电梯语音报站器外文翻译.docx
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电梯语音报站器外文翻译.docx
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电梯语音报站器外文翻译
2012届本科毕业论文
中英文翻译
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2012年5月10日
Basedonsingle-chipmicrocomputercontrolelevatorvoicestationreportingdevice
Keywords:
SCMISD4004voicestationreportingdevice
1Introduction
Themodernbuildingscaleislargerandlarger,moreandmorehighonthefloor,theelevatortechnicalandqualityrequirementsarealsogettinghigherandhigher.Modernelevatortechnologyhasbeentowardsfaster,morestable,moresecure,morehumanedirectionofrapiddevelopment.
Elevatorvoicestationreportingdeviceistheembodimentofthehumanizeddesignofaspecificperformance.Theelevatorwillbereportedbyvoiceorhasreachedthefloorinformation,therunningstateoftheelevator,welcomespeechandmusic,canavoidwrongelevatorpassengersorfloor,eliminationofpeopletaketheelevatortotheloneliness.
2hardwarecircuitdesign
Thesystemconsistsofsignalacquisitionandisolatingcircuit,SCManditsperipheralcircuit,aspeechchipcircuitcomposedofthreeparts.Theelevatorflooraftersignalacquisitionisolationaftertreatmentsenttosingle-chip,single-chipanalysis,judgment,extracttheeffectiveinformation,andthenbyprocessingoutputsignalstocontrolaspeechchipcircuitreal-timebroadcast.
A2.1signalacquisitionandseparationcircuit
Thenewspaperstationimplementworkneedstocollectsomerelevantinformationtotheoperationoftheelevator,elevatorsecurityrequiresadditionalsystemonelevatordoesnotgenerateinterference,thesignalacquisitionandisolationworkisveryimportant.
Thesystemusedtheelevatorcontrolpaneloneachfloorbutton,elevatorflat-layersignalandswitchsignal,asshownintable1:
Table1theelevatorcontrolsignal
Consideringthesignalvoltagelevelsisnota,forthecollectionofsignalsrequiredbydifferenttreatment.Experimentsshowthat,whenthecollectioncircuitinputresistancein500Kohmfollowingcanresultwhenthesignalvoltagedrop,affecttheelevatorwork;inviewofthis,theauthoradoptsthehighinputresistanceoftheintegratedoperationalamplifiercircuit,thecorrespondingprocessingasshownintable2:
Table2elevatorsignalprocessingandApplications
Afterprocessingthesignalbyaphotoelectriccouplerisolationprocessing,senttomcu.
2.2singlechipmicrocomputeranditsperipheralcircuit
ThesystemisbasedonATMEL'sAT89C51ascontroller,AT89C51P1.0,P1.1,P1.2,P1.3,P1.4andISD4004pinsrespectively1,2,3,28,25footlink,tocontrol(1,2,3,28,25arerespectivelytheISD4004chipselectterminalSS,serialinputserialoutputendMOSI,MISO,SCLK,INTserialclockendinterrupt),theremainingpinsconnectedaftertreatmentoffloorinformation:
including1-23floorinformationsignal,DOWN1,UP1peacelevelDOOR1,DT1,asshowninfigure1
Figure1theAT89C51pinwiringdiagram
2.3speechchipcircuit
BecauseISD4004voicechipofthenormalworkingvoltageforthe3V,andsystemusingthevoltageof12V,weusedtheLM317integratedvoltageregulatorforvoltageconversion(asshowninFigure2).ISD4004audiosignaloutputpinAUDOUTpinthroughafiltercapacitorisconnectedwiththeloudspeaker,AMCAPautomaticallymuteend,throughtheuseofacapacitortoground,asshowninfigure3.
ISD4004seriessinglechipvoicerecording
Thesinglechip8to16minutesthevoicerecording
Thebuilt-inmicrocontrollerserialcommunicationinterface
The3Vsinglesupply
Multiinformationprocessing.
Thecurrent25-30mA,maintainingthecurrent1A
Theelectricityinformationstoredfor100years(typical)
Thehighquality,naturalvoicerestorationtechnology
The100000recordingcycle(typical)
Automaticmutingfunction.
Theinternaladjustmentfreeclock,maychoosetouseanexternalclock
ISD4004series3Vworkingvoltage,arecordingtimeof8to16minutes,goodsoundquality,applicabletomobilephonesandotherportableelectronicproducts.ChipusingCMOStechnology,includingtheoscillator,antialiasingfilter,smoothingfilter,anaudioamplifier,automaticsquelchandhigh-densitymulti-levelflashmemorydisplay.Chipdesignisbasedonalloperationsmustbecontrolledbythemicrocontroller,operationcommandsthroughtheserialcommunicationinterface(SPIorMicrowire)into.Chipusingmultileveldirectanalogstoragetechnology,eachsampledvaluestoredinon-chipflashmemorydirectly,thuscanbeveryreal,naturalreproductionofvoice,music,toneandsoundeffects,toavoidageneralsolidrecordingcircuitduetoquantizationandcompressioncausedbyquantizationnoiseand"metallicsound".Samplingfrequencyfor4,5.3,6.4,8.0kHz,thelowerthefrequency,thelongerthesoundrecording,anddecreased,insideinformationstoredintheflashmemoryincaseofapowerfailure,canbepreservedfor100years(typical),recording100000timesrepeated.
Pindescription
Powersupply:
(VCCA,VCCD)tomakethenoisetoaminimum,chipanaloganddigitalcircuitsusingdifferentpowersupplybus,andarerespectivelyledtotheouterpackageofdifferentpin,analoganddigitalpowersupplyterminalpreferablyrespectively,walktheline,asfaraspossible,incloseproximitytothepowersupplyterminalisconnected,andthedecouplingcapacitorshouldbeasclosetothedevice.
Ground:
(VSSA,VSSD)chipinternalanaloganddigitalcircuitsalsousedifferentground.
Noninvertinganaloginput(IN+ANA)thisisarecordingsignalin-phaseinputterminal.Inputamplifieravailablesingleendedordifferentialdrive.Singleendinputsignal,byacouplingcapacitorinputmaximumamplitude,peak32mV,couplingcapacitanceandtheendofthe3Kohmresistiveinputimpedancedeterminesthechipbandcutofffrequency.Differentialdrivesignalamplitude,maximumpeaktopeakvalueof16mV,ISD33000seriesofthesame.
Reverseanaloginput(ANAIN)differentialdrive,thisisarecordingsignaltotheinvertinginput.Signalthroughthecouplingcapacitorinput,maximumamplitudeofpeak16mV
Audiooutput(AUDOUT)toprovideanaudiooutput,candrive5Kohmload.
Chipselect(SS)thisendislow,namelytotheISD4004chipsendsinstruction,instructionforhighlevelbetweentwo.
Serialinput(MOSI)thisendisaserialinputend,amaincontrollerinserialtherisingedgeoftheclockbeforehalfacycleofdataintheend,fortheISDinput.
Serialoutput(MISO)ISDserialoutput.ISDisnotselected,theendisinahighresistancestate.
Serialclock(SCLK)ISDclockinputterminal,bythemastercontroller,MOSIandMISOforsynchronousdatatransmission.DatainSCLKascendinglatchedontotheISD,infallingoutoftheISD.
Interrupt(/INT)theendisanopendrainoutput.ISDinanyoperation(includingthefast-forward)wasdetectedinEOMorOVF,theendbecomeslowerandmaintain.InterruptstatusinthenextSPIcyclebeginstoclear.InterruptstatusisalsousedRINTinstructionsread.OVFlogo,indicatingtheISDbook,operationhasreachedtheendofthememory.EOMlogo-onlyintheplaybackwasdetectedintheinternalEOMlogo,thestatusbitissetto1.
Rowaddressclock(RAC)opendrainoutputs.EachoftheRACcycleofsaidISDmemoryoperationcarriedoutarow(intheISD4004series
Memorytotalof2400lines).Thesignal175mstomaintainahighlevel,lowlevel25ms.Fastforwardmode,theRAC218.75sishigh,31.25uslow.Theterminalcanbeusedforstoragemanagementtechnology.
Externalclock(XCLK)theendhasaninternalpull-downelement.Chipsamplingclockinthefactorybeforecalibration,errorinthe+1%.Commercialgradechipinthetemperatureandvoltagerange,frequencyvariationin+2.25%.Industrialgradechipinthetemperatureandvoltagerange,frequencyvariationinthe-6/+4%,thenrecommendtheuseofregulatedpowersupply.Ifgreateraccuracyisrequired,fromtheendoftheexternalclockinput(aslistedinthetable).Duetointernalantialiasingsmoothingfilterisset,sotheaboverecommendedclockfrequencyshouldnotchange.Inputclockdutycyclebeofnogreatimportance,duetointernalfirstly,frequencydivider.Innogroundclock,thismustendgrounding.
Automaticsquelch(AMCAP)whentherecordingsignalleveldropstointernallysetathreshold,automaticallymutefunctionsothatthesignalisweak,whichhelpstofeedwithoutthenoisesignal(mute).Usuallytheendofgroundingcapacitanceof1mF,constitutetheinternalsignalpeakvaluedetectioncircuitpart.Detectionofthepeaklevelandinternalsetthresholdforcomparison,automaticmutingfunctionturningpoint.Largesignal,automaticsquelchcircuitwithoutattenuation,attenuationof6dBmute.Thecapacitorofthe1mFalsoaffectautomaticsquelchcircuitforsignalamplituderesponsespeed.TheterminatingVCCAdisableautomaticsquelch.
SPI(serialperipheralinterface)
ISD4004toworkwithSPIserialinterface.TheSPIprotocolisasynchronousserialdatatransmissionprotocol,protocolassumesthatthemicrocontrollerSPIshiftregisteronthefallingedgeofSCLKaction,soastoISD4004,theclockstoprisingalongthelatchpinsoftheMOSIdata,thefallingedgesendsthedatatotheMISOpin.Thespecificcontentoftheagreementfor:
1allserialdatatransmissionbeginsatSSfallingedge.
2.SSduringtransmissionmustbemaintainedaslowlevel,inthetwoinstructionismaintainedatahighlevel.
3dataattherisingedgeoftheclockmoved,atthefallingedgeout.
4.SSgoeslow,theinputcommandsandaddresses,ISDtostartrecordingoperation.
The5instructionformat(8controlcode)isaplus(16bitsoftheaddresscode).
6.ISDanyoperations(includingfast-forward)ifEOMorOVF,istogenerateaninterrupt,theinterruptstatusinthenextSPIthebeginningofthecycleiscl
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