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

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

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

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

System’s general description Unit Electrical Device Host Communication scheme ACAC

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

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

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

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

Microcontroller TI MSP430 LCD controller USART I/O ports

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

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

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

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

Power Management Power Supply Load 120 Vac Power Measur ement chip 5V 3.3V3.3V LCD Micro controller Zigbee module 3.3V Electrical Isolation Transformer

Host(Computer) Develop GUI using LabView Start up window (front panel) Data collection window Configuration window Command window Communicate with hardware devices Start Configurat ion DataCommand

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

Timeline/Schedule

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

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

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

Division of Labor NameHassan Alabudib Kamal Sabi Marisol Lozano Peng ChenYirui Huang Power Measurement xxx Power Supplyxxx LCD Programmingxxx Wireless Communication xxx RS 232xx MSP430xxx Software Interfacexxx Testingxxxxx Documentationxxxxx

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

Budget Item NameQuantityPrice Power and Energy Measurement IC 4$50 MSP 430 Microcontroller4$30 SD Card2$ 18 LCD2$80 Zigbee Module3$69 PCB3$ 100 Electronic components$100 Miscellaneous$200 Total$ 647

You can measure it, you can improve it.

Questions?