Metal Detector

Siti Norazian, Mohd Asri (2006) Metal Detector. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Nowadays, there are a lot of criminal incidents such as burglary. So, from this problem, a device is developed to detect such of the incident. This device is put in front of a house to detect the burglar. This device is called Metal Detector which is build from the combination of frequency, oscillator, filter, mixer, amplifier and other electronic components. This project is developed to detect metal like iron. nails, keys and coins which lost. The first step is to design the control circuit to detect different wave which has a different frequency. It is based on electromagnetic field which is produced by coil entwined at metal substance. It uses 'superheterodyne' principle where two different frequency waves are combined to produce one signal. This signal is transmitted to speaker by filter and amplifier.

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