外文翻譯原文-基于單片機的數(shù)控直流穩(wěn)壓電源的設(shè)計與制作

1、749TheDesignfactureofaDigitalControlDCRegulatedPowerSupplyBasedonSingleChipHengyuWuMinliTang?(Crespondingauth)LingHeDepartmentofElectronicEngineeringHainanSoftwareProfessionInstituteQionghaiHainan571400Chinawhytml@gslstm

2、l@heling_2818@???Abstract—ThedigitalcontroltechniqueofsinglechipmicrocomputerisadoptedinthedesignofDCvoltagestabilizedpowersupplyfamultifunctionaldigitalizedDCvoltagestabilizedpowersupplywithhigherperfmancecostratio.This

3、powersourceusesthedigitaladjustmenttheoutputprecisionishigh.Italsohasshtovercurrentprotectionalarmwhichissuitableespeciallyineachkindsituationofthehighaccuracyrequest.Thisdesignintellectualizationdirectcurrentpowersupply

4、usestheselfrestraintkeyboardentry.Thesinglechipmicrocomputerreceivesvoltagevalueinfmationofkeyboardinputcariesonprocessing.KeywdsSinglechipmicrocomputerDigitalcontrolDirectCurrentSourceI.INTRODUCTIONDCstabilizedpowersupp

5、lyisoneofthegeneraldevicesusedfelectronictechnologies.Ithasbeenwidelyappliedtotheareasofteachingscientificresearchetc.ThedisadvantagesofthetraditionalmultifunctionalDCstabilizedpowersupplymayinclude:simplystructuredhardt

6、ocontrollowreliabilityhighinterferencelowaccuracylargesizehighcomplexity.Suchpowersuppliesaredesignedwithdifferentkinds.Buttheyallhavethefollowingproblems:theoutputvoltageisadjustedthroughroughturning(bswitch)fineturning

7、(potentiometer).Thismeansthatitistoohardfoutputvoltagetoaccuratelyoutputchangewithinasmallrange(fexample1.02~1?03V)meoverthepocontactfromthebswitchespotentiometersmaycauseagreatinfluenceonoutputovertimewhenoverloadoccurs

8、thecurrentlimitingprotectionwillbeimplementedthroughhardwarethecircuitsarecomplexlyarrangeditsvoltageregulationprecisionislow.ThisarticlewilloverviewanewkindofeasydesignedintelligentDCpowersupplywiththeceofsinglechip.Its

9、intelligencedesignhighprecisioncaneliminatethedisadvantagesdescribedabove.Soitisvaluabletopracticaluse.II.SYSTEMHARDWAREDESIGNA.SystemArchitectureThissystemconsidersAT89S51singlechipasitscecontroller[1].Itallowsvoltagepr

10、esetsteppingadjustmentnumericalcontrolDCpowersupplywhichcanshowthesignalsofoutputvoltagepresetvoltagesimultaneously.ThehardwaretheyisshowninFigure1.Thissystemconsistsofeightpartstheyare:AT889S51controlcircuitkeyboardcirc

11、uitpowercircuitDAcircuitPAcircuitshtcircuitprotectionwarningcircuitstabilizedvoltagecircuitLEDdisplaycircuit.Suchsystemuses“ONOFF”“”““buttonstocontroltherisereduceofpresetvoltagedigitrontodisplay.ThestableAT89S51singlech

12、ipcanbeachievedbycrespondingdigitalsignalssendingcurrentoutputafterDAconversionintegratedoperationalamplifiedLM358conversiontriodeamplifyRCwkfiltering.AtthesametimetheLEDdigitronwilldisplaytheoutputvoltagedigitalvoltmete

13、rwillshowthemeasuredvalue.Figure1.SystemPrincipleDiagramB.NumericalControlThispartismainlycontrolledbythesmallestAT89S51system[1].Itwillimplementthekeyboardcontrolpresetvoltagedisplaycontrolshtcircuitprotectioncontrolwar

14、ningcontrolsoon[3].ThesmallestAT89S51systemisshowninFigure2.Volume1C978142445586710$26.002010IEEE751Includedbythevoltageregulationoutputmoduletheovercurrentdetectingcircuitcanoutputlowlevelwhenovercurrentoccurs.theINTOre

15、questtobesenttoCPUwillbebrokenoff.AfterCPU’Sreceivingtherewillbe5msdelay.III.SYSTEMSOFTWAREDESIGNThesoftwarecontrollingprogramconsistsoftwoparts—masterprogramovercurrentprotectionprogram.Themainpurposeistoimplementfuncti

16、onssuchassteppingplusminusDAconversionkeyboardscanLEDdisplaycurrentwarningsoon.A.MasterProgramThesysteminitialization(alsoknownasAT89S51singlechipinitialization)willfirstbeimplementedthensettingofsystemtime.Callkeystroke

17、processingsubprogramtodecidewhetheranybuttonshavebeenpressed.Ifyesthesystemwillcalldisplayprocessingprogramtodisplaypresetvoltageondigitron.AftertheDAconversionsignalscontrolledbysinglechipwillbedetectedtoseewhetheritiss

18、htcircuit.Ifyestheinterruptprotectionwillbeactivated.Otherwiseitwillimplementvoltageregulationoutput.Themasterprogramisshowninfigure6.B.OverCurrentProtectionProgramSignalscomingfromdigitaltoanalogconversioncircuitwillsen

19、dthedetectedsignalsintothesmallestsystemwithinasinglechipthroughtheovercurrentdetectingcircuitfprocessing.Ifovercurrentoccursthebuzzerwillbeactivated.Overcurrentprotectionprogramisshowninfigure7.Figure6.MasterProgramFigu

20、re7.OverCurrentProtectionProgramIV.CONCLUSIONThisarticlefocusesonanintelligentvoltageregulationpowersupplydesignedwiththeceofsinglechip.Ithasfeaturesofsimplecircuitscontactconstructioncosteffectivegoodperfmance.Throughth

21、esinglechipthisnewkindofpowersupplycansetupasophisticateddetectingsystemtoensurethestableoperationofpowersupply.Theoutputvoltageisdigitaldisplayedwithkeyboardentry.Withagoodappearanceeasyoperationthispowersupplyhashigher

22、applicationvalue.REFERENCES[1]LIQuanli.MonolithicPrinciple&Applications[M]BeiJing:HigherEducationPress?2004.[2]LIZhongfa.DigitalElectronicsTechnology[M]ChineseWaterConservancyWaterelectricPress:2001.[3]GONGMaofa.Monolith