Teaching Computer-Based Data Acquisition and Analysis Research Skills Using LabVIEW OUTLINE: John Essick Reed College Reed Advanced Laboratory LabVIEW-Based Instruction Required Cost and Time for Instruction
PHYSICAL UNDERSTANDING BASIC RESEARCH SKILLS Apply Classroom Theory Background Literature Searches Consultation With Experts Adequate Level of Precision Range of an Approximation Suppression of Competing Effects DATA-TAKING SKILLS RESPONSIBILITY TO THE COMMUNITY Electronics Computer-Assisted Data Acquisition Optics Vacuum Technology Data Analysis Techniques Design of Sophisticated Instrumentation Patience Consistency Checking Outside Interest In Results Benefit Of Peer Review Honest, Timely, Concise Report of Results
PHYSICAL UNDERSTANDING BASIC RESEARCH SKILLS Apply Classroom Theory Background Literature Searches Consultation With Experts Adequate Level of Precision Range of an Approximation Suppression of Competing Effects DATA-TAKING SKILLS RESPONSIBILITY TO THE COMMUNITY Electronics Computer-Assisted Data Acquisition Optics Vacuum Technology Data Analysis Techniques Design of Sophisticated Instrumentation Patience Consistency Checking Outside Interest In Results Benefit Of Peer Review Honest, Timely, Concise Report of Results
REED JUNIOR-LEVEL ADVANCED LAB Novice Student ELECTRONICS Amplifier, Filter, Oscillator, Logic COMPUTER (Low-Level) A/D, D/A Hardware Microprocessor Assembly Language PHYSICS Guided and Independent Experiments Autonomous Researcher Senior Thesis Summer Internship Graduate School Career
REED JUNIOR-LEVEL ADVANCED LAB Novice Student ELECTRONICS Amplifier, Filter, Oscillator, Logic COMPUTER (High-Level) Data Acquisition Board Communicate via Interface Bus Symbolic Language Data Analysis PHYSICS Guided and Independent Experiments Autonomous Researcher Senior Thesis Summer Internship Graduate School Career
OCCIDENTAL SOLID STATE LAB EXPERIENCE Require Students to Write GPIB Code (BASIC, FORTRAN, C): 10 20 30 40 50 60 REAL Rdg ASSIGN @Dmm TO 722 OUTPUT @Dmm; MEASURE:VOLTAGE:DC? 10,0.003 ENTER @Dmm; Rdg PRINT Rdg END
OCCIDENTAL SOLID STATE LAB EXPERIENCE Require Students to Write GPIB Code (BASIC, FORTRAN, C): 10 20 30 40 50 60 REAL Rdg ASSIGN @Dmm TO 722 OUTPUT @Dmm; MEASURE:VOLTAGE:DC? 10,0.003 ENTER @Dmm; Rdg PRINT Rdg END Lesson Learned for Computer-Based Instruction: Need to Teach a Programming Language (with Short Learning Curve)
ADVANTAGES OF LABVIEW SYSTEM 1. Well-Designed, Popular System LabVIEW System Computer Multi-Function Data Acquisition (DAQ) General Purpose Interface Bus (GPIB) LabVIEW Software National Instruments Products
ADVANTAGES OF LABVIEW SYSTEM 1. Well-Designed, Popular System LabVIEW System Computer Multi-Function Data Acquisition (DAQ) General Purpose Interface Bus (GPIB) LabVIEW Software National Instruments Products Integrated Hardware & Software Extensive Data Acquisition & Analysis Capabilities Widely Used in Research Labs
ADVANTAGES OF LABVIEW SYSTEM 2. LabVIEW Programming Language is Graphical Block Diagram (Program Code): Front Panel (User Interface):
ADVANTAGES OF LABVIEW SYSTEM 2. LabVIEW Programming Language is Graphical Block Diagram (Program Code): Novel Front Panel (User Interface): Intuitive Do Useful Things Quickly
ADVANTAGES OF LABVIEW SYSTEM 3. Express VIs for Streamlined Programming of Common Tasks
Digital Oscilloscope Using DAQ Assistant Express VI
Digital Oscilloscope Using DAQ Assistant Express VI
Digital Oscilloscope Using DAQ Assistant Express VI
Thermistor Calibration Using Curve Fit Express VI Steinhart-Hart Equation:
Digital Thermometer A/D Voltage Ohm s Law Steinhart-Hart Temperature Software
ADVANTAGES OF LABVIEW SYSTEM 4. Flexibility is Ideal for Independent Projects DAQ Assistant Digital Oscilloscope
ADVANTAGES OF LABVIEW SYSTEM 4. Flexibility is Ideal for Independent Projects DAQ Assistant FFT Spectrum Analyzer
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 via Interface Bus (4 Hours) GPIB/USB Control of Instrument Oxford University Press
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
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)
Chaotic Circuit (Kiers et al, AJP 72, 503) LabVIEW
High-Temperature Superconductor Insulated Sample Four-Probe Resistance Agilent 34410A LabVIEW Thermocouple GPIB Agilent 34410A Thermocouple Voltage
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
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