IT专业paper写作computerinterlockingEnglandfrom1984startedtodevelopcomputer-basedinterlockingsystem,atpresent,asthecorerailwaytransportationsafetycontrolsystem,replacingtheoriginal6502Electric,butwiththelarge-scaledevelopmentofcomputerinterlockingsystemalsoexposedmoreandmoreproblem.Sincemanycomputer-basedinterlockingsystemretainsnearly30%oftherelaycircuit,complexstructure,largearea,multi-wire,solderjoints,thiscauseshighfailurerate,anti-interferenceabilityisweak,whileinterlockingsoftwareoutoftheintellectualpropertyprotectionconsiderations,iscompletelyclosed,forinterlockingsoftwarecorrectness,security,notin-depthcontrol.Softwaretestingisonlylimitedtofunctionaltesting,blackboxtesting,thetestcannotbeexhaustiverangeoffunctions.Thedevelopmentofacomputer-basedinterlockingrequirementsanddevelopment1.1ComputerInterlockingdevelopmentrequirementsToensurethatrailtransportleapsandbounds,givefullplaytotherailwaysignalfactories,engineeringunits,specializedconstructionunits,electricalservicemaintenanceunitsroleinensuringthebasicsecurityconditions,basedonthecomputer-basedinterlockingsystemallowsmulti-levelunitsbecomewidelyparticipatetoachieveanopeninterlockdevices.Computerinterlockingsystemoftheidealstateis:①completefactoryproduction;②completelystandardizeddesign;③mostsimplifiedconstructionsite;④mostsimplifiedacceptancemode;⑤mostsimplifiedmaintenanceapproach;⑥mostsimplifiedmaintenancetools;⑦easiestsecondarydevelopmentthatfreesecondarydevelopment;⑧completedeviceparametermonitoringfunction;⑨meettherailwaytrafficautomationinterfacefunctions.1.2ComputerInterlockingdirectionofdevelopment1.2.1TaketwosquarestwosystemsUK'scurrentcomputerinterlockingsystemare:hotstandby,twooutofthreeandtwobytwototaketwosystems.HotStandbysystemproblemexistsDualswitch,switchfailurewouldhaveseriousconsequencesfortherisk;shieldedredundanttechnologytotaketwoofthethreesystems,althoughthepossibilityofdangerousoutputisextremelysmall,buttherecannotbedowntimeproblems;thereforeThisyearthemaintechnologicaltransformationandnewrailwaylineshavegivenprioritytotaketwosquarestwosystems,twobytwocomputerinterlockingsystemisalsotakingfuturetrends.1.2.2FullyelectronicAsmanufacturingtechnologycontinuestoimprove,theelectronicunittogetthevigorousdevelopmentofelectronicunitwithasmall,powerfulfeatures;facilitatenetworking,remotemanagementandremotediagnostics.Thus,withtheMinistryofScienceandcontinuestoprogress,togetridoftherelay,usingfullyelectroniccomputerinterlockingwillbeatrend.1.2.3ModularForeaseofuseandmaintenanceofcomputerinterlockingshouldmovetowardsmodular,functionaldirectiontoachievethemodulelinereplacement,savingthesystemmaintenancetime.2fullelectronicmodularcomputerinterlockingsystemfeaturesandfunctions2.1Fullyelectronicinterlockingmodularcomputersystemwiththecharacteristics2.1.1hardwareconfigurationFullyelectronicinterlockingmodularcomputersystemusingindustrialcontroltechnology,theabolitionofall6502relaymoduleisindirectcontroloftheoutdoorunitswitchmachines,signalsmachines,trackcircuits,inaclear,comprehensivefaultdiagnosisandfaultindicationandallmodulessupporthot-swappablecapabilities,cabinetwiringwithplug-incabledirectlycorrespondnoseplatewillminimizetheamountofconstruction,theuseofdirectreplacementmodule,thefirstmaintenanceafteranalyzingwaystoachieve"fool"theconstructionandmaintenance.2.1.2SoftwareconstitutesInterlocki...