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Remote Power Meter

Remote Power Meter. Group 10 Steven Choi Sean Safavinejad April 25, 2007. Agenda:. Sean: Introduction of the Project Features and Benefits Power & Energy Steven: Board Design and Schematic Design Interface and RF Design Trouble Shooting Road to Future. Introduction. Benefits:

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Remote Power Meter

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  1. Remote Power Meter Group 10 Steven Choi Sean Safavinejad April 25, 2007

  2. Agenda: • Sean: • Introduction of the Project • Features and Benefits • Power & Energy • Steven: • Board Design and Schematic Design • Interface and RF Design • Trouble Shooting • Road to Future

  3. Introduction • Benefits: • Empowering the Consumer • Empowering the Provider • One Step Closer to the Future • Demand Capabilities • For UIUC energy efficiency • Features: • Small, Inexpensive, Easy to Implement • Non-invasive Installation

  4. Main Modules • Rogowski Coil • PCB Board • Power Chip ADE7753 • Atmel Atmega 2560 • Atmel AT86RF

  5. Power & Energy • Rogowski Coil: • Walter Rogowski • Helical coil of wire with the two terminals at the same end of the coil • Advantage over CT’s: • Open ended and flexible • Air core VS. Iron core • Low inductance, responsive to fast changing current • No saturation issues, responsive to high current

  6. Rogowski Coil • Output: • Voltage induced proportional to di/dt • Integrated Circuit required to output a signal proportional to current • ADE7753 • 0.1% Active Energy Accuracy • 0.5% Vrms and Irms Accuracy • 25mW Power Consumption

  7. ADE7753 • Active Power Calculations: • Reactive Power Calculations:

  8. RF Design • Range Criteria (30-40 meters) • Initial Gerber File Design using Makeview software • Purchasing the Whip Antenna • Transformer • Initial Schematics

  9. Programming Microcontroller • Micro.c • Power.c • Mem.c • RF.c

  10. Circuit Design • Initial Circuit Design Criteria • Parts Library • Board Design Phases • Final Schematic & Final Board

  11. Trouble Shooting

  12. Future Development • Building the Rowgowski Coil • Using the mounting method to process the boards • Publishing a paper to ACM • Install the Device into College of Business Building

  13. Parts Cost

  14. Conclusion • Special Thanks to… • PH.D Candidate Michael Lemay & Prof. Gunter (UIUC Security Group) • Part Shop – Mark Smart • Prof Swenson & T.A. Brain Raczkowski • Digi-key

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