基于LONWORKS的车站联锁控制系统设计与研究

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1、西南交通大学硕士学位论文基于Lonworks的车站联锁控制系统设计与研究姓名：王晓东申请学位级别：硕士专业：计算机应用技术指导教师：郭进20090301西南交通大学硕士研究生学位论文第1I页AbstractRailwaystationssignalcontrolsystemisthemainequipmenttoensurethetrafficsafetyinthescopeofthestations．Mostoftheexistingstationinterlockingcontrolsystemsaredevelopedfromthe6502

2、relayinterlockcontrOlsystem．intheimplementationlayer,mostofthefunctionsarecompeletedbyrelays，andthesystemcontainsalotofrelays，SOitneedanumberofmanpowerandmaterialstoinsureitsnormaloperation．Withthedevelopmentofmodernizationofcomputer,networkingandcommunicationstechnology,fiel

3、dbustechnologyhaswidelyusedintheareaofindustrialautomation。Itisaneffectivewaytoadvancethedevelopmentoftheinternalrailwaysignalcomputerinterlockingsystemtechnologybystudyingandexploitingthefieldbus．ThereforeitiSnecessarytoperfecttheexistingrelayequipmentbasedachievethefunction

4、ofrailwaysignalsystem．ontheruleoffault·safetyinordertocomputer-basedinterlockingcontrolThisPaperisaimedtosolvetheproblemsthatcausedonthebasisofexistingcomputerinterlockingcontrolsystemthroughtheimplementationofLonWorkSfieldbusanda11．electronicunittoreplacetherelayequipmentoft

5、heoriginalcomputerinterlockingcontrolsystem．inordertoachieveall—electroniccomputerinterlockingcontrolsystem．Firstofa11．thispaterbrieflyintroducesseveraltypicalfieldbususageathomeandabroad．withallemphasisontheLonWbrksfieldbustechnicalcharacteristics．Basedonnormativeprincipleso

6、fLonWbrkSbus，all—electroniccomputerinterlockingcontrolsystemisdesignedbyusingintelligentnodesanda11．electronicimplementationunitaspartoftheimplementationlayer．Computerinterlockingsystem’ShardwarestructureisalsodesignedbasedonLonW6rksbus．Inthesystemhardwareconfiguration。system

7、securityandreliabilityiSimprovedbyusingredundantstructure．Andinsoftware．thenodecontrolproceduresaledevelopedthroughtheuseofLonWbrksintelligentnodetechnology,andthisproceduredesignstheDDEsoftwareinterfacetoexchangeinformationwithinterlockmachine．Finally,thewholeresearchWOrkiss

8、ummarizedandsomefurtherstudiesneededtodoofafullelectroniccomputerint