毕业论文-基于AT89C2051单片机滚动式广告窗系统设计.doc

毕业论文-基于AT89C2051单片机滚动式广告窗系统设计济南大学泉城学院毕业设计题目基于AT89C2051单片机滚动式广告窗系统设计专业机械设计制造及其自动化班级学生学号指导教师二〇一一年五月二十六日摘要本文介绍了滚动式广告窗的概念、发展现状、控制系统、未来的发展趋势,以AT89C2051单片机为核心的滚动式广告窗控制系统原理以及系统的硬件方面的设计,其中包括单片机的型号、引脚功能介绍,步进电动机的特性、原理及驱动电路图,超声波接收与发射原理及电路图的设计以及语音电路图的设计,通过对各个部分的功能的理解明确了整个系统的工作流程,并做出了整个软件结构流程图,实现了以AT89C2051单片机为核心的滚动式广告窗控制系统,通过超声波发射电路和接收电路检测广告窗前有人停留时,播放语音广告信息;无人停留时,则通过单片机控制步进电动机按一定时间周期滚动显示窗内广告画面,实现了静态广告画面旋转的自动控制,提高了广告宣传的效果。关键词:广告窗;AT89C2051单片机;步进电动机;超声波发射与接收;语音电路。ABSTRACTThispaperintroducestheconceptofrolling-upadswindowsdevelopmentStatus,ControlSystem,Futuretrends,AT89C2051microcontrollertorolling-upadsasthecoreprincipleofthewindowcontrolsystemandSystemhardwaredesign,Theseincludethetypesinglechip,pinFeatures,Steppermotorcharacteristics,principleanddrivingcircuit,Receivingandtransmittingultrasonicprincipleandcircuitdesignandschematicdesignofspeech,Byunderstandingthefunctionofeachpartclearofthewholesystemworkflow,Andmakeaflowchartofthesoftwarestructure,AT89C2051microcontrollerimplementstherolling-upadsasthecorecontrolsystemofthewindow,Theultrasonictransmitterandreceivercircuitwhentheadstothewindowwastostay,playaudioadvertisinginformation;Nobodystays,thesteppermotorthroughtheSCMatacertaintimeperiodwithintheadvertisingscreenscrollthedisplaywindow,:AdvertisementWindow,AT89C2051Microcontroller,SteppingMotor,Ultrasoundtransmitterandreceiver,····································································IABSTRACT·····························································II1前言·······································································································································································22系统的总体设计························································53单片机介绍·······················································································································