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1英文INFRAREDREMOTECONTROLSYSTEMABSTRACTREDOUTSIDEDATACORRESPONDENCETHETECHNIQUEBECURRENTLYWITHINTHESCOPEOFWORLDDRIVEEXTENSIVEUSAGEOFAKINDOFWIRELESSCONJUNCTIONTECHNIQUE,DRIVENUMEROUSHARDWAREANDSOFTWAREPLATFORMSUPPORTREDOUTSIDETHETRANSCEIVERPRODUCTHAVECOSTLOW,SMALLSCALEDTURN,THEBAUDRATEBEQUICK,POINTTOPOINTSSL,BEFREEFROMELECTROMAGNETISMTHOUSANDRAOSETCCHARACTERISTICS,CANREALIZATIONINFORMATIONATDISSIMILARITYOFTHEPRODUCTFAST,CONVENIENCE,SAFELYEXCHANGEANDTRANSMISSION,ATSHORTDISTANCEWIRELESSDELIVERASPECTTOOWNVERYOBVIOUSOFADVANTAGEALONGWITHREDOUTSIDETHEDATADELIVERATECHNIQUEMOREANDMOREMATURE,THECOSTDESCEND,REDOUTSIDETHETRANSCEIVERNECESSARILYWILLGETATTHESHORTDISTANCECOMMUNICATIONREALMMOREEXTENSIVEOFAPPLICATIONTHEPURPOSETHATDESIGNTHISSYSTEMISTRANSMITCUSTOMERSOPERATIONINFORMATIONWITHINFRAREDRAYSFORTRANSMITMEDIA,THENDEMODULATEORIGINALSIGNALWITHRECEIVECIRCUITITUSECODINGCHIPTOMODULATESIGNALANDUSEDECODINGCHIPTODEMODULATESIGNALTHECODINGCHIPISPT2262ANDDECODINGCHIPISPT2272BOTHCHIPSAREMADEINTAIWANMAINWORKPRINCIPLEISTHATWEPROVIDETOINPUTTHEINFORMATIONFORTHEPT2262WITHCODINGKEYBOARDTHEINPUTINFORMATIONWASCODEDBYPT2262ANDLOADINGTOHIGHFREQUENTLOADWAVEWHOSEFREQUENTIS38KHZ,THENMODULATEINFRAREDTRANSMITDIOXIDEANDRADIATESPACEOUTSIDEWHENITATTIANENOUGHPOWERTHERECEIVECIRCUITRECEIVETHESIGNALANDDEMODULATEORIGINALINFORMATIONTHEORIGINALSIGNALWASDECODEDBYPT2272,SOASTODRIVESOMECIRCUITTOACCOMPLISHCUSTOMERSOPERATIONDEMANDKEYWORDSINFRAREDRAY；CODE；DECODING；LM386；REDOUTSIDETRANSCEIVER1INTRODUCTION11RESEARCHTHEBACKGROUNDANDSIGNIFICANCEINFRAREDDATACOMMUNICATIONTECHNOLOGYISTHEWORLDWIDEUSEOFAWIRELESSCONNECTIONTECHNOLOGY,BYTHEMANYHARDWAREANDSOFTWAREPLATFORMSSUPPORTEDISADATATHROUGHELECTRICALPULSESANDINFRAREDOPTICALPULSESWITCHBETWEENTHEWIRELESSDATATRANSCEIVERTECHNOLOGYINFRAREDTRANSCEIVERPRODUCTSWITHLOWCOST,SMALL,FASTTRANSMISSIONRATE,THEPOINTTOPOINTTRANSMISSIONSECURITY,NOTSUBJECTTOELECTROMAGNETICINTERFERENCEANDOTHERCHARACTERISTICSTHATCANBEACHIEVEDBETWEENTHEDIFFERENTPRODUCTS,RAPID,CONVENIENTANDSAFEEXCHANGEANDTRANSMISSION,INSHORTDISTANCEWIRELESSTRANSMISSIONHAVEAVERYDISTINCTADVANTAGEINFRAREDTRANSCEIVERPRODUCTSINTHEPORTABLEPRODUCTOFAGREAT2ROLEATPRESENT,THEWORLDS150MILLIONPIECEOFEQUIPMENTUSEDINFRAREDTECHNOLOGYINELECTRONICPRODUCTSANDINDUSTRIALEQUIPMENTMEDICALEQUIPMENTANDOTHERFIELDSWIDELYUSEDFOREXAMPLE,95OFTHENOTEBOOKCOMPUTERSONTHEINSTALLATIONOFINFRAREDTRANSCEIVERINTERFACETHEMAJORITYOFTHECELLPHONEISALSOTHEALLOCATIONOFINFRAREDTRANSCEIVERINTERFACEWITHTHEEXCHANGEOFQUANTITATIVEDATA,INFRAREDDATACOMMUNICATIONSWILLENABLECELLPHONEDATATRANSMISSIONMORECONVENIENTWITHINFRAREDDATATRANSMISSIONTECHNOLOGYMATURES,PERFECT,LOWCOSTS,INFRAREDTRANSCEIVERINSHORTDISTANCECOMMUNICATIONSWILLBEMOREWIDELYAPPLIEDTHISCHAPTERFIRSTDESCRIBESTHEINFRAREDTRANSCEIVERICDESIGNISSUESTOTHEBACKGROUNDANDSIGNIFICANCETHENBRIEFEDTHEINFRAREDDATACOMMUNICATIONSTECHNOLOGYFEATURESANDAPPLICATIONS,ANDINFRAREDTRANSCEIVERPRODUCTCHARACTERISTICS,DOMESTICANDINTERNATIONALSITUATIONANDDEVELOPMENTTRENDOFTHELASTUNDERINFRAREDREMOTETRANSCEIVERSYSTEMINPRACTICALAPPLICATIONTOESTABLISHATASKOFDESIGNORIENTATION毕业设计论文代做平台580毕业设计网是专业代做团队也有大量毕业设计成品提供参考WWWBYSJ580COMQQ344964997412INFRAREDREMOTECONTROLTRANSCEIVERSYSTEMINFRAREDREMOTECONTROLSYSTEMISDIVIDEDINTOSINGLECHANNELANDMULTICHANNELREMOTECONTROLONLYACOMMANDSIGNALTRANSMISSIONCHANNEL,CALLEDSINGLECHANNELREMOTECONTROLSYSTEMWITHMORETHANTWOINSTRUCTIONSSIGNALTRANSMISSIONCHANNELKNOWNASAMULTICHANNELREMOTECONTROLSYSTEMRELATIVELYSIMPLESINGLECHANNELREMOTECONTROL,INGENERAL,ONLYALAUNCHERDIRECTIVEKEYRECEIVERSANDONLYONECIRCUITIMPLEMENTATIONWHILEINTHERECEIVINGCIRCUITTOADDMORESTABLEMEMORYCIRCUITSTHATCANBEACTIVATEDCOMMANDSTOLAUNCHANUMBEROFKEY,SOTHATTHERECEIVERCIRCUITMULTISTABLEMEMORYCIRCUITREPEATEDLYTOCHANGETHESTATE,TOREALIZEMANYOFTHEFUNCTIONALCONTROL,BUTSUCHASTATEOFCHANGEISTHEORDERIFWEARETOACHIEVEANARBITRARYCONTROL,RESORTTOTHEUSEOFMULTICHANNELREMOTECONTROLSYSTEMMULTICHANNELREMOTECONTROLCANBEREALIZEDBYTHEOBJECTOFARBITRARYMULTIFUNCTIONREMOTECONTROLASFORTHECHOICEOFSEVERALROUTESANDWHATCONTROLMETHODS,ACCORDINGTOTHEACTUALSITUATIONSUCHASOBJECT,OPERATIONALREQUIREMENTSANDCOSTACCOUNTING,ETCTODECIDEGENERALINFRAREDREMOTETRANSCEIVERSYSTEMBYINFRAREDREMOTECONTROLTRANSMITTERSIGNALCODING,INFRAREDREMOTECONTROLSIGNALRECEIVERSANDDECODERSORDECODERCHIPMCUANDTHEEXTERNALCIRCUITCONSISTINGOFTHREEPARTSSIGNALTRANSMITTERREMOTECONTROLCODEUSEDTOGENERATEPULSESOFINFRAREDEMISSIONDRIVENOUTPUTINFRAREDREMOTECONTROLSIGNAL,RECEIVERCOMPLETIONOFTHEREMOTECONTROLSIGNALAMPLIFICATIONANDDETECTION,PLASTICANDDEMODULATIONENCODINGPULSEINFRAREDREMOTECONTROLCODEDPULSEISGOINGTOOBTAINACONTINUOUSSERIALBINARYCODE,AND3FORMOSTOFTHEINFRAREDTRANSCEIVERSYSTEM,THISSERIALCODEASMICROCONTROLLEROFTHEREMOTECONTROLINPUTSIGNALSFROMTHEINTERNALCPUCOMPLETIONOFTHEREMOTECONTROLINSTRUCTIONDECODER,ONTHEOTHERINFRAREDREMOTECONTROLTRANSCEIVERS,THEDESIGNERSOFELECTRONICPRODUCTS,THEINTERNALMICROCONTROLLEROFTHEREMOTECONTROLDECODERDIRECTIVEISNOTACCESSIBLETHEREFORE,PEOPLEAREUSINGINFRAREDENCODER/DECODERCHIPANDMICROCONTROLLERDEVELOPEDVARIOUSGENERICINFRAREDREMOTETRANSCEIVERSYSTEM,INVARIOUSEQUIPMENTINFRAREDSIGNALSBETWEENTHETRANSCEIVERREMOTETRANSCEIVERSYSTEMGENERALLYTRANSMITTERSANDRECEIVERSISCOMPOSEDOFTWOPARTSLAUNCHERSFROMTHEGENERALDIRECTIONKEYS,CODEDINSTRUCTIONSCIRCUITMODULATIONCIRCUIT,DRIVINGCIRCUIT,FIRINGCIRCUITOFSEVERALPARTSWHENPRESSEDAKEY,THEDIRECTIVECODINGCIRCUIT,INTHECORRESPONDINGINSTRUCTIONSENCODEDSIGNAL,THEENCODERSIGNALTOTHECARRIERMODULATION,DRIVENBYTHEPOWERAMPLIFIERCIRCUITAFTERCIRCUITFIREDFROMTHEFIELDAFTERFIRINGINSTRUCTIONSCODEDMODULATIONSIGNALSGENERALRECEIVERBYTHERECEIVINGCIRCUIT,THEAMPLIFIERCIRCUIT,DEMODULATIONCIRCUITS,INSTRUCTIONDECODERCIRCUIT,DRIVINGCIRCUIT,CIRCUITIMPLEMENTATIONOFSEVERALPARTSRECEIVINGCIRCUITWILLLAUNCHVEHICLESHAVEBEENCODEDMODULATIONSIGNALRECEIVINGINSTRUCTIONSFROM,ANDTOENLARGEEVACUATIONDEMODULATIONCIRCUITDEMODULATIONCIRCUITWILLHAVETHECODINGMODULATIONSIGNALDEMODULATION,NAMELY,REDUCTIONOFSIGNALCODINGTHEINSTRUCTIONDECODERTOTHEENCODERSIGNALDECODING,DRIVENBYTHEFINALCIRCUITTODRIVETHEIMPLEMENTATIONOFVARIOUSINSTRUCTIONSCIRCUITTOCONTROLTHEOPERATION13INFRAREDREMOTECONTROLTRANSCEIVERPRODUCTPROFILES131INFRAREDREMOTECONTROLTRANSCEIVERPRODUCTSTRUCTUREANDTYPECURRENTLYINFRAREDTRANSCEIVERINACCORDANCEWITHTHEMODEOFTRANSMISSIONRATEANDCANBEDIVIDEDINTOFOURCATEGORIESSERIALMODE,THEHIGHESTRATEOF1152KBPSMEDIUMSPEEDMODELTHEHIGHESTRATEOF0567MBPSAND1152MBPSHIGHSPEEDMODETHEMAXIMUMRATEOF16MBPSALSOACCORDINGTOTHESIZECHIPPOWERCONSUMPTIONCANBEDIVIDEDINTOLOWPOWERCONSUMPTIONANDSTANDARDTWOCATEGORIES,LOWPOWERTYPENORMALLYUSED3VPOWERSUPPLY,TRANSMISSIONDISTANCECLOSERTOABOUT030CM,WHICHISCOMMONLYUSEDSTANDARD5VPOWERSUPPLY,TRANSMISSIONDISTANCEAWAYATLEAST1MABOVE132INFRAREDREMOTECONTROLTRANSMITTERSOFTHESTATUSQUOATHOMEANDABROADINFRAREDCOMMUNICATIONTECHNOLOGYINTHEDEVELOPMENTSTAGEANDTHEREARESEVERALINFRAREDCOMMUNICATIONSTANDARDS,BETWEENDIFFERENTSTANDARDSFORINFRAREDEQUIPMENTCANNOTINFRAREDCOMMUNICATIONTOHAVEALLTHEINFRAREDEQUIPMENTTOINTEROPERABILITYIN1993BYMORE4THAN20LARGEMANUFACTURERSINITIATEDTHEESTABLISHMENTOFANINFRAREDDATAASSOCIATIONIRDAUNIFIEDTHEINFRAREDCOMMUNICATIONSTANDARDS,WHICHISCURRENTLYWIDELYUSEDININFRAREDDATACOMMUNICATIONPROTOCOLSANDSTANDARDS,ALSOKNOWNASTHEIRDASTANDARDSINCE1993IRDASINCETHEESTABLISHMENTOFTHEINFRAREDDATAASSOCIATIONMEMBERSHAVEDEVELOPEDTOMORETHAN150IRDASTANDARDSOFTHEINDUSTRYHASBEENWIDELYRECOGNIZEDANDSUPPORTEDHASBEENDEVELOPEDWITHTHEINFRAREDCOMMUNICATIONSEQUIPMENTHAVEBEENASMANYAS100SPECIESIRMODULE,INSTALLEDCAPACITYHASREACHED150MILLIONSETSALTHOUGHTHEREISALSOASHORTDISTANCEWIRELESSBLUETOOTHTECHNOLOGY,BUTININFRAREDCOMMUNICATIONTECHNOLOGYLOWCOSTANDBROADCOMPATIBILITYADVANTAGES,INFRAREDDATACOMMUNICATIONINTHEFUTUREWILLSTILLBEAVERYLONGTIMEINHERENTSHORTRANGEWIRELESSDATACOMMUNICATIONSFIELDSPLAYANIMPORTANTROLE133INFRAREDTRANSCEIVERPRODUCTDEVELOPMENTTRENDINVARIOUSINFRAREDTRANSCEIVERPRODUCTS,ALTHOUGHTHETRANSMISSIONRATE,TRANSMISSIONDISTANCEANDOTHERCHARACTERISTICS,BUTINFRAREDTRANSCEIVERPRODUCTSHASBEENTOWARDSIMPROVINGTHETRANSMISSIONRATE,INCREASETHETRANSMISSIONDISTANCEANDLOWERPOWERCONSUMPTION,EXPANDINGLAUNCHRECEPTIONANGLEOFDEVELOPMENTINPARTICULAR,ASTHETECHNOLOGYDEVELOPMENTANDMATURITY,THEMEANSOFTRANSMISSIONISMOVINGINTHEDIRECTIONOFPOINTTOMULTIPOINTTHEREFOREINFRAREDREMOTECONTROLTRANSCEIVERPRODUCTSHAVEBROADERPROSPECTSFORDEVELOPMENT2INFRAREDCOMMUNICATIONOFKNOWLEDGE21INFRAREDRAYFOUNDATIONKNOWLEDGE211INFRAREDOUTLINEDINFRAREDISACTUALLYAKINDOFELECTROMAGNETICWAVEFROMTHEANALYSISOFVARIOUSNATURALCOMPONENTOFTHEELECTROMAGNETICWAVEREFLECTEDSPECTRUMISRAY,XRAY,ULTRAVIOLET,VISIBLE,INFRARED,MICROWAVEANDRADIOWAVEFROMTHEVIEWPOINTOFFORM,ANDTHEYDIDNOTSEEMTO,BUTIFTHEWAVELENGTHINDESCENDINGORDER,ANDWEWILLFINDHIMALLTHEONLYVISIBLELIGHTSPECTRUMOFTHEENTIRE038M076MSOLONGLITTLEAREA,ANDADJACENTTOTHEVISIBLELIGHTANDINFRAREDINCLUDINGTHEFARINFRARED,MIDINFRAREDANDNEARINFRAREDFOREIGNACCOUNTSFORTHESPECTRUMOF076M1000MOFAMAJORWHICHMICRONWAVELENGTHRANGEALSOINCLUDESUV,VISIBLE,NEARINFRARED,MIDINFRAREDANDFARINFRARED,MICROWAVEFROMTHEABOVEANALYSISSHOWSTHATINFRAREDISAVERYRICHSPECTRUMRESOURCES,ITCURRENTLYHASINPRODUCTION,LIFE,MILITARY,MEDICAL,ANDOTHERASPECTSHAVEBEENWIDELYUSED,SUCHASINFRAREDHEATING,MEDICALINFRARED,INFRAREDCOMMUNICATION,INFRAREDCAMERA,INFRAREDREMOTECONTROL,ANDSOONINFRAREDREMOTECONTROLISTHE5MANYAPPLICATIONSOFINFRAREDPARTOFTHECURRENTHOUSEHOLDAPPLIANCESWIDELYUSEDINTVREMOTECONTROL,VCRREMOTECONTROL,VCDREMOTECONTROL,HIGHFIDELITYAUDIOREMOTECONTROL,AREUSEDINFRAREDREMOTECONTROL,ITALLOWSTHECONTROLOFTHESEAPPLIANCESHAVEBECOMEVERYEASY212INFRAREDPROPERTIESINFRAREDLIESBETWEENVISIBLELIGHTANDMICROWAVEAWAVE,ITISWITHCERTAINCLINICALCHARACTERISTICSOFTHEWAVEINTHENEARINFRARED,VISIBLELIGHTANDITSADJACENT,ITISVISIBLEINCERTAINCHARACTERISTICS,SUCHASSTRAIGHTLINETRANSMISSION,REFLECTION,REFRACTION,SCATTERING,DIFFRACTION,CANBECERTAINOBJECTSANDCANBEABSORBEDTHROUGHTHELENSOFTHEIRFOCUSINGINTHEFARINFRAREDREGION,OWINGTOITSNEIGHBORINGMICROWAVE,ITHASSOMECHARACTERISTICSOFMICROWAVE,IFASTRONGPENETRATINGPOWERANDCANRUNTHROUGHSOMEOPAQUESUBSTANCESSINCEINANYOBJECT,NATURALPROFESSION,REGARDLESSOFWHETHERITSOWNLUMINESCENCEREFERRINGTOVISIBLELIGHT,ASLONGASTHETEMPERATUREISABOVEABSOLUTEZERO273C,MOMENTWILLBEKEPTAR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