traffic wireless(eee499.blogpsot.com)
Post on 13-Apr-2017
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Project name:Traffic Guide using Wireless Radio
Prepared by:Diana QassamRazan GhannamHeyam Shamasneh
Supervised by:Dr. Allam Mousa
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Outlines Introduction.
FM modulation.
Practical Traffic Guide using Wireless Radio.
The Circuit diagram of the project.
PIC Microcontroller.
Flow chart.
Problems.
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IntroductionIntroduction
The aim of this project is to find a solution for traffic jam problem
traffic jam can be reduced by guiding drivers where the traffic jam is found. As a result driver could avoid going through the traffic jam and use another way if it is applicable.
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This idea should be applied as collaboration with the traffic police.
The information will be Transmit from access points using FM in MHz.
The guiding process tool will be the car radio which will be used as a receiver for the information that should guide the drivers.
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The system of traffic guide using wireless radioThe system of traffic guide using wireless radio
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FM modulationFM modulation
It is a form of modulation that represents information as variations in the frequency of a carrier wave.
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FM modulation FM modulation
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FM modulationFM modulation
Improved signal to noise ratio.
Smaller geographical interference between neighboring stations.
Less radiated power compared with AM.
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Practical Traffic Guide using Wireless Radio
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FM microphone: The MIC is used as a transmitter for guiding signal, it will transmit at (90)MHz.
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Practical Traffic Guide using Wireless Radio
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Mini radio: It is tuned on (90) MHz to receive the transmitted signal, it is used to give an indication to the PIC that there is a transmitted signal from FM MIC.
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Practical Traffic Guide using Wireless Radio
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Car radio: On the car radio we will save a free channel (channel 1) which has a frequency of (90) MHz.
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RelayRelayIt is a controllable switch works as the car radio buttons, it will be controlled by the
PIC.
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FeedbacksFeedbacks
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Car-radio feedbacks valuesCar-radio feedbacks values
SYSTEM
ON/OFF
RADIO/CD
MODE
ON/OFF
FEEDBACK
VOLTS
CD FEEDBACK
VOLTS
OFF ----0
1.5
ON RARIO 5 1.5
ON CD 5 5
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PIC MicrocontrollerPIC Microcontroller
PIC is the name for the microcontroller (MCU) family manufactured by Microchip
consisting of a microprocessor, I/O ports, timers and other internal integrated hardware
easy to program.
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PIC MicrocontrollerPIC Microcontroller
Our project uses the
Microchip product
(PIC16F877A) microcontroller.
The 16F877A is the core of the project that everything is completely done through it.
It consists of 40 pins.
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PIC signals and feedbacksPIC signals and feedbacks
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PICPIC (Programmable Interface Circuit)(Programmable Interface Circuit)
The PIC is Programmed to do the following if there is a guiding signal:
If the radio is OFF, the radio status will be changed to be ON.
If tape, the PIC will change its mode to the radio mode.
If the radio is tuned on any other channel, the PIC will change the channel to the police guiding channel.
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ProblemsProblems
Feedback signal from the radio.
Digital car radio.
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ConclusionsConclusions The system reduces the traffic jam by guiding the drivers
to places away from jams.
The system is cheap and easy to be implemented in any car
The use of the Microchip PIC microcontroller was appropriate because it provides a good control basis besides the ease of programming and using it.
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