智能火灾报警系统的设计论文.doc

目 录 摘 要 I Abstract II 前 言 III 1 总体方案设计 1 2系统原理及原理图 2 3 系统的硬件电路 3 3.1 控制模块设计 3 3.1.1 单片机选型 3 3.1.2单片机最小系统 4 3.2 检测电路设计 6 3.2.1 烟雾检测电路 6 3.2.2 温度检测电路设计 11 3.3 显示与报警电路 15 3.3.1显示 15 3.3.2 报警电路 16 3.4 按键控制及电源电路设计 16 4 系统主程序设计及流程图 18 4.1 主程序设计 18 4.2 滤波子程序设计 19 4.3 线性化处理子程序设计 19 4.4 报警子程序设计 20 4.5 控制按键设计子程序 21 5 硬件调试 22 结 论 23 致 谢 24 参考文献 25 附录1：总体原理图设计 26 附录2：元器件清单 27 附录3：PCB图 28 附录4：实物图 29 附录5：部分程序源代码 30 The design of intelligent fire alarm system Abstract With the advent of the information age as a means of access to information . sensor technology has been significant progress, and its applications more widely, its increasingly high demand, the demand for more and more urgent. Sensor technology has become the measure of a countrys level of development of science and technology an important symbol. Therefore, to understand and master the basic structure of the various types of sensors, the working principle and characteristics are very important.In order to increase awareness and understanding of the sensor, especially in.depth study of the smoke sensor and its usage and purpose, based on practical, widespread and typical design principles of the system. In this paper, the use of single.chip sensor technology combined with the development and design of the smoke control system. . In this thesis, smoke sensors and resistive core chip technology and combined with other electronic technology, design a technical level better smoke alarms.Which choice MQ.2.type semiconductor combustible gas sensors to detect smoke smoke sensor to achieve, with high sensitivity, fast response, anti.interference ability, etc., and inexpensive, long service life. Optional STC12C5410AD microcontroller, which integrates A / D conversion, hardware multiplier, hardware resources such as pulse width modulator with high.speed, low power consumption, super anti.jamming, etc., similar technology is currently higher cost products. Keywords：Smoke；Alarms；STC12C5410；Sensors 前 言 火灾”，是指在时间或空间上失