Home Utility Management System

E-POWER

Who is E-Power?

• Tony Galecki– Computer Engineer

• Wesley Baker – Computer Engineer

• Vinh Huynh– Electrical Engineer

• Brian Frederick– Electrical Engineer

• Sergio Espinoza– Electrical Engineer

• Ben Walpole– Electrical Engineer

Have You Asked Yourself?

• Why is my electricity bill so high?

• Why do we keep having rolling blackouts?

• Is SDGE ripping me off?

E-POWER HAS THE ANSWER

Why E-POWER?

• Utilities companies are behind with construction of power facilities to serve peak demand

• Increased power consumption means rolling blackouts

• 96% of people surveyed said they would use a home power monitoring system to conserve power

E-Power Home Utility Management System

• Measure power consumption of an appliance• Display power consumption cost over time• Simple user interface via internet• Connect/disconnect option for each device• Assist in reducing peak power demand

E-Power Home Utility Management System

How does it work?

Easy as 1-2-3ish

1. Turn on central hub/web server

2. Plug appliance into wall unit

3. Log onto personalized web page

4. Enjoy your new found power

Tell Me More!!

Overall System Comprised of Three Subsystems

Outlet SensingUnit

Central Hub/Web Server Computer

Outlet Sensor Data

Wireless Communication Usage InformationVia Internet

· Outlet Current Sensing Unit· Wireless Data Transmission· Data Processing on embedded web server

Outlet Current Sensing

Outlet Current Sensing Simplified Block Diagram

Hall Effect

Sensor

Zigbee Transceiver

Amplifier

Relay

µcontroller

Device

Power Supply

Hall Effect SensorSensor Output

Sensor Amplification

Power Supply

Gain Resistor

Vout

Vin -

Vin +

Amplifier Output

Sampling amplifier output for peak value

• Low-Power high speed µC

• 10 bit A/D converter

A/D Converter in A/D Converter out

A/D Converter

Data Transmission

Zigbee 802.15.4

• Compatibility• Auto configuration• Mesh network• Low Power• Security

Device 2 Device 3

Controller

Device 1

Zigbee Home Network Overview

Data Processing and Output

Embedded Server

• Real time operating system

• Internet accessible• Process and store

data• Output data to a

dynamic web application

Data Processing Flow Diagram

Incoming Node Data

Check Address to Determine Node

Output to Web Application Upon User Request

Store in Database for Processsing

User Interface

User Interface

Budget

• Total cost to date $232.04

• Total amount available $17.96

• Main Allocations1. Web Server $99.002. Zigbee $9.953. µcontroller $5.17

CostSurplus

Management System Summary

• Measure power consumption of an appliance

• Display power consumption cost over time

• Simple user interface via internet

• Connect/disconnect option for each device

• Change your power consumption behavior

How Can I Get One?

• Base Package System Includes– 1 Main Hub and 3 Outlet Units $250.00– Each Additional Outlet $50.00

Special pricing for Mother’s Day!

Save an additional 15%

Questions?