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Published on Aug 21, 2023

Abstract

Here in this project we are going to provide the indication to the user regarding the speed limit existence of the vehicle. This is achieved by the sensing of speed using the magnetic metal proximity sensor, which produce the output pulse for every revolution of the vehicle wheel.

This output pulse is in variable frequency. This output is captured by the microcontroller, according to the output frequency from the sensor, microcontroller will judge the speed of the vehicle.

Speed limit set by the user is converted to the fixed frequency internally by the microcontroller.

This micro will compare the fixed frequency and the variable frequency by the metal proximity sensor, if the condition [variable frequency greater than fixed frequency], micro will excite the buzzer relay and accelerator cable control motor relay. This control process will limit the vehicle not to exceed the set speed.

Eventually LCD module will display the current speed and speed limit of the vehicle





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