英语文献翻译.docx

英语文献翻译.docx

《英语文献翻译.docx》由会员分享，可在线阅读，更多相关《英语文献翻译.docx（13页珍藏版）》请在冰豆网上搜索。

英语文献翻译

本科毕业设计（论文）

中英文对照翻译

院（系部）机械与动力工程学院

专业名称测控技术与仪器专业

年级班级测控10-02班

学生姓名温京光

指导老师王红星

2014年3月15日

Infraredremotecontrol

and51singlechipmicrocomputer

People'seyescanseethevisiblewavelengthfromlongtoshortaccordingtothearrangement,inordertored,orange,yellow,green,green,blue,violet.Oneoftheredwavelengthsfor0.62~0.76muonm,Purpleis0.38wavelengthrange~muonm.Purpleisshorterthanthewavelengthoflightcalledultravioletray,redwavelengthsoflightislongerthanthatofinfraredlight.Infraredremotecontrolistousewavelengthfor0.76~1.5muonmbetweenthenearinfraredtotransfercontrolsignal.

Commonlyusedinfraredremotecontrolsystemofgeneralpointstransmitandreceivetwoparts.Themaincomponentpartforthelaunchofinfraredlightemittingdiode.Itisactuallyaspeciallightemittingdiode,duetoitsinternalmaterialdiffersfromordinarylightemittingdiode,resultinginitsendsoncertainvoltage,itisaratherinfraredlight.Useofinfraredlightemittingdiodetheinfraredwavelengths,for940nmappearanceandordinary,justthesamelightemittingdiodefivedifferentcolors.Infraredlightemittingdiodegenerallyhaveblackandblue,transparentthreecolors.Judgementofinfraredlightemittingdiodeandjudgmentmethod,usingamultimetertoordinarydiodeelectricblockmeasureofinfraredlightemittingdiode,reverseresistance.Theinfraredlightemittingdiodeluminescenceefficiencytousespecialinstrumenttomeasureprecise,anduseonlyspareconditionstopullawayfromroughlyjudgement.Receivingpartofinfraredreceivingtubeisaphotosensitivediode.

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

IncommonCX20106A,etcPC1373Hmuoninfraredreceivingspecialamplifiercircuit.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÷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"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:

1,launchedinpowertransmissionpower:

whiledistance,butgreatpowerconsumption,easytogenerateinterference,

2,andreceivingthereceiversensitivity,receiving,remotedistanceincreasedsensitivitytoimprove,buteasytocausedisturbancemaloperationorabuse,

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

4,andthehigherheight:

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.

Figure1

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

Figure

2

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