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Published on Aug 21, 2023


This project is developed for the users to detect the speed of a car and to stop if it exceeds the particular speed.

It consists of two transmitters and two receivers. One transmitter is connected first and a receiver is fixed just opposite to the transmitter. The other transmitter is connected at the same side but something away from the first transmitter.

The second receiver is connected just opposite the second transmitter.

When the vehicle passes the first transmitting and receiving unit, it senses that one vehicle is crossing. When it crosses the second unit, it also senses.

The microcontroller unit calculates the speed=displacement/time taken. If the speed exceeds the particular level, the buzzer produces sound.

The administrator can set the speed limit of the device using the key pad. According to the settings, the device senses the speed of the vehicles

This project is very much used in traffic controller. It is very accurate and cost effective.

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