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1、InfraredRemoteControlSystemAbstractRedoutsidedatacorrespondencethetechniquebecurrentlywithinthescopeofworlddriveextensiveusageofakindofwirelessconjunctiontechnique,drivenumeroushardwareandsoftwareplatformsupport.Redoutsidethetransceiverproducthavecostlow,s
2、mallscaledturn,thebaudratebequick,pointtopointSSL,befreefromelectromagnetismthousandRaosetc.characteristics,canrealizationinformationatdissimilarityoftheproductfast,convenience,safelyexchangeandtransmission,atshortdistancewirelessdeliveraspecttoownveryobvi
3、ousofadvantage.Alongwithredoutsidethedatadeliveratechniquemoreandmoremature,thecostdescend,redoutsidethetransceivernecessarilywillgetattheshortdistancecommunicationrealmmoreextensiveofapplication.Thepurposethatdesignthissystemistransmitcustomer’soperationi
4、nformationwithinfraredraysfortransmitmedia,thendemodulateoriginalsignalwithreceivecircuit.Itusecodingchiptomodulatesignalandusedecodingchiptodemodulatesignal.ThecodingchipisPT2262anddecodingchipisPT2272.BothchipsaremadeinTaiwan.Mainworkprincipleisthatwepro
5、videtoinputtheinformationforthePT2262withcodingkeyboard.TheinputinformationwascodedbyPT2262andloadingtohighfrequentloadwavewhosefrequentis38kHz,thenmodulateinfraredtransmitdioxideandradiatespaceoutsidewhenitattianenoughpower.Thereceivecircuitreceivethesign
6、alanddemodulateoriginalinformation.TheoriginalsignalwasdecodedbyPT2272,soastodrivesomecircuittoaccomplishcustomer’soperationdemand.Keywords:Infraredray；Code；Decoding；LM386；Redoutsidetransceiver1Introduction1.1researchthebackgroundandsignificanceInfraredDat
7、aCommunicationTechnologyistheworldwideuseofawirelessconnectiontechnology,bythemanyhardwareandsoftwareplatformssupported.Isadatathroughelectricalpulsesandinfraredopticalpulseswitchbetweenthewirelessdatatransceivertechnology.Infraredtransceiverproductswithlo
8、wcost,small,fasttransmissionrate,thepoint-to-pointtransmissionsecurity,notsubjecttoelectromagneticinterferenceandothercharacteristicsthatcanbeachievedbetweenthedifferentproducts,rapid,convenientandsafeexchang
