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附录A外文TechnologyFeaturesReasearchofJapaneseRailwaySignalSystemThispaperbeginswiththedevelopinghistoryandtechnicalclassificationofrailwaytransportation,introducestherailwaycontrolsystemusedinJapan,analyzesitstechnologyfeaturesrespectivelyfromtheaspectsofelectronic,computerandcommunicationtechnology,andatlastproposesthetechnicaldevelopingdirectionoffuturetraincontrolsystem.1、IntroductionIntheearlydaysofrailways,therewasnosignalingsystem.Astationattendantshowedthesignalofgoorstopbygestures.Butpeoplewouldmakesomemistakeswhichcausedaccidents.Signalingsystempreventstheaccidentsefficiently.EarlysignalsysteminJapanwasAutomaticTrafficStop(ATS)devices.Thisdevicecouldautomaticallystopthetrainwhenitreceivedthestopsignal.Evenifthedriverignoredthealarmofthetrain-bornestopdevice,thedeviceonthetrackcouldstopthetrainautomatically.ATS-P(AutomaticTrainStopProtection)wasdevelopedtoraiseefficiency.Usingtherespondertosendareceivedatasignal,ATS-Psystemtransmitsinformationofthedistanceaboutthenextstoptothetrainviathetrack,andthenthesystemgeneratesatrainspeed-checkingpatternwiththeseinformation.ATC(AutomaticTrainControl)systemisdevelopedtoresolveproblemsofATS-P.InATCsystem,safetyoperationprocedurewillbeactivatedtoguaranteethesafeperformanceofthetrainwhenthetrainoperatormademistakes.Tomeettheneedsofthemodernmassivehigh-efficienttransportation,newtrafficcontrolsystemsareemergingsuchasATACS(AdvancedTrainAdministrationCommunicationSystem),CBTC(CommunicationBasedTrainControl),etc.Withtheintegrationofrailwaysignalandcommunicationtechnology,trackstructureofnewpatternandadditionaltrain-bornefunctions.ThispaperproposesthefeaturesofthecurrentrailwaycontrolsysteminJapanwiththedevelopmenthistoryoftherailwaysignalsystemasbackground,andthenshowsitskeytechnologyanddevelopmentsinfuture.2、RailwaySignalSystemsThefirstrailwaytransportationsystembegantooperatein1830betweenLiverpoolandManchester.Signalsystemwasintroducedtoimprovesafetyandtocopewiththeincreaseoftrafficvolume.In1841,thesignaltechnolo
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