Course#EENG491-M02 Group name: cavalier

Group members: Wang Liyuan 613230

Li Hengyi 611076 Shan Hao 611079

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Potential Market6 million car accidents each year in the

United States A person dies in a car accident every 12

minutes Car crashes cost each American more than

$1,000 a year .

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Control SystemFor we do not have a real car for our testing,

we have to use a model to demonstrate our idea. Here we choose a toy car as our model.

The toy car will stimulate some basic functions of our collision avoidance system .

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Main functionsInitially the toy car just keeps going forward

until it reaches the barrier.

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When the toy car comes near the barrier, the sensor will come up with an alarm signal which is regard as an interrupt for our microprocessor. After the interrupt the microprocessor will change its output. When the car’s remove controller received the new command, the car can change its path automatically.

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Whole system

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remote controller Most toy cars’ remote controller have 4

buttons to control the toy car for 4 directions, but our system is an automatic system we can use these buttons.

So we have to build the circuit of the remote controller

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remote controller

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Video of testing

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4 command for 4 directionsWe use 4 different commands to control the 4

directions of the toy car, here is the main truth table

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Microprocessor Design We write program to generate changing

outputs of P1.0 & P1.4. The values can be used for the command for controlling the toy car.

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Video of microprocessor’s design

Sensor When the toy car comes near the barrier, the

sensor will come up with an alarm signal which is regard as an interrupt for our microprocessor. After the interrupt the microprocessor will change its output. When the car’s remote controller received the new command, the car can change its path automatically.

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The video of the sensor’s testing

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Video of the testing of our whole system.

result

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Mathematical modelWe have come up with some mathematic

model to stimulate the real situation for cars. The following part will be our theory research on the collision avoidance system.

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Doppler effect

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The equation is V1=V-F/f*VT=S/V1

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At the end of our presentation we want to show our appreciation to Dr. Saito and other NYIT professors.

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