1. Watt Watch Hassan Alabudib Yirui Huang Peng Chen Kamal Sabi Marisol Lozano Roman

2. Overview • Main objectives • System’s general description • Project Features • Possible extensions • System’s block diagram • Implementation of different subsystems and components. • Division of Labor • Schedule • Risks • Budget • Questions

3. Project Overview If you cannot measure it, you cannot improve it.

4. Project Overview • Measure the power and energy consumption of an electrical device • Transmit the data to a host (computer)

5. System’s general description AC Unit Communication scheme Host Electrical Device

6. Project Features On the Device: • Real, reactive, and apparent power • LCD Display • Wireless Connection • Device Control • Data Storage

7. Project Features On the Host ( Computer ) • Data Display • Remote Control

8. Time to make it smarter • Device Network • Remote access (Internet) • Autonomous turnoff • Max Power protection • Surge protector

9. Block Diagram Signal Sensor Power Supply LCD Switch Power chip Computer Terminal Wireless RS232 Microcontroller SDRAM FPGA ?

10. Microcontroller TI MSP430 • LCD controller • USART • I/O ports

11. Power/ Energy Measurement Chip • Some chips available • CIRRUS LOGIC: CS5463 • STMicroelectronics: STPM01 • Functions of the chip • Active, reactive, apparent power and RMS values • A/D converter • Less than 0.1% error

12. Power/Energy IC • Max measurements • Isolation • Calibration • Temperature Sensor • Bi-directional Serial interface • Differentiated inputs

13. Memory and Display • LCD Display • Interactive • Character and graphical display • Debug • SDRAM • Cheap and large capacity • SD card reader

14. Wireless Module and Serial Communication • ZigBee • a range of 300ft • 2.4 GHz • built-in antenna • 250kbps Max data rate • The unit will interface with the computer via a USB/ RS 232. • Backup communication • Continuously transmit data periodically

15. Power Management Electrical Isolation 120 Vac LCD Power Supply Transformer 3.3V 5V 3.3V 3.3V 3.3V Transformer Power Measurement chip Micro controller Zigbee module Transformer Load

16. Host(Computer) • Develop GUI using LabView • Start up window (front panel) • Data collection window • Configuration window • Command window • Communicate with hardware devices

17. Data Analysis • Data analysis will be done using Labview programs • Real time plot of Power vs. time • Plot over a given period of time (day, week, month) • Spreadsheet

18. Timeline/Schedule

19. CDR • Assemble Power Measurement Module • Program Microcontroller to send/receive data using RS232. • Program Zigbee module • Preliminary Design of GUI Labview visual

20. Milestone 1 • Program LabView to command Hardware device • Data processing • Testing of preliminary design.

21. Milestone 2 • Integrate hardware and software • Design, schematic and PCB layout • Order main PCB and components • Test and Debug Final Circuit

22. Division of Labor

23. Risks and Contingency Plan • Safety :AC Line • Exercise proper safety precautions at all times • Electrical Isolation • Unfamiliar with Power and Energy Measurement Chip, Microcontroller, Zigbee, LabView. • Use available resources • Books: MSP 430 Microcontroller Basics • Research: online tutorials • TA’s • Time • Develop the product with the basic features • Follow the schedule

24. Budget

25. You can measure it, you can improve it.

26. Questions?