LabVIEW在时间频率计量测试中的应用

19220086JournalofChinaJiliangUniversityVol.19No.2Jun.2008100421540(2008)02201332042008202224(1983),,,..LabVIEW1,2,1,2(1.,310018;2.,201203)LabVIEW,LabSQL.LabVIEW;LabSQL;;TB939ATheapplicationofLabVIEWintimeandfrequencymeasurementHULi2zhi1,2,ZHANGShu2sheng1,DONGLian2(1.CollegeofElectricalandMechanicalEngineering,ChinaJiliangUniversity,Hangzhou310018,China;2.ShanghaiInstituteofMeasurementandTestTechnology,Shanghai201203,China)Abstract:WedescribedtheuseofmeasurementinstrumentsappliedinLabVIEWandtheremote2controlledfunctionoftimeandfrequencymeasurementtoachievetheautomaticmeasurementparametersand,inconjunctionwithLabSQL,achievethereal2timedatastorage,analysisandprocessing.Keywords:LabVIEW;LabSQL;timeandfrequencymetrology;database.,[1].,.,,,10s;,7d,15,.,,,,.,,.,,,,.LabVIEW,[2].1LabVIEW,,,,,LabVIEW,[3]:1)NILabVIEWSQLToolkit;2)LabVIEWActiveX,MicrosoftADO,SQL;3)VisualC++DULL,LabVIEWDULL,;4)LabVIEWLabSQL.;MicrosoftADOSQL,;.,LabSQL,.LabVIEWLabSQL.2LabSQLLabSQLLabVIEWADOVIs,,SQL,.LabSQL,,SQL;,LabVIEW.,LabSQLLabSQL1.1.2.1LabSQLVIsLabSQLVIsCommandVIs;ConnectionVIs;RecordsetVIsTopLevelVIs[4].CommandVIsADO.ConnectionVIsLab2VIEW.RecordsetVIs,,.TopLevelVIsLabSQL,LabSQLVIs.2.2LabSQLLabVIEWuser.libLabSQL,LabSQL.zip.,LabVIEWLabSQL.2.3LabSQLLabSQLODBC,ODBC.LabSQL,Win2dowsODBCDSN(DataSourceName,)[5].3pendulum//(CNT290)(1),,CNT290.CNT90GPIB.,,.,..1Figure1Automaticmeasurementflowchart431193.12CNT290VI,VI.VICNT290,.CNT290NI.2Figure2Frequencymeasurement3.23,ADO,;SQL[6],;,.,,.3Figure3Addingmeasurementvalue3.34.createconnectopenconnectVI,SQL,:SELECT3FROMwhere.,,SQL[7].4Figure4Querymeasurementvalue3.45,6.,VISAre2sourcename,GPIB,:GPIB0::10::INSTR.10,.,,.,SQL.5Figure5Automaticmeasurementprograms4LabVIEW,,.LabVIEWLabSQLAccess,.Access5312,:LabVIEW6Figure6Controlpanel,.[1].[M].:,2002:46256.[2],,.LabVIEW[J].,2004,15(2):1172119.[3],.LabVIEWLabSQL[J].,2007,26(7):15217.[4],,,.LabVIEWLabSQL[J].,2004,20(10):53254.[5],,,.LabVIEW[M].:,2003:4702484.[6],,,.LabSQLLabview[J].,2007,27:16.[7],.LabVIEW[J].,2007,26(8):56258.(102)3,.,:,.[1]VONK`RM`NTH,RUBACHH.Onthemechanismofresistanceinfluid[J].PhysikalischeZeitschrift,1912,13(5):3512358.[2]WILLIAMSONCHK.Vortexdynamicsinthecylinderwake[J].AnnualReviewofFluidMechanics,1996,28:4772539.[3]WILLIAMSONCHK,GOVARDHANR.Vortex2in2ducedvibrations[J].AnnualReviewofFluidMechanics,2004,36:4132455.[4]JULIOS.Aninvestigationofthewakeofacircularcylin2derusingavideo2baseddigitalcross2correlationparticleim2agevelocimetrytechnique[J].ExperimentalThermalandFluidScience,1996,12:2212233.[5]LEESJ,DAICHIN.Flowpastacircularcylinderoverafreesurface:Interactionbetweenthenearwakeandthefreesurfacedeformation[J].JournalofFluidsandStructure,2004,19:104921059.[6],.DPIV[J].,2002,15(4):3812387.[7],.[J].,2006,17(1):40243.[8]PRECESJ,SUMNERD.Flowvisualizationaroundacir2cularcylinderneartoaplanewall[J].JournalofFluidsandStructures,2002,16(2):1752190.[9]SLAOUTIA,GERRARDJ.AnexperimentalinvestigationoftheendeffectsonthewakeofacircularcylindertowedthroughwateratlowReynoldsnumbers[J].JournalofFluid,1981,112:2972314.[10]ZDRAVKOVICHMM.Flowaroundcircularcylinders[M].Oxford:OxfordUniversityPress,1997:425[11],.[J].,2007,18(2):89295.[12],.[M].:,2006:2682270.63119