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1、10外文资料SelectingtheRightDataAcquisitionSystemEngineersoftenmustmonitorahandfulofsignalsoverextendedperiodsoftime,andthengraphandanalyzetheresultingdata.Theneedtomonitor,recordandanalyzedataarisesinawiderangeofapplications,includingthedesign-verificationstageofproductdevelopm
2、ent,environmentalchambermonitoring,componentinspection,benchtoptestingandprocesstrouble-shooting.Thisapplicationnotedescribesthevariousmethodsanddevicesyoucanusetoacquireit,recordandanalyzedata,fromthesimplepen-and-papermethodtousingtoday'ssophisticateddataacquisitionsystem
3、s.Itdiscussestheadvantagesanddisadvantagesofeachmethodandprovidesalistofquestionsthatwillguideyouinselectingtheapproachthatbestsuitsyourneeds.1.IntroductionIngeotechnicalengineering,wesometimeencountersomedifficultiessuchasmonitoringinstrumentsdistributedinalargearea,danger
4、ousenvironmentofworkingsitethatcausesomedifficultyforeasyaccess.Inthiscase,operatorsmayadoptremotecontrol,bywhichalargeamountofmeasureddatawillbetransmittedtoaobservationroomwherethedataaretobecollected,storedandprocessed.Theautomaticdataacquisitioncontrolsystemisabletocomp
5、letethetasksasregularautomaticdatamonitoring,acquisitionandstore,featuringhighautomation,largedatastorecapacityandreliableperformance.Thesystemiscomposedofacquisitioncontrolsystemanddisplaysystem,withthefollowingfeatures:1.No.ofChannels:32(itcanbeincreasedordecreasedaccordi
6、ngtouser'srealneeds.)2.Scanningduration:decidedbyuser,fastest32points/second3.Storecapacity:20G(itmaybeincreasedordecreased)4.Display:(a)Tableofparameter(b)Historytendency(c)Columngraphics.5.Function:realtimemonitoringcontrol,warning6.Overalldimension:50cm×50cm×72cmDataacqu
7、isitionsystems,asthenameimplies,areproductsand/orprocessesusedtocollectinformationtodocumentoranalyzesomephenomenon.Inthesimplestform,a1010technicianloggingthetemperatureofanovenonapieceofpaperisperformingdataacquisition.Astechnologyhasprogressed,thistypeofprocesshasbeensim
8、plifiedandmademoreaccurate,versatile,andreliablethroughelectronicequipment.Equipme
