目录
第 1 章 绪论.......................................................................................................................2
1.1 选题的目的与意义................................................................................................2
1.2 本课题在国内外的发展现状................................................................................2
1.3 本课题要解决的主要问题....................................................................................3
第 2 章 系统设计方案.......................................................................................................5
2.1 方案选择论证........................................................................................................5
2.2 AT89S52 单片机简介.............................................................................................5
第 3 章 热释电红外技术概述.........................................................................................11
3.1 热释电传感器的红外辐射与红外探测的原理结构..........................................11
3.2 红外测温原理......................................................................................................12
3.3 热释红外传感器的结构......................................................................................12
3.4 菲涅尔透镜..........................................................................................................15
3.5 热释电红外感应模块电气参数..........................................................................16
3.6 热释电红外感应模块功能特点及使用说明......................................................16
第 4 章 系统硬件电路设计.............................................................................................19
4.1 总体设计思路......................................................................................................19
4.2 具体电路模块设计..............................................................................................20
4.2.1 单片机最小系统电路...............................................................................20
4.2.2 热释电红外感应模块电路.......................................................................20
4.2.3 放大电路的设计.......................................................................................21
4.2.4 声音报警器的设计...................................................................................21
4.2.5 LED 报警电路............................................................................................22
4.2.6 报警温度设定按键电路...........................................................................22
第 5 章 系统调试.............................................................................................................24
结束语.................................................................................................................................27
致谢.....................................................................................................................................28
参考文献.............................................................................................................................29
附录一 红外防盗报警器电路图.....................................................................................30
附录二 红外防盗报警器 PCB 图.....................................................................................31
附录三 英文文献翻译.....................................................................................................32
