1. Final Report April 16, 2006 Windows Student Embedded ChallengE Team: GT Earth Georgia Institute of Technology Ayan Kishore David Liu Vikram Sivakumar Faculty Advisor Dr. James O. Hamblen Special Thanks to… Herman Wong Windows Embedded Student ChallengE 2006

2. by GT Earth, Georgia Institute of Technology e house Purpose Statement Problem: Energy extraction Solutions: Alternate energy sources Energy consumption reduction Reduce household energy consumption Our solution: Home automation system aimed to save energy Source: US Department of Energy, Annual Energy Review 2004

3. by GT Earth, Georgia Institute of Technology e house Design Goals Save Energy Intelligent heating, cooling and lighting control Electricity bill log Convenience Manual switching Humidex-based control Remote Control Audio-visual weather alert Feature-intensive GUI

4. by GT Earth, Georgia Institute of Technology e house System Overview

5. by GT Earth, Georgia Institute of Technology e house System Components

6. by GT Earth, Georgia Institute of Technology e house System Components Home Automation Unit X10 transceiver with serial interface X10 nodes attached to devices

7. by GT Earth, Georgia Institute of Technology e house System Components In-house Central Unit eBox II Vortex86 processor running Windows CE Supports USB, Serial, Parallel and Ethernet interfaces Sensor Gives temperature and relative humidity readings Parallel Port Interface developed

8. by GT Earth, Georgia Institute of Technology e house System Components Mobile Control Unit Any.NET Compact Framework compliant device TCP/IP support Internet Access

9. by GT Earth, Georgia Institute of Technology e house System Setup

10. by GT Earth, Georgia Institute of Technology e house User Interface

11. by GT Earth, Georgia Institute of Technology e house Control Algorithms Lighting Control Sky based Lighting Control Uses outdoor light levels to dim/brighten indoor lighting Temperature Control Humidex based Control Includes humidity for real feel temperature Adaptive Night Control Reduces heating/cooling at night Future-Aware Control Uses internet weather forecasts for predictive control Humidity Control Keeps relative humidity at safe levels to prevent mold growth.

12. by GT Earth, Georgia Institute of Technology e house Temperature Control Start  Get local weather from XML feed (Tn, Hn, Tnn, Hnn)  Get room weather from sensor (Ts and Hs)  Get preferred weather (Tp & Hp) from user  Humidex based Control Tp = HI(Tp, Hp) Tn = HI(Tn, Hn) Ts = HI(Ts, Hs) Tnn = HI(Tnn, Hnn)  Adaptive Night Control 2am – 4am : Tp = Tp + 2 4am – 6am : Tp = Tp + 4 6am – 8am : Tp = Tp + 3  Future-aware Control Tp = Tp + (Tnn - Tp)/2 Calculate the difference parameters ΔTps = Tp - Ts ΔTpn = Tp – Tn ΔTns = | Ts – Tn | Device Activation/Deactivation  If ΔTps and ΔTpn are both negative Set AC On Set Heater Off  If ΔTps and ΔTpn are both positive Set AC Off Set Heater On  If ΔTps is positive and ΔTpn is negative Set AC Off  If ΔTns > 6.5 Set Heater On else, Set Heater Off  If ΔTps is negative and ΔTpn is positive Set Heater Off  If ΔTns > 6.5 Set AC On else, Set AC Off

13. by GT Earth, Georgia Institute of Technology e house Project Development Split into multi-person stages over a 4 month period Fast development Windows CE Immediate change visibility in Windows XP Sufficient external classes for.NET compact framework Platform Builder GUI development using Visual Studio 2005

14. by GT Earth, Georgia Institute of Technology e house Testing Methodology DeviceTest Procedure SensorsMonitored traffic with a logic analyzer and console output XML ParserDeveloped a GUI wrapper to view parsed information X10 TransceiverControlled one lamp with a simple GUI on the eBox PDATransmitted/received text data over a TCP IP connection Integrated eHouse system Extended individual to multiple features (Test and Fix) Enumerated test conditions Ran system for 2 weeks to check for stability Compared e-house features enabled and disabled to check for saving performance

15. by GT Earth, Georgia Institute of Technology e house Features under Construction Secure Remote Access Encrypted password protected remote access Electricity bill prediction Live estimation of electricity bill based on user settings Home Security Randomized lighting patterns to discourage burglars Brownout/Blackout Response User configured or preset reduced utilization modes

16. by GT Earth, Georgia Institute of Technology e house Market Analysis Costs $240 (ebox + sensor + X10 transceiver) Add-on system ($8 per device node) Smart lighting control Smart temperature control Monitor electricity bill to prevent extra expenditure Prevent moulding Replace weather warning radios ($75) Remote Control of devices Better user experience

17. by GT Earth, Georgia Institute of Technology e house Energy Saving Studies Monthly energy saving of at least 9.75% Annual monetary savings of $120 for small households For implementation in every US home 129 billion kWh savings $11.5 billion savings

18. by GT Earth, Georgia Institute of Technology e house Potential Ideas Zwave and Zigbee based home automation systems Better look and feel of hardware (touch screen) Interface to more devices Corporate Edition for commercial buildings Incorporation into a popular embedded computer (Xbox) Incorporation remote access into a web service (Windows Live)

19. Final Report April 16, 2006 Windows Student Embedded ChallengE Questions? VikramDavidAyan