validationqq网页版登陆页面

StudyonteachingreformofthevirtualinstrumenttechnologycoursebasedontrainingprofessionalcomprehensiveabilityChangFenga,HeGuangpub,TongQiang,ZhuJiaxiong,ZhouDapeng,FanLingSchoolofPhysicsandElectronicEngineeringofLeshanNormalUniversity,Chinaa14987625@qq.
com,b465071705@qq.
comKeywords:Thevirtualinstrumenttechnology;teachingreform;theelectronicandinformationengineering;professionalcomprehensiveabilityAbstract.
Thevirtualinstrumenttechnologyisthecurrentdevelopmenttrendofmeasurementtechnologyandoneoftherequiredcoursesinelectronicandinformationengineering.
Thisarticlestudiesteachingreformthatcombinesthetheoryteaching,professionalcourses-penetratedinexperimentprojectandproject-orientedteachingmethods.
Newideasareprovidednotonlytoimprovingteachingqualityofthevirtualinstrumenttechnologycourse,butalsotoimprovingprofessionalcomprehensiveabilityoftheelectronicandinformationengineeringmajors.
IntroductionThevirtualinstrumenttechnology(VI)isthecurrentdevelopmenttrendofmeasurementtechnologyandoneoftherequiredcoursesinelectronicandinformationengineering.
Thiscoursethathasthefeaturefortrainingstudents'integrateddesignabilitywithsoftwareandhardwareinvolvesbroadprofessionalknowledgewithstrongapplicability.
Thestudentswhocombinethetheoriesofothercourseswithpracticeinthiscourse,willbewellpreparedfortheirgraduationprojects,andhavegreatjobsecurityinthefuture.
Adaptingtosocialdemandhasbeenthetrainobjectivesincetheelectronicandinformationengineeringhasbeensetupinourcollege.
Atthesametime,manyelectronicinformationcourseshavebeensetup.
Theprofessionalcoursesareinveryclosecontact.
Alongwiththeincreaseofthesecourses,howtoachievethetrainobjectiveofprofessionalcomprehensiveabilitythroughthewholeelectronicandinformationengineeringknowledge,hasbecomeanimportantsubjectinprofessionalteaching.
Inordertoimprovethestudents'professionalcomprehensiveabilityandgetthefullscaledevelopment,wecanstartfromsuchthreetraininglinksasthetheoreticalresearchability,practicalabilityandinnovationability.
Inforeigncountries,theVIcourserunsthroughothercoursesbeingcombinedwiththeoreticalteachingandexperimentalteaching.
Thiscreateaconnectionbetweencourses:Ontheonehand,theVIpenetratestheothercourses(e.
g.
measurementtechnology,sensortechnology,electricalandelectronictechnologyandsoon).
Ontheotherhand,thetheoriesofothercourses(e.
g.
automaticcontrol,digitalcommunication,signalprocessing,imageprocessingandsoon)areintroducedtotheVIcourse.
Teachingsituationofvirtualinstrumenttechnologycourseinourcollege.
Allthewhile,theVIcourseinourcollegehasadoptedateachingmodethatisaseparationoftheoryandexperimentinanindependentlab,buttherearemanyareasneedsimprovement.
Separationoftheoryandexperiment,ignoringexperimentagainsttheory.
MoreandmorecollegesbegantosetupVIcourseandVIexperimentalcourse,thepurposeistoprovideopportunitiesoftheoreticalstudyandinnovationpracticeforstudent.
Itisconsistentwithourtrainobjectiveofinnovativetalents.
Notonlydoesitletstudentsdevelopcreativity,butalsoisanimportantwaytoimprovethestudents'abilityandquality.
OurVIcourseputemphasisonthetheoryteachingandignoresexperiment,likeothercourses,theexperimentarrangementdependsontheplansoftheorycourses.
Foronething,theoryisseparatedfromexperiment,andtheexperimentcourselagsthescheduleoftheorycourse.
Second,teachersdidnotdesigntheelaborateexperimentproject,sothatstudentsthinktheexperimentcourseisnotimportantthantheorycourse.
Courselearningleanstowardsoftware.
TheconceptofVIisputforwardbyAmericannationalinstrumentcompany,andLabVIEW,adesignsoftwareofVI,thatisalsoproducedbyNIcompanyiswidelyused,sotheVIcoursesinmanycollegeshaveafewhardwareexperimentjustsimplyexplaininghowtousetheLabVIEWsoftware,Notexceptingourcollege,theexperimentalprojectscontainalotofvalidationexperiments,andmostoftheseexperimentsaretoosimple.
So,Thecomprehensiveexperimentsbasedonproject,willhavesignificanteffectsonthetrainingsofstudents'creativeability,practicalability,problem-solvingabilityandteamworkability.
Theunreasonabledesignandpoorcontent.
Ourcurrentexperimentprojectsaredividedintotwoparts.
Thefrontpartissoftwareexperiment.
Thesecondparthasafewhardwareoperations.
Thesoftwareexperimentthatistoosimpleandreflectedintheuseofsingleknowledge,haslesscomprehensiveandcausesamisallocationofknowledgepoint.
Therearealsomanyproblemsinhardwareoperation.
Studentscanonlydotheexperimentaccordingtocontentandstepsbyexperimentinstructor.
Togetherwithrestrictfunctionoftheexperimentaldevice,thestudents'initiativeandcreativenessarelimited.
ThereformofteachingsysteminVIcourseOnthebasisoftheabovedescriptionofVIcourseinourcollege,wehaveanewdesignforthecourse,whichisanewteachingmodethatcombinesthetheoryteaching,professionalcourses-penetratedinexperimentprojectandproject-orientedteachingmethods.
AsFig.
1shows,itisthecombinationofthethreeteachingmethods(Aforthetheoryteaching,Bforprofessionalcourses-penetratedinexperimentproject,Cforproject-orientedteachingmethods).
Wecanseethesethreeteachingmethodsexistsimultaneouslyinthewholeteachingperiod.
Fig.
1ThecombinationtimedistributionofthreeteachingmethodsTeachers'theoryteaching.
AlthoughtheteachingofVIemphasizeshands-onpractice,butthetheoryofknowledgeisjustasimportant.
Teachers'theoryteachingwillbethroughoutthesemesterasaruletoguidestudents.
1-2weeks:TheVItheory3-16weeks:TheadvancedtechnologyandapplicationofVIA3-10weeks:Learningsoftwareanddoingexercisesthroughprofessionalcourses-penetratedinexperimentprojectBC3-10weeks:Thepreparationforproject-oriented11-16weeks:Designingproject-orientedsystemThebasicknowledgeofVI(thebasicconceptandtheoryofVI,thedevelopmentandpresentsituationofVI,theapplicationandtrendofVI,thesoftwareintroductionofVI,theprogrammingofLabVIEWetc)willbemainlytaughtinclassatanearlierstageofthesemester.
Accordingtothescheduleandcontentinthelateteaching,teacherscancollectthenewinformationfromapplicationanddevelopmentofVI,andshowthesebymultimediatothestudentswhocanbefamiliarwiththebasicconcept,principle,keytechnology,applicationofVIandnotfeelboring.
Professionalcourses-penetratedinexperimentproject.
DevelopingprojectbyexercisesofLabVIEWandpracticesofprofessionalcourses-penetratedinexperimentprojectthroughotherexistingelectronicandinformationengineeringknowledge,studentscanbetterconsolidatetheexistingknowledgeandputitintopractice.
Theotherprofessionalknowledge(suchasautomaticcontrol,digitalcommunication,signalprocessing,imageprocessingandsoon)isintroducedintotheVIcourse,beingcombinedwiththeVIandtheLabVIEWsoftwareprogrammingtechnology.
Wecallitprofessionalcourses-penetratedinexperimentprojectthatconformstotheteachingobjectsandcontentsofVI.
Accordingtotheexistingelectronicandinformationengineeringcourses,experimentalprojectsaredesignedasshowninTable1.
SowecanseethecomprehensiveexperimentalprojectskeepupwithteachingknowledgepointsofVI,andareinterlockedstepbystep.
Theseprojectswhicharepenetrateddifferentcoursesembodytherelationshipbetweenthecurrentknowledgeandteachingknowledgepoints.
Itaffectsstudents'abilitytousetheknowledge.
Table1Listofprofessionalcourses-penetratedinexperimentprojectExperimentalProjectsCourses-penetratedTeachingKnowledgePointsThedesignofdigitalphase-lockedloopHighFrequencyCircuitControlstructureTheforloopstructureCymometerexperimentMicrocomputerInterfaceTechniqueSequencestructureTimenodeThedesignofarbitrarywaveformgeneratorSignalsandSystemsArrayChartandgraphicThedesignofdigitallow-passfilterDigitalSignalProcessingChartandgraphicSignalprocessingandanalysisModulationanddemodulationexperimentDigitalCommunicationPrincipleMathSignalprocessingandanalysisTemperaturecontrolsystemSCMAutomaticControlPrincipleSerialcommunicationStringRemotecontrolsystemComputerNetworkRemotecontrolNetworkprotocolInterpolationandfittinginmathematicalanalysisDigitalImageProcessingMathematicalAnalysisThedesignofoscilloscopebasedonsoundcardMeasurementTechnologyDataAcquisitionSoundI/OInteachingprocess,teachersteachtheteachingknowledgepoints,andthenguidestudentstosolvetherelatedprofessionalproblemsofothercoursesbepenetratedusingtheVItechnology.
Thisisaprocessfromintroducingproblemstoanalysingproblems,andfinallysolvingproblems.
Intheconcreteteaching,wetakecymometerexperimentasanexample.
Firstly,teacherintroducesapracticalproblem:tomeasureasignalfrequency.
Secondly,teacheranalysesavarietyofissueswithstudents,suchashowtomeasurefreguency,howtogettherelationshipthatthefreguencyisequaltothecyclenumberofthemeasuredsignalinunittime,whatmathematicalbasisorknowledgeofMicrocomputerInterfaceTechniquetoneed.
Finally,teacherguidesstudentstosolveproblemsbydesigningtheVIsystemaccordingtotheknowledge(thesequencestructureandthetimenode)learnedinthislesson.
InteractiveteachingsuchasMicrocomputerInterfaceTechniquecoursebeingpenetratedcangetsstudentsfeelpracticabilityoftheVItechnology.
Soasastudentthereisalwaystheopportunitytobecreativeandgiveinputintothegraduationproject,academiccompetitionandinnovationpracticethroughaseriesofprofessionalcourses-penetratedinexperimentproject.
Theapplicationofproject-orientedteachingmethod.
Theteachingmethodswiththecombinationoftheoryandpracticecanraisethestudents'abilitiesincludingpracticeability,problem-solvingabilityandengineeringability,canalsomakeaseamlesstransitionfromtheschoolknowledgetothepracticaloperationsinwork.
Theproject-orientedteachingmethodtakesthespecificprojectspracticingasthemainline,takesstudentsasthemainbodyandtakesteachers'scientificguidanceastheassistantteachingmean.
Thisalsocalled"theteachingmethodbasedonproject".
Withinthewholeteachingperiod,theteacher'stheoryteachingandproject-orientedteachingcomplementeachother.
TheVIitselfisatechnologyforapplication,andprovidesnewideasfortheconstructionoftheelectronicsystem.
Iftherearesomeprojectsfollowingthestepssuchasdataacquisition,dataanalysis,datadisplay,datafeedback,control,itwillmakestudentsrealizethathowtoconstructaunitedelectronicsystemmoredeeply.
Fig.
2Theflowchartofthesystemdesigningwithproject-orientedteachingmethodInteachingprocess,studentsaredividedintoseveralgroupswiththreeineach,andthereisaleaderineachgroup.
Teacheroverseestheprogressofthewholeprojectmainlybyaskingthegroupleader.
Inthecaseofthedesignoftemperaturecontrolsystem,witchcontainsallstepsindesigningofaelectronicsystem,firstofall,teacherputsforwardthecontentofproject:Thedesignofatemperaturecontrolsystem,witchcontainslower-machineandupper-computer.
Thelower-machineisasystemofthetemperatureacquisitionandcontrol,adopting51seriesSCMasacore.
Theupper-computer,designedbyLabVIEWandcommunicatedwithlower-machinebyserialport,completesthereal-timedisplayandcontrolofthetemperature.
ThenasshowninFig.
2,thereareseveralsetpstorealizethesystem.
Studentswillfinishthedesignorientedbyproject,basedonteam.
Atthesametime,teacherprovidesrelevantinformationandguidance,togetherwiththeassessmentDataaccessSoftwaredevelopmenthardwaredesignSolutionSelectionhardwaredebugSoftwaredebugJointdebuggingRealizationandincentive,promotesstudents'independentthinking,strengthenstheteamworkandimprovestheabilitytosolvepracticalproblemsusingtheknowledgelearned.
Suchdesignnotonlyrelatestosoftwaredevelopment,butalsoneedstocompletethedesignanddebuggingofthehardware,sotheworkloadandthedifficultygreatlyincreased.
Itcouldnotbedoneonlybyexistingclasshours.
Thereareseveralmajorsolutions:1)Toincreaseclasshours.
Withtheincreaseofclasshoursforthiscourse,theclasshoursofothercoursesmustbereduced.
Thisapproachislessachievable.
2)Toaddcomprehensiveexperimentproject,especiallyhardwaredesign.
1-2itemsasemester,nottoomuch.
3)Byusingthehomeworktimeafterclassandsparetime.
Thetraditionalconceptofthelaboratoryisexpandedtothebig-laboratoryconcept.
Thismeansthatstudentscanusethehomeworktimeafterclassandsparetimetodesignanddebugthesystemattheopeningtimeoflaboratoryorsomewhereelse.
SummaryInconclusion,thenewteachingreformthatcombinesthetheoryteaching,professionalcourses-penetratedinexperimentprojectandproject-orientedteachingmethods,canreallymakesurethattheteachingtheoryandpracticepromoteeachotherwell,andmakefulluseofthestudents'initiativeinlearningandcreativityinpractice.
Sotheteaching,takingtheVIcourseasacarrier,canimprovetheprofessionalcomprehensiveabilityofelectronicinformationmajors.
AcknowledgementsThisworkwasfinanciallysupportedbytheSichuanHigherEducationQualityandTeachingReformProject(2013-2016:393),theTeachingReformProjectofLeshanNormalUniversity(2013:20)andtheTeachingReformProjectofLeshanNormalUniversity(JG13-YB17).
References[1]YanfangFu,PenghuiTian,andJingMa:ResearchofExperimentTeachingbasedonVirtualInstrumentTechnology.
ETT.
Volume.
6.
455-457(2010)[2]LiuLina,ZhangBaofeng,andHanFangfang:TheApplicationofVirtualInstrumentintheTeachingReformoftheProfessionalComprehensiveExperiment.
EducationTeachingForum.
122-124.
23(2011).
[3]DandanYan,WenlongXu,BingqiaoXu,andGuishengTao:StudiesonExperimentofMeasurementTechnologyBasedonLabVIEWPlatform.
ETT.
Volume.
6.
153-156(2010)[4]XuZheng:TheGuidanceofVirtualInstrumentTechnologyandExperiment.
NationalInstruments(2013)[5]Informationonhttp://www.
ni.
com/academic/zhs/