题目基于51单片机的家庭防盗防火报警系统目录内容摘要.............................................................................................................I第1章选题依据....................................................................................21.1前言..........................................................................................21.2防盗报警系统在国内外的发展.....................................................21.3防盗报警器的发展前景与趋势.....................................................31.4设计任务与要求.........................................................................3第2章系统方案设计.............................................................................52.1系统总体设计思路......................................................................52.2系统方案设计.............................................................................52.3传感器简介................................................................................62.3.1热释电红外传感器简介......................................................62.3.2热释电红外传感器电路图...................................................72.3.3被动式热释电红外探头的工作原理及特性...........................82.4MQ2烟雾传感器简介.................................................................82.551系列单片机的内部组成........................................................122.4.1STC89C52单片机的内部组成..........................................132.4.2STC89C52单片机引脚及功能..........................................142.6SIM900A短信模块简介...........................................................152.6.1GSM模块接口设计..........................................................18第3章硬件电路设计...........................................................................203.1电源电路设计...........................................................................203.2红外探测信号输入电路.............................................................213.3时钟电路的设计.......................................................................243.4复位电路的设计.......................................................................243.5烟雾检测电路设计...................................................................253.5.1传感器选型.....................................................................253.5.2LM393简介....................................................................25第4章软件设计..................................................................................284.1软件的程序实现...........................................................................284.2主程序工作流程图........................................................................284.3中断服务程序工作流程图...............................................................304.4报警电路流程图...........................................................................314.5信号采集电路流程图.....................................................................32第5章结论与展望...............................................................................34致谢....................................................................................................35参考文献..............................................................................................36附录A主要源程序代码...............................................
