红外遥控系统外文翻译.docx

红外遥控系统外文翻译.docx

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红外遥控系统外文翻译

InfraredRemoteControlSystem

Abstract

Redoutsidedatacorrespondencethetechniquebecurrentlywithinthescopeofworlddriveextensiveusageofakindofwirelessconjunctiontechnique,drivenumeroushardwareandsoftwareplatformsupport.Redoutsidethetransceiverproducthavecostlow,smallscaledturn,thebaudratebequick,pointtopointSSL,befreefromelectromagnetismthousandRaosetc.characteristics,canrealizationinformationatdissimilarityoftheproductfast,convenience,safelyexchangeandtransmission,atshortdistancewirelessdeliveraspecttoownveryobviousofadvantage.Alongwithredoutsidethedatadeliveratechniquemoreandmoremature,thecostdescend,redoutsidethetransceivernecessarilywillgetattheshortdistancecommunicationrealmmoreextensiveofapplication.

Thepurposethatdesignthissystemistransmitcustomer’soperationinformationwithinfraredraysfortransmitmedia,thendemodulateoriginalsignalwithreceivecircuit.Itusecodingchiptomodulatesignalandusedecodingchiptodemodulatesignal.ThecodingchipisPT2262anddecodingchipisPT2272.BothchipsaremadeinTaiwan.MainworkprincipleisthatweprovidetoinputtheinformationforthePT2262withcodingkeyboard.TheinputinformationwascodedbyPT2262andloadingtohighfrequentloadwavewhosefrequentis38kHz,thenmodulateinfraredtransmitdioxideandradiatespaceoutsidewhenitattianenoughpower.Thereceivecircuitreceivethesignalanddemodulateoriginalinformation.TheoriginalsignalwasdecodedbyPT2272,soastodrivesomecircuittoaccomplishcustomer’soperationdemand.

Keywords:

Infraredray；Code；Decoding；LM386；Redoutsidetransceiver

1Introduction

1.1researchthebackgroundandsignificance

InfraredDataCommunicationTechnologyistheworldwideuseofawirelessconnectiontechnology,bythemanyhardwareandsoftwareplatformssupported.Isadatathroughelectricalpulsesandinfraredopticalpulseswitchbetweenthewirelessdatatransceivertechnology.

Infraredtransceiverproductswithlowcost,small,fasttransmissionrate,thepoint-to-pointtransmissionsecurity,notsubjecttoelectromagneticinterferenceandothercharacteristicsthatcanbeachievedbetweenthedifferentproducts,rapid,convenientandsafeexchangeandtransmission,Inshortdistancewirelesstransmissionhaveaverydistinctadvantage.

Infraredtransceiverproductsintheportableproductofagreatrole.Atpresent,theworld's150millionpieceofequipmentusedinfraredtechnologyinelectronicproductsandindustrialequipment.medicalequipmentandotherfieldswidelyused.Forexample,95%ofthenotebookcomputersontheinstallationofinfraredtransceiverinterfacethemajorityofthecellphoneisalsotheallocationofinfraredtransceiverinterface.Withtheexchangeofquantitativedata,infrareddatacommunicationswillenablecellphonedatatransmissionmoreconvenient.Withinfrareddatatransmissiontechnologymatures,perfect,lowcosts,InfraredTransceiverinshortdistancecommunicationswillbemorewidelyapplied.

ThischapterfirstdescribestheinfraredtransceiverICdesignissuestothebackgroundandsignificance.thenbriefedtheinfrareddatacommunicationstechnologyfeaturesandapplications,andinfraredtransceiverproductcharacteristics,domesticandinternationalsituationanddevelopmenttrendofthelastunderinfraredremotetransceiversysteminpracticalapplicationtoestablishataskofdesignorientation.

1.2InfraredRemoteControlTransceiverSystem

Infraredremotecontrolsystemisdividedintosingle-channelandmulti-channelremotecontrol.Onlyacommandsignaltransmissionchannel,calledsingle-channelremotecontrolsystem;withmorethantwoinstructionssignaltransmissionchannelknownasamulti-channelremotecontrolsystem.Relativelysimplesingle-channelremotecontrol,ingeneral,onlyalauncherdirectiveKeyreceiversandonlyonecircuitimplementation.Whileinthereceivingcircuittoaddmorestablememorycircuitsthatcanbeactivatedcommandstolaunchanumberofkey,sothatthereceivercircuitmultistablememorycircuitrepeatedlytochangethestate,torealizemanyofthefunctionalcontrol,Butsuchastateofchangeistheorder.Ifwearetoachieveanarbitrarycontrol,resorttotheuseofmulti-channelremotecontrolsystem.Multi-channelremotecontrolcanberealizedbytheobjectofarbitrarymulti-functionremotecontrol.Asforthechoiceofseveralroutesandwhatcontrolmethods,accordingtotheactualsituation（suchasobject,operationalrequirementsandcostaccounting,etc.）todecide.Generalinfraredremotetransceiversystembyinfraredremotecontroltransmittersignalcoding,infraredremotecontrolsignalreceiversanddecoders（ordecoderchipMCU）andtheexternalcircuitconsistingofthreeparts.Signaltransmitterremotecontrolcodeusedtogeneratepulsesofinfraredemission-drivenoutputinfraredremotecontrolsignal,receivercompletionoftheremotecontrolsignalamplificationanddetection,plasticanddemodulationencodingpulse.Infraredremotecontrolcodedpulseisgoingtoobtainacontinuousserialbinarycode,andformostoftheinfraredtransceiversystem,Thisserialcodeasmicro-controlleroftheremotecontrolinputsignalsfromtheinternalCPUcompletionoftheremotecontrolinstructiondecoder,ontheotherinfraredremotecontroltransceivers,thedesignersofelectronicproducts,Theinternalmicro-controlleroftheremotecontroldecoderdirectiveisnotaccessible.Therefore,peopleareusinginfraredencoder/decoderchipandmicrocontrollerdevelopedvariousgenericinfraredremotetransceiversystem,Invariousequipmentinfraredsignalsbetweenthetransceiver.

Remotetransceiversystemgenerallytransmittersandreceiversiscomposedoftwoparts.Launchersfromthegeneraldirectionkeys,codedinstructionscircuitmodulationcircuit,drivingcircuit,firingcircuitofseveralparts.Whenpressedakey,thedirectivecodingcircuit,inthecorrespondinginstructionsencodedsignal,theencodersignaltothecarriermodulation,Drivenbythepoweramplifiercircuitaftercircuitfiredfromthefieldafterfiringinstructionscodedmodulationsignals.Generalreceiverbythereceivingcircuit,theamplifiercircuit,demodulationcircuits,instructiondecodercircuit,drivingcircuit,circuitimplementationofseveralparts.ReceivingCircuitwilllaunchvehicleshavebeencodedmodulationsignalreceivinginstructionsfrom,andtoenlargeevacuationdemodulationcircuit.Demodulationcircuitwillhavethecodingmodulationsignaldemodulation,namely,reductionofsignalcoding.Theinstructiondecodertotheencodersignaldecoding,Drivenbythefinalcircuittodrivetheimplementationofvariousinstructionscircuittocontroltheoperation.

1.3infraredremotecontroltransceiverproductprofiles

1.3.1infraredremotecontroltransceiverproductstructureandtype

Currentlyinfraredtransceiverinaccordancewiththemodeoftransmissionrateandcanbedividedintofourcategories:

Serialmode,thehighestrateof115.2Kbps;medium-speedmodel:

thehighestrateof0.567Mbpsand1.152Mbps;High-speedmode:

Themaximumrateof16Mbps.

Alsoaccordingtothesizechippowerconsumptioncanbedividedintolow-powerconsumptionandstandardtwocategories,low-powertypenormallyused3Vpowersupply,transmissiondistanceclosertoabout0-30cm,whichiscommonlyusedstandard5Vpowersupply,transmissiondistanceawayatleast1mabove.

1.3.2infraredremotecontroltransmittersofthestatusquoathomeandabroad

Infraredcommunicationtechnologyinthedevelopmentstageandthereareseveralinfraredcommunicationstandards,betweendifferentstandardsforinfraredequipmentcannotinfraredcommunication.Tohavealltheinfraredequipmenttointeroperabilityin1993bymorethan20largemanufacturersinitiatedtheestablishmentofanInfraredDataAssociation（IRDA）unifiedtheinfraredcommunicationstandards,whichiscurrentlywidelyusedininfrareddatacommunicationprotocolsandstandards,alsoknownastheIRDAstandard.

Since1993IRDAsincetheestablishmentoftheInfraredDataAssociationmembershavedevelopedtomorethan150.IRDAstandardsoftheindustryhasbeenwidelyrecognizedandsupported.Hasbeendevelopedwiththeinfraredcommunicationsequipmenthavebeenasmanyas100species.IRmodule,installedcapacityhasreached150millionsets.AlthoughthereisalsoashortdistancewirelessBluetoothtechnology,Butininfraredcommunicationtechnologylowcostandbroadcompatibilityadvantages,Infrareddatacommunicationinthefuturewillstillbeaverylongtimeinherentshort-rangewirelessdatacommunicationsfieldsplayanimportantrole.

1.3.3InfraredTransceiverproductdevelopmenttrend

Invariousinfraredtransceiverproducts,althoughthetransmissionrate,transmissiondistanceandothercharacteristics,Butinfraredtransceiverproductshasbeentowardsimprovingthetransmissionrate,increasethetransmissiondistanceandlowerpowerconsumption,expandinglaunchreceptionangleofdevelopment.Inparticular,asthetechnologydevelopmentandmaturity,themeansoftransmissionismovinginthedirectionofpoint-to-multipoint.Thereforeinfraredremotecontroltransceiverproductshavebroaderprospectsfordevelopment.

2Infraredcommunicationofknowledge

2.1infraredrayfoundationknowledge

2.1.1infraredoutlined

Infraredisactuallyakindofelectromagneticwave.Fromtheanalysisofvariousnaturalcomponentoftheelectromagneticwavereflectedspectrumis:

-ray,x-ray,ultraviolet,visible,infrared,microwaveandradiowave.Fromtheviewpointofform,andtheydidnotseemto,butifthewavelength