公交车语音报站系统的设计

青岛理工大学毕业设计（论文）题目公交车语音报站系统的设计学生姓名：指导教师：自动化工程学院电气工程及其自动化专业六班2011年6月16日青岛理工大学毕业设计（论文）I摘要本设计主要解决如何方便、准确地指示乘客到站的问题，具有模拟人声进行报站和预报站，对所报站数和站名进行文字显示和站名语音信息录放及站名选择控制等功能。系统包括微控制器模块，语音录放电路，站数、站名显示模组，键盘接口电路，复位电路及电源等。系统使用51单片机来控制语音合成芯片和液晶显示模组。语音合成芯片ISD4004,采用模拟数据半导体存储器直接存储的专利技术，即将模拟语音数据直接写入单个存储单元，不需经过A/D、D/A转换，因此能够较好地真实再现语音的自然效果，避免了一般固体语音电路因为量化和压缩造成的量化噪声和失真现象。配合液晶屏显示，就使得该报站系统更加实用。关键字：单片机，语音提示，文字显示，公交报站青岛理工大学毕业设计（论文）IIABSTRACTThedesignmainlysolvetheproblemofhowtoeasilyandaccuratelyindicatethatpassengersarriving.Ithasthefunctionofanalogvoicereportingandforecastingstationonthetextdisplay,reportingnumberandstationname,andvoiceinformationrecordingandstationnameselectioncontrol.Thesystemincludesmicro-controllermodule,voicerecordingandplaybackcircuitry,stationnumber,stationnamedisplaymodules,interfacecircuitofthekeyboard,resetcircuitandpowersupply.Thesystemuses51Single-chipMicrocomputertocontrolspeechsynthesischipandliquidcrystaldisplaymodule.SpeechsynthesischipISD4004adoptsthepatentedtechnologyforsemiconductormemorydirectlysimulateddatastorageofanalogvoice,thatanalogvoicedataiswrittendirectlytotheindividualstorageunits,notthroughA/DandD/Aconversion,sowecanreceivethenaturalemergenceofbettervoiceeffectsandavoidthequantizationofnoiseanddistortioncausedbythequantizationandcompressioninthegenerallysolidvoicecircuit.Besides,LCDmakesthereportingsystemmorepractical.KEYWORDS：Single-chipMicrocomputer,AudioPrompt,CharacterDisplay,Bus-StopAuto-Announce青岛理工大学毕业设计（论文）III目录摘要..............................................................................................................................IABSTRACT..................................................................................................................II第一章绪论..................................................................................................................1第二章方案设计..........................................................................................................22.1原理..................................................................................................................22.2框图..................................................................................................................22.3简介..................................................................................................................3第三章硬件设计..........................................................................................................43.1微控制器..........................................................................................................43.1.1复位........................................................................................................43.1.2晶振........................................................................................................43.1.3存储器....................................................................................................53.2语音提示..........................................................................................................73.2.1内部结构................................................................................................73.2.2引脚描述.................................................................................................73.2.3操作规则................................................................................................93.2.4ISD4004与外围设备的连接...............................................................123.3文字显示........................................................................................................143.3.1组成结构..............................................................................................143.3.2引脚功能..............................................................................................153.3.3液晶模组与单片机的连接..................................................................163.4键盘接口........................................................................................................163.4.1按键的确认..........................................................................................163.4.2重键与连击的处理..............................................................................173.4.3按键防抖动技术..................................................................................173.5电源................................................................................................................203.5.1芯片介绍..............................................................................................213.5.2稳压电路..............................................................................................22第四章软件设计........................................................................................................244.1语音提示应用实现........................................................................................244.1.1放音程序..............................................................................................244.1.2录音程序..............................................................................................254.2文字显示应用实现....................................