IOT

POLY ENGINEERING2-2

September 30, 2008

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

Encoder

Receiver

Transmitter

Data

Match the statements with the correct term below:

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POLY ENGINEERING2-2

Communication

Knowledge

Information

Storage

1. Unorganized facts2. Organized data3. Information applied to a task4. The sending and receiving of information

Data

Match the statements with the correct term below:

Communication Technology

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POLY ENGINEERING2-2

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)

Sine wave contains no information. We need to modulate (vary) it.

Problem:

Last Night’s Homework - REVIEW

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POLY ENGINEERING2-2

Last Night’s Homework - REVIEWRadio:

Pulse Modulation: turn the voltage (sine wave) on/off (Morse Code)

Amplitude Modulation: vary the amplitude (peak-to-peak) voltage

Frequency Modulation: vary the frequency (speed)

PM

AM

FM

Encoder: Devices that convert sound and information into a modulated sine wave

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POLY ENGINEERING2-2

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]

Destination: Consumers’ ears and eyes

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POLY ENGINEERING

Last Night’s Homework - REVIEW

Radio:Goal: Inform Persuade Entertain Control Manage Educate

Source: Sounds and InformationEncoder: 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 airDecoder: Devices convert radio waves back into sounds and infoDestination: Consumers’ ears and eyes

Source Encoder TransmitterDecoder

Receiver

Destination

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POLY ENGINEERING2-2

– Assignment should be set up similar to our example.

– Also, include a labeled diagram.

LETTER THIS ASSIGNMENT1. Classify the following as

2. Radio, T.V., Cell Phone, Internet, GPS, Remote Control

3. Explain your classification.4. Analyze the components of each of those 6

communication technologies, including the goal, source, encoder, transmitter, receiver, decoder, storage, retrieval, and destination.

Last Night’s Homework - REMINDER

1 Info sheet required for each of the required 6 communication technologies: Radio, T.V., Cell Phone, Internet, GPS, Remote Control

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POLY ENGINEERING2-2

What it does:• Identifies clues to water

• Characterizes rocks and soils

• Characterizes climate

Communication connections:• Human to Machine

• Machine to Machine

• Machine to Human

Examples?

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):][– Follow another team’s CT to ensure no

cheating]

Players (4 or 5):

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POLY ENGINEERING

Objective:Be the first team to successfully create your required 3 mechanisms and deposit them where required.

Mars Rover Exploration

2-2