accident prevention-2nd present ion

8/8/2019 Accident Prevention-2nd Present Ion

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FPGA BASED CAR-

ACCIDENT PREVENTIONsponsored by ACTEL

Group Member: 1.Sunil Bharitkar

2.Mayur Devade

3.Deepak Dharmadhikari

Class : BE [ENTC]

Project Guide : Prof.S.C.Badwaik


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Automatic Car Parking

Anti-locking break system

Image Processing based system

Nighttime vehicle distance alarm system


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OUR PROJECT PRINCIPLE

Relative velocity of two moving elements can be

measured with the help of distance sensor


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Distance sensor

Non-Linear Voltage Output

Relationship to the distance

Easy interface with A-D converter

Range 10-80 cm

Average current consumption: 33

mA

Typical response time: 39 ms


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ARRANGEMENT OF BLOCKS ON

CONTROL CAR


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Conversion Time


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ADC INTERFACE


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Operate at 38 kHz frequency

Improved shielding againstelectrical field

disturbance

Low power consumption

High immunity against ambient

light

High power 38 kHz IR led


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ASSIGNMENTS OF IR LEDAND

SENSOR ON THE PCB


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Motor driving IC

Wide Supply-Voltage Range: 4.5 V

to 36V

High-Noise-Immunity

Output Current 1A Per Channel

provide bidirectional drive current


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INTERFACING L293D

WITH FPGA


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STEPPERANDDC MOTORS

Stepper motor: controls steering in case

obstacle from corner side

Selection: bipolar stepper motor

Dc motor: controls front-back movement


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APR6016

Sound playback IC

Advanced, non-volatile

Flash memory

Low power consumption

16 minutes of audiorecording and playback

alerts the car driver about

different situation


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LCDAND LED JHD 162A LCD

Display construction 16 characters*2

lines

Number of data line 8 bit parallel

LCD displays the distance between

two car

Led: indication of two different

situation of collision[ rare or front

side]


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PROGRAMMING

38kHz generation

Lcd interfacing

Stepper and DC motor functioning

Relative velocity measurement


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RELATIVE VELOCITY

MEASUREMENT ALGORITHM:

1.Display distance on LCD/seven segment.

2. CaptureADC reading at the time instance t1.

3. Capture ADC reading at the time instance t2.

Velocity=Distance/Time

Relative velocity=[d2-d1]/[t2-t1]


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LIMITATION

Deadlock

Limited range of distance sensor

Every time not superior than human brain


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REFERENCES [1] Science Daily, Avoiding Rear-end Collisions, Online available:

http://www.sciencedaily.com/videos/2008/0501-avoiding rear-end

collisions.htm, 2008.

[2]Yan Ying, Zhang Yuhui, Technique of Measuring Leading Vehicle

Distance Based on Digital Image Processing Theory, InternationalConference on Intelligent Computation Technology and

Automation,2010.

[3] Y. L. Murphey, J. Chen,J. Crossman, J. Zhang, P. Richardson,L.

Sieh, DepthFinder,AReal-time Depth Detection System forAidedDriving, Proceedings of the IEEE Intelligent Vehicles Symposium

2000,Dearborn (MI), USA, October 3-5, 2000.


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THANK YOU

accident prevention-2nd present ion

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