iot poly engineering 2-2 drill october 20, 2010 1.a device that changes a message into a form that...
TRANSCRIPT
IOT
POLY ENGINEERING2-2
Drill October 20, 2010
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:
IOT
POLY ENGINEERING2-2
Terms
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:
IOT
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:
Terms
IOT
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:
Terms
IOT
POLY ENGINEERING2-1
ASSIGNMENT 3
AN EXAMPLE FOLLOWS (for the radio)
Using what you created as a solution for ASSIGNMENT 2, now add the following:
1. Description of any non-obvious components (particularly encoder, transmitter, and decoder, as in the radio example ahead).
2. A sketch of the system components.
Radio: DETAILS
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)
ASSIGNMENT 3 – Example
IOT
POLY ENGINEERING2-2
Radio:
Sine wave contains no information. We need to modulate (vary) it.
Problem:
ASSIGNMENT 3 – Example
IOT
POLY ENGINEERING2-2
Radio:
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
ASSIGNMENT 3 – Example
IOT
POLY ENGINEERING2-2
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
YOU NEED TO KNOW THESE
IOT
POLY ENGINEERING
Radio:
Goal: Inform Persuade Entertain Control Manage Educate
Source Encoder TransmitterDecoder
Receiver
Destination
ASSIGNMENT 3 – Example
IOT
POLY ENGINEERING2-2
– Assignment should be set up similar to our example.
– Also, include a labeled diagram.
ASSIGNMENT 3 – REMINDER
– Print Graphic Communication Visual, lingual messages that include printed media
– Photographic Communication Using photographs, slides, or motion pictures to
communicate a message– Telecommunications
Communicating over a distance– Technical Graphic Communication
Specific information about a product or its partsSize and shape, how to install, adjust, operate, maintain,
or assemble a device
Classes of Communication TechnologyDescriptions
1. Print Graphic CommunicationNewspaper, poster, brochure, billboard
2. Photographic CommunicationPhotographs, slides, motion pictures
3. TelecommunicationRadio and t.v. broadcasts, computers, mobile and satellite
4. Technical Graphic CommunicationEngineering drawings (sketches, drafting, CAD)
Classes of Communication TechnologyExamples
Telephone HeadphonesBook ComputerVideotape Remote ControlDVD PaintingMagazine CameraPhotograph Comic StripNewspaper Billboard
312,32,3121
333221,21,2
1. Print Graphic Communication 2. Photographic Communication 3. Telecommunications4. Technical Graphic Communication
Matching Classes
– Major Processes:• Relief
– A modeled work that is raised (or lowered) from a flat background.
– Cuneiform by the Sumerians ~6000 years ago.
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Communication Technology
Low Relief High Relief Cuneiform
– Major Processes:• Relief
– A modeled work that is raised (or lowered) from a flat background.
– Cuneiform by the Sumerians ~6000 years ago. – Wood block printing ~200 C.E.– Movable type printing ~1040 C.E. (Gutenberg ~1450)– Rotary printing press ~1843
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Communication Technology
– Major Processes:• Relief
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Communication Technology
By 593 A.D., the first printing press was invented in China, and the first printed newspaper was available in Beijing in 700 A.D. It was a woodblock printing. And the Diamond Sutra, the earliest known complete woodblock printed book with illustrations was printed in China in 868 A.D. And Chinese printer Bi Sheng invented movable type in 1041 A.D. in China.
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Intaglio (in-tal-yo)
1. Depressions cut into printing plate
2. The plate is covered in ink
3. Excess ink is removed from surface
4. Paper placed on plate and compressed
5. Paper is removed and ink has been transferred
– Major Processes:• Intaglio
Communication Technology
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on – Major Processes:
• Lithography (offset printing) ~1796– The source and destination are not on raised surfaces– Grease and water do not readily mix– A chemical process– Most modern books and newspapers
Communication Technology
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on • Screen Printing (~1000 C.E., China; 1907 England)
– Mainly billboards, package labels, fabric designs– Uses a woven mesh (a screen) to support an ink
blocking stencil. – The stencil forms open areas of mesh that transfer ink
as a sharp-edged image onto a substrate. – A roller or squeegee is moved across the screen
stencil forcing or pumping ink past the threads of the woven mesh in the open areas.
• Electrostatic (1938 / 1960s)– Photocopier, Laser Printer– Opposite charges attract
• Ink Jet (1980s)– Use a series of nozzles to spray ink directly on paper
Communication Technology
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• Photographic Communication – The process of using photographs to communicate a
message– Photography – capturing light on a light-sensitive
material such as film or electronic sensor– As a usable process, 1820s– Includes photographs, slides, and motion pictures
Communication Technology
Tele
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• Telecommunication– Communicating over a distance
Tele – Greek, “far off” Communicare – Latin, “to share”– Rely on the principles of electricity and magnetism – 2 types:
• Hardwired systems (telephone, cable, fiber-optic)• Broadcast systems (radio and t.v., mobile phones)
– Point-to-point: • One transmitter and one receiver
– Broadcast:• One powerful transmitter to numerous receivers
Communication Technology
Tele
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– Smoke signals and drums
– Chains of beacons (Middle Ages)• Navigation signals• Enemy troops approaching
– Homing pigeons • Carrier pigeons used as early as 1150 in Baghdad• Olympic victors, Greece; Stock options, Europe
Communication Technology
– Smoke signals and drums– Chains of beacons (Middle Ages)
• Navigation signals• Enemy troops approaching
– Homing pigeons • Carrier pigeons used as early as 1150 in Baghdad• Olympic victors, Greece; Stock options, Europe
– Optical telegraph (semaphore, 1792, France)• Towers with pivoting shutters• Information encoded by the position of the
mechanical elements
Tele
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Communication Technology
Tele
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– Telegraph (mid 1830s)• First instrument used to send messages by means of wires
and electric current• A device interrupts the flow of a current through a wire• Uses shorter and longer bursts of current to represent
letters• Device at receiving end converted electrical signal into
clicks• Operator/mechanical printer converted clicks into words• Telegram – wires over land• Cable – wires under water
– Telephone (1876 – Bell and Gray)• Greek: tele – far, phone – sound
Communication Technology
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–Broadcast• Radio (1893 – Tesla, 1901 – Marconi)• Television (1925)
– Greek: tele – far, Latin: visio – seeing – 4 main parts (cathode ray tube)– Electron gun fires 3 beams – Steering coils move electron beam across screen – Phosphorus screen has over 200,000 pixels– Glass tube holds it all together– Signals are broadcasted like radio signals
Communication Technology
– Computers– Internet– Cellular– Local Area Networks– Satellite Communication
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Communication Technology
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Communication Technology
–Engineering Drawing / Technical Illustration• Communicates specific information
– Size and shape– How parts are assembled– How to install, operate, adjust, maintain a
device• Hand methods
– Sketching– Drafting
• Computer methods– CAD (AutoCAD, Sketchup, Inventor,
ProEngineer, etc.)
– Create a PowerPoint presentation that documents the history of the development of the television, internet, and GPS. A few tips for making good presentations follow. Include pictures, references, and put everything into your own words! This assignment can be e-mailed to the course facilitator. If you cannot get access to Microsoft PowerPoint (and you can at school at least), download Open Office at www.openoffice.org. Te
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ASSIGNMENT 4