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Teaching Computer-Based Data Acquisition and Analysis Research Skills Using LabVIEW

Teaching Computer-Based Data Acquisition and Analysis Research Skills Using LabVIEW. John Essick Reed College. OUTLINE :. Reed Advanced Laboratory LabVIEW-Based Instruction Required Cost and Time for Instruction. BASIC RESEARCH SKILLS. Apply Classroom Theory

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Teaching Computer-Based Data Acquisition and Analysis Research Skills Using LabVIEW

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  1. Teaching Computer-Based Data Acquisition and Analysis Research Skills Using LabVIEW John Essick Reed College OUTLINE: • Reed Advanced Laboratory • LabVIEW-Based Instruction • Required Cost and Time for Instruction

  2. BASIC RESEARCH SKILLS Apply Classroom Theory Background Literature Searches Consultation With Experts Adequate Level of Precision Range of an Approximation Suppression of Competing Effects PHYSICAL UNDERSTANDING Electronics Computer-Assisted Data Acquisition Optics Vacuum Technology Data Analysis Techniques Design of Sophisticated Instrumentation Patience Consistency Checking DATA-TAKING SKILLS Outside Interest In Results Benefit Of Peer Review Honest, Timely, Concise Report of Results RESPONSIBILITY TO THE COMMUNITY

  3. BASIC RESEARCH SKILLS Apply Classroom Theory Background Literature Searches Consultation With Experts Adequate Level of Precision Range of an Approximation Suppression ofCompeting Effects PHYSICAL UNDERSTANDING Electronics Computer-Assisted Data Acquisition Optics Vacuum Technology Data Analysis Techniques Design of Sophisticated Instrumentation Patience Consistency Checking DATA-TAKING SKILLS Outside Interest In Results Benefit Of Peer Review Honest, Timely, Concise Report of Results RESPONSIBILITY TO THE COMMUNITY

  4. REED JUNIOR-LEVEL ADVANCED LAB Novice Student ELECTRONICS Amplifier, Filter, Oscillator, Logic A/D, D/A Hardware Microprocessor Assembly Language COMPUTER (Low-Level) Guided and Independent Experiments PHYSICS Autonomous Researcher Senior Thesis Summer Internship Graduate School Career

  5. REED JUNIOR-LEVEL ADVANCED LAB Novice Student ELECTRONICS Amplifier, Filter, Oscillator, Logic Data Acquisition Board Communicate via Interface Bus Symbolic Language Data Analysis COMPUTER (High-Level) Guided and Independent Experiments PHYSICS Autonomous Researcher Senior Thesis Summer Internship Graduate School Career

  6. OCCIDENTAL SOLID STATE LAB EXPERIENCE Require Students to Write GPIB Code (BASIC, FORTRAN, C): 10 REAL Rdg 20 ASSIGN @Dmm TO 722 30 OUTPUT @Dmm; “MEASURE:VOLTAGE:DC? 10,0.003” 40 ENTER @Dmm; Rdg 50 PRINT Rdg 60 END

  7. OCCIDENTAL SOLID STATE LAB EXPERIENCE Require Students to Write GPIB Code (BASIC, FORTRAN, C): 10 REAL Rdg 20 ASSIGN @Dmm TO 722 30 OUTPUT @Dmm; “MEASURE:VOLTAGE:DC? 10,0.003” 40 ENTER @Dmm; Rdg 50 PRINT Rdg 60 END Lesson Learned for Computer-Based Instruction: Need to Teach a Programming Language (with Short Learning Curve)

  8. ADVANTAGES OF LABVIEW SYSTEM 1. Well-Designed, Popular System LabVIEW System Multi-Function Data Acquisition (DAQ) General Purpose Interface Bus (GPIB) Computer LabVIEW Software National Instruments Products

  9. ADVANTAGES OF LABVIEW SYSTEM 1. Well-Designed, Popular System LabVIEW System Multi-Function Data Acquisition (DAQ) General Purpose Interface Bus (GPIB) Computer LabVIEW Software National Instruments Products • Integrated Hardware & Software • Extensive Data Acquisition & Analysis Capabilities • Widely Used in Research Labs

  10. ADVANTAGES OF LABVIEW SYSTEM 2. LabVIEW Programming Language is Graphical Block Diagram (Program Code): Front Panel (User Interface):

  11. ADVANTAGES OF LABVIEW SYSTEM 2. LabVIEW Programming Language is Graphical Block Diagram (Program Code): • Novel • Intuitive • Do Useful Things Quickly Front Panel (User Interface):

  12. ADVANTAGES OF LABVIEW SYSTEM 3. Express VIs for Streamlined Programming of Common Tasks

  13. Digital Oscilloscope Using DAQ Assistant Express VI

  14. Digital Oscilloscope Using DAQ Assistant Express VI

  15. Digital Oscilloscope Using DAQ Assistant Express VI

  16. Thermistor Calibration Using Curve Fit Express VI Steinhart-Hart Equation:

  17. Digital Thermometer A/D Voltage Temperature Ohm’s Law Steinhart-Hart Software

  18. ADVANTAGES OF LABVIEW SYSTEM 4. Flexibility is Ideal for Independent Projects DAQ Assistant Digital Oscilloscope

  19. ADVANTAGES OF LABVIEW SYSTEM 4. Flexibility is Ideal for Independent Projects DAQ Assistant FFT Spectrum Analyzer

  20. OVERVIEW OF LABVIEW INSTRUCTION • Week 1: Structures and Plotting (6 Hours) • While Loop and Waveform Chart • For Loop and Waveform Graph • Mathscript Node and XY Graph • Week 2: Data Acquisition and Generation with DAQ Assistant (3 Hours) • Analog-to-Digital Conversion, Digital Oscilloscope • Digital-to-Analog Conversion, Function Generator • Week 3: Data Files, Local Variables, Structures (6 Hours) • Data Files and Character Strings • Shift Registers • Case Structure • Sequence Structure • Week 4: Data Analysis (3 Hours) • Least-Squares Curve Fitting, Digital Thermometer • Fast Fourier Transform, Spectrum Analyzer • Week 5: PID Temperature Control System (3 Hours) • Spring Semester: Instrument Control viaInterface Bus (4 Hours) • GPIB/USB Control of Instrument Oxford University Press

  21. DATA FILES Spreadsheet Format DATA ANALYSIS Numerical Integration Numerical Differentiation Curve Fitting Fast Fourier Transform DATA ACQUISITION Digital Oscilloscope Function Generator Digital Thermometer Spectrum Analyzer PID Temperature Control System GPIB/USB CONTROL Agilent 34410A Multimeter

  22. SPRING-SEMESTER PHYSICS EXPERIMENTS Guided Experiments: • Optical Bandgap of Semiconductor (Monochromator) • Doppler-Free Saturated Absorption Spectroscopy (Laser Diode) • Temperature Dependence of Diode’s Saturation Current (Cryostat) • Isotope Shift of Balmer Series in Hydrogen (Spectrometer) • Mass of Cosmic Ray Muon (Fast-Timing Electronics) • Fabrication of Fullerenes (Materials Fabrication) • Proof of Existence of Photons (Single-Photon Detection)

  23. Chaotic Circuit (Kiers et al, AJP 72, 503) LabVIEW

  24. High-Temperature Superconductor Four-Probe Resistance LabVIEW Agilent 34410A Insulated Sample GPIB Thermocouple Agilent 34410A Thermocouple Voltage

  25. COST 1. PCIe-6351: ($1400): Analog Input 16-Bit, 1.25 MSample/s Analog Output 16-Bit, 2.86 MSample/s 2. USB-6009: ($250): Analog Input 14-Bit, 48 kSample/s Analog Output 12-Bit, 150 Sample/s Limited Signal Generation 3. myDAQ: ($199 for Students): Analog Input 16-Bit, 200 kSample/s Analog Output 16-Bit, 200 kSample/s No Hardware Triggering

  26. TIME 1. Seven-Week Intermediate Skill Level 2. Three-Week Introduction (Basic LabVIEW + DAQ Assistant) 3. Student Edition of LabVIEW $20 Learn Programming as Homework Control Hardware in Lab 4. myDAQ + Student Edition of LabVIEW $199 Learn Programming and Control Hardware as Homework

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