电力线载波通信发射机设计

JIUJIANGUNIVERSITY毕业论文（设计）题目电力线载波通信发射机设计英文题目Transmitterdesignofpowerlinecarriercommunication院系电子工程学院专业通信工程姓名年级2009级指导教师曹晖二零一三年六月九江学院学士学位论文--I摘要电力线载波通信(也称PLC-PowerLineCarrier)是利用高压输电线作为传输通路的载波通信方式，用于电力系统的调度通信、远动、保护、生产指挥、行政业务通信及各种信息传输。电力线路是为输送50Hz强电设计的，线路衰减小，机械强度高，传输可靠，电力线载波通信复用电力线路进行通信不需要通信线路建设的基建投资和日常维护用，在电力系统中占有重要地位。本设计是基于LM567锁相环音调译码器的电力线载波发射机设计。调制方式为FM模拟调制。电路主要部分为音频放大电路，调制单元，滤波单元，功率放大单元等。在完成本设计硬件部分的理论分析，硬件制作后，进行相关的测试，并对测试结果做进一步的分析，改进。关键词：电力线载波通信；锁相环；FM；模拟调制电力线载波通信发射机设计--IITransmitterdesignofpowerlinecarriercommunicationAbstractCarriercommunicationpowerlinecarriercommunication(alsoknownasPLC-PowerLineCarrier)istheuseofhighvoltagetransmissionlineasatransmissionpathforpowersystemdispatchingcommunication,remote,protection,productioncontrol,theadministrativebusinesscommunicationandinformationtransmission.Powerlinefortransporting50Hzstrongelectricdesign,lineattenuation,highmechanicalstrength,reliabletransmission,powerlinecarriercommunicationcomplexpowerlinecommunicationdoesnotrequirecommunicationlineconstructioninvestmentininfrastructureandroutinemaintenance,animportantpossessioninthepowersystemposition.ThedesignisbasedontheLM567PLLcircuittonedecoderpowerlinecarriertransmitter.ThemodulationschemeistheFManalogmodulation.Themainpartofthecircuitare:：audioamplificationcircuit,amodulationunit,afilteringunit,thepoweramplifyingunitorthelike.Thetheoreticalanalysisofthecompletionofthehardwarepartofthedesign,test,andtestresultsforfurtheranalysis。KeyWords：PowerLineCarrier；phaselockedloop；FM；九江学院学士学位论文--III目录Abstract.....................................................................................................................................II第一章引言............................................................................................................................11.1国外发展.....................................................................................................................21.2国内发展.....................................................................................................................2第二章电力线载波通信技术..................................................................................................32.1电力线载波通信.........................................................................................................32.1.1电力线载波通信原理......................................................................................42.2锁相环路作用及原理.................................................................................................62.3锁相环路的各组成部分及具体工作过程.................................................................7第三章电力线载波通信发射机的设计..................................................................................83.1本次设计、任务、技术指标.....................................................................................83.1.1课题、任务、主要技术指标...........................................................................83.1.2整体设计方案..................................................................................................83.2单元电路设计,计算....................................................................................................93.2.1音频放大电路的设计......................................................................................93.2.2LM386...............................................................................................................93.2.3基于LM386的音频放大电路...............................................................................113.2.4音频放大电路部分的仿真.............................................................................113.3滤波电路....................................................................................................................123.4FM调频.....................................................................................................................133.4.1FM调频原理..................................................................................................133.4.2调频方案.........................................................................................................133.5基于LM567的调制电路的设计..............................................................................153.5.1LM567.............................................................................................................153.5.2基于LM567的调制电路..............................................................................173.5.4二阶滤波电路.................................................................................................173.5.5高频功率放大器的设计.................................................................................193.5.6电源电路的设计............................................................................................213.6完整电路设计图..................................................................................................23第四章电路测试与分析........................................................................................................244.1设计结果验证............................................................................................................24电力线载波通信发射机设计--IV4.1.1电源电路的检测...................