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iHome Automation System

Home Automation SystemTeam: Million Dollar Contingency Regiment

Adam DoehlingChris ManningRyan Patterson

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Updated Overview:• The goal of this project is to develop a home

automation system that gives the user complete control over all remotely controllable aspects of his or her home.

• The automation system will have the ability to be controlled from a central host PC, the Internet, and also remotely accessed via a Pocket PC with a Windows Mobile based application.

• We do not have any ‘tangible’ test results to present in this presentation, but we will demonstrate some software we have developed.

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iHome Automation Overall Flowchart (Review)

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Hardware Description-Base Station

Base Station

L1 Nodes

USB

Base Station Block

Diagram

RS-485 Wireless

iHome Control Center

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Base

• Attaches to PC, interfaces between software and hardware.

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Hardware Description-Level 1 Nodes

• Controls L0 nodes, replaces light switch, has simple user interface.

MCU

TI MSP430F149

Touch Sensors

RS-485 Transceiver

1 Mb Flash

LCD Display

8-bit Parallel BusSPI Bus

DigitalPotentiometer

RS

-485 Bus

Quadrature Encoders

PW

M

Level 1 Node

L1 Node

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L1 MCU

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L1 comm

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L1 sensor

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L1 touch

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USB programmer

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Hardware Description-Level 0 Nodes

• Basic ‘cells,’ controlled by level 1 nodes. Mainly On/Off/Sensor functionality. Since L0 nodes are so varying in what kinds of functions they carry out, it is impossible to block diagram every variety, since they all contain different hardware. Generically, however, they look like this:

Sensor/Switch

Level 1 Node

Level 0 Node

Level 0 Block Diagram See next slide for comprehensive

list of interface connections

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L1 Device Interface

• Eight TTL Output Ports (5V)

• Four TTL Input Ports (5V)

• Three Analog Input Ports (3.3V)

• Four PWM Output Port (5V, resolution of 33,300)

• 127 Channel I2C Port (3.6V)

• Two SPI Ports (3.6V, 1mbps)

• One digital quadrature encoder input (5V)

All L0 Nodes connect to the system via L1 nodes using the following L1 ports:

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Hardware Description-Level 2 Nodes

• Controls audio communications, no user interface

MCU

Atmel AT91SAM7S256 (ARM7TDMI Core)

RJ45 Connector

MP3/WAV Encoder/Decoder

VLSI1003

512kbyte SRAM Buffer

CY62148BLL

Ethernet

Realtek 8019AS

RCA/Stereo Mini Connector (30 Ω) Stereo Mini Connector2x22W Speaker Output (4Ω)

8-bit Parallel Addressed Bus

8-bit parallel bus with latched/ translated address bus

SPI

Line InStereo Output

L2 Block Diagram

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L2 mcu

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L2 ether

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L2 audio

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L2 power

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Hardware Description-Level 3 Nodes

• Level 3 node portion of the project has been cancelled due to unexpected budget cuts.

• Level 3 nodes were intended for streaming video between the central server, TVs, and video cameras. This would require expensive hardware that is now not able to be purchased or developed.

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Software Overview Recall:• There are three main software applications in this

project: The iHome Control Center, the Remote Control Center, and the Webserver

Remote Control Center

iHome Control Center

Webserver

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Software: iHome Control Center Block Diagram

iHome

Control

Center

User Input (via GUI):

Command

Map

New Node

Timed Event

Low Level Node ‘Pairing’

Output(Webserver DLL):

Command for L2 Node (direct user call or Timed system call)

Low Level Node ‘Pairing’ firmware adjustment

Low Level Node Command

Web Server

BasestationInformation Request

(From Web Server)

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Software: Web Server Block Diagram

Web Server

Input(from iHome CC)

Command

Node addition or pairing

Output(via Windows Messaging):

Information Request

Information (nodes, rooms)

Command Confirmation

iHome

Control

Center

(from remote CC)

Command

Info request

(from web user)

Command

Timed Command

Command Confirmation

(via TCP/IP Wireless comm)

Remote

Control

Center

Command Confirmation

(via http comm)

Web User

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Software: Remote Control Center Block Diagram

Remote

Control

Center

User Input (via GUI):

Command

Information Request

Output(via TCP/IP wireless comm.):

Command

Information Request

(node, state, rooms)

Confirmation of Instruction

Web Server

GUI

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Or, Generally:

Web Server

Remote

Control

Center

Web User

iHome

Control

Center

Nodes

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Progress made this semester: -What has been done?

• Hardware − Design of L0 device for dimming incandescent

light bulbs− Partial Design for wireless USB base station− USB L0 device programmer completed

• Firmware/Software− Ability to do firmware upgrades of L1 Nodes

remotely implemented− GUI of iHome Control Center− Webserver interface with iHome control center− User interface for webserver− GUI for Pocket PC application

• Miscellaneous: − Construction of roomish structure started

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Updated Objectives for This Semester

-What needs to be done?

• Hardware − Design a wired & wireless USB Base Station− L0 nodes for physical control of systems− Completion of construction of higher-order

nodes

• Firmware/Software− Completion of GUI and code for both the central

server (iHome Control Center) and the remote user (Pocket PC) interface

− Completion of firmware for the L1 – L2 nodes− Completion of all firmware for the Base Station− Webserver for both remote access and L2 node

communication

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Updated Division of Labor-Who is doing what?

• Adam- completion of web server, and L0 node completion, and completion of L2 node design / programming.

• Chris- user interface for Pocket PC, completion of various peripheral hardware.

• Ryan- completion of the iHome Control Center, and completion of L0 nodes, L1 nodes, and USB Base Station.

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Updated Schedule-When will everything be

done?

• Milestone 1- − Schematics for Base station, wireless

adapters for L1 nodes, and light dimmer L0 node completed; PCB layout underway.

− Remote firmware update ability implemented.

− Communications handler for iHome Control Center completed

− Remote Control Center basically functional − TCP/IP communications for L2 nodes

completed− Framing of roomish structure completed

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Updated Schedule-When will everything be

done?

• Milestone 2-−All circuit boards assembled and tested−Device pairing finished and scheduler

underway for iHome Control Center−Roomish structure sheetrocked,

mudded, and texturized−Remote Control Center completed − L2 Nodes completed− L1 Nodes installed in roomish structure

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Updated Schedule-When will everything be

done?

• Expo- −Webserver finished− L1 Nodes successfully controlling

lights and outlets−Roomish structure painted−Users Manual completed−All software completed−Adam, Ryan and Chris’ software

communicating seamlessly with one another

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