PAGE\*MERGEFORMAT56酒精心脉检测系统摘要在经济快速发展的阶段，车辆的数量剧增，随之而来交通事故的发生也越来越多。设计一款检测酒精和心率的装置显得很重要，该设计由STC89C52单片机电路、MQ-3型酒精传感器、独立按键电路、液晶电路、ADC0832模数转换、红外反射传感器ST188、蜂鸣器报警电路、放大电路、电源等组成。该设计通过传感器检测驾驶员的酒精浓度和心率，独立按键设定预定值，传送至单片机进行数据处理判断检测值是否超出预定值，超出的话警报器电路发出警报。当蜂鸣器发出警报时，说明该驾驶员属于饮酒驾驶。增加了交警对查酒驾的力度，提高了他们的工作效率，从而减少了交通事故发生的数目，保障了人们的生命财产安全。关键字：STC89C52单片机，MQ-3酒精传感器，红外反射传感器，交通事故。AbstractInthestageofrapideconomicdevelopment,thenumberofvehicleshasincreaseddramatically,followedbymoreandmoretrafficaccidents.Itisveryimportanttodesignadevicetodetectalcoholandheartrate.ThedesignconsistsofSTC89C52singlechipcircuit,MQ-3alcoholsensor,independentkeycircuit,LCDcircuit,ADC0832A/Dconversion,infraredreflectionsensorST188,buzzeralarmcircuit,amplificationcircuit,powersupply,etc.Thedesigndetectsthedriver'salcoholconcentrationandheartratethroughthesensor,setsthepresetvaluebytheindependentkey,andtransmitsittothesinglechipmicrocomputerfordataprocessingtojudgewhetherthedetectionvalueexceedsthepresetvalue.Ifitexceedsthepresetvalue,thealarmcircuitwillgiveanalarm.Whenthebuzzergivesanalarm,itindicatesthatthedriverbelongstodrinkingdriving.Itincreasesthestrengthoftrafficpolicetocheckalcoholdriving,improvestheirworkefficiency,reducesthenumberoftrafficaccidents,andensurespeople'slifeandpropertysafety.Keywords:STC89C52singlechipmicrocomputer,MQ-3alcoholsensor,infraredreflectionsensor,trafficaccident.目录TOC\o"1-3"\h\uHYPERLINK\l"_Toc6643"摘要PAGEREF_Toc66431HYPERLINK\l"_Toc22422"AbstractPAGEREF_Toc224222HYPERLINK\l"_Toc18471"第1章绪论PAGEREF_Toc184714HYPERLINK\l"_Toc9074"1.1课题的背景PAGEREF_Toc90744HYPERLINK\l"_Toc20043"1.2酒精浓度和心脉检测的意义PAGEREF_Toc200435HYPERLINK\l"_Toc3206"第2章系统方案PAGEREF_Toc32066HYPERLINK\l"_Toc30384"2.1主控制芯片的选取方案PAGEREF_Toc303846HYPERLINK\l"_Toc26125"2.2元器件选择PAGEREF_Toc261256HYPERLINK\l"_Toc30998"2.2.1主控制芯片的选取方案PAGEREF_Toc309986HYPERLINK\l"_Toc7310"2.2.2独立按键的选取方案PAGEREF_Toc73107HYPERLINK\l"_Toc