基于電力載波通信的轉(zhuǎn)轍機(jī)液壓監(jiān)測系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn).pdf

1、武漢理工大學(xué)碩士學(xué)位論文基于電力載波通信的轉(zhuǎn)轍機(jī)液壓監(jiān)測系統(tǒng)的設(shè)計(jì)與實(shí)現(xiàn)姓名：許重府申請學(xué)位級別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：李方敏20070401武漢理工大學(xué)碩士學(xué)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