【电子信息工程毕业设计】基于单片机和DTMF技术的远程遥控系统硬件电路的设计

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1、（20__届）本科毕业设计基于单片机和DTMF技术的远程遥控系统硬件电路的设计III摘要本文介绍了通过远程控制系统实现的关于智能家居课题背景。描述了智能家居国内外的研究现状及未来的发展趋势和应用前景。着重分析了系统所涉及的硬件模块和软件模块，并提出了系统的总体设计方案。本系统以AT89C52作为系统的主控制器，利用MT8880集成电路芯片强大的音频处理和编解码能力使用户通过电话模拟线传输的信号实现对于家用电器的远程控制。而且还能对家用电器的状态进行查询，以实现家用电器的安防报警。提高了用户访问系统的灵活性和实时性，为用户

2、实现远程控制提供了一套可行的方案。该系统主要由振铃检测电路，模拟摘挂机电路，语音提示电路，DTMF解码电路，电器控制电路，并以单片机作为中央控制器，从而实现电话远程遥控功能。关键词：远程控制，单片机AT89C52，DTMF，MT8880IIIThedesignoflong-distanceexternalguidancesystemhardwarecircuit'sbasedonmonolithicintegratedcircuitandDTMFtechnologyAbstractThispaperintroducest

3、heresearchbackgroundofsmarthomethroughtheremotecontrolsystem.Itdescribesthedomesticandinternationalresearchpresentsituationandfuturetrendofdevelopmentandtheapplicationprospect.Moreover,analyzeonthehardwareandsoftwareModulemainly,thispaperdesignstheframeworkofthew

4、holesystem.ThesystemcontainsAT89C52asthemaincontroller.UseMT8800Integratedcircuitchippowerfulaudioprocessingandencodeanddecodecapability.Usercouldachievedomesticelectricappliances'remotecontrolthroughthetelephoneartificiallinestransmissionsignalandcaninquiredomes

5、ticelectricappliances'conditionforachievesecurityprotectandalarmofdomesticelectricappliances.Thesystem'sreal-timepropertiesandflexibilityareincreased,andsupportafeasibleplanforuser.Thesystemcontainsringingdetectioncircuit,voicepromptscircuit,analoganswercircuit,D

6、TMFdecodecircuit,electricalcontrolcircuits.Takethemonolithicintegratedcircuitascentralcontroller,thusachieveremotecontrolfunctionbythetelephone.Keywords:remotecontrol,monolithicintegratedcircuitAT89C52，DTMF,MT8800IV目录摘要............................................

7、..............................................................................IIIABSTRACT.................................................................................................................IV1绪论........................................................

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