智能誤碼測試技術(shù)在地鐵機電設(shè)備監(jiān)控系統(tǒng)中的應(yīng)用研究.pdf

1、華南理工大學(xué)碩士學(xué)位論文智能誤碼測試技術(shù)在地鐵機電設(shè)備監(jiān)控系統(tǒng)中的應(yīng)用研究姓名：高翔申請學(xué)位級別：碩士專業(yè)：電子與通信工程指導(dǎo)教師：葉梧李萬略20061101AbstractTheElectricalandmechanicalcontrolsystem(EMCS)ofmetroisindustrialcontrolsystemusedtomonitorandcontrolimportantelectricalandmechanicale

2、quipmentsinmetrostationByconnectingRI／Oandintelligentcontrollerdistributedwidelywithinthemetrostationthroughfieldbus，theEMCScanacquiredatafromandsendinstructionstotheobjeetswhicharemonitoredandcontrolledbythesystemBecaus

3、eoftheadverseconditionsofactualfield，fieldbusinmetroEMCSissusceptibletoexternalfactorssuchaselectromagneticinterference，thesefactorscausetransmissionbiterroraffectthequalityofcommunicationsandbringpotentialproblemstonorm

4、aloperationofthesystemThispaperfocusesonresolvingproblemsoffieldbuserrorbitdetectionandearlywarninginmetroEMCS，weresearchedanddevelopedafieldbuserrorbitdetectionfacilityforthemetrocontrolsystembyanalyzingcommontheoryandi

5、tscommonlyusedtestmethodoferrorbitdetectionindigitaltransmissionsystem，inthelightofpracticalapplicationrequirements，andusingadvancedprogrammableASIC(ProgrammableApplicationSpecificIntegratedCircuit)technologyThemainworks

6、whichhavecompletedlistasfollowing：TakingEMCSofGuangzhouMetroLine3’asexample，Ianalyzedthecompositionofcontrolnetworkofthesystem，studiedindetailthefieldbusprotocolusedinthesystem，andemphaticallyanalyzedcausesofactualfieldc

7、ommunicationfailureIalsotookthisopportunitytoproposeanerrorbitdetectionprogramapplicabletofieldbusbycommunicatingwithfieldoperatorsandmaintainersTheprogramcannotonlysolveerrorbitdetectionunderchannelnormaltransmissionsto

8、pafterfieldbuscommunicationfailure，butalsoprovideearlywarningdataofchanneldeteriorationorinitialinterferencetomaintenancestaffbyenhancingthefunctionofrealtimemonitoringandrecordingunderkeptfieldbusTheissuesuccessfullydev

9、elopederrorbittestequipmentapplicabletofieldbusbyemployingadvancedFPGA(FieldProgrammableGateArray)andMCS51seriesSCMIntheprocessofstudyanddevelopment，manyproblemswereeffectivelysolved，suchastestsequencebitsynchronization，

10、sequencesynchronization，CRCcheckandBERfloatingpointcalculation，theadvancedintelligentdigitalphaselockedloopalgorithmwasdeveloped，thesemakethesystemgainthefunctionofrapidautomaticsynchronizationofsignalclockinrangeof3002M