. Please ask the equation from
Noptel Oy.
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 34/36
____________________________________________________________________________________
6.8 Control Byte 5
MSB
No.
7
LSB
6
5
4
3
2
1
0
Value
x
1
51
x
x
x
x
x
x
x
2
4
8
16
32
64
128
Note
Control Byte 5 bits
Separation between vehicles
Time between vehicles is given
Show Violation Only
Shows results only for speeding cases. Data
to be outputted is collected as string and
printed out after vehicle has passed. By
enabling this byte and setting speed limit to 0
sensor prints vehicle information after it has
passed.
Output Binary Frame
Measure Snow Fall
Show Speed Error byte
Speed Verification Digital IO Control
Reserved
TriggerFromBeamA
Select the trigger beam for approaching
vehicles. Value 0 sets trigger output to beam
B (QSpeed detection moment, when speed
limit is set with parameters 37 and 36). Value
1 sets trigger output to beam A (cars
detection for approaching vehicles)
Notes
____________________________________________________________________________________
Speeder X1 and X2 Configuration and API Guide
Page 35/36
Speeder X1 and X2
Laser Radar
Configuration and API Guide
Contact information
Noptel Oy
Address:
Tel.:
Fax:
E-mail:
Technical support:
Teknologiantie 2
FI-90590 Oulu
Finland
+358 40 181 4351
+358 8 556 4101
[email protected]
see our Web site: www.noptel.fi