Exploring didactic possibilities of an electronicdevices remote lab with students of ElectronicEngineeringExploring didact...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
A remote lab like an educationalresource in the teaching of thePhysics of electronic devicesA remote lab like an education...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC PO...
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Exploring didactic possibilities of an electronic devices remote lab with students of Electronic Engineering

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This paper presents some results of an exploratory study carried out with the
collaboration of students, whose aim was to examine the teaching potential of a selfdeveloped
remote lab, called “Electronic Physics Remote Lab”. The remote lab
allows us, among other things, to test different kinds of diodes and transistors.
Students of Electronic Engineering attending Physics IV have been asked to use the
remote lab for the development of the following activities: a) to study the development
of different junctions and infer about their constructive features and b) to obtain
parameters of the devices under different test conditions, and to explain the behaviors
observed from the point of view of the physical processes. Besides, students prepared
test reports of the remote lab.

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Exploring didactic possibilities of an electronic devices remote lab with students of Electronic Engineering

  1. 1. Exploring didactic possibilities of an electronicdevices remote lab with students of ElectronicEngineeringExploring didactic possibilities of an electronicdevices remote lab with students of ElectronicEngineeringICBL 2009 – http://www.icbl-conference.org/November 05 - 07, 2009 Florianopolis, BrazilFederico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and Land SurveyingNational University of Rosario, Rosario, Argentina
  2. 2. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGWe present some results of anexploratory study carried out with thecollaboration of students, whose aim wasto examine the teaching potential of a selfdeveloped remote lab, called “ElectronicPhysics Remote Lab”.The aimof the paperThe aimof the paper
  3. 3. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGWhat are they?They are laboratories where the experiments can be carriedout remotelyThe degree of functionality and level of user access hasevolved thanks to advances in web applications andtechnologiesAdvantagesAllow the students to use the laboratory at any timeThe same equipment can be use by all the students andshared with other institutionsThey are very effectives for e-learning purposesRemote LaboratoriesRemote Laboratories
  4. 4. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGObjectivesObtain the static characteristic of four different semiconductordevices (Diodes, BJT, J-Fet and Phototransistor)Choose different test points and analyze resultsCalculate some of the devices parametersMain FeaturesTest several semiconductor devices at the same laboratoryWeb Browser independence (compatible with Mozilla, InternetExplorer, Opera, etc)No use of plug-in or applets (only HTML)Simple, intuitive and easy-to-use interfaceFirst Remote LaboratoryFirst Remote Laboratory
  5. 5. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGHardware and SoftwareHardware and SoftwarePCMicrosoft Windows XPIIS 5.1 (web server)Microsoft Visual Basic 6.0Microsoft Visual Studio .Net 2003 and .Net Framework 1.1Microsoft Office Web Components 10National Instrument DAQ Legacy Device DriverNational Instruments DAQ-12008 analog input channels2 analog output channels3 input/output digital 8-bit ports
  6. 6. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGHardware and SoftwareHardware and SoftwareCustom board5-test circuits and device selector• Diode (direct polarization)• Zener Diode (voltage regulation polarization)• Bipolar Junction Transistor (BJT)• Junction Field-Effect Transistor (J-FET)• PhototransistorDigitally controlled Power sources• DC Positive voltage• DC Negative voltage• DC Current
  7. 7. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGCustom BoardCustom BoardPower Supply StageCircuit SelectorSemiconductor DevicesDAQ Card Connector
  8. 8. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGSystem ArchitectureSystem Architecture
  9. 9. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGSoftware’s procedureSoftware’s procedureTCP/IPTCP/IPRequestRequestWinsockWinsockTCP/IPTCP/IPNI DAQNI DAQDriverDriverOutputOutputDigitalDigitalPortsPortsInputInputAnalogAnalogChannelsChannels
  10. 10. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGWe think that the remote lab integrated into the carryingout of significant open and complex problem solutionactivities may help students develop abilities in:The stand-alone resolution of tasks, the putting into practice ofreflexive and pro-active attitudes, the planning, the self-controlof learning activitiesThe observation, interpretation and analysis of results in a waythat is similar to what researchers do.Interpretation results in order to account for the behaviour ofbasic electronic devices under different experimental conditionsfrom a scientific perspective.The analysis and construction of technological models.Experimental trial through some usual working methodology inworking spaceDidactic possibilities (as hypothesis)Didactic possibilities (as hypothesis)
  11. 11. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGThe experimental dictationThe experimental dictationParticipants: 12 students within thesyllabus of the subject Physics IVbelonging to the career of ElectronicsEngineering (UNR)Topics Junctions and BJT Transistors.Instruction based on a constructivistapproach (student centered approach)Balance between Computer BasedLong Distance Education, traditionalteaching and learning technologies
  12. 12. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGThe researchThe researchInitial contact with the remote lab once thefirst unit corresponding to Junctions hadbeen finished.The students’ received an explanation onthe most important existing differencesbetween this “real lab” and the simulations“virtual lab” that they were familiar withEach student was given a user name and apassword of their own.Students observed a round of screens,resources, possible requirements andoperating capacity recognition
  13. 13. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGStudents solved the learning activities on theirown through the use of the remote lab, outside theclassroom.The submission of the corresponding reportscontaining the solution to the activities wasarranged in two weeks (time devoted to each topicinvolved).Once the experimental dictation was over, thestudents were asked to prepare a test report ofthe remote lab including, in a free writing format,an analysis of its benefits from an educationalpoint of view, apart from the critics andsuggestions for its improvement.The researchThe research
  14. 14. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGThe learning activitiesThe learning activitiesThe students were asked:To study the behaviour of different junctions (silicon andgermanium rectifying diode, breakdown diode, base-emitter junction and BJT base-collector junction, leddiode) and to infer about the constructive features.To obtain characteristic parameters of devices (such as,η in the case of a diode; the current gain β in common-emitter connection and output dynamic resistance, in thecase of a BJT) under different rehearsing conditions(different temperatures) and to explain the observedbehaviours from the perspective of the physicalprocesses involved.
  15. 15. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGThe ResultsThe ResultsAll the students carried out tests with all thedevices enabledNot all the students made individual test reports.Only 5 reports were availableAll the reports included assessingconsiderations and specific suggestions aboutthe design of the interface and the functionalityof the remote lab;One report also included, the description andexplanation of each test and the resultsobtained, accompanied by charts and graphics.The observations carried out by students wereanalyzed, grouped and categorized.
  16. 16. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGThe resultsThe results
  17. 17. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGTaking into account the students’Taking into account the students’suggestionssuggestionsSome changes in the hardware and software as well as in theinterface which allow to:Obtain and display in one test the diode complete curve.Obtain and display the bijunction transistor temperaturevariation curve in one graphic (in order to be able tocompare them)Change the scale of the axis of the curves shown in orderto be able to observe better certain features of eachdevice.Addition of new test devices: unijunction transistor, four-layer diode (Shockley), multicoloured led, germaniumbijunction transistor and other variations of bijunctiontransistors.Improvement of the interface of tests selection
  18. 18. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGConclusionsConclusionsThe didactic potentiality of the remote labThe remote lab allowed students to test and to obtaindifferent kinds of voltage-current diode, bijunction and J-Fet transistors curves as well as to make significantanalysis of the physical processes wanted through theresolution of the activities suggestedThe degree of appropriation of this tool by students seemsto have gone beyond the objectives of the study. Thestudents develop more tests (not only the required ones)They have used the remote lab as a complementaryresource to the traditional lab; they have dared to suggesttests with new objectives and to ask for the addition ofother devices which are a matter of study in this chair.
  19. 19. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGThe students showed themselves favorablypredisposed along the study and have gotinvolved making decisions about their ownlearning processThey have done interesting valuations andimprovement suggestions.The results encourage new experiences andalso make it possible to state that the remote labmay become a valuable teaching resource forthe training of engineers.ConclusionsConclusions
  20. 20. A remote lab like an educationalresource in the teaching of thePhysics of electronic devicesA remote lab like an educationalresource in the teaching of thePhysics of electronic devicesICBL 2009Florianópolis (Brazil) – November, 5-7Federico Lerro, Susana Marchisio, Miguel Plano,Mauro Protano, Oscar Von PamelFaculty of Exact Sciences, Engineering and Land SurveyingNational University of Rosario, Rosario, Argentina
  21. 21. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGWe think that the teaching action must be conceivedlike a generator of learning situations in both realand virtual environments / real and simulatedsignificative practices, with the aim of promoting:Achievement of autonomy in the resolution of scientificand tecnological tasks, in the application of concepts, inthe implementation of reflexive and pro-active attitudes;Planning efficiently, choosing strategies, testing processesand products, acquiring self-control of the learningactivities themselves.Looking fordidactic reasonsLooking fordidactic reasons
  22. 22. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGhttp://labremf4.fceia.unr.edu.ar
  23. 23. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGLooking fordidactic reasonsLooking fordidactic reasonsLEARNING OUTCOMES / Some importantcompetences to be developed in Engineering EducationJudge products of researchIntegrate tools and techniques, ability to abstract, recognizefundamental conceptsMake a research planCarry out a given research planFormulate hypothesis and test validityUse a base of techniques and toolsJudge how and when to use specific techniquesComprehend new techniquesEffective and efficient modeling (right level of abstraction)Problem-solving, information technology, and team workingskills
  24. 24. Federico Lerro, Susana Marchisio, Oscar Von PamelFaculty of Exact Sciences, Engineering and SurveyingEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGEXPLORING DIDACTIC POSSIBILITIES OF AN ELECTRONIC DEVICES REMOTE LAB WITH STUDENTS OF ELECTRONIC ENGINEERINGThe remote lab facilitates the students’ access to aseries of physic systems at any time and place.The lab is also very valuable as a means of conceptintegration making possible that students and teacherscan work together interactively in class attendance, andso enriching their technical approaches withobservations and experimental analyses carried out atthe “right time”ConclusionsConclusions

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