毕业论文（设计）题目单片机交通控制灯设计与实现院系电子信息学院单片机交通控制灯设计与实现电力系统及其自动化专业【摘要】交通红绿灯是建设在各个要塞路口的系统，用于指挥人和车安全有序的通过十字路口，是保证道路畅通的重要手段；随着我经济的快速发展，物流业的快速发展，车流量不断增加；导致交通堵塞成为人们畅通出行的主要问题。因此开发出智能、可靠、廉价的控制系统成为当前的主要问题。随着科技的快速发展，单片的测控地位不断加深。根据目前的需求，提出以单片机为控制核心的红绿灯系统。单片机的交通灯控制系统主要由STC89C51单片机、LED红绿灯指示、8段数码管倒计时、紧急情况按键处理模块组成。本系统除了基本交通灯功能外，还具有通行时间手动设置、可倒计时显示、夜间模式、发生紧急事件车辆绿色通道等相关功能。通过电路仿真证明该系统能够简单、经济、有效地疏导交通，提高交通路口的通行能力。【关键词】单片机交通红绿灯LED定时计数数码管MicrocontrollerDesignAndImplementationOfTrafficControlLights【Abstract】trafficlightsbuildingfortressjunctionsystemforcommandandthecarsafeandorderlythroughthecrossroadsisanimportantmeanstoensurethattheroadsarewider;Withtherapideconomicdevelopmentofthelogisticsindustryrapiddevelopment,thetrafficvolumeisincreasing;causetrafficjams,smoothtravel.Thereforedevelopedasmart,reliable,low-costcontrolsystembecomethemainproblem.Withtherapiddevelopmentofscienceandtechnology,measurementandcontrolofthemonolithicstatuscontinuestodeepen.Accordingtothecurrentdemand,amicrocontrollerasthecorecontroltrafficlightssystem.ThethemicrocontrollertrafficlightcontrolsystemmainlybytheSTC89C51microcontroller,LEDtrafficlightindicator,LEDcountdown,anemergencybuttonprocessingmodule.Inadditiontobasictrafficlights,thesystemalsohastheaccesstimemanuallysetthecountdowndisplay,nightmode,theoccurrenceofthegreenchanneloftheemergencyvehiclesandotherrelatedfunctions.Simulationresultsshowthatthesystemcanbesimple,economic,effectivelyeasetrafficcongestion,improvetrafficjunctioncapacity.【KeyWords】single-chiptrafficlightsLEDTimercounterDigitaltube目录1绪论..............................................................11.1交通灯历史背景..............................................11.1.1交通灯的定义..........................................11.1.2交通灯的发展历史......................................11.2研究交通灯的意义............................................21.3研究内容....................................................22系统的方案与论证..................................................32.1设计任务....................................................32.2系统总体设计方案............................................52.2.1系统控制模块..........................................52.2.2系统显示模块..........................................52.2.3系统按键模块..........................................62.2.4显示驱动模块..........................................62.2.5系统电源模块..........................................63原理简介..........................................................63.1STC89C51单片机简介.........................................63.1.1STC89C51单片机引脚功能..............................73.1.2控制引脚..............................................83.1.3输入/输出引脚.........................................83.2单片机最小系统..............................................93.2.1时钟电路..............................................93.2.2.复位电路.............................................103.2.3显示原理.........................
