微处理器的选择.................................................................................................................................................................................................. 1
1.2.3 传感器的选择............................................................................................................................................................................................ 1
$0控制模块的硬件构成$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$0
控制系统的主要硬件电路$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$0
2.2.1 AT89S52 单片机....................................................................................................................................................................................... 1
2.2.2 光线强度检测模块...................................................................................................................................................................................... 3
2.2.3 单片机对 ADC0832 的控制......................................................................................................................................................................... 4
热释电红外人体检测模块电路.............................................................................................................................................................................. 5
2.2.5 按键管理模块电路...................................................................................................................................................................................... 6
........................................................................................................................................................................................................................ 6
图 4 按键模块原理图........................................................................................................................................................................................... 6
2.2.6 超时报警电路............................................................................................................................................................................................ 6
2.2.7 系统的其他模块......................................................................................................................................................................................... 7
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3控制模块软件设计与开发$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$2
3.1.1 系统自检初始化......................................................................................................................................................................................... 8
定时中断处理..................................................................................................................................................................................................... 8
3.1.3 ADC0832 数据读取程序流程....................................................................................................................................................................... 9
