模拟电子技术课程设计说明书红外线报警器系、部：电信系学生姓名：陈颖之指导教师：贾雅琼职称讲师专业：电气工程及其自动化班级：1002完成时间：2012年5月1摘要红外线报警器一般用作防盗报警，是一种最常见的报警装置，该装置由直流稳压电源，红外线发射部分、红外线接收部分、555定时器以及蜂鸣器组成，可通过发射的红外线被物体阻挡时，红外线接受部分无法接收到红外线时产生信号，利用光电开关特性以及555定时器控制蜂鸣器进行报警并控制其报警时长。关键词光电开关，直流稳压电源，555延时芯片ABSTRACTInfraredalarmsystemcommonlyusedforanti-theftalarm,isoneofthemostcommonalarmdevice,comprisingaDCpowersupply,infraredemissionpart,infraredreceivingportion,555timerandabuzzer,bytransmittinginfraredobjectwasblocked,theinfraredreceivingportiontobereceivesinfraredsignalgeneratedbythephotoelectricswitchcharacteristics,aswellas555timercontrolbuzzeralarmandcontrolthealarmtimeKeywordsthephotoelectricswitch；555timer；buzzer目录21总体设计方案与要求··································41.1设计任务的功能要求说明·························41.2设计课题总体方案介绍及工作原理说明·············42设计电路及其仿真分析································52.1设计电路图·····································52.2设计电路的仿真结果·····························63硬件电路各部分电路设计······························73.1硬件电路图及各模块功能简要介绍·················83.2PCB图········································83.3元器件清单·····································934系统的调试及性能分析································104.1系统的调试·····································104.2性能分析·······································105设计结论及体会······································106参考文献············································107致谢···········································118附录···········································111总体设计方案与要求1.1设计课题任务4设计一个红外线防盗报警器。要求如果有人进入监视区域，立即报警，报警时长为30秒。1.2.1设计课题总体方案介绍该装置以直流稳压电源和555定时器为核心，采用光电开关作为发射和接受装置，利用光电开关的特性和555定时器来控制蜂鸣器工作，在光电开关被挡住时输出电平信号来使蜂鸣器报警。系统框图如图1.1所示。220v交流电源直流稳压电源光电开关555延时芯片蜂鸣器1.2.2总体方案说明该装置接通电源后，220V交流电源经过直流稳压部分的处理之后，变为5V左右的报警延时部分的输入电源。当光电开关接通，即没有人经过时，光电开关输出高电平进入555延时芯片，555延时芯片输出低电平到蜂鸣器，蜂鸣器不工作；当光电开关断开，即有人挡住时，光电开关输出低电平进去555延时芯片。555延时芯片输出到蜂鸣器，蜂鸣器延时报警。2设计电路及其仿真2.1设计电路图设计其原理电路图：图2.1。5图2.1J1：经过变压器之后的交流电源R：电阻U1：整流桥D2：二极管J2：光电开关JP1：555延时芯片U2：蜂鸣器U1：LM317T稳压芯片C：电容2.2设计电路图的仿真结果在Multisim中编辑出电路图（见图2.2），在红外线发射部分中加入一个开关来控制红外...