汽車專業(yè)英語課件project6

Project6LightingsystemandNavigationsystem1課件制作者：中山職業(yè)技術(shù)學院王升平東北大學出版社改革創(chuàng)新示范教材2

Project6LightingsystemandNavigationsystem

掌握汽車照明系統(tǒng)組成結(jié)構(gòu)和種類、汽車導航系統(tǒng)技術(shù)和應用掌握各系統(tǒng)主要部件的的專業(yè)術(shù)語表達，了解新型LED燈技術(shù)和汽車GPS技術(shù)知識目標能讀懂汽車照明系統(tǒng)、導航系統(tǒng)的英文課文材料能熟記各種車燈、反光鏡、天線、導航器、GPS、SIM、GPRS等關(guān)鍵部件及其組成的相關(guān)專業(yè)詞匯、術(shù)語的含義。

能力目標改革創(chuàng)新示范教材3Task1Lightingsystem

1.Newwordsandexpressionsconfiguration[k?n,fiɡju'rei??n]n.構(gòu)造、形狀、外貌、輪廓intensity[in'tensiti]n.強烈、劇烈、(感情的)強烈程度illuminate[i'lju:mineit]vt.使明亮、照亮、闡明n.illumination照明indicator['?nd?,ke?t?]n.(車輛上的)轉(zhuǎn)彎指示燈、指示物、指示者hazard['h?z?d]n.危險、公害lamp[l?mp]n.燈reflector[r?'flekt?]n.反射器、反射光〔熱、聲音〕的物體lens[lenz]n.透鏡、鏡頭、眼睛中的水晶體emit[i'mit]vt.發(fā)出、放出luminous['lu:min?s]adj.發(fā)光的、發(fā)亮的、光明的coat[k?ut]n.上衣vt.為某物涂抹知識準備改革創(chuàng)新示范教材41.Newwordsandexpressionsimperative[im'per?tiv]adj.必要的、緊急的、極重要的refract[r?'fr?kt]vt.&vi.<物>(使)折射disperse[dis'p?:s]vt.&vi.(使)散開,驅(qū)散visibility[,v?z?'b?l?ti:]n.能見度、視程、可見物、清晰度complementary[,k?mpl?'ment?ri]adj.互補的legislation[,led?is'lei??n]n.法律、法規(guī)、立法、法律的制定[通過]accessory[?k'ses?ri]n.附件、配件windshield['w?nd,?i:ld]n.(汽車的)擋風玻璃beacon['bi:k?n]n.燈塔、燈標、(燈塔之類的)信號站rugged['r?g?d]adj.崎嶇不平的、多巖石的、健壯dazzle['d?zl]vt.使目眩oncoming['?n,k?m??,'?:n-]adj.迎面而來的,即將到來的inconjunctionwithadv.與…協(xié)力main/dipbeam遠/近光燈知識準備改革創(chuàng)新示范教材5Lightingsystem任務實施IntroductionThebasicconfigurationofthevehiclelightingsystemconsistsofthefollowing:(1)sideandrearlights(positionormarkerlightsincludingthenumberplateattherear).(2)interiorillumination(instrumentsandpassengercompartment)(3)mainforwarddrivinglamps(highandlowbeam)(4)rearfoglamps(high-intensityrearlightforuseinconditionsoffogorfallingsnow)(5)reversinglamps(illuminatedwhenreversingtowarnofmovementandtoprovideillumination)改革創(chuàng)新示范教材6Lightingsystem任務實施Figure6.1.2Rearlightingtypesbrakelampstaillampsrearnumberplatelamps4.reversinglamps1.Lampinfocalpointf2.Reflector3.Lens改革創(chuàng)新示范教材7Lightingsystem任務實施(6)brakelights(illuminatedwhenthebrakeisappliedtowarnotherroadusersthatthevehicleisslowingdown)(7)directionindicatorsandhazardlights.(8)spotlamps(long-distancelightsswitchedonwithmainbeam)(9)frontfoglamps(usedinfoggyconditionswithsideordippedheadlampstoilluminatetheroadimmediatelyinfrontofthevehiclewithoutproducingglare)(10)daytimerunninglamps(forcertainmarketsalightingsystemmustbeprovidedforuseinthedaytime;normallyitisprovidedviahead/sidelamps).改革創(chuàng)新示范教材8Lightingsystem任務實施FrontlightingThemaincomponentsinavehiclelampassemblyforforwardlightingconsistoflightsource(bulb),reflector,lens.Thelightsourceemitsabeamwhichisthendistributedviathereflectororlensaccordingtothelamptypeandthedriverrequirements(i.e.main/dipbeam)(seeFigure6.1.1).Ingeneral,theheadlamps'illuminationrangeisproportionaltothelensarea,whilsttheluminousefficiencyisafunctionofthereflectordepth.Anidealreflectorgivesabeamoflightwhichilluminatestheroadfaraheadinadditiontotheareaimmediatelyinfrontofthevehicle.Normally,reflectorsareshapedinaparabolicformandcoatedwithaluminiumtogivetherequiredreflectiveproperty.Thereflectorcollectsasmuchlightaspossiblefromthesourceinordertomaximizetheheadlamprange.Itisimperativethatthelightsourceisplacedatthefocalpointofthereflector.改革創(chuàng)新示范教材9Lightingsystem任務實施RearlightingTaillampsmarkthepresenceofthevehicle(frombehind)tootherroadusers.ThevehiclemustbefittedwithtwoEuropean-approvedlampunitsofnotlessthan5watts.Theymustbe:(1)between1500mmand350mmfromtheground.(2)spacedmorethan500mmapart.(3)positionedsothatthedistancebetweentheedgesofthevehicleandtheilluminatedareaisnotlessthan400mm.Therearnumberplateofthevehiclemustbeilluminatedatnightbyalampunitconnectedtothetail-lampcircuit.Thisisdesignedtomakethenumberplatevisibletootherroadusers;notethoughthatthebulbitselfmustnotbevisiblefrombehindthevehicle.Stoplampsarefittedtoalertfollowingdriverstothefactthatthevehicleisbraking.Twostoplampsilluminatingareddiffusedlightmustbefittedwhenthefootbrakeisapplied.改革創(chuàng)新示范教材10Lightingsystem任務實施Rearfoglampsareusedtoindicatethepositionofthevehiclefrombehindwhenvisibilityisextremelypoor.Theyaregenerallyusedinfogorfallingsnow.Oneortworearlampscanbefittedandmustonlyoperateinconjunctionwithheadlampsorfrontfoglamps.Theymustalsobeswitchedseparatelyfromthefrontfoglamps.Foglampsarenormallyfittedwitha21wattbulbandalenswithalargesurfacearea.Reversinglampsaredesignedtoilluminatetheareabehindthevehiclewhenreversing.Nomorethantwolampscanbefittedandtheymustnotexceed24watts.Thelightshouldbeswitchedonautomaticallywhenreversegearisengagedandtheignitionisswitchedon.改革創(chuàng)新示范教材11Task2Navigation

system1.Newwordsandexpressionsnavigation[,n?vi'ɡei??n]n.導航、領(lǐng)航destination[,desti'nei??n]n.目的地、終點compromise['k?mpr?maiz]n.妥協(xié)、折中方法vi.折中解決algorithm['?lɡ?rie?m]n.運算法則interface['int?feis]n.界面、分界面audible['?:d?b?l]adj.聽得見的visual['vi?u?l]adj.視覺的、看得見的jam[d??m]n.果醬、堵塞,vt.堵塞；干擾removable[ri,mu:v?bl]adj.可移動的harmonize['hɑ:m?,na?z]vt.&vi.(使)和諧、協(xié)調(diào)optimize['?pt?,ma?z]vt.使最優(yōu)化encrypt[in'kript]v.加密、將…譯成密碼知識準備改革創(chuàng)新示范教材12abuse[?'bju:s]n.濫用、妄用circumnavigate[,s?:k?m'n?viɡeit]vt.環(huán)航three-dimensional[θri:'dimen??n?l]adj.三維的、立體的counteract[,kaunt?'r?kt]vt.對抗、抵消supplement['s?pliment]vt.增補n.補遺、補編hand-held['h?nd,held]adj.手提式的、手執(zhí)的bandwidth['b?ndwidθ]n.帶寬portable['p?:t?bl]adj.便于攜帶的、手提式的、輕便的kit[kit]n.衣物和裝備、成套用品、配套元件cradle['kreidl]n.搖籃、發(fā)源地、吊架、支架real-time適時的handheld手持式hands-free免提、免持GPS(globalpositioningsystem)全球定位系統(tǒng)in-built內(nèi)置的、固定的、嵌入的GSM(globalsystemformobilecommunication)全球移動通訊系統(tǒng)SIM(subscriberidentitymodule)客戶身份識別卡知識準備改革創(chuàng)新示范教材13TheNavigation

system

任務實施IntroductionNavigationinthevehicleisaprocessthatthedriverusestogettotheirintendeddestinationbymeansofdirectionsorguidance.Inthepast,adriverwouldhavetodetermineorplanarouteusingpapermaps.Technologyhasmadethisjobeasierviadedicatedprogramsorwebsitesforrouteplanning.Theproblemisthataplannedroutemaybecompromisedduetotrafficconditions.Also,ifagivendirectionisaccidentallymissed,thentheprocessofgettingbacktotheoriginalroutecanbedifficultandtimeconsumingforthedriver.

Asolutionmadepossibleviadevelopmentsintechnologyis(seethefigure6.2.1).Thissystemuseselectronicmapsandoptimizedroute-calculationalgorithmsexecutedviaamicroprocessorforplanningthebestrouteaccordingtothedriver'srequirements.Thisroutecanbeofferedtothedriveronlineviaauserinterfaceprovidingaudibleandvisualinstructionsastheytravel(similartoaco-driver).改革創(chuàng)新示范教材14TheNavigation

system

任務實施Figure6.2.1Navigationsystemcomponents改革創(chuàng)新示范教材15TheNavigation

system

任務實施BasicprincipleTheavailabilityofsignalsforpublicusefromGPSsatelliteshasmadenavigationsystemspossibleforgeneralrouteandpositionfinding.Forgeneraluse,theGPSsatellitestransmitsignalsallowingpositioninginformationtobeestablishedwithaccuraciesof±10metresandthisismorethansufficientforvehiclenavigationuse.GPSsatellitesweredevelopedandprovidedforUSmilitaryuseandthesignalsgeneratedproducehighlyaccuratepositioninformation.Notethoughthatthesehigh-accuracysignalsareencryptedandreservedformilitaryusetopreventabuseofthisusefulinformation.Thereare24satelliteswhichcircumnavigatetheearthevery12hoursinsixdifferentorbits(seeFigure6.2.2).Eachonetransmitsauniquesignalatapproximately50Hzwiththeirpositioninformationandatimesignal.Duetothedifferenttransittimesofthissignalfromeachsatellite,thesignalreceivedfromeachonehasatimeoffset.TheGPSreceiverinthenavigationsystemcalculatesthedatatransmissiontimebycomparisonwithitsowninternalclock.改革創(chuàng)新示范教材16Thenavigationsystem

任務實施ThispositioninformationcanbeestablishedviaGPSaslongasgoodcommunicationsignalscanbereceivedfromthesatellites.IftheconnectionbetweentheGPSreceiverandthesatellitesiscompromisedinanyway,thenreal-timepositioninformationwillbelost.Thesignalsmaybecompromiseddueto:thesurroundinglandscape,valleys,hillsetc.,tunnels,buildings.Tocounteracttheseproblems,vehiclenavigationsystemsuseanadditionalmethod