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华北电力大学本科毕业设计（论文）I电力线通信测试系统设计与实现——基于FSK调制解调方式摘要电力线载波通信是利用现有的电力线网络进行信息传输的一种通信方式，利用电力线载波通信可以大大地减少线路投资和对线路的维护成本。利用电力线来实现数据通信对电力自动化及公用通信等具有重要的实际意义。随着电力载波技术的不断发展，电力线载波通信的优势越加明显。由于电力线载波信道的传输特性具有时变性、衰减较大、各种干扰噪声复杂等特点，所以为了在干扰严重的电力线上实现可靠的数据通信，必须慎重选择合适的调制解调方式、采用的通信协议以及性能良好的外围接口电路。本文根据电力线信道的大量实测数据，在实验室搭建了电力线通信的模拟测试系统。本文设计了基于微处理器LPC2214和FSK载波芯片的电力线通信测试系统。在不同传输衰减和噪声的情况下，对发送和接收系统滤波、放大、解调等电路的性能进行了充分的测试，并提出了电路的改进意见。中压电力线通信的现场测试表明，该系统能较为充分全面的模拟现场的实际情况，能够为通信系统的设计和改进提供有力的指导。关键词：电力线通信；LPC2214；FSK；华北电力大学本科毕业设计（论文）IIDESIGNANDIMPLEMENTATIONOFPOWERLINECOMMUNICATIONTESTSYSTEMBASEDONFSKMODULATIONANDDEMODULATIONAbstractPowerLineCommunicationisawaytocommunicateintheuseoftheexistingelectricpowernetworktotransmitinformation.Powerlinecarriercommunicationcangreatlyreducetheinvestmentandmaintenancecostsontheline.Andusingpowerlinetorealizedatatransmissionhasitsactualmeaninginpowerautomationandpubliccommunication.Withthedevelopmentofthepowerlinecarriercommunication，theadvantageofitismoreobvious。Asthepowerlinecarrierchannelwithtime-varyingtransmissioncharacteristics,greatattenuationandvarietyofinterferencecharacteristics,soinordertoachievereliabledatacommunicationonpowerline,wemustcarefullyselecttheappropriatemodulationanddemodulationmethod,thecommunicationprotocolandfindtheperipheralinterfacecircuitwithgoodperformance.Basedonthelargenumberofexperimentaldataofthepowerlinechannel，thispaperbuildsapowerlinecommunicationsimulationtestsystem.ThisthesisdesignedthepowerlinetestsystemonthebasisofmicrocontrollerLPC2214andcarrierchipusingFSKmodulationanddidenoughtestingaboutsendingandreceivingsystemfiltering,amplification,demodulationandothercircuitperformancewithdifferentattenuationandnoiseduringtransmission,andmadesomeimprovementsoncircuit.Thefieldtestofmediumvoltagepowerlinecommunicationshowsthatthesystemcanfullysimulatetheactualsituationandprovidestrongguidanceforthedesignofcommunicationsystem.Keywords:PowerLineCommunication;LPC2214;FSK华北电力大学本科毕业设计（论文）目录摘要..................................................................................................................................................IAbstract..........................................................................................................................................II1绪论..............................................................................................................................................11.1课题背景...................................................................................................................................11.2电力线载波通信技术...............................................................................................................11.2.1电力线载波通信技术发展....................................................................................................11.2.2窄带调制解调技术................................................................................................................21.3电力线载波通信调制解调芯片...............................................................................................21.4本文主要研究内容...................................................................................................................32硬件系统设计..............................................................................................................................42.1系统总体设计...........................................................................................................................42.2主要器件...................................................................................................................................42.2.1微控制器................................................................................................................................42.2.2电力线载波芯片....................................................................................................................52.3硬件电路设计...........................................................................................................................62.3.1ARM7主控制器单元.............................................................................................................62.3.2调制解调单元........................................................................................................................82.3.3外围模拟电路单元................................................................................................................93软件设计....................................................................................................................................133.1软件调试环境.........................................................................................................................133.1.1ADS1.2集成开发环境.........................................................................................................133.1.2JTAG调试软件....................................................................................................................133.2发送板程序设计.....................................................................................................................133.3接收板程序设计..............