数据库存储单元在CBTC系统中的应用与研究

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1、北京交通大学硕士学位论文数据库存储单元在CBTC系统中的应用与研究姓名：周大鹏申请学位级别：硕士专业：交通信息工程及控制指导教师：唐涛20061201北京交通大学硕士学位论文AbstractCommunicationbasedtraincontrolsystemisthemostpopularandimportantautomatictraincontrolSysteminthemodemworld．Itcaraccomplishitsdatacommunicationutilizingcontinuous，highcapacity,hi-directionalt

2、rain—to-waysidedatacommunications．CBTCsystemcontainsalotofsubsystems，whichareinosculatedtogetherandcanrealizethepowerfulfunctionofCBTCsystem．Hereinto，DSUisshortedfordatabasestorageunit．Itisonesubsystemofcommunicationbasedtraincontrol(cm'osystem．DSUcansaveandprovidealloftheCBTCdata,and

3、realizemanydataprocessingfunctions，suchasdataresearch,dataexchangeanddatadownload．Afterconsultingmanycorrelativematerialsinformation,thispapergenerallyresearchesanddesignstheDSUsubsystemofCBTCsystem．Thispaperdefinestheconfigurationandcharacterfunctionsofallthesub-databases，andanalyses

4、allkindsofdataprocessingmethods．ThepaperalsoconstructsallmodulesofthedatastorageandmanagementsubsysteminDSUsystem，andprovidesthedevelopmentstrategyofembeddedDSUsoftwaresystemincludingreal·timecharacteristic．Thedesignstepsanddevelopmentflowsofthesoftwaresystemareemphasizedinthispaperin

5、ordertoestablishtheembeddedDSUsoftwareplatform．Consideringthesafetydemandsofthesimulationsystemanditsactualequipment，thispapersuggestsdevelopingtheDSUsystembasedonthesafetycomputer．AnditshouldbedonebyutilizingcomputerClanguagetocompilethesourcecodeoftheprogrambasedonVxWorks，whichisoue

6、ofembeddedreal-timeoperatingsystem．Besides，thepapermakesaqualitativeresearchonthecharactersofdatasecurityanddatabasesecurityinDSUsystem．AndtheemphasisisthathowtheconstructionofDSUrepresentthedemandofdatasecutity．Finally,thispapersummarizesthetask，andlooksforwardtoprospect，forexampleho

7、wtoputtheactualequipmentintofurtherjob．KEYWORDS：CBTC；Databasestorageunit；Systemdesign；DataSecurity；SafetyCLASSN0：致谢本论文的工作是在我的导师唐涛教授的悉心指导下完成的。唐涛教授作为轨道交通领域的知名专家，其雍容大度的学者风范、严谨的治学态度、科学的工作方法、敏锐的科学思维和丰富的研究经验给了我极大的帮助和影响。在近三年的时间里，从理论学习、论文选题、方案制订、科研攻关到论文撰写、修改和定稿的过程中，我所取得的每一个进步无不凝聚着唐老师辛勤的汗水和大量心

8、血。在此，