城市智能交通灯系统

沈阳航空工业学院北方科技学院毕业设计（论文）I摘要交通灯是各个国家管理交通的重要工具，是城市交通最重要的组成部分，对于疏导交通流量、提高道路通行能力，减少交通事故有明显效果。近年来随着科技的飞速发展，单片机的应用正在不断深入，同时带动传统控制检测技术日益更新。在实时检测和自动控制的单片机应用系统中，单片机往往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软硬件结合，加以完善。本设计就是以单片机为架构的智能交通灯系统。本系统由单片机系统、LED显示、交通灯演示系统组成。系统包括直行、左转、右转、以及基本的交通灯的功能。系统除基本交通灯功能外，还具有倒计时、时间设置、紧急情况处理、分时段调整信号灯的点亮时间以及根据具体情况手动控制等功能。关键词：AT89S52，交通灯，LED显示沈阳航空工业学院北方科技学院毕业设计（论文）IIAbstractThetrafficlightiseachnationalmanagementtransportationimportanttool.Isthemunicipaltransportationmostimportantconstituent.Regardingtheunblockingtrafficflow,sharpenstheroadcapacity.Thereductiontrafficaccidenthasthetangibleeffect.Inrecentyearsalongwithtechnicalrapiddevelopment，Monolithicintegratedcircuitapplicationunceasinglythorough，Simultaneouslyleadsthetraditionalcontrolexaminationtechnologytorenewdaybyday，inrealtimetestandInautomaticcontrolmonolithicintegratedcircuitapplicationsystem.Themonolithicintegratedcircuitoftentookacorepartuses.Themonolithicintegratedcircuitaspectknowledgeisonlyinsufficient,Alsoshouldactaccordingtotheconcretehardwarearchitecturesoftwareandhardwareunion,improveandperfect.ThisdesignThisdesignthissystemismadeupofsingle-chipmicrocomputerhypophreniathissystemismadeupofsingle-chipmicrocomputerleddisplayingmoduleandTrafficlightssystem.Thesystemincludespavementlefttruningrighttruningandthebasictrafficlightsfunction.Exceptingthebasictrafficlightsfunctionitalsoincludescoutingimeinstallingemergencydisposalingspeechcluing,ledinformationdisplayingadjustingthelightingtimeoflightsbasedondifferenttimeandcontrollingwithhandinaccordancewithcircumstancesandsoon.Keywords:AT89S52,TRAFFICLIGHT,LEDDISPLAY沈阳航空工业学院北方科技学院毕业设计（论文）III目录1绪论...................................................................................................................................11.1引言.............................................................................................................................11.2单片机概述.................................................................................................................21.3芯片简介.....................................................................................................................21.3.1AT89S52芯片简介...............................................................................................21.3.2中断系统..............................................................................................................31.3.3AT89S52的引脚说明...........................................................................................31.3.48255芯片简介......................................................................................................41.4功能描述.....................................................................................................................52方案比较、设计与论证...................................................................................................62.1电源提供方案.............................................................................................................62.2显示界面方案.............................................................................................................62.3输入方案：.................................................................................................................62.4理论分析与计算..........................................................................................................72.4.1交通灯显示时序的理论分析与计算..................................................................72.4.2交通灯显示时间的理论分析与计算..................................................................82.5交通管理的方案论证..................................................................................................93硬件电路设计.................................................................................................................103.1硬件设计流程图........................................................................................................103.2交通灯控制电路设计...............................................................................................103.3倒计时显示电路设计...............................................................................................123.4中断电路设计...........................................................................................................123.5语音电路设计...........................................................................................................133.6智能交通灯系统的总设计.......................................................................................193.7系统工作原理...........................................................................................................193.8交通灯硬件线路总图...............................................................................................204系统软件程序设计.........................................................................................................214.1主程序流程图...........................................................................................................214.2通行规则如下...........................................................................................................234.3每秒钟的设定..........