火灾报警系统与实现.docVIP

火灾报警系统设计与实现 系 别 信息工程系 专 业 班 级 学 号 姓 名 指导教师 负责教师 沈阳航空学2015年月摘 要 随着“信息时代”的到来，作为获取信息的手段传感器技术得到了的进步，其应用领域越来越广泛，对其要求越来越高，需求越来越迫切。因此，了解并掌握各类传感器的基本结构、工作原理及特性是非常重要的。本文利用单片机结合技术而开发设计了这一可燃气体敏感元件Abstract with the advent of information times, as a means of accessing information --sensor technology has been significant progress, its application field is more and more extensive, the requirement is more and more high, more and more urgent need.The sensor technology has become a national science and technology development level of one of the important symbols. Therefore, understanding and mastering of sensors structure, working principle and characteristic is very important.in this paper combined the technology of sensor and microcontroller developement and design of the fire alarm. In this paper, a MQ-2 type semiconductor resistor type smoke sensor,temperature sensor and STC89C51RC single chip as the core technology and electronic technology, designs a technology better smoke alarm. The selection of MQ-2 type semiconductor gas sensitive element smoke sensor smoke detection, which has high sensitivity, simple structure, quick response, strong anti-interferenceability, stable performance, intelligent, practical value is high, and the price is low, long service life.chooseSTC89C51RC single-chip microcomputer as main control chip of system,data acquisition, data processing, such as alarm function;choose DS18B20 temperature acquisition;selects the DS1302 clock chip realize timing function, system has the advantages of high speed, low power consumption, strong anti-jamming. In this paper, design of fire alarm system can realize sound and light alarm display, temperature, concentration, time display, alarm limit Settings, and other functions. Is a kind of simple structure, stable performance, easy to use, low cost, intelligent fire alarm system. Key word: Smog, alarm apparatus,STC89C51RC, sensor 目 录 1 绪 论 1 1.1 课题背景和研究的意义 1 1.2 火灾报警系统的发展历程和发展现状 2