September 30, 2008
Match the statements with the correct term below:
1. A device that changes a message into a form that can
be transmitted
2. A device that sends a signal (i.e., encoded message)
3. A device that acquires a signal (i.e., encoded message)
4. A device that changes a coded message into an
understandable form
Decoder
Receiver
Encoder
Data
Transmitter
IOT
2-2
POLY ENGINEERING
Communication Technology
Match the statements with the correct term below:
1.
2.
3.
4.
Unorganized facts
Organized data
Information applied to a task
The sending and receiving of information
Communication
Information
Knowledge
Storage
Data
IOT
2-2
POLY ENGINEERING
Last Night’s Homework - REVIEW
Radio:
Goal: Inform
Persuade
Entertain
Control
Manage
Educate
Source: Sounds and Information
Encoder: Devices that convert sound and info into a modulated sine
wave (rapidly changing electric current in a wire)
Problem:
Sine wave contains no information.
We need to modulate (vary) it.
IOT
2-2
POLY ENGINEERING
Last Night’s Homework - REVIEW
Radio:
Encoder: Devices that convert sound and information into a
modulated sine wave
Pulse Modulation: turn the voltage (sine wave) on/off (Morse Code)
PM
Amplitude Modulation: vary the amplitude (peak-to-peak) voltage
AM
Frequency Modulation: vary the frequency (speed)
FM
IOT
2-2
POLY ENGINEERING
Last Night’s Homework - REVIEW
Radio:
Goal: Inform
Persuade
Entertain
Control
Manage
Educate
Source: Sounds and Information
Encoder: Devices convert sound and info into modulated sine waves
Transmitter: Antennas radiate the radio waves into air (medium)
Receiver: Antennas capture the radio waves from air
Decoder: Devices convert radio waves back into sounds and data
[Storage: Recording devices store sounds and data for playback]
[Retrieval: Stored data can be accessed and played]
IOT
Destination: Consumers’ ears and eyes
2-2
POLY ENGINEERING
Last Night’s Homework - REVIEW
Radio:
Goal: Inform
Persuade
Entertain
Control
Manage
Educate
Receiver
Decoder
Destination
Source Encoder Transmitter
Source: Sounds and Information
Encoder: Devices convert sound and info into modulated sine waves
Transmitter: Antennas radiate the radio waves into air (medium)
Receiver: Antennas capture the radio waves from air
Decoder: Devices convert radio waves back into sounds and info
Destination: Consumers’ ears and eyes
IOT
POLY ENGINEERING
Last Night’s Homework - REMINDER
LETTER THIS ASSIGNMENT
– Assignment should be set up similar to our example.
1. Classify the following as
– Also, include a labeled diagram.
2. Radio,
Cell Phone,
Internet,
GPS,of
Remote
1 InfoT.V.,
sheet
required
for each
the
Control
required 6 communication technologies:
3. Explain your classification.
Radio, T.V., Cell Phone, Internet, GPS, Remote
4. Analyze
Control the components of each of those 6
communication technologies, including the goal,
source, encoder, transmitter, receiver, decoder,
storage, retrieval, and destination.
IOT
2-2
POLY ENGINEERING
What it does:
• Identifies clues to water
• Characterizes rocks and soils
• Characterizes climate
Communication connections:
• Human to Machine
• Machine to Machine
Examples?
• Machine to Human
IOT
2-2
POLY ENGINEERING
Mars Rover Exploration
Objective:
Be the first team to successfully create your required 3
mechanisms and deposit them where required.
Players (4 or 5):
1 Classroom Exploration Robot (CER):
– No sight; only sound recognition and mobility
2 Mission Control (MC):
– Cannot see playing field, only a map
– Communicate to CER using specific directives
1 Communication Transmitter (CT):
– Transmit communication between CER and MC
[1 Spy Satellite (SS):]
2-2
[– Follow another team’s CT to ensure no cheating]
IOT
POLY ENGINEERING