毕业设计论文--自适应型交通信号灯控制系统的设计

本科毕业设计（2012届）题目自适应型交通信号灯控制系统的设计学院专业班级学号学生姓名指导教师完成日期诚信承诺我谨在此承诺：本人所写的毕业论文《自适应型交通信号灯控制系统的设计》均系本人独立完成，没有抄袭行为，凡涉及其他作者的观点和材料，均作了注释，若有不实，后果由本人承担。承诺人（签名）：年月日杭州电子科技大学本科毕业设计摘要本毕业设计主要研制自适应型交通信号控制系统，本系统可以根据实时的道路车辆滞留量来对下一次的放行时间进行控制，从而实现交通灯的智能控制。本系统设计以AT89S52单片机为路口控制核心、LED作为显示、驱动电路与部分模拟器件构成的一种电子产品。AT89S52单片机为控制核心，能实时的进行控制；由于LED有高节能、安全性高、寿命长、快速响应、运行成本低等优点，所以用作显示很合理；驱动电路用于对LED的驱动；此系统可以长时间稳定的运行，可用于各种十字路口，进行自动的交通控制，由于留有其它接口，可以很方便的进行升级扩展。89C51单片机的程序，使用keil编译器进行设计和调试完成，其主要功能是作为中央控制器。系统成功实现了定时模式以及自适应模式，还留有升级接口，可根据实际应用对其进行升级扩展，对于现实应用有实际意义。关键词：单片机，交通信号，自适应，智能控制杭州电子科技大学本科毕业设计ABSTRACTThisgraduationDesignismainlydevelopmentofadaptivetrafficsignalcontrolsystem,thesystemcanbebasedonreal-timeroadvehiclesretentionofcontroltothenextreleasetimeinordertoachieveintelligentcontroloftrafficlights.ThesystemisdesignedtomicrocontrollerAT89S52junctionstothecore,theLEDasadisplaydrivecircuitpartofthesimulatorconsistingofanelectronicproduct.AT89S52MCUisveryreasonableforthecontrolofthecorereal-timecontrol;LEDhashighenergy,highsafety,longlife,fastresponse,lowoperatingcosts,sousedasanindicator;ThedrivecircuitfortheLEDdriver;Thissystemcanbealongrun,canbeusedforavarietyofcrossroads,automatictrafficcontrol,leavingotherinterfaces,youcaneasilyupgradeandexpansion.Theprogramof89C51MCUisdesignedinkeilanddebuggedusingkeilcompiler.itsmainfunctionisasacentralcontroller.Thesuccessfulimplementationofthetimingmodeandadaptivemode,alsolefttoupgradetheinterfaceupgradeandexpansion,accordingtothepracticalapplicationofitspracticalsignificanceforrealityapplications.Keywords：MCU,Trafficsignals,self-adaption,automaticcontrol杭州电子科技大学本科毕业设计目录1引言.............................................................................................................................12概述.............................................................................................................................22.1自适应型交通信号灯控制系统.......................................................................22.2本设计方案思路...............................................................................................22.3单片机概述2.....................................................................................................22.48255可编程并行接口芯片概况：..................................................................72.474HC573概况..................................................................................................83总体设计...................................................................................................................103.1定时模式下原理.............................................................................................103.2自适应模式下原理.........................................................................................113.3其他说明.........................................................................................................124硬件设计...................................................................................................................134.1主控制器部分设计.........................................................................................134.2扩展并行IO口设计......................................................................................16图108255扩展IO口电路....................................................................................164.3显示部分电路设计.......................................................................................164.4队尾位置传感器设计...................................................................................184.5系统控制按键设计.......................................................................................194.6总体电路原理图...........................................................................................205软件设计...................................................................................................................215.1总体方案.........................................................................................................215.2程序流图.........................................................................................................216制作与调试...............................................................................................................286.1硬件电路仿真.................................................................................................286.2原理图绘制及PCB制板12............................................................................296.3硬件电路布线焊接...........................................................................................306.4调试.................................................................................................................307结论...........................................................................................................................32致谢.................................................................................................................................33参考文献.........................................................................................................................34附录.........................................................................................