单片机红外遥控外文翻译.docx

单片机红外遥控外文翻译.docx

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单片机红外遥控外文翻译

InfraredRemoteAndChipsAreIntroduced

People'seyescanseethevisiblewavelengthfromlongtoshortaccordingtothearrangement,inordertored,orange,yellow,green,green,blue,violet.Oneoftheredwavelengthsfor0.62~0.76mount,Purpleis0.38wavelengthrange~mount.Purpleisshorterthanthewavelengthoflightcalledultravioletray,redwavelengthsoflightisIongerthanthatofinfraredlight.Infraredremotecontrolistousewavelengthfor0.76~1.5mountbetweenthenearinfraredtotransfercontrolsignal.

Commonlyusedinfraredremotecontrolsystemofgeneralpointstransmitandreceivetwoparts.Themaincomponentpartforthelaunchofinfraredlightemittingdiode.Itisactuallyaspeciallightemittingdiode,duetoitsinternalmaterialdiffersfromordinarylightemittingdiode,resultinginitsendsoncertainvoltage,itisaratherinfraredlight.Useofinfraredlightemittingdiodetheinfraredwavelengths,for940nmappearaneeandordinary,justthesamelightemittingdiodefivedifferentcolors.Infraredlightemittingdiodegenerallyhaveblackandblue,transparentthreecolors.Judgmentofinfraredlightemittingdiodeandjudgmentmethod,usingamillimetertoordinarydiodeelectricblockmeasureofinfraredlightemittingdiode,reverseresistanee.Theinfraredlightemittingdiodeluminescenceefficiencytousespecialinstrumenttomeasureprecise,anduseonlyspareconditionstopullawayfromroughlyjudgment.Receivingpartofinfraredreceivingtubeisaphotosensitivediode.

Inactualapplicationofitreceivingdiodetoreversebias,itcanworknormally,i.e.,theinfraredreceivingcircuitapplicationindiodeisusedtoreverse,highersensitivity.Infraredreceivingdiodeusuallyhavetworoundandrectangular.Duetothepowerofinfraredlightemittingdiode（orlesscommonly100mW）,soirreceivingdiodereceivedsignalsisweak,sowillincreasehigh-gainones.theamplifiercircuit.

IncommonCX20106A,etc.PC1373Hmooninfraredreceivingspecialamplifiercircuit.Inrecentyearsbothamateurorformalproducts,mostlyusinginfraredreceivingheadfinished.Theheadofinfraredreceivingproductpackagesgenerallyhastwokinds:

onekindUSESsheetshielding,Akindofplasticpackaging.Therearethreepin,namelythepoweris（VDD）,powernegative（GND）anddataoutput（VOorOUT）.Infraredreceivingheadfootarrangementfortypesvaried,manufacturer'sinstructions.Finishedtheadvantagesofinfraredreceivingheadisnotinneedofsophisticateddebuggingandshellscreen,useriseasatransistor,veryconvenient.Butwhenusedintheinfraredreceivingattentionfinishedfirstcarrierfrequency.

Infraredremotecommoncarrierfrequencyfor38kHz,thisistransmittedbyusing455kHzTaoZhentodecide.Atthelaunchofcrystalswereintegerfrequency,frequencycoefficients,socommonly12,so455kHz宁12hundredthkHz38kHzhundredth379,000.Someremotecontrolsystemadopts36kHz,56kHz,etc.general40kHzlaunchedbythecrystalsofoscillationfrequencytodecide.

Infraredremotecharacteristicisnotinflueneethesurroundingenvironmentanddoesnotinterferewithotherelectricequipment.Duetoitscannotpenetratewalls,sotheroomcanusecommonhouseholdapplianeeofremotecontrolwithoutmutualinterferenee,Circuittestingissimple,aslongasgivencircuitconnection,generallydoesnotneedanycommissioningcanwork,Decodingeasily,canundertakemultipleremotecontrol.Becauseeachmanufacturerproducesagreatdealofinfraredremoteapplication-specificintegratedcircuit,whenneedpressdiagramsojip.Therefore,theinfraredremotenowinhouseholdappliances,indoorclose（lessthan10meters）intheremotecontroliswidelyused.

Multipleinfraredremotecontrolsystemofinfraredemissioncontrolbuttons,therearemanypartsgeneralrepresentativeofdifferentcontrolfunction.Whenpressedabutton,correspondinglyinthereceiverwithdifferentoutput.

Receivingtheoutputstatecanberoughlydividedintopulse,level,selflockingandinterlock,datafiveforms."Thepulseoutputisaccordingtolaunch"whenthebutton,thereceiveroutputterminalsoutputcorresponding"effective",apulsewidth100msingeneral."Level"referstotheoutputlaunchpressbutton,thereceiveroutputcorrespondingoutputlevel","effectivetransmittoloosenthereceiver"level"disappears.This"effectivepulse"and"effective",maybeofhighlevelislow,andmayalsodependontheoutputcorrespondingstaticstate,suchasfeetforlow,static"high"foreffective,Asforthestatic,"low"higheffective.Inmostcases,"high"foreffective."Sincethelock"referstolaunchtheoutputofeachtimeyoupressthebutton,areceiveroutputcorrespondingchange,namelyoriginallyastateforhighlevelintoalowlevel,originallyforlowlevelintohighlevel.Theoutputpowerswitchandmuteascontroletc.Sometimesalsocalledtheoutputformfor"invert"."Theinterlock"referstomultipleoutputseachoutput,atthesametimeonlyoneoutput.TheTVsetsofthiscaseisselected,theotherislikethelightandsoundinputspeed,etc.

"Data"referstolaunchtheoutputsomekey,useafewoutputformabinarynumber,torepresentdifferentkeystroke.

Normally,thereceiverexceptafewdataoutput,butalsoa"valid"outputdata,sothetimelytocollectdata.Thisoutputformwithsingle-chipmicrocomputerorarecommonlyusedinterface.Inadditiontotheaboveoutputformoutside,stillhavea"latch"and"temporary"twoforms.Theso-called"latch"referstolaunchtheoutputsignalofeachhair,thereceiveroutputcorresponding","newstoreuntilyoureceivesignals."Temporary"outputandtheintroductionof"level"outputissimilar.

Remotedistance（RemoteControleffectofRFRemoteControldistance）arethemajorfactorsasfollows:

l.launchedinpowertransmissionpower:

whiledistanee,butgreatpowerconsumption,easytogeneratenterferenee.

2.andreceivingthereceiversensitivity,receiving,remotedistaneeincreasedsensitivitytoimprove,buteasytocausedisturbaneemaloperationorabuse.

3.antenna,usinglinearantenna,andparallel,remotedistanee,butoccupiesalargespace,inusetheantennaspin,pullcanincreasetheremotedistanee.

4.andthehigherheight:

antenna,remotefarther,butbyobjectiveeonditions.

5.andstop:

currentuseofwirelessremoteuseofUHFbandstipulatedbythestate,thepropagationcharacteristicsofapproximatelineartransmission,light,small,transmittersandreceiversdiffractionbetweensuchaswallsareblockingwillgreatlydiscountedremotedistanee,ifisreinforcedeoncretewalls,duetotheabsorptioneffecteonductor,radiowaves.

Consideringthedesignofhardwarevolumesmalltobeembeddedintheremotecontrol,sowechose20footsingle-chipchipAT89C2051.Belowistheintroductionofthefunction.

（1）AT89C2051internalstructureandperformanee

AT89C2051isabyteflash2Kwithprogrammableread-onlymemorycanbeerasedEEPROM（lowvoltage,highperformaneeofeightCMOSmicrocomputer.ItadoptsATMELofhigh-densitynon-volatilestoragetechnologymanufacturingandindustrialstandardMCS-51instructionsetandlead.ThroughthecombinationofsinglechipingeneralCPL1andflashmemory,isastrongATMELAT89C2051microcomputer,itsapplicationinmanyembeddedcontrolprovidesahighlyflexibleandlowcostsolutions.Thecompatiblewith8051AT89C2051isCHMOSmicroeontroller,theFlashmemorycapacityfor2KB.AndCHMOS80C51process,havetwokindsofleisureandpowersavingoperationmode.Theperformaneeisasfollows.

5.CUP,2KBFlashmemory,

Workingvoltagerange2.7-6V,128KBdatastorage.Thestaticworkingway:

0-24MHz,15rootinput/outputline.

Aprogrammableserial,2a16-bittiming/counters.Thereisasliceofinsideprecisionsimulationcomparator,5theinterruptsources,2priority.

ProgrammableserialUARTchannel,DirectlyLEDdriveroutput,TheinternalstructureofAT89C2051isshowninfigure1.

Figure1AT89C2051interiorstructure

（2）AT89C2051chippinandfunction

Inordertoadapttotherequirementofintelligentinstrument,embeddedinthechipfootAT89C2051simplifiedconfiguration,asshowninfigureb.Themajorchangesto:

（1）theleadfootfrom20to40wires,

（2）increasedasimulatedcomparator.=DiagrambAT89C2051footfigure.

AT89C2051pinfunction:

1.theVCC:

voltage.

1.toGND.

1.P1mouth:

P1mouthisan8-bittwo-wayI/Oport.P1.2~P1.7mouthpintheinternalresistaneeprovides.P1.0andP1.1requirementsontheexternalpull-upresistors.P1.0andP1.1alsoseparatelyaspieceinsideprecisionsimulationcomparatorwithinput（AIN0）andreversed-phaseinput（AIN1）.OutputbuffercanabsorbtheP1mouth20mAcurrentandcandirectlyLEDdisplaydriver.WhenP1mouthpinintoa"1",canmakeitsinput.WhenthepinP1.2~P1.7asinputandexternaldown,theywillbefortheinternalresistaneeandflowcurrent（IIL）.InflashP1mouthduringtheprocedureandprogramcodedatareceivingcalibration.

2.P3:

theP3.0~P3.5P3,P3.7istheinternalresistancewithseventwowayI/0lead.P3.6forfixedinputspieceinsidethecomparatoroutputsignalanditasageneralI/Ofootandinaccessible.P3mouthbuffercanabsorb20mAcurrent.WhenP3mouthpininto"1",theyaretheinternalresistaneecanpushandinput.Asinput,andthelowexternalP3mouthpinpull-upresistorsandwillusecurrent（IIL）outflow.P3mouthstillusedtoimplementthevariousfunetions,suchasAT89C2051shownintableP3mouthstillreceivesomeforflashmemoryprogrammingandca