Authors: Jarred Coulter Vishu Gupta Zane Sapp ARD, Carderock Division, Bayview,ID Project Professors: Dr. Herb Hess & Dr. Brian Johnson Summer Research Presentation August 27th, 2008

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

Statement of Work Deliverables DAQ Solutions Researched Potential Design Issues 3

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 4

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

Iotech LogBook Stand Alone, Intelligent PC-Based Data Acquisition Systems Models 300 and 360. Iotech MultiScan NI Compact DAQ Series 6

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. 7

System Architecture Overview Hardware Software 8

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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 10

DATA ACQUISITION SYSTEM FROM NATIONAL INSTRUMENTS SYSTEM COMPONENTS 1. PXI/SCXI Combination Chassis 2. MXI Express Link 3. M-Series DAQ and PXI/SCXI Chassis Controller Channel Input Module/Multiplexer 5. I/O Connector M-Series DAQ (Not Shown) 6. Cast Screw Terminal Block for SCXI-1104C with Cold Junction Compensation 11

LabVIEW 8.2 LabVIEW Signal Express Measurement and Automation Controller (MAX) 12

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 13

No Programming Data Acquisition Export Data Directly to Excel Spreadsheet or Text Editor Real-Time Display 14

Manage all the National Instruments Hardware Automatically Detects all devices connected to system 15

16 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

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LEM CV 3-500FEATURES 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 T A =25 ̊ C 20

LEM DC-C10FEATURES DC Current Transducer 3 Jumper Adjustable Ranges: 5, 10, 20 Amp Max Supply Voltage: VDC ±1% Accuracy at T A =25 ̊ C 21

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 22

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 23

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

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 25

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