低成本列车控制系统专用数据库的设计与开发

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1、北京交通大学硕士学位论文低成本列车控制系统专用数据库的设计与开发姓名：贾丽华申请学位级别：硕士专业：交通信息工程及控制指导教师：蔡伯根20080601=』量立交通厶堂亟±堂位论塞△旦S!＆△￡工ABSTRACTABSTRACT：Withthedevelopmentoftraincontrolsystem，railwayoperationdepartmentshavealreadybeenengagedinseekingamethodcalled“Low。costTrainOperationControlSystem”，whichCallincrease

2、railwaytransportationefficiencybutreduceoperatingandmaintenancecost．AdoptingGlobalPositioningSystem(GPS)canreducewaysideequipment，SOit’saneffectivewaysolvingthecostproblem．Oneoftheimportantfoundationshowtoachievetrainlocationsafelyandreliablyisspecialtrackdigitalmapdatabase．Ther

3、efore，researchingonthedesignanddevelopmentofspecialdatabasededicatedforlow—costtraincontrolsystemhasahighvalueofpracticalapplication．Firstly,thisthesisintroducesthekeytechnologieswhichhavebeenappliedtothespecialdatabasegeneration，designstheprocessofthespecialdatabase．Accordingto

4、theone．dimensionaltraintrackprofileandcomplextopology,thethesisputsforwardatopologicaltrackmodel，thendesignsspecialdatabasestructurestoringtrackspatialdataandattributedatatogetheronthebasisofthereal—timeandsimplicity．Consideringtherationalityofthedatabasestoringstructure，thethes

5、isproposesamulti-scalepiecewiselinearizationalgorithmwithfavorableadaptabilityaimingattheproblemofcurvedtrackstoring．Bymeansofadjustingerrorthresholdcorrespondingtothecurvedtrack’Sactualcharacteristics，balancesthefidelityanddatacompressionratio，thuslaysafoundationoffaststorageof

6、massdatatorealizetrain’Srealtimepositioning．Thethesisdetailedintroductionsthedevelopmentmethodandprocedureofthespecialdatabase．Themainfunctionsofthissystemistogeneratetrackdigitalmap、trackconfigurationdiagramandrealizestheircorrespondingmapping．Accordingtorequirementsofthetrainc

7、ontrolsystem，thesystemisdividedintotwomajorfunctionmodulebothtrackdigitalmapmoduleandtrackconfigurationdiagrammodule．TheformerCanlookoverallgeographicinformationofthesegments，thelatterCandemonstratethetrack’Sschematicplaninastylewhichtherailwayprofessionalsarefamiliarwith．Finall

8、y,thethesisrealizesthegenerationofthespecialdat