Abstract
In this paper, a multi-purpose alarm system for dormitory based on control conducted by AVR single-chip microcomputer is designed and produced, which aims at potential safety risks existing in dormitories of colleges and universities at present. This system uses multiple sensors to realize detection of human body, smoke, access of people and valuables, after which signal will be processed and AVR single-chip microcomputer will then be used to realize automatic control. Host computer receives information from slave computer and then realize long-distance and real-time monitoring. Test result indicates that this system functions well and can realize security of student dormitories if applied, which can raise audible and visual alarm in case of abnormal situation and realize cancel of alarm through entering password on a keyboard.
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