数据采集外文文献翻译中英文.docx
- 文档编号:3175361
- 上传时间:2022-11-19
- 格式:DOCX
- 页数:7
- 大小:23.72KB
数据采集外文文献翻译中英文.docx
《数据采集外文文献翻译中英文.docx》由会员分享,可在线阅读,更多相关《数据采集外文文献翻译中英文.docx(7页珍藏版)》请在冰豆网上搜索。
数据采集外文文献翻译中英文
数据采集外文文献翻译
(含:
英文原文及中文译文)
文献出处:
TxominNieva.DATAACQUISITIONSYSTEMS[J].ComputersinIndustry,2013,4
(2):
215-237.
英文原文
DATAACQUISITIONSYSTEMS
TxominNieva
Dataacquisitionsystems,asthenameimplies,areproductsand/orprocessesusedtocollectinformationtodocumentoranalyzesomephenomenon.Inthesimplestform,atechnicianloggingthetemperatureofanovenonapieceofpaperisperformingdataacquisition.Astechnologyhasprogressed,thistypeofprocesshasbeensimplifiedandmademoreaccurate,versatile,andreliablethroughelectronicequipment.Equipmentrangesfromsimplerecorderstosophisticatedcomputersystems.Dataacquisitionproductsserveasafocalpointinasystem,tyingtogetherawidevarietyofproducts,suchassensorsthatindicatetemperature,flow,level,orpressure.Somecommondataacquisitiontermsareshownbelow.
Datacollectiontechnologyhasmadegreatprogressinthepast30to40years.Forexample,40yearsago,inawell-knowncollegelaboratory,thedeviceusedtotracktemperaturerisesinbronzemadeofheliumwascomposedofthermocouples,relays,interrogators,abundleofpapers,andapencil.
Today'suniversitystudentsarelikelytoautomaticallyprocessandanalyzedataonPCs.Therearemanywaysyoucanchoosetocollectdata.Thechoiceofwhichmethodtousedependsonmanyfactors,includingthecomplexityofthetask,thespeedandaccuracyyouneed,theevidenceyouwant,andmore.Whethersimpleorcomplex,thedataacquisitionsystemcanoperateandplayitsrole.
Theoldwayofusingpencilsandpapersisstillfeasibleforsomesituations,anditischeap,easytoobtain,quickandeasytostart.Allyouneedistocapturemultiplechannelsofdigitalinformation(DMM)andstartrecordingdatabyhand.
Unfortunately,thismethodispronetoerrors,sloweracquisitionofdata,andrequirestoomuchhumananalysis.Inaddition,itcanonlycollectdatainasinglechannel;butwhenyouuseamulti-channelDMM,thesystemwillsoonbecomeverybulkyandclumsy.Accuracydependsonthelevelofthewriter,andyoumayneedtoscaleityourself.Forexample,iftheDMMisnotequippedwithasensorthathandlestemperature,theoldoneneedstostartlookingforaproportion.Giventheselimitations,itisanacceptablemethodonlyifyouneedtoimplementarapidexperiment.
Modernversionsofthestripchartrecorderallowyoutoretrievedatafrommultipleinputs.Theyprovidelong-termpaperrecordsofdatabecausethedataisingraphicformatandtheyareeasytocollectdataonsite.Onceabarchartrecorderhasbeensetup,mostrecordershaveenoughinternalintelligencetooperatewithoutanoperatororcomputer.Thedisadvantagesarethelackofflexibilityandtherelativelowprecision,oftenlimitedtoapercentagepoint.Youcanclearlyfeelthatthereisonlyasmallchangewiththepen.Inthelong-termmonitoringofthemulti-channel,therecorderscanplayaverygoodrole,inaddition,theirvalueislimited.Forexample,theycannotinteractwithotherdevices.Otherconcernsarethemaintenanceofpensandpaper,thesupplyofpaperandthestorageofdata.Themostimportantistheabuseandwasteofpaper.However,recordersarefairlyeasytosetupandoperate,providingapermanentrecordofdataforquickandeasyanalysis.
SomebenchtopDMMsofferselectablescanningcapabilities.Thebackoftheinstrumenthasaslottoreceiveascannercardthatcanbemultiplexedformoreinputs,typically8to10channelsofmux.Thisisinherentlylimitedinthefrontpaneloftheinstrument.Itsflexibilityisalsolimitedbecauseitcannotexceedthenumberofavailablechannels.ExternalPCsusuallyhandledataacquisitionandanalysis.
ThePCplug-incardisasingle-boardmeasurementsystemthatusestheISAorPCIbustoexpandtheslotinthePC.Theyoftenhaveareadingrateofupto1000persecond.8to16channelsarecommon,andthecollecteddataisstoreddirectlyinthecomputerandthenanalyzed.Becausethecardisessentiallyapartofthecomputer,itiseasytoestablishthetest.PC-cardsarealsorelativelyinexpensive,partlybecausetheyhavesincebeenhostedbyPCstoprovideenergy,mechanicalaccessories,anduserinterfaces.Datacollectionoptions
Onthedownside,thePCplug-incardsoftenhavea12-wordcapacity,soyoucan'tdetectsmallchangesintheinputsignal.Inaddition,theelectronicenvironmentwithinthePCisoftensusceptibletonoise,highclockrates,andbusnoise.TheelectroniccontactslimittheaccuracyofthePCcard.Theseplug-incardsalsomeasurearangeofvoltages.Tomeasureotherinputsignals,suchasvoltage,temperature,andresistance,youmayneedsomeexternalsignalmonitoringdevices.Otherconsiderationsincludecomplexcalibrationsandoverallsystemcosts,especiallyifyouneedtopurchaseadditionalsignalmon
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 数据 采集 外文 文献 翻译 中英文