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The Development of NI-ELVIS

Paul K. Dixon and Timothy D. Usher Department of Physics California State University San Bernardino. The Development of NI-ELVIS. I. Past: Applied Physics Instruction at CSUSB and our “Integrated” Student Station II. Present: The Development and Maturation of NI-ELVIS. Introduction.

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The Development of NI-ELVIS

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  1. Paul K. Dixon and Timothy D. Usher Department of Physics California State University San Bernardino The Development ofNI-ELVIS

  2. I. Past: Applied Physics Instruction at CSUSB and our “Integrated” Student Station II. Present: The Development and Maturation of NI-ELVIS Introduction Outline

  3. 1994: an NSF ILI grant to equip the electronics laboratory using LabVIEW and fully-interfaced equipment 1995: Physics 150 – Introductory Analog Electronics at the freshman level (before calculus, before intro physics) Ohms Law to Lock-in Amplifiers in 10 weeks 1996: Physics 350 – Computer-based Data Acquisition and Control at the junior level LabVIEW, GPIB, DAQ, Experiment Interfacing, Control Theory, ITR Filtering, PID, State Machines 1997: Physics 352 – Advanced Electronics at the senior level Linear Response Theory, Integral Transforms, Analog and Digital Communication Theory, Noise Analysis, ORCAD PSPICE I. Past Applied Physics Instruction at CSUSB - An Overview

  4. Instructor station/server with LCD projector Windows 2000 peer-to-peer network, no outside line 12 Student Stations I. Past The Student Station Hardware • 850 MHz Pent III • 17” Display • LabVIEW • PCI DAQ • Protection • Module • PCI GPIB • HP Scope • HP FG • HP DMM • Elenco Trainer

  5. Simple launcher for tutorials and instruments LabVIEW 3.1 - 1994 I. Past The Integrated Software Environment for FreshmanElectronics

  6. GPIB DMM Function Generator Scope DAQ Scope Arbitrary FG Voltmeter Counter Pulse Generator Digital I/O Amalgam Bode – GPIB FG & GPIB Scope Two-point IV Curve – GPIB DMM & DAQ Arbitrary FG I. Past Virtual and Amalgam Instruments for Freshman Electronics

  7. A standard project in the 7th week GPIB Instrument Driver, DAQ Analog IO, Feedback Control Theory I. Past Junior LV Project – A PID Controller The “Bug” The power boosting circuit • Control References, VI Server, etc.

  8. Final Project - 2001 Circular Buffered Analog In, Digital IO, State Machines I. Past Junior LV Project - A Seismograph Impulsive Tester - a sprinkler solenoid Seismometer - a weighted speaker

  9. Final Project - 2000 Buffered Analog In, Inline IIR Digital Filtering, Digital IO, State Machines I. Past Junior LV Project - Phototrope Angled binocular photoresistive eyes, photogate “OWL neck” sensor, and a bi-directional two-speed baby-swing motor drive system

  10. Fixed Breadboard Wear and Tear Dedicated circuits – makes concurrent sections impossible Wiring must be done in lab Instructor continually building demo circuits! Standard DAQ Limited power in analog out GPIB Instruments Difficult to integrate with DAQ, chunky communication The Solution Integrate the DAQ interface and the trainer into a single unit with a removable breadboard and protection module Add the functionality of the GPIB Instruments into the integrated trainer I. Past The Limitations of our Past Approach

  11. 1994 : Designed and built the initial protection modules for our precious AT-MIO-16 cards 1998 : Designed and tested the Integrated Electronics Design Station (IEDS) communication module at a student station 1999-2000 : Designed and built IEDS and showed it to NI Summer 2001: Designed and built the Universal Laboratory Instructional Station (ULIS) feasibility prototype in collaboration with NI (Steven Romero, Anne Goshorn, Jeff Hall) Fall 2001 to the Present : Happily watched NI design and build the Educational Laboratory Virtual Instrument Suite (ELVIS) II. Present The Development and Maturation of NI - ELVIS - An Overview

  12. 1998 - 2000 Fully Functional Major Power – 30 Watts! All of the capability through a 68 pin E-series card and about 70 chips II. Present IEDS: The Integrated ElectronicsDesign Station - The Functional Prototype

  13. Summer 2001 – a blur! The NI Design Team: Steven Romero, Anne Goshorn, Jeff Hall ULIS Impedance Meter ULIS Function Generator II. Present ULIS: The Universal LaboratoryInterfacing System - The Feasibility Prototype

  14. Fall 2001 – present Any 68-pin E-series DAQ card DMM and Scope on both breadboard and front panel External power block ~ 18 Watts to breadboard Finally, a main power switch! II. Present NI - ELVIS: The Educational Laboratory Virtual Instrument Suite

  15. The Breadboard 392 undedicated tie points Removable – 3 ring binder BNC, Banana, 9-pin Dsub Power LEDS Logic LEDS II. Present NI - ELVIS: Hardware Features The Protection Module • High current lines fused • Low current lines – sacrificial inline resistors • Power and DAQ interlock • Replaceable in under a minute

  16. II. Present NI - ELVIS: The Current Instrument Software

  17. Green– NI reworked and polished Blue– My “hacked” examples in the process of being reworked by NI Black– capabilities built into the hardware, on the “to-do” list Addressable Digital I/O – allows for 16 bytes of write and 16 bytes of read to plug-in board @ approximately 250 Hz ELVIS can read the plug-in board ID (0-255) allowing for a variety of dedicated boards with linked software II. Present NI - ELVIS: Capabilities and Future Instrument Software

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