Laser Range Meter

Syed Amir Redha, Syed Mohmad (2011) Laser Range Meter. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

This project is about laser length meter. Transmitter circuit emits laser pulses with a defined wavelength and frequency. The laser beam is reflected off the target and back to the receiver unit at the speed of light. The returning wavelengths and light pulses change in relationship to the ones sent out by the meter. The difference between the two signals is proportional to the distance and the target. A comparator circuit will compare the different wavelength and frequency between transmitter circuit and reflected signal at receiver circuit. Different distance will give different output voltage at comparator circuit. Microcontroller circuits will the process analog data from comparator circuit to digital data and manipulate the data to display at LCD for convenience reading distance.

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