城轨英语单元12

Unit12ATO列车自动运行系统UnitAim

YouwillbeabletoremembersomewordsaboutATO.introducethecompositionandprofileofATOsystem.AdvisedHours4classhoursSchematicofthebrakecontrolusedontheATOsystemforstationstoppingThefunctionofATO1.Theamplifierfunctionis

signalamplification.2.The20kHzfilterfunctionis

Clutterfilter.3.Thetrainspeedbinarycounterfunctionis

recordtrainspeedandconvertedtobinary.4.What’stheroleofATO?

Achieveunmanned5.IstheATOalmightyup?

NO(DavidandSamarediscussingATOsysteminmetrooperation.)David:WhatdoesATOstandfor?Sam:ItmeansAutomaticTrainOperation.David:Whatisitsmainfunction?Sam:MainlyitensuresthenormalrunningandoptimizingoftraindispatchinsteadofTO’sautomaticoperation,includingacceleratesmoothly,speedcontrollerandstationstopping.David:WhatisthegreatestadvantagecomparedwithATOoperation?Sam:Itcanreducemanfulfault.David:IsATOappliedinChina?Sam:ItiswidespreadinHongKongarea,anditisn’tusedinmainland.Afull-timeTOissentforeverytrain,whosemainjobistocontrolthedoor’sopeningandclosing.NewWordsandExpressionsATOAutomaticTrainOperationn.列车自动运行系统function[fʌŋkʃən]n.功能optimize[ɔptimaiz]vt.使最优化accelerate[æk5seləreit]vt.使增速smoothly[smu:ðli]ad.平滑地;流畅地fault[fɔ:lt]n.过失，失误widespread[waidspred]a.广泛的，普及的Subway

Automatictrainoperation(ATO)ensurespartialorcompleteautomatictrainpilotinganddriverlessfunctions.Mostsystemselecttomaintainadriver(trainoperator)tomitigaterisksassociatedwithfailuresoremergencies.ManymodernsystemsarelinkedwithAutomaticTrainControl(ATC)wherenormalsignaleroperationssuchasroutesettingandtrainregulationarecarriedoutbythesystem.TheATOandATCsystemswillworktogethertomaintainatrainwithinadefinedtoleranceofitstimetable.Thecombinedsystemwillmarginallyadjustoperatingparameterssuchastheratioofpowertocoastwhenmovingandstationdwelltime,inordertobringatrainbacktothetimetableslotdefinedforit.Subway

TheearliestATOsystemonafullundergroundlinewasontheBarcelonaMetroline2(nowintegratedonL5),whichranfrom1963until1970onitsseventrains.AnotheroneoftheearliestexamplesofATOwasontheVictorialineoftheLondonUnderground,openedin1968.TheATOsystemperformsallfunctionsofthedriverexceptfortheopeningandclosingofthedoors.Thedriveronlyneedstopresstwobuttonstostartthetrainand,ifthewayisclear,thenthetrainwillautomaticallyproceedtothenextstation.ManyrailwaysareplanningtouseATOinthefuture.IthasbeenpartiallyimplementedontheDelhiMetrowithplansoffullATOoperationsbytheyear2013.ATOwillbeintroducedontheLondonUnderground’sNorthernlinein2011.AlthoughATOmayalsobeusedonthefuturecrossrailandThameslinktrains,ithasnotyetbeenimplementedonanyUKmainlinerailways.WhichsubwayfirstusedATOsystem?.___________________________________________________________________________________________________________________________________________________________________________________________________2.CanyoudescribedevelopmentofATOinfuture?

_____________________________________________________________________________________________________________________________________________________________________________________________________________TheearliestATOsystemonafullundergroundlinewasontheBarcelonaMetroline2(nowintegratedonL5)Intelligent,unmannedoperationof,andafulltimeTrytocollectthenameoftheHongKongmetrolinesandclassifythemintomannedanddriverless,andfillinthefollowingform.MannedDriverless东铁线西铁线观塘线荃湾线港岛线东涌线将军澳线马鞍山线迪士尼线机场快线龙华线港岛南线Askthemeaningofanabbreviation：1.WhatdoesATOstandfor?

Itstandsforautomatictrainoperation.2.WhatisthefullnameofATO?

Itsfullnameisautomatictrainoperation.1Canyoutellmethe