传感器 外文翻译 外文文献 英文文献 分布是温度传感器Word文档格式.docx
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TypicalproductshaveAD590AD592,TMP17,LM135,etc.jAnalogintegratedtemperaturecontroller.Analogintegratedtemperaturecontrollermainlyincludetemperaturecontrolswitch,programmabletemperaturecontroller,atypicalproducthaveLM56,AD22105andMAX6509.Someincreasestrengthtypeintegratedtemperaturecontroller(forexampleTC652/653)alsocontainstheA/Dconverterandcuregoodsequence,thisprocesswiththeintelligenttemperaturesensorsomesimilarities.Butitisnotitssystem,workbymicroprocessingdevicecontrol,thisisthemaindifferencebetween.Intelligenttemperaturesensor.intelligenttemperaturesensor(alsocalleddigitaltemperaturedegreessensor)isinthemid1990slaunch.Itismicroelectronicstechnology,computertechnologyandthedynamictestingtechnology(ATE)crystallization.Intelligenttemperaturesensorinternalcontaintemperaturesensor,A/Dconverter,signalprocessor,memory(orregisters)andinterfacecircuit.Someproductsstilltakemultiplexer,centralcontrolsystemdevice(CPU),randomaccessmemory(RAM)andreadonlymemory(ROM).Intelligenttemperaturesensorischaracteristicoftemperaturedataandrelevantcanoutputthetemperaturecontrolofthequantity,adaptationvariousmicrocontroller(MCU);
Thedevelopmenttrendofthetemperaturesensor.Inthe21stcentury,thetemperaturesensorisheadedinhighprecision,multi-function,bus,standardization,highreliabilityandsafety,developmentofvirtualsensorandnetworksensor,researchmonolithictemperaturemeasuringsystemandotherhigh-techdirectiondeveloprapidly.Sensorsintheapplicationtemperaturecontrollingsystem.Currentmarketexistsmainlysinglepointandmoretwotemperaturemeasurement.Forsinglepointtemperaturefoundmentinstrument,mainlyadoptsthetraditionalanalogintegratedtemperaturesensor,whichheatresistance,thermocouplesensorsmeasuringaccuracy,highmeasurementrange,andgotthegeneralapplication.Thisproductistemperaturemeasuringrange℃~200mostlybetween800℃,resolution12th,andleastdistinguishabletemperaturein0.001~0.01between.CabinLEDdisplaymodule,showsrangingfrom4to16.Someinstrumentsalsohasmemoryfunction,canstoreseveralhundredtoafewthousandsetsofdata.Thisinstrumentcanbeverygoodmeetasingleusersingle-pointmeasurementneeds.Moretemperaturemeasurement,relativeandsinglepointmeasurementprecisionhascertaingap,althoughrealizedthemulti-channeltemperaturemeasurementandcontrol,butthepriceisexpensive.Inviewofthepresentmarketsituation,proposedthistopiccansatisfyrequirements,scalableandcost-effectivesingle-chipmulti-channeltemperaturemeasuringsystem.ThroughthefirsttemperaturesensorDS18B20acquisition,andthenthroughtheC51SCMprocessinganddisplayedonthedigitaltube,canbecollectedindoororagreenhousearoundindifferentlocationsofthetemperature,withfourdigitaltubetodisplay.Thefirstdigitalpipedisplayacquisitioniswhichway,whichchannel.Threedigitalpipedisplayaftertheacquisitionchannelbytemperature,accurateto0.1degrees.
AT89C51isa4KbytesFLASHMemory(ErasableProgrammableandFPEROM-FLASHforthecampaignswith)lowvoltage,high-performanceCMOSeightmicroprocessors,commonlyknownasthemicrocontroller.AT89C2051isa2Kbyteswithflashmemorycanbeerasedprogrammableread-onlymemory,SCMcaneraseread-onlymemorycanberepeatederased1000times.ThisdeviceadoptsATMELhigh-densitynon-volatilememorymanufacturingtechnologymanufacturing,andindustrialstandardMCS-51instructionsetandoutputtubecompatible.Duetothemultifunctional8bitsCPUandwillbeflashingonsinglechipcombinationofmemory,ATMELAT89C51isakindofhighefficientmicrocontroller,AT89C2051isastreamlinedversion.AT89C51microcontrollerasmanyembeddedcontrolsystem.Arrangeappearanceandpinasshowninfigure"
1-2"
shown
1-2AT89C51pinsfigure
Majorfeatures:
·
andMCS-51compatible
4KbytesprogrammableFLASHmemory
life:
1000write/wipecycle
dataretentiontime:
10years
thestaticjob:
0Hz-24MHz
level3programmemorylock
128x8bitsinternalRAM
32programmableI/Olines
two16timer
5interruptsource
programmableserialchannels
lowpowerconsumptionofidleandpowerlostmode
pieceinsideoscillatorandclockcircuit
Tubefeetexplains:
VCC:
powersupplyvoltage.
GND:
grounded.
P0Mouth:
P0mouthaeightleakleveltwo-wayI/Omouthopen,everyfootcanabsorb8TTLgatecurrent.WhenthepipemouthP0feetfirstwrite1,definedashighresistanceinput.P0canbeusedforexternalprogramdatastorage,itcanbedefinedastheeighthdata/address.InFIASHprogramming,P0mouthasthesource-codeinputport,whenFIASHcheck,thesource-codeP0output,whenP0externalmustbepulled.
P1mouth:
mouthisaninternalP1providepull-upresistors8-bittwo-wayI/Omouth,P1mouthbuffercanreceive4TTLgatecurrentoutput.P1mouthtubefeet,wasthenwrite1forhigh,pullupinsidecanbeusedasinput,P1mouthbeexternalpulldownforlowelectricityatordinarytimes,willoutputcurrent,thisisduetointernalpullupsake.InFLASHprogrammingandcalibration,P1mouthaseighthaddresstoreceive.
P2mouth:
foraninternalP2mouthonthe8-bitpull-upresistorstwo-wayI/Oport,P2mouthtoreceive,theoutputbuffer4TTLgatecurrent,whenP2mouthiswritten"
1"
itstubefeetareinternalpull-upresistors,andpushasinput.Andsoastheinput,P2mouthfeetareexternaldowntube,willoutputcurrent.Thisisduetointernalpullupsake.P2mouthwhenusedexternalprogrammemoryor16addressexternaldatamemoryaccess,P2mouthhighoutputaddresseight.Inagivenaddress"
itusinginternalandexternal8addressadvantage,whenforreadingandwritingdatamemory,P2whenthespecialfunctionregistersmouthoutputofcontent.P2mouthinFLASHprogrammingandthecalibrationeightaddresswhenreceivinghighsignalandcontrolsignals.
P3mouth:
P3mouthpipeis8feetwithinternalpull-upresistorstwo-wayI/Oport,mayreceivefourTTLgatecurrentoutput.WhenP3mouthwriting"
theyareinternalandhighlevel,andusedasinput.Asinput,duetoexternaldrop-downforlowlevel,P3mouthwilloutputcurrent(ILL)thisisduetopullup'
ssake.
RST:
resetinput.WhenoscillatorresetdevicetokeepRSTfeethighleveltwomachinecycletime.
ALE/PROG:
whenaccessexternalstorage,addresslatchallowstheoutputlevelofthepositionforlatchaddressbyte.DuringtheFLASHprogramming,thispinforinputprogrammingpulse.Inpeacetime,theALEwithaconstantfrequencycycleoutputisthepulsesignal,thefrequenciesofthe1/6oscillatorfrequency.Soitcanbeusedagainstexternaloutputpulseorusedfortimingpurpose.Howeveritis:
wheneverusedforexternaldatastorage,willskipaALEpulse.IfyouwanttobantheALEoutputcanbeinSFR8EHaddressfor0.Atthistime,onlybyperformingtheALEMOVX,MOVCinstructionisALEtotakeeffect.Inaddition,thepinswereslightlyup.IfmicroprocessorinexternalexecutionALE,buyabanisinvalid.
/PSEN:
externalprogrammemorychoiceofcommunicationnumber.Byexternalprogrammemoryinduringtheinstructionfetch,eachmachinecycletwice/PSENeffective.Butonavisittoexternaldatastorage,thetwoeffective/PSENsignalswillnotappear.
/EA/VPP:
when/EAkeeplowlevelsinthisperiod,theexternalprogrammemory(0000H-FFFFH),whetherhaveinternalprogrammemory.Noteencryptionmethod1,/EAwillRESETforinternalfocus;
When/EAendkeephighelectricityatordinarytimes,internalprogrammemoryhere.DuringtheFLASHprogramming,thispinisalsousedVPP12Vprogrammingpower(on).
XTAL1:
theinvertingoscillatoramplifierinputandinputtotheinternalclockoperatingcircuit.
XTAL2:
fromreverseoscillatoroutput.
KeilVision2isaboutthe8051seriesMCUKeilcompanyofdevelopmenttoolscanbeusedtocompileCsourcecode,assemblerssourceprogram,connectionandrelocationtargetfilesandlibraries,genbuilt:
documents,debuggingpurposesprocedure,etc,itisakindofintegrationofdocumentmanagementcompileenvironment.Itintegratesdocumenteditingprocessing,compileconnection,projectmanagement,window,toolscitedandsoftwarecopytruedebuggingandotherfunctions,isprettypowerfuldevelopmenttool.Inkeilinsidecompile,thep