燕京理工学院毕业设计（论文）PAGE\*MERGEFORMATI2基于AT89C51单片机的家电远程控制系统的设计摘要伴随着电子产品的快速发展，手机和电话对广大人们群众来说已经不是一个新鲜词了，但是如何利用手机和电话对家用电器进行远程控制的技术还尚未成熟。本次研究的课题主要是针对如何对家用电器进行远程的控制。大家都知道，近几年来电子和通行技术发展的愈来愈成熟了，所以本文通过电话来设计达到远程控制家用电器的目的。该系统主要采用AT89C51和MT8870双音多频解码集成电路为核心,使用公共电话网络,实现了智能控制的远程家电设备。本文主要介绍了组成该系统的整体框架、工作原理以及程序的设计方法，对“振铃检测电路、模拟摘挂机控制电路、双音多频解码电路、语音提示以及家用电器控制电路”等都作了详细的解释。用户可以在远端固定电话或移动电话发送DTMF双音多频信号,实现对近端远程智能控制的家用电器。同时也可以让用户发送语音信号及时了解被控对象的状态,以提供相应的解决方案。这个设备是不适合家庭使用,也适用于大型商店和商业单位。设计不仅操作方便、简单、可靠性高,是一个非常有前途的未来在新技术产品。关键词：AT89C51单片机DTMF双音多频解码电路振铃检测摘挂机控制PAGE\*MERGEFORMATIVSystemforHouseholdElectronicApplianceBaseonTheMicrocontrollerAbstractWiththerapiddevelopmentofelectronicproducts,mobilephoneandcalltothepeople,itisnotanewword,buthowtousemobilephonesandphoneforhouseholdelectricalappliancesforremotecontroltechnologystillhasnotyetmature.Thisresearchtopicismainlyaimedathowtohouseholdappliancesremotecontrol.Asweallknow,inrecentyearsthroughthedevelopmentofelectronicandtechnologymoreandmoremature,sothispaperthroughthetelephonetodesigntoachievethepurposeofremotecontrolhouseholdappliances.ThesystemmainlytoAT89C51single-chipmicrocomputerandMT8870dualtonemultiplefrequencydecodingintegratedcircuitasthecore,withtheaidofthepublictelephonenetwork,soitcanrealizetheremotehomeapplianceequipmentintellectualizedcontrol.Thispapermainlyintroducestheoverallframeworkofthesystem,workingprincipleandprogramdesignmethodof"ringingdetectioncircuitandanalogpickhangmachinecontrolcircuit,dualtonemultiplefrequencydecodingcircuit,voicepromptandhouseholdappliancescontrolcircuit"andsoonallhasmadethedetailedexplanation.TheusercaninthefarendofafixedphoneormobilephonesendingDTMFdualtonemultiplefrequencysignal,realizestotheproximalhouseholdappliancesremoteintelligentcontrol.Atthesametimealsocansendvoicesignallettheusertounderstandtherelevantstatecontrolledobject,soastoprovidethecorrespondingsolutions.Thisdevicenotonlysuitableforfamily,alsoappliestolargestoresandenterpriseunit.Thisdesignisnotonlyeasytoope