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1、InfraredRemoteControlSystemAbstractRedoutsidedatacorrespondencethetechniquebecurrentlywithinthescopeofworlddriveextensiveusageofakindofwirelessconjunctiontechnique,drivenumeroushardwareandsoftwareplatformsupport.Redoutsidethetransceiverproducthavecostlow,smallscaledt
2、urn,thebaudratebequick,pointtopointSSL,befreefromelectromagnetismthousandRaosetc.characteristics,canrealizationinformationatdissimilarityoftheproductfast,convenience,safelyexchangeandtransmission,atshortdistancewirelessdeliveraspecttoownveryobviousofadvantage.Alongwi
3、thredoutsidethedatadeliveratechniquemoreandmoremature,thecostdescend,redoutsidethetransceivernecessarilywillgetattheshortdistancecommunicationrealmmoreextensiveofapplication.Thepurposethatdesignthissystemistransmitcustomer’soperationinformationwithinfraredraysfortran
4、smitmedia,thendemodulateoriginalsignalwithreceivecircuit.Itusecodingchiptomodulatesignalandusedecodingchiptodemodulatesignal.ThecodingchipisPT2262anddecodingchipisPT2272.BothchipsaremadeinTaiwan.MainworkprincipleisthatweprovidetoinputtheinformationforthePT2262withcod
5、ingkeyboard.TheinputinformationwascodedbyPT2262andloadingtohighfrequentloadwavewhosefrequentis38kHz,thenmodulateinfraredtransmitdioxideandradiatespaceoutsidewhenitattianenoughpower.Thereceivecircuitreceivethesignalanddemodulateoriginalinformation.Theoriginalsignalwas
6、decodedbyPT2272,soastodrivesomecircuittoaccomplishcustomer’soperationdemand.Keywords:Infraredray;Code;Decoding;LM386;Redoutsidetransceiver1Introduction1.1researchthebackgroundandsignificanceInfraredDataCommunicationTechnologyistheworldwideuseofawirelessconnectiontech
7、nology,bythemanyhardwareandsoftwareplatformssupported.Isadatathroughelectricalpulsesandinfraredopticalpulseswitchbetweenthewirelessdatatransceivertechnology.Infraredtransceiverproductswithlowcost,small,fasttransmissionrate,thepoint-to-pointtransmissionsecurity,notsub
8、jecttoelectromagneticinterferenceandothercharacteristicsthatcanbeachievedbetweenthedifferentproducts,rapid,convenientandsafeexchang