iHome Automation System
Home Automation System
Team: Million Dollar Contingency Regiment
Adam Doehling
Chris Manning
Ryan 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 Security & Automation System
iHome Automation Overall Flowchart (Review)
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Hardware Description-Base Station
iHome
Control
Center
USB
Base Station
RS-485
Wireless
L1 Nodes
Base Station
Block Diagram
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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.
Level 1 Node
RS-485 Bus
Quadrature
Encoders
L1 Node
RS-485 Transceiver
8-bit Parallel Bus
MCU
TI MSP430F149
SPI Bus
PWM
1 Mb Flash
Touch Sensors
LCD Display
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Digital
Potentiometer
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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:
Level 0 Block
Level 1 Node
Diagram
See next slide for comprehensive
list of interface connections
Level 0 Node
Sensor/Switch
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L1 Device Interface
All L0 Nodes connect to the system via L1 nodes
using the following L1 ports:
• 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)
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Hardware Description-Level 2 Nodes
• Controls audio communications, no user
interface
RCA/Stereo Mini Connector (30 Ω)
Stereo
Output
2x22W Speaker Output (4Ω)
Stereo Mini Connector
Line In
MP3/WAV Encoder/Decoder
VLSI1003
SPI
8-bit Parallel
Addressed Bus
MCU
8-bit parallel bus with latched/
translated address bus
Atmel AT91SAM7S256 (ARM7TDMI
Core)
Ethernet
512kbyte SRAM Buffer
Realtek 8019AS
CY62148BLL
L2 Block Diagram
RJ45 Connector
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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
Webserver
Remote Control Center
iHome Control Center
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Software:
iHome Control Center Block Diagram
Output
User Input
(via GUI):
Command
(Webserver
DLL):
iHome
Map
New Node
Low Level Node
‘Pairing’
Timed Event
Control
Center
Command for
L2 Node (direct
user call or
Timed system
call)
Low Level Node
‘Pairing’
firmware
adjustment
(From Web Server)
Information
Request
Low Level Node
Command
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Web Server
Basestation
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Software:
Web Server Block Diagram
iHome
Output
Input
(from iHome CC)
Command
Node addition or
pairing
(from remote CC)
Web Server
Information
Request
Command
Confirmation
(via TCP/IP Wireless comm)
Information
(nodes, rooms)
Command
Info request
(from web user)
Command
Confirmation
Center
Remote
Control
Center
(via http comm)
Command
Timed Command
Control
(via Windows
Messaging):
Command
Confirmation
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Web User
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Software:
Remote Control Center Block Diagram
Output
User Input
(via GUI):
Command
Information
Request
(via TCP/IP wireless
comm.):
Remote
Control
Command
Information
Request
Web Server
(node, state,
rooms)
Center
Confirmation of
Instruction
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GUI
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Or, Generally:
Nodes
iHome
Web Server
Control
Center
Remote
Control
Web User
Center
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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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