红外遥控及芯片论文中英文资料对照外文翻译Word格式文档下载.docx

红外遥控及芯片论文中英文资料对照外文翻译Word格式文档下载.docx

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sinstructions.Finishedtheadvantagesofinfraredreceivingheadisnotinneedofsophisticateddebuggingandshellscreen,useriseasatransistor,veryconvenient.Butwhenusedintheinfraredreceivingattentionfinishedfirstcarrierfrequency.

Infraredremotecommoncarrierfrequencyfor38kHz,thisistransmittedbyusing455kHzTaoZhentodecide.Atthelaunchofcrystalswereintegerfrequency,frequencycoefficients,socommonly12,so455kHz÷

12hundredthkHz38kHzhundredth379,000.Someremotecontrolsystemadopts36kHz,56kHz,etc,general40kHzlaunchedbythecrystalsofoscillationfrequencytodecide.

Infraredremotecharacteristicisnotinfluencethesurroundingenvironmentanddoesnotinterferewithotherelectricequipment.Duetoitscannotpenetratewalls,sotheroomcanusecommonhouseholdapplianceofremotecontrolwithoutmutualinterference,Circuittestingissimple,aslongasgivencircuitconnection,generallydoesnotneedanycommissioningcanwork,Decodingeasily,canundertakemultipleremotecontrol.Becauseeachmanufacturerproducesagreatdealofinfraredremoteapplication-specificintegratedcircuit,whenneedpressdiagramsuoji.Therefore,theinfraredremotenowinhouseholdappliances,indoorclose（lessthan10meters）intheremotecontroliswidelyused.

Multipleinfraredremotecontrolsystemofinfraredemissioncontrolbuttons,therearemanypartsgeneralrepresentativeofdifferentcontrolfunction.Whenpressedabutton,correspondinglyinthereceiverwithdifferentoutput.

Receivingtheoutputstatecanberoughlydividedintopulse,level,self-lockingandinterlock,datafiveforms."

Thepulseoutputisaccordingtolaunch"

whenthebutton,thereceiveroutputterminalsoutputcorresponding"

effective"

apulsewidth100msingeneral."

Level"

referstotheoutputlaunchpressbutton,thereceiveroutputcorrespondingoutputlevel"

"

effectivetransmittoloosenthereceiver"

level"

disappears.This"

effectivepulse"

and"

maybeofhighlevelislow,andmayalsodependontheoutputcorrespondingstaticstate,suchasfeetforlow,static"

high"

foreffective,Asforthestatic,"

low"

higheffective.Inmostcases,"

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"

temporary"

twoforms.Theso-called"

referstolaunchtheoutputsignalofeachhair,thereceiveroutputcorresponding"

newstoreuntilyoureceivesignals."

Temporary"

outputandtheintroductionof"

level"

outputissimilar.

Remotedistance（RemoteControleffectofRFRemoteControldistance）arethemajorfactorsasfollows:

1,launchedinpowertransmissionpower:

whiledistance,butgreatpowerconsumption,easytogenerateinterference,

2andreceivingthereceiversensitivity,receiving,remotedistanceincreasedsensitivitytoimprove,buteasytocausedisturbancemaloperationorabuse,

3,antenna,usinglinearantenna,andparallel,remotedistance,butoccupiesalargespace,inusetheantennaspin,pullcanincreasetheremotedistance,

4andthehigherheight:

antenna,remotefarther,butbyobjectiveconditions,

5andstop:

currentuseofwirelessremoteuseofUHFbandstipulatedbythestate,thepropagationcharacteristicsofapproximatelineartransmission,light,small,transmittersandreceiversdiffractionbetweensuchaswallsareblockingwillgreatlydiscountedremotedistance,ifisreinforcedconcretewalls,duetotheabsorptioneffectconductor,radiowaves.

Consideringthedesignofhardwarevolumesmalltobeembeddedintheremotecontrol,sowechose20footsingle-chipchipAT89C2051.Belowistheintroductionofthefunction.

1）AT89C2051internalstructureandperformance

AT89C2051isabyteflash2Kwithprogrammableread-onlymemorycanbeerasedEEPROM（lowvoltage,highperformanceofeightCMOSmicrocomputer.ItadoptsATMELofhigh-densitynon-volatilestoragetechnologymanufacturingandindustrialstandardMCS-51instructionsetandlead.ThroughthecombinationofsinglechipingeneralCPL1andflashmemory,isastrongATMELAT89C2051microcomputer,itsapplicationinmanyembeddedcontrolprovidesahighlyflexibleandlowcostsolutions.Thecompatiblewith8051AT89C2051isCHMOSmicrocontroller,theFlashmemorycapacityfor2KB.AndCHMOS80C51process,havetwokindsofleisureandpowersavingoperationmode.Theperformanceisasfollows:

8CUP,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.

AT89C2051pinfunction:

1theVcc:

voltage.

2toGND.

3P1mouth:

P1mouthisan8-bittwo-wayI/Oport.P1.2~P1.7mouthpintheinternalresistanceprovides.P1.0andP1.1requirementsontheexternalpull-upresistors.P1.0andP1.1alsoseparatelyaspieceinsideprecisionsimulation

DiagrambAT89C2051footfigure

comparatorwithinput（AIN0）andreversed-phaseinput（AIN1）.OutputbuffercanabsorbtheP1mouth20mAcurrentandcandirectlyLEDdisplaydriver.WhenP1mouthpinintoa"

1"

canmakeitsinput.WhenthepinP1.2~P1.7asinputandexternaldown,theywillbefortheinternalresistanceandflowcurrent（IIL）.InflashP1mouthduringtheprocedureandprogramcodedatareceivingcalibration.

4P3:

theP3.0~P3.5P3,P3.7istheinternalresistancewithseventwo-wayI/0lead.P3.6forfixedinputspieceinsidethecomparatoroutputsignalanditasageneralI/Ofootandinaccessible.P3mouthbuffercanabsorb20mAcurrent.WhenP3mouthpininto"

theyaretheinternalresistancecanpushandinput.Asinput,andthelowexternalP3mouthpinpull-upresistorsandwillusecurrent（IIL）outflow.P3mouthstillusedtoimplementthevariousfunctions,suchasAT89C2051shownintable1.P3mouthstillreceivesomeforflashmemoryprogrammingandcalibrationofprogramcontrolsignals.

P3mouthfunctionasisshownintable1.

Table1

P3mouthpin

Function

P3.0

RXD