目录
1 绪论 ........................................................................................................................1
1.1 设计目的 ........................................................................................................1
1.2 设计内容 ........................................................................................................3
2 系统设计方案 ..........................................................................................................4
2.1 系统组成 ........................................................................................................4
2.2 系统工作原理 ................................................................................................4
3 系统硬件电路设计 ...................................................................................................6
3.1 AT89C51 单片机最小系统设计 ...................................................................6
3.2 其他硬件模块电路设计 ................................................................................8
3.2.1 传感器模块电路设计 .......................................................................8
3.2.2 报警模块电路设计 ...........................................................................9
3.2.4 A/D 转换器电路设计 .....................................................................10
3.2.5 整体电路设计 ................................................................................12
4 系统软件程序设计 .................................................................................................13
4.1 主程序设计 .................................................................................................13
4.2 其他子程序设计 .........................................................................................14
4.2.1 延时子程序 ............................................................................................14
4.2.2 按键控制子程序 ....................................................................................14
4.2.3 报警子程序 .............................................................................................14
4.2.4 A/D 转化模块子程序 .............................................................................15
4.2.5 警情检测子程序 .....................................................................................16
5 总结 ......................................................................................................................18
致谢 ............................................................................................................................19
参考文献 ....................................................................................................................20
