基于单片机的防酒驾系统

基于单片机的防酒驾系统Anti-AlcoholDrunkDriveSystemBasedonSCM学生姓名：所在学院：所在专业：指导教师：职称：所在单位：论文提交日期：论文答辩日期：学位授予单位：基于单片机的防酒驾系统目录摘要...........................................................................................................................................IAbstract.....................................................................................................................................II第1章绪论..............................................................................................................................11.1论文研究背景...........................................................................................................11.2国内外研究现状.......................................................................................................21.2.1国内酒精检测现状.........................................................................................21.2.2国外酒精检测现状.........................................................................................41.3本文研究内容...........................................................................................................4第2章硬件系统设计..............................................................................................................62.1系统功能设计...........................................................................................................62.2硬件系统概述...........................................................................................................62.3气体传感器...............................................................................................................72.4单片机控制系统.......................................................................................................92.5继电器模块.............................................................................................................102.6电源模块.................................................................................................................102.7硬件电路原理图.....................................................................................................113.7.1开发环境介绍...............................................................................................113.7.2硬件原理图设计...........................................................................................11第3章软件程序....................................................................................................................12第4章电路仿真....................................................................................................................14结论......................................................................................................................................17参考文献.....................................................................................................错误!未定义书签。攻读学士学位期间发表的论文和取得的科研成果.................................错误!未定义书签。致谢.........................................................................................................错误!未定义书签。基于单片机的防酒驾系统I摘要机动车的保有量屡创新高，是我们的道路安全问题面临严峻的考验，而很大一部分的道路安全事故都与酒后驾车有关。一方面交通管理部门加大道路酒驾巡查力度和处罚力度，另一方面通过媒体宣传，案例举例等方式让人们意识到酒后驾车的危害，使驾驶员从“不敢”酒后驾车逐渐向“不想”酒后驾车转变。但单纯的交通管理部门巡查和宣传，都不能从根本上杜绝酒驾事故的发生。因此从技术角度杜绝酒驾的发生弥补了单纯管理和宣传的缺陷。本论文采用AT89S52作为系统的中央处理单元，用于接收气体传感器的输入信号，以及控制继电器动作。选择MQ-3型气体传感器作为检测呼出气体中酒精含量的传感器，检测结果输入到单片机内。继电器的两个输出控制端一路连接酒驾报警灯，另一路连接发动机的打火装置。当呼出气体正常时继电器连接发动机打火装置，汽车可以启动；当呼出气体酒精含量超标时继电器则连接酒驾报警灯，车辆无法启动。论文进行了电路原理图设计及软件程序设计，最后通过Proteus软件的ISIS模块进行了电路仿真，验证了本设计合理，功能完备。关键词：防酒驾；气体传感器；电路设计；Proteus仿真基于单片机的防酒驾系统IIAbstractMotorvehicleownershipreachedrecordhigh,isourroadsafetyisfacingaseveretest,andalargepartoftheroadsafetyaccidentsareinvolvingadrunkdriver.Ontheonehand,thetrafficadministrativedepartmentoftheroaddrunkdrivinginspectioneffortsandpunishment.Ontheotherhandpublicitythroughthemedia,caseexamples,etc.letpeopleconsciousnesstothedrunkdrivinghazards,sothatthedriverfromnotdrunkdrivinggraduallytonotwanttodrunkdrivingchange.Butthetrafficmanagementdepartmentinspectionandpropaganda,cannotfundamentallyeliminatedrunkdrivingaccidents.Therefore,fromthepointofviewoftechnologytoeliminatedrunkdrivingoccurredtomakeupforthedefectsofsimplemanagementandpublicity.ThispaperusesAT89S52asthecentralprocessingunit,forreceivingtheinputsignalofthegassensor,andcontrolrelay.SelecttheMQ-3typegassensorisusedtodetectalcoholcontentinexhaledair,thedetectionresultsofinputtothemicrocontroller.Twooutputcontrolrelayendofaroadconnectingdrunkdrivingwarninglampignitiondevice,anotherwaytoconnecttheengine.Whennormalexhaledgasrelayisconnectedtotheengineignitionsystem,thecarcanstart;whenthebreathalcoholcontentexceedingtherelayisconnectedwiththewinewarninglampdriving,thevehiclecannotbestarted.Thecircuitprinciplediagramdesignandsoftwaredesign.Finally,throughtheProteusIsismodulewerecircuitsimulation,verifythedesignisreasonableandthefunctioniscomplete.Keywords:anti-drunkdriving;gassensor;circuitdesign;Proteussimulation第1章绪论1第1章绪论1.1论文研究背景我国经济迅猛发展的情况有目共睹，对人民生活水平的提高起到了巨大推动力的作用。汽车对于家庭来说已经不是可望而不可及之物，相反，驾车出行正在成为越来越多的人出行的首要选择。国家的机动车管理部门就统计数据得出结论，截止到去年年底，中国境内的机动车保有量超过两亿六千万辆，其中汽车就达到了一亿五千万多辆[1]。仅2014年一年，新注册的汽车就达两千多万辆