仰恩大学毕业设计（论文）PAGE26摘要这个红外声控报警系统是由中央控制器、红外传感器、声控传感器、报警器及键盘部分组成。控制器采用单片机AT89C52,红外传感部分采用红外发射接收一体化的光电传感器TCRT5000，声控传感部分采用驻极体话筒，扬声器和发光二极管作为报警设备。单片机通过红外传感部分和声控传感部分的传来的信号的变化来判断是否有外来者，如有则通过扬声器或者发给二极管来报警；红外传感器是通过发射管发射红外线到接收管，两个元件之间通过红外线进行连接，当有物体挡在中间时，便把电平的变化传给单片机；同理，声控传感器是把声音信号转换为电信号然后传送给单片机；键盘是用来设置报警触发的条件。关键词：单片机；汇编语言；红外传感器；声控传感器；AT89C52AbstractTheinfraredvoicealarmsystemiscomposedofacentralcontroller,infraredsensors,voice-activatedsensors,alarmdevicesandkeyboardparts.ControllerusingmicrocontrollerAT89C52,infraredsensingpartoftheintegrationofinfraredtransmittingandreceivingelectro-opticalsensorsTCRT5000,voice-activatedsensorpartoftheuseofelectretmicrophone,speakersandlight-emittingdiodesasthealarmequipment.Microcontrollerthroughtheinfraredsensorpartandthevoice-activatedsensorpartofthecomingchangesinthesignaltodeterminewhetherthereareoutsiders,ifsentthroughthespeakersorthediodetothepolice;infraredsensors,infraredemissionthroughthelaunchtubetothereceivingtube,twobetweenelementsofaconnectingviainfrared,whenthereareobjectsstandinthemiddle,theythenpassonthechangesinlevelmicrocontroller;Similarly,voice-activatedsensorisconvertedintoelectricalsignalsintoacousticsignalsandthentransmittedtothemicrocontroller;keyboardisusedtosetthealarmtriggerconditions.Keywords:microcontroller;assemblylanguage;infraredsensor;voice-activatedsensor;AT89C52目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc218839486"摘要PAGEREF_Toc218839486\hIHYPERLINK\l"_Toc218839487"AbstractPAGEREF_Toc218839487\hIIHYPERLINK\l"_Toc218839488"引言PAGEREF_Toc218839488\h11设计任务PAGEREF_Toc218839489\h2HYPERLINK\l"_Toc218839489"2方案论证与比较PAGEREF_Toc218839489\h2HYPERLINK\l"_Toc218839490"2系统硬件电路设计PAGEREF_Toc218839490\h3HYPERLINK\l"_Toc218839491"2.1复位电路PAGEREF_Toc218839491\h3HYPERLINK\l"_Toc218839492"2.2晶振电路PAGEREF_Toc218839492\h3HYPERLINK\l"_Toc218839493"2.3液晶显示电路设计PAGEREF_Toc218839493\h4HYPERLINK\l"_Toc218839