teaching computer-based data acquisition and analysis research skills using labview
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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 - PowerPoint PPT PresentationTRANSCRIPT
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Teaching Computer-BasedData Acquisition and Analysis
Research Skills Using LabVIEWJohn Essick
Reed College
•Reed Advanced Laboratory•LabVIEW-Based Instruction•Required Cost and Time for Instruction
OUTLINE:
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BASIC RESEARCH SKILLSApply Classroom TheoryBackground Literature SearchesConsultation With ExpertsAdequate Level of PrecisionRange of an ApproximationSuppression of Competing Effects
ElectronicsComputer-Assisted Data AcquisitionOpticsVacuum TechnologyData Analysis TechniquesDesign of Sophisticated InstrumentationPatienceConsistency Checking
Outside Interest In ResultsBenefit Of Peer ReviewHonest, Timely, Concise Report of Results
PHYSICAL UNDERSTANDING
DATA-TAKING SKILLS
RESPONSIBILITY TO THE COMMUNITY
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BASIC RESEARCH SKILLSApply Classroom TheoryBackground Literature SearchesConsultation With ExpertsAdequate Level of PrecisionRange of an ApproximationSuppression of Competing Effects
ElectronicsComputer-Assisted Data AcquisitionOpticsVacuum TechnologyData Analysis TechniquesDesign of Sophisticated InstrumentationPatienceConsistency Checking
Outside Interest In ResultsBenefit Of Peer ReviewHonest, Timely, Concise Report of Results
PHYSICAL UNDERSTANDING
DATA-TAKING SKILLS
RESPONSIBILITY TO THE COMMUNITY
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REED JUNIOR-LEVEL ADVANCED LAB
Amplifier, Filter, Oscillator, Logic
A/D, D/A HardwareMicroprocessor
Assembly Language
Guided and Independent Experiments
NoviceStudent
ELECTRONICS
PHYSICS
COMPUTER(Low-Level)
AutonomousResearcher
Senior ThesisSummer Internship
Graduate SchoolCareer
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REED JUNIOR-LEVEL ADVANCED LAB
Amplifier, Filter, Oscillator, Logic
Guided and Independent Experiments
NoviceStudent
ELECTRONICS
PHYSICS
COMPUTER(High-Level)
AutonomousResearcher
Senior ThesisSummer Internship
Graduate SchoolCareer
Data Acquisition BoardCommunicate via Interface Bus
Symbolic LanguageData Analysis
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OCCIDENTAL SOLID STATE LAB EXPERIENCE
Require Students to Write GPIB Code (BASIC, FORTRAN, C):
10 REAL Rdg20 ASSIGN @Dmm TO 72230 OUTPUT @Dmm;
“MEASURE:VOLTAGE:DC? 10,0.003”40 ENTER @Dmm; Rdg50 PRINT Rdg60 END
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OCCIDENTAL SOLID STATE LAB EXPERIENCE
Require Students to Write GPIB Code (BASIC, FORTRAN, C):
10 REAL Rdg20 ASSIGN @Dmm TO 72230 OUTPUT @Dmm;
“MEASURE:VOLTAGE:DC? 10,0.003”40 ENTER @Dmm; Rdg50 PRINT Rdg60 END
Lesson Learned for Computer-Based Instruction:
Need to Teach a Programming Language (with Short Learning Curve)
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ADVANTAGES OF LABVIEW SYSTEM1. Well-Designed, Popular System
Computer Multi-Function Data Acquisition (DAQ)General Purpose Interface Bus (GPIB)
LabVIEWSoftware
National Instruments Products
LabVIEW System
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ADVANTAGES OF LABVIEW SYSTEM1. Well-Designed, Popular System
Computer Multi-Function Data Acquisition (DAQ)General Purpose Interface Bus (GPIB)
LabVIEWSoftware
National Instruments Products
•Integrated Hardware & Software
•Extensive Data Acquisition & Analysis Capabilities
•Widely Used in Research Labs
LabVIEW System
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ADVANTAGES OF LABVIEW SYSTEM2. LabVIEW Programming Language is Graphical Block Diagram (Program Code):
Front Panel (User Interface):
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ADVANTAGES OF LABVIEW SYSTEM2. LabVIEW Programming Language is Graphical Block Diagram (Program Code):
Front Panel (User Interface):
•Novel
•Intuitive
•Do Useful Things Quickly
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3. Express VIs for Streamlined Programming of Common TasksADVANTAGES OF LABVIEW SYSTEM
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Digital Oscilloscope Using DAQ Assistant Express VI
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Digital Oscilloscope Using DAQ Assistant Express VI
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Digital Oscilloscope Using DAQ Assistant Express VI
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Thermistor Calibration Using Curve Fit Express VI
Steinhart-Hart Equation:
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Digital Thermometer
A/DOhm’s Law
Steinhart-Hart
Voltage Temperature
Software
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4. Flexibility is Ideal for Independent Projects
Digital OscilloscopeDAQ Assistant
ADVANTAGES OF LABVIEW SYSTEM
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4. Flexibility is Ideal for Independent Projects
Spectrum AnalyzerDAQ Assistant
ADVANTAGES OF LABVIEW SYSTEM
FFT
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OVERVIEW OF LABVIEW INSTRUCTIONWeek 1: Structures and Plotting (6 Hours)
While Loop and Waveform ChartFor Loop and Waveform GraphMathscript Node and XY Graph
Week 2: Data Acquisition and Generation with DAQ Assistant (3 Hours)Analog-to-Digital Conversion, Digital OscilloscopeDigital-to-Analog Conversion, Function Generator
Week 3: Data Files, Local Variables, Structures (6 Hours)Data Files and Character StringsShift RegistersCase StructureSequence Structure
Week 4: Data Analysis (3 Hours)Least-Squares Curve Fitting, Digital ThermometerFast Fourier Transform, Spectrum Analyzer
Week 5: PID Temperature Control System (3 Hours)
Spring Semester: Instrument Control via Interface Bus (4 Hours)GPIB/USB Control of Instrument
Oxford University Press
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DATA FILESSpreadsheet Format
DATA ANALYSISNumerical IntegrationNumerical DifferentiationCurve Fitting Fast Fourier Transform
DATA ACQUISITIONDigital OscilloscopeFunction GeneratorDigital ThermometerSpectrum AnalyzerPID Temperature Control System
GPIB/USB CONTROLAgilent 34410A Multimeter
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SPRING-SEMESTER PHYSICS 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)
Guided Experiments:
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Chaotic Circuit
LabVIEW
(Kiers et al, AJP 72, 503)
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High-Temperature Superconductor
Agilent 34410A
Four-Probe Resistance
Agilent 34410A
Thermocouple
Thermocouple Voltage
LabVIEW
GPIB
InsulatedSample
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COST
1. PCIe-6351: ($1400):
2. USB-6009: ($250):
3. myDAQ: ($199 for Students):
Limited Signal Generation
Analog Input 16-Bit, 1.25 MSample/sAnalog Output 16-Bit, 2.86 MSample/s
No Hardware Triggering
Analog Input 16-Bit, 200 kSample/sAnalog Output 16-Bit, 200 kSample/s
Analog Input 14-Bit, 48 kSample/sAnalog Output 12-Bit, 150 Sample/s
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TIME
1. Seven-Week Intermediate Skill Level
2. Three-Week Introduction (Basic LabVIEW + DAQ Assistant)
3. Student Edition of LabVIEW $20 Learn Programming as HomeworkControl Hardware in Lab
4. myDAQ + Student Edition of LabVIEW $199
Learn Programming and Control Hardware as Homework