Data Acquisition and Data Management System For AESD

1. ARD, Carderock Division, Bayview,ID Project Professors: Dr. Herb Hess & Dr. Brian Johnson Data Acquisition and Data Management System For AESD Authors: Jarred Coulter Vishu Gupta Zane Sapp Summer Research PresentationAugust 27th, 2008

2. Overview • Summary-Spring 2008 • National Instruments Data Acquisition System (DAQ) • Sensors • System Applications and Capabilities • Future Work-Fall 2008

3. Summary of Spring 2008 • Statement of Work • Deliverables • DAQ Solutions Researched • Potential Design Issues

4. Statement of Work • Designing a data acquisition system (DAQ) that will interface with the existing systems on the AESD. • Manage and display data from sensors for voltages, currents, and temperatures from the propulsion system and UPS system batteries. • Correlate above data with the GPS data available. • Graphical display: real-time and static • On board data storage buffer. • Expandable Architecture

5. Deliverables • Report of Potential design solutions • Recommended System Selection Report • Working prototype • Report on Final Configuration

6. DAQ’s Researched • IotechLogBook Stand Alone, Intelligent PC-Based Data Acquisition Systems Models 300 and 360. • IotechMultiScan 1200. • NI Compact DAQ Series

7. Potential Design Issues • Making sure these Systems can operate in an ungrounded system. • External Multiplexing controlled by the DAQ to allow for large number of inputs per channel. • The 500V Channel to Channel Isolation or common mode voltage rating is inadequate for high voltage from batteries.

8. National Instruments Data Acquisition System (DAQ) • System Architecture Overview • Hardware • Software

9. System Architecture

10. Benefits of NI Hardware • M-Series Data Acquisition Device • 1.25 Ms/s • Up to 280 Channels per DAQ Device with Current Configuration • 16-Bit ADC Resolution • MXI-Express Connection • 110 Mb/s and up to 250 Mb/s Transfer Rate • PC and Laptop Compatible • High Bandwidth Allows for Large Channel Count through Multiple Chassis • SCXI/PXI • Hundreds of Input Modules for wide range of Application • Rugged Chassis for Industrial Applications

11. DAQ System Hardware Data Acquisition System From National Instruments System Components • PXI/SCXI Combination Chassis • MXI Express Link • M-Series DAQ and PXI/SCXI Chassis Controller • 32-Channel Input Module/Multiplexer • I/O Connector M-Series DAQ (Not Shown) • Cast Screw Terminal Block for SCXI-1104C with Cold Junction Compensation

12. DAQ System Software • LabVIEW 8.2 • LabVIEW Signal Express • Measurement and Automation Controller (MAX)

13. LabVIEW 8.2 • Built in VI’s for Data Acquisition, Analysis, Storage, Display • Mathscript capabilities • Stores all data in an ASCII text file called LabVIEW Measurement File (LVM) • DAQmx and DAQ Assistant for Easier Programming

14. LabView Signal Express • No Programming Data Acquisition • Export Data Directly to Excel Spreadsheet or Text Editor • Real-Time Display

15. Measurement and Automation Controller (MAX) • Manage all the National Instruments Hardware • Automatically Detects all devices connected to system

16. Sensors • Isolation Amplifier Type Voltage Transducers • Designed my Own • Cost Around 5 Dollars • Hall Effect Voltage Transducers • Capable of accurately handling very high voltages • Cost around $250 per unit when bought in Bulk • LEM Current Transducers • Accurately Measure wide range of Currents • Cost around $400 per unit when bough in Bulk

17. Isolation Amplifier Schematic

18. Spice Simulation

19. Experimental Results

20. ABB Voltage Transducer LEM CV 3-500 Features • Closed Loop Hall Effect Voltage Transducer • Measuring range: 0 to 500 V • Output Voltage: 0 to 10 V (Max) • Supply Voltage: ± 15 VDC • ± 0.2% Accuracy at TA=25 ̊C

21. LEM Current Transducer LEM DC-C10 Features • DC Current Transducer • 3 Jumper Adjustable Ranges: 5, 10, 20 Amp Max • Supply Voltage: 20-50 VDC • ±1% Accuracy at TA=25 ̊C

22. System Applications and Capabilites • Monitoring of Propulsion System and UPS System Battery Banks • Battery Status • Voltage • Temperature • Charge Monitoring • Possible Feedback Control for Charging Schemes • Fuel Cell Monitoring • Harmonics Measurement and Analysis • Measuring waveforms • LabVIEW for Transforms and Harmonic Analysis

23. Future Work-Fall 2008 • LabVIEW Programming For: • Data Management • Storage • Display • Analysis • Switching Scheme for Controlling Sensors • Sensors Powered by Batteries • Need to be able to turn them off when not acquiring data • GPS Interface • Time Stamping • Link time to Master Clock • Location Stamping • Onboard Data Storage Buffer

24. Testing and Calculations • Testing • Determine Latency for Real Time • Determine Power Consumption • Calculate Cost Per Channel for Multiple Chassis Configuration • Determine Bandwidth for Multiple Chassis Configuration

25. Summary • Spring 2008 • SOW • Deliverables • DAQs • Design Issues • Summer 2008 • NI DAQ and LabVIEW Software • Sensors • Fall 2008 • LabVIEW Programming • Sensor power and control • Onboard storage • Testing

26. Acknowledgements ONR Alan Griffitts Frank Jurenka Karl Sette MRCI Dr. Brian K. Johnson Dr. Herbert L. Hess Karen Cassil Research Group John Finely Leo Lucklose Justin Schlee Sunan Huang James Randall