accident prevention-2nd present ion
TRANSCRIPT
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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