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1、摘要本系统主要介绍了以89C51单片机为核心的新交通控制控制系统的设计。这个系统采用手动控制,定时控制,实时控制。实时控制是交通控制中的一种较新颖且有效的方法,该方法应用最优控制理论中的控制思想,实时地控制当前绿灯时间,在保证交通安全的前提下最大限度地提高了交通效率。系统主要包括软件和硬件两个部分。硬件部分:CPU主控部分电路,交通灯信号的输出和驱动电路,车辆检测出入(包括违规车辆检测),时钟电路。CPU是整个交通灯信号控制机的核心部件,通过它来控制个电路以实现信号机的各种功能。交通信号输出电路是把主机的交通灯控制信号送驱动器,控制交通灯的状态。车辆检测输入
2、是将有无车辆和违规车辆的信号送入主机,产生相应的中断处理。时钟电路是为了显示车辆通行的剩余时间。软件部分主要是协助硬件完成各项功能。关键词:89C51,定时控制,实时控制,遥控,1IntelligentTrafficLightControlABSTRACTThesystemhasintroducedthatnewtrafficcenteringon89C51monolithicmachinecontrolssystematicdesignmainly.Thissystemusesthehandcontrol,timedcontrol,wirelessremo
3、tecontrolandreal-timecontrol.Thereal-timecontrolisinthetransportationcontrolonekindmorenovelalsoaneffectivemethod,inthismethodapplicationoptimumcontroltheorycontrolthought,thetendency,real-timecontrolsthecurrentgreenlighttime,maximumlimitenhancedthetransportationefficiencyinunderth
4、eguaranteetrafficsafetypremise.Thesystemmainlyincludessoftwareandthehardwaretwoparts.Hardwarepartial:TheCPUhostcontrolsthepartialelectriccircuits,thetrafficlightsignaloutputandtheactuationelectriccircuit,thevehiclesexaminationdifference(includingcontraryvehiclesexamination),keyboar
5、danddisplaycircuit,clockelectriccircuit,communicationcircuit,electronicpolicesystem.CPUistheentiretrafficlightsignalcontrolmachinecorepart,controlsanelectriccircuitthroughittorealizesemaphoreeachkindoffunction.Thetrafficsignaloutputcircuitisdeliversthemainenginetrafficlightcontrols
6、ignalthedriver,controlsthetrafficlightthecondition.Whetherthereisthevehiclesexaminationinputsendsinthevehiclesandthecontraryvehiclessignalthemainengine,hasthecorrespondinginterruptprocessing.Theclockelectriccircuitisfordemonstratethevehiclesgeneralsurplustime.Thecommunicationisthem
7、ainengineandthecentralsupervisorysystem,thestreetintersectionfoundationstandandthesignalactuationpartialcommunications.Thekeyboardinterposesthecontrolmodeandeachparametersmainly.Softwarearepartialmainlyisassiststhehardwaretocompleteeachfunction.KEYWORDS:89C51,Timedcontrol,Real-time
8、control,Remotecontrol,Emer