Pages: 11 to 19
Tarief M. F. Elshafiey
This paper highlights the drawbacks of the current security systems for museums and banks. Accordingly, it introduces a design of an efficient and simple security system. The system is based on the fact that any human being radiates an infrared radiation. The proposed security system consists of antenna, Programmable System on Chip (PSoC), a Silicon Controlled Rectifier (SCR), and an alarm. If any human being approached valuable protected item, the antenna collects the infrared radiation and gives an analogue output equivalent to this radiation to the PSoC where it converts the analogue to a digital and compare it with the preset threshold level. If the level of the collected signal is greater than the threshold level, PSoC feeds logic level high (five volts) to the SCR. The output of the SCR will activate a load which could be a buzzer or Light Emitting Diode (LED) to give either a sound or a light alarm, respectively. The paper describes the design and implementation of the proximity alarm system. The system is tested and found to be working successfully. Advantages of the proposed security system are: immediate response, no apparent components, no interference with daily business, and all-the-time activation.