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1、WirelessRemoteControlModernremotecontrol,mainlybytheelectriccircuitboardandusedtogeneratedifferentmessagescomposedofabutton.Today,wirelessremotecontrolhasbeeninthelifeofagrowingnumberofapplications,givingpeopleagreatconvenience.Withadvancesintechnologywirelessremotecontrolisalsoextended
2、tomanyspecies,simplyhavetwokindsofcommononeistheinfraredremotecontrolmodelusedhomeappliances(IRRemoteControl),theotherisanti-theftalarmdevices,doors,windowsremotecontrol,carsocommonlyusedradio-controlledremotecontrolmode.1.Thetypeofwirelessremotecontrol1.1InfraredremotecontrolHomeInfrar
3、edremotecontrolInfraredremotecontrol(IRRemoteControl)istouseawavelengthof0.76~1.5μmnear-infraredtotransferbetweentheremotecontroldevicecontrolsignal.Infraredremotecontrolsystemcommonlyuseditnormallytransmitandreceivetwoparts.ThemaincomponentsforthetransmitterIRLED.Itisactuallyaspecialli
4、ght-emittingdiodes,duetoitsinternalmaterialdifferentfromtheordinarylightemittingdiodes,andthusacertainvoltageappliedatitsends,itwillsendtheinfraredratherthanvisiblelight.Currentheavyuseofinfraredlight-emittingdiodeinfraredwavelengthof940nmissuedaboutthesameshapeandgenerallight-emittingd
5、iode,justdifferentcolor.Receivingpartofthemaincomponentsoftheinfraredreceiverdiodesgenerallyhaveroundandsquare.Inpractice,togiveadditionalinfraredreceiverdiodereversebias,itcanwork,thatis,infraredreceiverdiodeinreverseapplicationofthecircuitisused,soastoobtainhighsensitivity.Finishedinf
6、raredreceivingroughlytwopackages:onewithmetalshielding;aplasticpackage.Havethreepins,whichpoweris(VDD),powersupplynegative(GND)anddataoutput(VOUT).Infraredreceivingthepinarrangementdifferentfordifferentmodels,refertomanufacturer'sinstructions.Finishedthefirsthastheadvantageofinfraredrec
7、eiverdoesnotrequirecomplexdebuggingandshellshield,touseasatransistor,veryconvenient.However,whenattentiontotheuseofinfraredreceiverfinishedthefirstcarrierfrequency.Characterizedbyinfraredremotecontroldoesnotaffectthesurroundingenvironment,withoutinterferingwithotherelectricaleq
