mvb多协议通信网关的设计

《mvb多协议通信网关的设计》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、西南交通大学硕士研究生学位论文第11页AbstractNow．、历mrapiddevelopmentofdomesticandinternationalhigh·speedrailwaysandhigll-speedtrains，anddistributednetworkcontrolsystems，traincommunicationnetwork(TCN)hasbeenwidelyappliedtothenewtrainsintheworld．InthefivekindsofCRHMultipleU

2、nits(MU)developedinChina，threekindsofMUuseTCNnetworkcontroltechnology．MultifunctionVehicleBus(MVB)gatewayisallimportantcomponentofTCN．butitsresearchandapplicationinChinaarefacedwimlong—termtechnologyblockadeandmarketmonopolyofforei弘manufacturers．And，beca

3、useofthedifferenceofthetechnicalstandardsbetweentherailtransmissionequipmentmanufacturers，manyboardequipmentsdonotsupporttheMVBbuscommunicationfunctions．ThismakesthatMVBgatewayiswidelyused．ButmanyMVBgatewaysonlyhavesingleprotocolconversionfunction．Thisno

4、tonlyviolatestheopennessprincipleofthetrainbus，butalsoaffectsthecompatibilityofMVBgateway．Underthisresearchbackgroundandapplicationenvironment，thesubjectreferstoTCNnetworkcommunicationstandardsIEC61375·1，andcombinesWi-Fiwhichisacurrentwirelesscommunicati

5、onhotspot，withCANbus，RS-485busandRS-232buswhicharewidelyappliedtotrains．ThepaperproposesaMVBmulti-protocolcommunicationgatewayscheme．Firstly，thispaperoutlinestheoveralldevelopmentofTCNandMVBgateway，secondlywefurtherresearchthekeytechnologyintheMVBmulti—p

6、rotocolcommunicationgateway,especiallytheprocessdatacommunicationofMVBreal-timeprotocol；Lastly，weanalyzethedesignandimplementationofboththemulti-protocolgatewaysoftwareandhardwareindetail．Forthehardware，thesystemusesasmallembeddedMVBcommunicationboardSSM

7、V62ADandhi曲一performanceandlow-powerARMprocessorSTM32F103ZET6developedbySTMicroelectronics．AndwedesignanddebugPCBhardwareboardofMVBmulti—protocolgateway．Forthesoftware，accordingtotheprincipleofrealtimeandreliabilityofMVBprocessdatalinklayercommunication，t

8、hepaperproposesthetraingatewayresidentialport，thedevicegatewaysourceport，andtheperiodicallytriggeraccesstooccasionaldatasetsschemes．AndfortheunreliableUDPtransmissioninWi—Fiwirelesscommunications，basedontheTCPtimeoutandret