1. Web-based Interrogation & Control of a Power Quality Data Acquisition Device

2. Jason Koberger Hardware Design Research Testing Melissa Wilson Documentation Hardware Design Research Glenn Wilson DESIGN TEAM: Dr. Mark Halpin Team Advisor Team Leader Web Page Software Design Research

3. Outline Power Quality Background Current Data Acquisition Device Problem Solution Design Constraints Test Specifications A Glimpse of the Future

4. Power Quality Background Relatively New Concept –Power Deregulation –Increased Technology What is Quality Power? –Reliable Operation –Proper Grounding & Wiring –Acceptable Signal Levels –Smooth Signal Waveforms

5. Current Data Acquisition Device Voltage Divider & “Dumb” Terminal Download Information from Data Acquisition Card Computer Required to Access Data

6. Problem Signal Information is not Readily Available –Remotely Nonexistent –On-site Must have computer available

7. Design Constraints Temperature: 0°-50° C Display Accuracy: min 1V; increment 1V min 0.1A; increment 0.1A Tri-State Status Indicator: Good, Marginal & Unacceptable Signal Levels Update Frequency: once per ½ second Browser Capability: Netscape & Microsoft

8. Design Constraints Server: Windows NT IIS Coordination: LCD display & Port Indicator Physical Packaging: Physical Constraints of Existing Device Communication Constraints: A/D Card or RS232 Serial Port Cost: $50.00

9. Approach Remotely –Web Interface Designed –Access Current Readings from Device –Access Historical Data from Device –Display Graph of Historical Information

10. Approach On-site –4-Channel Voltmeter –LED/LCD Display Added –Good/Bad Signal Indicator –Button(s) to Cycle Through LED/LCD Data

11. Test Specifications REQUIREMENTS CIRCUIT MODELING SOFTWARE TESTING & DEBUGGING THERMAL TESTING INSTRUMENT TESTING Temperature Display Accuracy Tri-State Status Indicator Update Frequency Browser Capability

12. Test Specifications REQUIREMENTS CIRCUIT MODELING SOFTWARE TESTING & DEBUGGING THERMAL TESTING INSTRUMENT TESTING Server Coordination Physical Packaging Communication Constraints Cost

13. Test Specs Description Circuit Modeling –Size Limitations –Within Budget Requirements –Correct Functionality Resources –AutoCAD 14 –Electronics Workbench 4.1

14. Test Specs Description Software Testing and Debugging –Virtual Circuit –Design Interface –Develop Server Components Resources –Microsoft Internet Information Server –Microsoft Visual C++ & Visual Basic –Forte for Java CE

15. Test Specs Description Thermal Testing –Functionality at Specified Temperature Range Resources –Space Heater –Thermocouple –Stopwatch

16. Test Specs Description Instrument Testing –Performed on Final Product –Accuracy of LED/LCD Display Tested –Coordination Between Display and Signal LED –Update Frequency Tested Resources –LabVolt Stations –Programmable Function Generators

17. A Glimpse of the Future

18. Questions?

19. References [1] “Home Power Quality,” http://energyoutlet.com/res/powerqual/index.html, Energy Outlet, Iris Communications, Inc, USA, 1996. [2] R. C. Dugan, M. F. McGranaghan, and H. W. Beaty, Electrical Power Systems Quality, McGraw-Hill, New York, New York, USA, p. 1-3, 1996. [3] W. M. Grady and A. H. Noyola, “End User and Electric Utility Perspectives,” Results of Power Quality Surveys in the United States, University of Texas at Austin, Austin, Texas, USA, 1995. [4] C. Peacock, “Interfacing the PC, ” http://www.beyondlogic.org/serial/serial3.htm, USA, February 28, 2000.

20. References [5] T. Cambra, “Developing a Visual Basic Component for IIS/MTS,” http://msdn.microsoft.com/workshop/server/components/vbmtsiis.asp, Microsoft Development Network, USA, June 19, 1998. [6] D. Adair, J. Ball, and M. Pawlan, “Trail: 2D Graphics,” http://web2.java.sun.com/ docs/books/tutorial/2d/index.html, Sun Microsystems, USA. [7 ] P. Coleman and M. Halpin, “Long Term Monitoring”, 1999 Southeastern Meter School & Conference, pp. 2-3, Birmingham, Alabama, USA, 1999. [8] W. Berry, “COM Objects and ASP,” http://msdn.microsoft.com/workshop/server/ asp/comtutorial.asp, Microsoft Development Network, USA, January 12, 1998.

21. References [9] “LCD Products,” http://www.eio.com/lcdprodt.htm, Electronics Information Online, USA, August 23, 2000. [10] “Newark Electronics” http://www.newark.com, Newark Electronics, USA, 2000. [11] R. Moffat, “ElectronicsCooling”, http://www.electronics- cooling.com/Resources/ECArticles/JAN97/jan97-01.htm, Stanford University, Stanford, California, USA, January 1997. [12] “California Instruments: Programmable AC Power Sources”, http://www.ixpres.com/calinst/acpower.htm, California Instruments, San Diego, California, USA, September 2000.