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1、【毕业论文设计】家用电器电话远程控制系统家用电器电话远程控制系统本文设计的是一种基于AT89C51单片机的远程电话控制系统。该系统是以AT89C51为核心、利用现有的个人通信终端,实现基于PLMN陆基移动通信网和PSTN公用电话交换网的电话远程控制系统。电话远程控制系统ITRCS,以CCITT（国际电报电话咨询委员会）及我国标准共同规定的部分标准程控交换信令DTMF双音多频信号,振铃信号,回铃音信号等作为系统控制命令,以PLMN与PSTN通信网作为传输介质,使用者可以在远端利用固定电话或移动电话发送D
2、TMF双音多频信号,实现对近端电器设备的实时远程控制。该电话远程控制系统不需进行专门的布线,不占用无线电频率资源,从而可避免电磁污染；且通过嵌入式的智能语音提示,突出的语音提示功能和密码控制系统,可使操作者根据各种提示音及时了解受控对象的有关信息。还可通过发出语音命令用电话远程控制多个受控对象,用户可以查询其状态,提供密码处理功能,只有输入正确的密码才能控制家电,从而提高了安全性。该系统设计实用，功能灵活多样，可靠性高，操作方便，可以广泛地应用于家庭或者其它场所的智能控制。关键词 AT89C51；远程
3、电话控制；DTMF；智能家电TheTelephoneRemoteControlSystemforHouseholdElectronicApplianceBaseonTheMicrocontrollerAbstractThearticledesignedtheremotetelephonecontrolsystemwhichbasedonmicrocontrollerAT89C51.BasingonthePLMNandPSTN,thesystemwhichusesthecorecontrollerSin
4、gle-chipmicrocomputerAT89C51realizeslong-distancecontrolhouseholdappliances.ThetelephonecontrolsystemITRCSwhichusesthetelephonenetconvertandvoiceinformationreceivesDTMFcodefromthetelephonenet,andinterpretthecode,thecorecontrollercontrolsthestateofhouseh
5、oldappliancesrespondedtotheinterpretation.Longdistancecontroloftelephonedoesnotrequirespecialwiresdistributionanddoesnottakeupwirelessfrequencyresources.Electromagneticpollutioncanthusbeavoided.Thedesigningofasystemoflong－distancecontrolbasedonsoundproc
6、essingtechnologyandDTMFdecodingtechnologyispresentedinthispaper.Byusingsoundcommandsofsoundrecognitiontechnology,thissystemrealizesitscontrolofhouseholdelectricalappliancesthroughtelephonenetworksandsorealizestheintelligentlycontroloftheminresidence.The
7、embeddedandintelligentsoundindication,itsoutstandingsoundfunctionofpromptanditscodecontrolsystemenabletheoperatorstotimelyobtaintherelativeinformationofthecontrolledobjectsthroughindicatedsounds.Thesystemcanusetelephonetocontrolmanyhouseholdelectricalap
8、pliancesinlongdistancethroughutteringsoundcommandsandprovidesthecodesafeguardfunction.Onlythroughinputtingthecorrectpasswordtocontrolthem,theuserscancontroltheconditionofhouseholdelectricalequipment,Sothesystemsecuritycanbeimprov
