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Use of piezoelectric sensors for Vehicular speed measurement

Use of piezoelectric sensors for Vehicular speed measurement. The CoEP Astronomy Club. Background. Police abroad currently use Radar/ Laser based speed guns Prohibitively costly equipment More than $1000 for initial Laser based speed guns More than $200 for radar based speed guns. Our idea.

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Use of piezoelectric sensors for Vehicular speed measurement

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  1. Use of piezoelectric sensors for Vehicular speed measurement The CoEP Astronomy Club

  2. Background • Police abroad currently use Radar/ Laser based speed guns • Prohibitively costly equipment • More than $1000 for initial Laser based speed guns • More than $200 for radar based speed guns

  3. Our idea • Use piezoelectric sensors on the road (embedded or otherwise) to measure speed • Extremely low cost method • Can be connected to a camera to take images of over speeding cars

  4. Block Diagram Camera trigger Piezoelectric sensors Microcontroller Data Processing Digital readout

  5. Working • System measures time between pulses from the two sensors. • Distance between sensors is known, thus speed can be calculated.

  6. Advantages • Low cost (estimated to approx Rs. 2000) • Camera adaptability • Model shown will have camera attached to the system.

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