1.1 选题背景及意义 ................................................................................................................1
1.2 本文所做的工作 ................................................................................................................1
第 2 章 火灾自动报警系统的工作原理 .........................................................................................2
2.1 系统总体功能概述 ............................................................................................................2
2.2 火灾报警系统的类型 ........................................................................................................2
2.3 火灾探测器的原理 ............................................................................................................3
第 3 章 系统硬件设计 .....................................................................................................................5
3.1 核心芯片选择 ....................................................................................................................5
3.2 单片机外围接口电路 ........................................................................................................8
3.3 信号处理电路 ....................................................................................................................9
3.4 A/D 转换模块 ..................................................................................................................10
3.5 声音报警电路 ..................................................................................................................11
3.6 数码管显示电路 ..............................................................................................................12
3.7 状态指示灯及控制键电路 ..............................................................................................13
3.8 报警器故障自诊断 ..........................................................................................................14
第 4 章 系统软件设计 ...................................................................................................................15
4.1 主程序流程图 ..................................................................................................................15
4.2 主程序初始化流程图 ......................................................................................................16
4.3 滤波子程序 ......................................................................................................................16
4.4 线性化子程序 ..................................................................................................................17
4.5 报警子程序 ......................................................................................................................19
4.6 键盘处理子程序 ..............................................................................................................21
结论 ...................................................................................................................................................22
致谢 ...................................................................................................................................................23
参考文献 ...........................................................................................................................................24
