河南机电高等专科学校毕业设计/论文近年来随着科技的飞速发展，单片机的应用正在不断地走向深入，同时带动传统控制检测日新月异更新。十字路口车辆穿梭，行人熙攘，车行车道，人行人道，有条不紊。那么靠什么来实现这井然秩序呢？靠的是交通信号灯的自动指挥系统。交通信号灯控制方式很多。本系统采用MSC-51系列テ?Intel8031和可编程并行I/O接口芯片8255A为中心器件来设计交通灯控制器，实现了能根据实际车流量通过8031芯片的P1口设置红、绿灯燃亮时间的功能；为了系统稳定可靠采用了MAX629“看门狗”芯片，避免了系统因为死机而停止工作的情况发生；显示时间直接通过8255的PA、PB口输出；交通灯信号通过PC口输出；交通灯的点亮采用VT双向晶闸管来控制，直接采用220V交流电源驱动，系统实用性强、操作简单、扩展性强。在实时检测和自动控制的单片机应用系统中，单片机往往是作为一个核心部件来使用，仅单片机方面知识是不够的，还应根据具体硬件结构，以及针对具体应用对象特点的软件结合，加以完善。关键词：单片机交通灯控制器设计实现ABSTRACTInrecentyearsalongwithscienceandtechnologydevelopfast,theapplicationofsingleflatmachineismovingtowardsthoroughcontinuously,atthesametimedrivetraditionalcontroldetectiondaythebenefitofnewmoonupdate.Intheonlyflatmachineapplicationsystemoftheautomaticcontrolanddetectionofrealtime,onlyflatmachineisoftentouseasakeyparts,onlysingleflatmachineaspectknowledgeisinsufficient,returnshouldbasisspecificlyhardwarestructure,aswellasaimatthesoftwarethatappliesobjectcharacteristicspecificlycombination,perfect.Crossroadsvehiclewearcomb,pedestrianXiRang,turntobeallrightlane,personpedestriansays,methodically.Doyouleanwhattorealizethisorderlyorder?Whatleanisthattheautomaticcommandsystemoftrafficsignallamp.Trafficsignallampcontrolwayismany.ThissystemadoptsMSC-51seriesonlyflatmachineIntel8031withbutprogrammingparallelinterfacechip8255AofI/Oiscentraldevicethedesigncontroleroftrafficlights,haverealizedcanmeasureaccordingtoactualwagonflowtheP1installationbonusandgreenlightthatpassesthrough8031chipsburntolightthefunctionoftime;ForsystemstabilizereliablehaveadoptedMAX629thechip"doglooksafterthehouse",haveavoidedthatsystemstopsworkingconditionbecauseofhaltingtooccur;ShowthattimeisdirectlyexportedthroughPBandPAof8255;ThesignaloftrafficlightsisexportedthroughusuallyPCmouth;ThepointoftrafficlightslighttoadoptVTtwo-wayJingfloodgatepipecometocontrol,directlydrivewiththe1河南机电高等专科学校毕业设计/论文alternatingcurrentsourceof220V,practicalityisstrong,operatingissimple.Keywo