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1、AutomaticTrainControlHoangNgaNguyenDepartmentofComputerScienceSwanseaUniversityOctober,2011OutlineIIntroductionIHistoricalsystemsITrainprotectionandwarningsystemsIAutomaticTrainProtectionIATOandATSIEuropeanTrainControlSystemISummaryIntroductionIAutomaticTrainControl(ATC)reducestheinvolvementof
2、humanintheoperationoftrains.IAims:Improvingsafety,trainservices,reducingsta costs.IFunctions:IAutomaticTrainProtection(ATP)IAutomaticTrainOperation(ATO)IAutomaticTrainSupervision(ATS)HistoricalsystemsGreatWesternRailwayAutomaticTrainControl"HistoricalsystemsBritishRailAutomaticWarningSystemHi
3、storicalsystemsTrainstopTrainProtectionandWarningSystemIAim:reducethenumberofSignalsPassedAtDangerIFunctions:ISpeedTrapITrainstopAutomaticTrainProtectionIAim:ensurethesafedrivingoftrainsatalltimesIImplementation:trainscarryafail-safecomputereusuringthatthetraindoesnotexceedasafespeedIThecomput
4、erneedstoknowavarietyofdatatocalculatethesafespeed,including:currenttrainspeed/distance,trainlength,trainbrakingperformance,maximumtrainspeed,routedata(gradient,maximumlinespeed).AutomaticTrainProtectionOperationofATPICalculatethemaximumpermittedspeedIDisplaytothedriverIMonitortheactualtrainsp
5、eedagainstthis:Iifexceedbyacertaintolerance(5km/h),thensoundawarning,aslongasthedriverreactsIifthedriverreacts,e.g.byreducingthespeed,thewarningwillceaseIifhefailstodoso,thebrakeisappliedautomatically.Thedrivermustbutcannotreleasethebrakeuntilthespeedreducestothepermittedlevel.ATOandATSIATOisa
6、nadaptationofATPtoallowtraintodriveitselfIBene ts:noneedforadriver,accelerationandbrakingaresmootherandmoreconsistent,instantreactiontochangingconditions,easyregulationoftrainservice.ILimitations:inabilitiestorecoverfromacompletefailureofthesystem,torespondtounexpectedobstructionontheline.IATS
7、extendsATOtoautomatethesignaller'sroleEuropeanTrainControlSystemLevel1EuropeanTrainControlSystemLevel2EuropeanTrainControlSystemLevel3SummaryIHistoricalautomatictrainssystems:GWRATC,BRAWS,Trainstop.IATCsystems:ATP,ATO,ATSandETCS.
