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Saturday, 25 January 2014

Hall Effect Sensor based non-contact tachometer for electrical motors speed measurement

       The purpose of this project is to design and construct a non-contact type of Tachometer. A tachometer(also called a revolution-counter, rev-counter, or RPM gauge) is an instrument that measures the rotation speed of a shaft or disk, as in a motor or other machine. Hall Effect sensors typically use a rotating target attached to a wheel, gearbox or motor. This target may contain magnets, or it may be a toothed wheel. The teeth on the wheel vary the flux density of a magnet inside the sensor head.

        This project consists of a Hall effect sensor connected to a microcontroller unit. The sensor signals from Hall effect sensor are sent to microcontroller for rpm measurement. These measured final values arc displayed on a LCD display connected to microcontroller.


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