Home Automation Console Team HAC: Luci Puryear Nidhi Singh Carlos Vasquez Faculty Advisor: Dr. Mitch Thornton Sponsors: Extreme Networks

Overview Project Description Home Automation Console Considerations Technologies Software/Hardware Accomplishments/Problems Test Plan Timeline

Home Automation Home automation is a growing field Many types of automation technologies exist Most of these technologies are independent of each other

Home Automation Console Integration of different home automation technologies Easy to access and use Ethernet capable Consumer Advantages

How the Console Works

Considerations Environmental Economic Human Factors Safety Political

Technologies X-10 Infrared Ethernet

What is x10? Power line carrier (PLC) protocol Allows compatible products to communicate via existing 110V wiring

Why x10? Inexpensive: 3 Modules/Controller for $50 Universally available Flexible: modules exist for a large variety of devices Easy to install: No additional wiring

Alternative: CEBus Noise resistant Higher collision resolution Consumer Electronics Bus Noise resistant Higher collision resolution Faster data transmission Very expensive Limited devices

How x10 works? Transmitter Receiver 110 V 16.66ms Zero crossing points Voltage signal 110 V 16.66ms 60 Hz powerline 1 ms X-10 information window Zero crossing points

X10 Transmission Max. data rate:60 bits/s Binary 1 = 1 ms burst of 3 zero crossing points for 3 phases of AC poweline Max. data rate:60 bits/s Binary 1 = 1 ms burst of 120 kHz at zero crossing point Binary 0 = Absence of burst at zero crossing point

Basic X10 Message Consists of 13 bits Function code or unit code Function bit Consists of 13 bits Error detection: Each data bit is actually sent twice, in complementary form, on alternate half cycles

How are devices controlled using x10? Plug appliance into X10 receiver module Plug the module into electrical outlet. Set the house and unit codes.. Plug controller (transmitter) into any other electrical outlet in your house Set the proper house code.

Infrared Technology Infrared transmitter Console Infrared signals Device with remote Infrared signals Infrared transmitter

Ethernet Program Allow internet remote access to appliances Client/Server model Server supports HTML documents C/C++ and TCP/IP Protocol

Command Control Program (CCP) Home Automation Console X-10 Controller/ IR Transmitter X-10 modules/appliances commands signals

Hardware needed for Implementation Tuxscreen X-10 modules and controller Ethernet card Infrared Transmitter

Tuxscreen Aka Shannon/Philips IS2630 Screen Phone Intel SA 1100 StrongARM CPU 133Mhz 16MB DRAM Sharp Color Touchscreen Infrared Keyboard

Tuxscreen Why use the Tuxscreen? Advantages of having one device dedicated to home automation Memory Expandable Inexpensive $99 Mobile

Linux vs. Inferno Inferno Linux Does not support needed applications like a compiler Difficult to use small size Linux Allows Tuxscreen to run needed program Easy to use Popular small and powerful

X-10 and Ethernet Hardware X-10 modules and controller TW-523 Controller Two Way Interface Module 3-Pin Grounded Appliance Module Lamp Module Ethernet card Trendnet – TE100-PC16 Fast Ethernet Card

Infrared Transmitter Separate from Tuxscreen and connects to serial port Allows console to control devices already equipped with IR Components Used Holtek HT-12E Encoder IC Infrared Diode T1 ¾(NM)

Cost of Prototype Tuxscreen - $99(provided) X-10 modules(provided) Light modules(2) - $12.95 Appliance modules(1) - $12.99 X-10 controller – $23.95(provided) Ethernet Card - $15.00 IR transmitter components - $20.00 Total cost $190.00

Testing Plan: Phase I Basic x-10 commands will be sent to x-10 modules using console. Observations will be recorded using multimeter and oscilloscope x-10 commands will be sent to modules with an extra appliance plugged into house wiring to ensure that this device not harmed All common appliances will be plugged in; all x-10 functions and x-10 modules will be tested for functionality

Testing Plan: Phase II Goal: Gauge console's user friendliness and functionality Tests will be performed by three users of varying computer literacy Users will be provided a checklist of tasks Users will judge clarity and understandability Modifications will be made based on user response

Accomplishments Research Hardware Received Website created Ethernet Program written Command Control Program written Infrared Transmitter designed

Difficulties Tuxscreen Command Control Program

Tuxscreen Initially serial communication could not be established with the Tuxscreen Original operating system could not be backed up Bootloader could not be uploaded

Tuxscreen Attempted to upload bootloader in several ways Unlocked Flash Memory Tried contacting people Tuxscreen#, Message Board, Individuals

Command Control Program Object oriented C++ programming Accepts command inputs from users and sends appropriate signals to the serial port Confirmed using an oscilloscope that program sends correct binary data to serial port, but controller does not perform the command

CCP Pseudocode Example of “turn on module1” command lampMenu( int &M) { //lamp menu if(A==1){ if(status==0) //send lamp on command module.setOn(M); else cout << already on << endl; } else if(A==2) { if(status==1) //send lamp off command module.setOff(M); cout << already off << endl;

References http://www.x10.com http://www.x10.org Sources for images used in the slides: http://www.x10.com http://www.x10.org http://www.smarthome.com

Questions