Develop A Motor Speed System Using An Infrared Sensor

Azim Fauza , Md Khair (2008) Develop A Motor Speed System Using An Infrared Sensor. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of this project is to design or develop the motor speed sensor using infrared sensor. The concept of this project is quite similar with digital RPM meter for motor. The different between digital RPM meter with this project is the way to sense the rotation of motor. Normally, the digital RPM using mechanical sensor as their sensing element but this project that I want to develop is using infrared sensor as their sensing element. This special infrared sensor is not function as mechanical or other sensor but it is uses to detect the changing of black and white colors. Those black and white colors are creating on a motor shaft or motor pulley. That pulley is connected to the motor shaft and the infrared sensor will placed near the pulley. The rotation of motor will cause the changes of black and white colors. These changing of both colors produce the different signal or voltage and that voltage will compared using the comparator and other electronic devices to works with digital output. Then, that output signal will displays at seven segment display to shows the speed of motor in rotation per minute (RPM).

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