Home Alarm System Using Metal Detector

Edham Redza, Ahmad Foad (2006) Home Alarm System Using Metal Detector. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

The purpose of the Home Alarm System Using Metal Detector project is to demonstrate the use of a metal detector to detect any metal devices used by an intruder right before he has a chance to open the door or window. This will solve the problem with conventional sensors or detectors where the alarm only activates once the intruder has broken an entrance. To realize this project, extensive research and studies have been done on metal detector technology, PIC rnicrocontroller and its programming language and also alarm circuit. A Beat-Frequency Oscillator (BFO) type metal detector has been chosen for this project because by far, the circuit produces the characteristics and metal detection range that is required. To assure that the metal detector circuit functions accurately, certain calibration and tuning has also been done on the circuit. Meanwhile the usage of Microchip PIC 16F628 microcontroller assure that the alarm system have the capabilities to operate efficiently. The capabilities of the home alarm system is not only limited in detecting an intrusion attempt but also capable to perform certain features like set/resetting the alarm for a certain period of time, display the alarm status via LED, The alarm system alerting apparatus consist of siren, strobe light and buzzer. This thesis report provides an introductory background on the Metal Detector technology and an introduction on the thesis objective and the products available in the market. It further elaborates the design and implementation of the product. It reports the result of the product evaluation and makes recommendation for improvement. Finally, it concludes the thesis.

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