Ⅰ毕业设计(论文)题目:公交车汉字显示系统院(系):专业:姓名:学号:指导教师:二〇年月日Ⅰ毕业设计(论文)任务书学生姓名学号专业电子信息工程技术院(系)信息与机电工程学院毕业设计(论文)题目公交车汉字显示系统设计任务与要求任务1.完成时间段指导教师单位张庆松职称讲师院(系)审核意见Ⅰ毕业设计(论文)进度计划表日期工作内容执行情况指导教师签字教师对进度计划实施情况总评签名年月日本表作评定学生平时成绩的依据之一Ⅱ毕业设计(论文)中期检查记录表学生填写毕业设计(论文)题目:公交车汉字显示系统设计学生姓名:学号:专业:指导教师姓名:职称检查教师填写毕业设计(论文)题目工作量饱满一般不够毕业设计(论文)题目难度大适中不够毕业设计(论文)题目涉及知识点丰富比较丰富较少毕业设计(论文)题目价值很有价值一般价值不大学生是否按计划进度独立完成工作任务学生毕业设计(论文)工作进度填写情况指导次数学生工作态度认真一般较差其他检查内容:存在问题及采取措施:检查教师签字:年月日院(系)意见(加盖公章):年月日Ⅱ摘要随着时代的进步,公交车已经成为一般工薪族和学生族出门的交通工具。由于单片机技术以及电子语音技术飞速发展。目前,在公交车报站方面,也有传统的人工报站,逐渐改为使用微电脑的语音报站系统。从以前售票员的大声报站变成现在的自动语音报站以及汉字提示等新型的报站系统,加快了现代化建设的进程。是国家自动化交通发展的标志。本文介绍了一种新型的公交车自动报站汉字显示系统的设计原理,同时提供了一种以89C51单片机为核心,控制ISD4004语音芯片及LED点阵显示汉字的新方案。利用89C51单片机作为CPU来进行总体控制,通过语音控制电路进行各种提示语音的播放,同时使用LED点阵电路进行汉字显示,实现了公共汽车的语音自动报站以及汉字提示的功能,实现了图文、语音一体化协调工作,减轻了售票人员的劳动强度,提高了车辆的服务质量,是一种科技、时尚的新产品。同时它摆脱传统电子屏线的束缚,使其应用更加市场化,其“流动”显示的特点更为广告界所推崇,是一种全新的媒体。ISD4004语音系列芯片是美国ISD4004公司推出的产品,具有多次重复录放,存储时间长,使用时不需扩充存储器,所需外围电路简单等特点。本系统是以C语言来进行软件设计,指令的执行速度快,节省存储空间。为了便于扩展和更改,软件的设计采用模块化结构,使程序设计的逻辑关系更加简洁明了,使硬件在软件的控制下协调运作。关键词89C51单片机,D点阵显示,语音芯片ⅡAbstractWiththeprogressofthetimes,thebushasbecomethegeneralwageearnersandstudentsoutofthevehicle.DuetotherapiddevelopmentofSCMtechnologyandelectronicvoicetechnology.Atpresent,inthebusstation,therearetraditionalmanualstation,andgraduallychangedtotheuseofmicrocomputervoicestationsystem.FromthepreviousreportoftheconductorofthestationintothecurrentautomaticvoicestationandtheChinesecharacterpromptsandothernewstationsystem,tospeeduptheprocessofmodernization.Itisasignofthedevelopmentofnationalautomatictraffic.ThispaperintroducesanewtypeofautomaticstationbusChinesecharactersdisplaythedesignprincipleofthesystem,andprovidesa89C51microcontrollerasthecore,thenewcontrolschemeChinesecharactersISD4004pronunciationchipandLEDdotmatrixdisplay.AstheCPUtocarryoutoverallcontrolusing89C51microcontroller,avarietyofvoicepromptsbroadcastbyvoicecontrolcircuit,atthesametime,theuseofLEDdotmatrixcircuitChinesecharactersdisplay,realizingthebusaudioautomaticstationandfunctionofChinesecharacterssuggests,realizesgraphics,voiceintegrationwork,reducethelaborintensityofTicketsalesstaff,improvethevehicleservicequality,isanewproductoftechnologyandfashion.Atthesametimeitgetsridoftheshacklesoftraditionalelectronicscreenline,makeitsapplicationmoremarket-oriented,itsflowdisplayfeaturesmorerespectedbytheadvertisingindustry,isanewmedia.ISD4004serieschipisproducedbyISD4004companyofAmerica,withrepeatedrecording,longstoragetime,whenusedwithoutexpansionofthestoragerequired,thecharacteristicsofsimpleperipheralcircuitsetc..ThesystemisbasedonClanguageforsoftwaredesign,instructionexecutionspeed,savestoragespace.Inordertofacilitatetheexpansionandchange,thesoftwaredesignusesmodularstructure,sothatthelogicoftheprogramdesignmoreconcise,sothatthehardwareunderthecontrolofthesoftwarecoordinatedoperation.KEYWORD89C51MCU,LEDdotmatrixdisplay,pronunciationch目录摘要Ⅱ第1章绪论............................................................2第2章硬件电路的设计..................................................11.1硬件组成部分..................................................................................................................................11.2相关芯片介绍..................................................................................................................................12.2.1STC89C52RC单片机芯片...............................................................................................12.2.2ISD4004语音芯片.........................................................................................................31.3硬件各模块设计..............................................................................................................................91.3.1电源电路..........................................................................................................................92.3.2LED点阵显示电路.........................................................................................................92.3.3ISD4004语音录放音电路...........................................................................................102.3.4按键控制电路...............................................................................................................111.4本章小结.......................................................................................................................................12第3章软件部分的设计.................................................133.1软件总体设计................................................................................................................................133.2软件各模块设计............................................................................................................................143.2.1延时子程序...................................................................................................................143.2.4LED点阵汉字显示程序...............................................................................................19结论..................................................................21致谢.....................................................