Final Report April 16, 2006 Windows Student Embedded ChallengE

1. 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 Final Report April 16, 2006 Windows Student Embedded ChallengE

2. Purpose Statement e house byGT Earth, Georgia Institute of Technology • 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. Design Goals e house byGT Earth, Georgia Institute of Technology • 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. System Overview e house byGT Earth, Georgia Institute of Technology

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

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

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

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

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

11. Control Algorithms e house byGT Earth, Georgia Institute of Technology • 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. Temperature Control e house byGT Earth, Georgia Institute of Technology Start 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 • 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

13. Project Development e house byGT Earth, Georgia Institute of Technology • 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. Testing Methodology e house byGT Earth, Georgia Institute of Technology

15. Features under Construction e house byGT Earth, Georgia Institute of Technology • 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. Market Analysis e house byGT Earth, Georgia Institute of Technology • 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. Energy Saving Studies e house byGT Earth, Georgia Institute of Technology • 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. Potential Ideas e house byGT Earth, Georgia Institute of Technology • 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. Questions? Ayan Vikram David Final Report April 16, 2006 Windows Student Embedded ChallengE