1、武漢理工大學碩士學位論文基于電力載波通信的轉轍機液壓監(jiān)測系統(tǒng)的設計與實現(xiàn)姓名：許重府申請學位級別：碩士專業(yè)：通信與信息系統(tǒng)指導教師：李方敏20070401武漢理工大學碩士學位論文AbstractPowerlinecarriercommunicationisakindofcommunicationwhichtakestheexistingpowerlineasthemediafordataexchangeItcanreducethecos

2、tofthesystembysavingtheexpensesonsettingupaspeciallineWiththedevelopmentofnetworkcommunicationtechnologyithasbeenwildlyusedinautomaticcontrolfieldTherailswitchandconveIseequipmentarcveryimportantbutunfortunatelyitisaweak

3、linkinrailwayThemovementoftherailswitchisdrivenbyhydraulicswitchmachine，ithasgreateffectontherailwaytransportefficiencyandtra伍csafetyInordertoavoidaccidentsworkershavetocheckthehydraulicswitchmachineconstantlytomakesuret

4、hatifitisworkingwellornotTherailwayiselectrifyandhi曲speednowSOministryofrailwayshasproposedallevenhigherdemandonexaminationandrepairto豇lsuredrivingsafetyToimproveexistingmethodsthatmeasurehydraulicpressureofswitchmachine

5、，inthispaperwedesignakindofswitchmachinemonitoringsystemwhichbasedonpowerlinecarriercommunicationItcanimplementonlineandrealtimemonitoringonrailwayhydraulicswitchmachineThefollowingaspectsarediscussedindetail(1)Transmiss

6、ioncharacteristicofpowerlinecircuitchannelisstudiedandthecommonlyusedcommunicationtechnologiesareanalyzedThespreadspectrumcommunicationtechnologyisadoptedintherealizationschemeofthissystem(2)Thehardwarecircuitrysystemofl

7、owvoltageelectricpowerlinecarriercommunicationismakeupwithPL3201andfilterapmlifierandothersauxiliaryperipherycircuitConsideringtheexpansibilityofhardwaresystemtheframeworkofmainboardandsubboardisusedinpartofdatacentraliz

8、esystem(3)TheefficiencycommunicationprotocolisdesingedaccordingtotheactualsituationofthesystemandthepartitionmechanismofdataverificationisusedtosctclethebitfflTorproblemintheprocessofcommunicationItgreatlyreducesthetimes