ticlassd用于声学车辆警报系统avas

DetailedvAcousticVehicleAlertingSystem(AVAS)vAVASSystemBlockvClassDAudioAmplifierPortfolioWideInputvoltageFullloadHigherswitchingDetailedvAcousticVehicleAlertingSystem(AVAS)vAVASSystemBlockvClassDAudioAmplifierPortfolioWideInputvoltageFullloadHigherswitchingEV/HEVSound

Source:JapanJASIC,2011ICEVrepresentsInternalCombustionHVrepresentsHybridMeasurementfollowsSAEJ2889-1EV/HEVsarealmostsilent(particularlyatlowspeeds),whichpresentsadangertovulnerableroadusers,particularlythosewithvisualorhearingimpairments.AVASisinstalledtoonEV/HEVtosimulatethesoundofcombustionItisalsoknownaseESS(externalenginesoundsynthesis)ESM(exteriorsoundmodule)VSG(VehicleSoundGenerator),PAAS(电动汽车行车安全声音警示系统)etc.EV/HEVRegulationforvApril2014,EU,RegulationNo.ManufacturersshallinstallAVASmeetingtherequirementssetoutinAnnexVIIIinnewtypesofhybridelectricandpureelectricvehiclesby1July2019.OnlybasicrequirementsonAVASwereincludedintoEURegulationNo.540/2014alongwithacommitmenttoincludemoredetailedrequirementsoncetheUNECEhadconcludedtheirwork.vOctober2016,UN,RegulationNo.MoredetaileddescriptionoftheAVASsystemfunctionandvNovember2016,US,QuiteCarNHTSAisrequiringcompliancefor100percentofHVsandEVsproducedforsaleintheU.S.byallmanufacturersbynolaterthanSeptember1,2019.vSeptember2017,EU,RegulationNo.AmendmentstoRegulation(EU)No540/2014basedonUNRegulationNO.vSeptember2017,CN,GB7258—2017,:vCN,GB/TXXXXX—XXXX,Formalversionhasn’tbeenReferenceMaterialforhttps:///staticfiles/rulemaking/pdf/QuietCarFinalRule KeySpecforOperationv(a)SoundgenerationTheAVASshallautomaticallygenerateasoundintheminimumrangeofvehiclespeedfromstartuptoapproximately20km/handduringreversing.Wherethevehicleisequippedwithaninternalcombustionenginethatisinoperationwithinthevehiclespeedrangedefinedabove,theAVASshallnotgenerateasound.Forvehicleshavingareversingsoundwarningdevice,itisnotnecessaryfortheAVAStogenerateasoundwhilstreversing.v(b)TheAVASshallbefittedwithaswitchwhichiseasilyaccessiblebythevehicledriverinordertoallowengaginganddisengaging.Uponrestartingthevehicle,AVASshalldefaulttotheswitchedonposition.v(c)TheAVASsoundlevelmaybeattenuatedduringperiodsofvehicleKeySpecforSoundtypeandv(a)ThesoundtobegeneratedbytheAVASshallbeacontinuoussound.Thesoundshouldbeeasilyindicativeofvehiclebehaviourandshouldsoundsimilartothesoundofavehicleofthesamecategoryequippedwithaninternalcombustionengine.v(b)ThesoundtobegeneratedbytheAVASshallbeeasilyindicativeofvehiclebehaviour,forexample,throughtheautomaticvariationofsoundlevelorcharacteristicsinsynchronisationwithvehiclespeed.v(c)ThesoundlevelgeneratedbytheAVASshallnotexceedtheapproximatesoundlevel.themaximumlevel.OtherspecfromCarvCommandBrakevLoadOpenShortShorttoShorttoLoadvAmplifier1channelor2channelsarePowerisnormallyLessthan20W,dependsontheloadSamplingfrequencyis22K,44.1K,EqualizationtoachievebettersoundDetailedvAcousticVehicleAlertingSystem(AVAS)vAVASSystemBlockvClassDAudioAmplifierPortfolioWideInputvoltageFullloadHigherswitching

DigitalDigitalinputClassOptionAnaloginputClassDOptionFlashEntryMid-highDSP/MCU:AudiosignalCAN:Receivecommandincludingspeed,acceleration,Flash:StorethesoundCodec+ClassD:DrivethespeakertoalertPowersupplier:PowerthewholeDetailedvAcousticVehicleAlertingSystem(AVAS)vAVASSystemBlockvClassDAudioAmplifierPortfolioWideInputvoltageFullloadHigherswitchingAutomotiveClassDPortfolioforAnaoginputClass DigitainputCass22-WMonoAutomotiveClass-DAudioAmplifierWithLoadDumpandI2C90%EfficiencyandLowQuiescentOutputPower:22Wat4Ω,10%THD+NI2CLoadDiagnostics(Shorts,Open,DC40VLoadDump&OverTemp4.5-18VDifferentialaudioAutomotiveEMIPerformance(CISPR25FullyAEC-Q100RunsonbackuppowerforextendedExcellentfidelityathighIntegratedoperationalmonitoringtoreduceProtectsagainstharshautomotiveSupportsautomotivecold/crank&startIncreasedimmunitytosystemShortenssystemdevelopmentHighreliabilityforautomotiveAutomotiveAutomotiveEmergencyCall–InstrumentClusterAutomotiveEVsoundSystem8-WMonoAutomotiveClass-DAudioAmplifierWithLoadDumpandI2COutput 8Winto4Ω,10%THD+N,Shortto+12Vcarbattery40VLoadDump&OverTemp90%EfficiencyandLowQuiescent4.5-18VI2CLoadDiagnostics(Shorts,Open,DCDifferentialaudioAutomotiveEMIPerformance(CISPR25AmpleSPLfromalowvoltageProtectsagainstshortstohighervoltageProtectsagainstharshautomotiveRunsonbackuppowerforextendedSupportsautomotivecold/crank&startIntegratedoperationalmonitoringtoreduceIncreasedimmunitytosystemShortenssystemdevelopmentAutomotiveAutomotiveEmergencyCall–InstrumentClusterAutomotiveEVsoundSystemDigitalinput,dualchannelClass-DAudioAmplifierWithLoadDumpandI2C2x75Wat4Ω,10%THD+N,2x27Wat4Ω,10%THD+N,2x45Wat2Ω,10%THD+N,HighSwitchingFrequency(AboveAM)Digitalaudio4.5to26.4V40VLoadDumpI2CLoadDiagnostics(Shorts,Open,ExcellentfidelityathighReduceexternalcomponentImprovesnoiseSupportsautomotivecold/crank&startProtectsagainstharshautomotiveIntegratedoperationalmonitoringtoreduceReducessystemdevelopmentHighreliabilityforautomotiveDigitalAutomotiveheadAutomotiveexternalAutomotiveEVsoundTIInformation–SelectiveDigitalInput,DualChannelClass-DDigitalI2SaudioOutputPower:2x27Wat4Ω,10%THD+N4.5to26.4VUserprogrammableswitching SpeakerGuardTMprotection:AdjustablePowerLimiterandDC Over-Current,Over-Voltage,Under-Voltage,Over-Temperature,ClockErrorsandDCdetectstatusviaSPK_FAULTImprovesnoiseimmunityandreducessystemExcellentfidelityathighSupportsautomotivecold/crank&startOptimizessystemEMIProtectsspeakersfromoverdriveanddamagingDCExcellentreliabilityandrobustSystemSystemAutomotiveEVsoundDigitalInput,MonoChannelClass-DDigitalI2SaudioOutputPower:1x27Wat4Ω,10%THD+N4.5to26.4VUserprogrammableswitching SpeakerGuardTMprotection:AdjustablePowerLimiterandDC Over-Current,Over-Voltage,Under-Voltage,Over-Temperature,ClockErrorsandDCdetectstatusviaImprovesnoiseimmunityandreducessystemExcellentfidelityathighSupportsautomotivecold/crank&startOptimizessystemEMIProtectsspeakersfromoverdriveanddamagingDCExcellentreliabilityandrobustSystem AutomotiveInstrumentAutomotiveAutomotiveEVsoundWideinputvoltageCentraltransientvoltagesuppressorSource:InISO16750definesthelowestvoltageduringstartupmaybeaslowas3Vatseveresituation,itismorecommonthatCarOEMrequires4.5V~6V.Thecentralizedloaddumpsuppressionis35Vfor12VbatteryTAS6422cansupport4.5V~26.4Vfornormalworkingstatus,alsosupport40Vloaddumpvoltage,whichenabletheconnectiontocarbatterydirectly.ForPureEVor48Vsystem,starterisnotat12Vside,sothe12Vbatteryismuchmoreclean,whichmaynotneedhighinputvoltagerange.WideinputvoltageMoreinformationaboutthePowersupplierTIDesign–TIDA-AutomotiveWideVinpowerfrontendwithcoldcrankoperation,transientprotection,andEMIOnlinetrainingvideo–ISO7637Standards&SolutionsFullloaddiagnosticsvLoadOpenShortShorttoShorttoLoadvDiscreteApplicationnote:Class-DAmplifierExternalLoadDiagnosticsvIntegratedTAS54xx-Q1,TAS64xx-DCLoaddiagnostics,S2PandShortToGND/PWRDetectionCloseS1,S2.OpenForceOUTPUTN/OUTPUTPtoDVDD/2SendtheOUTPUTNandOUTPUTPseparatelytoCalculatethedifferencebetweenOUTPUTNtoDVDD/2andOUTPUTPtoReportfaultifshortis

S2PdetectedSensedvoltage>ShorttoBatteryS2GdetectedSensedvoltage<ShorttoGroundDCLoaddiagnostics,OLandShortLoadDetectionCloseS2,S3.OpenForceOUTPUTPtoDVDD/2SendtheOUTPUTNandOUTPUTPseparatelytoCalculatethedifferencebetweenOUTPUTNandReportfaultifshortoropenis

OpenLoaddetectedif:20mA*Rload>OpenloadthresholdShortLoaddetectedif:20mA*Rload<ShortloadthresholdSuccessfulDC4channelsdoLDGbeforeMonitoringOUTPoneachTotaltimeis~224o52msfor4channelsdischargetime,beforethediagnosiscanbegino4x2msforS2G/S2Po~4x40msforSL/OLoOtherDCdiagnosticsreportAC

ACdiagnosticsCloseS2,S3.OpenInject19K,40mAp2psinewaveDetectpeaktopeakvoltagebetweenOUTPUTNandOUTPUTP,averagebetweenthe64samplesReportthevaluetotheDetectpeaktopeakvoltagebetweenOUTPUTNandOUTPUTP.ACdiagnostics••4channelsdoAC••52msfor4channelsdischargetime4x117msforeachchanneldoingACDiagnosticsAudiofrequencyACdiagnosticsreportImpedanceofWoofer&Tweeter,APSweepTraceColorLineStyleThickAxis Cyan Anlr.LevelALeftwoo