Transcript Design Review

ECE 477 Design Review
Team 10  Spring 2012
Paste a photo of team members here,
annotated with names of team members.
Nathan Irvin
Will Bouchonnet
Allen Humphreys
Dan Sabo
Outline
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Project overview
Project-specific success criteria
Block diagram
Component selection rationale
Packaging design
Schematic and theory of operation
PCB layout
Software design/development status
Project completion timeline
Questions / discussion
Project Overview
• The Home Enhancement Suite is a package
that will control various aspects of a room in
an autonomous fashion.
• User recognition through RFID. Individual
user profiles.
• Control Lighting, HDMI-CEC device, and
Electronic door lock
• Wireless RFID readers placed in central
location in room and at external door
Project-Specific Success Criteria
• An ability to detect a user based on RFID and
determine which user has priority, displaying the
user's identity on an LCD.
• An ability to adjust the light intensity to match a
user’s settings through X10 protocol.
• An ability to adjust a television set or other HDMI
device using CEC-HDMI protocol, to a user's
preferred settings. (ON/OFF, Channel, Volume)
• An ability to unlock a door when an appropriate RFID
is present.
• An ability to select/set preferred settings through an
embedded web server and the ability to save the
"light settings" with the press of a button.
Block Diagram
Component Selection Rationale
• Microcontroller
– Microchip - PIC32MX664F064L
• On-chip Ethernet Controller (6/7 Series)
• USB Support (requirement removed)
• Ethernet
– National Semiconductor - DP83848C
• Provided TCP/IP Stack Support
• QFP Availability
Component Selection Rationale
• 12V-5V Regulator
– Texas Instruments - UA78M05CDA
• Output current up to 500 mA
• Convenient SOT-223 package
• 5V-3.3V DC/DC converter
– National Semiconductor - LM3940
• SOT-223 package available with use of
ground plane. (Full load of 1A will never
be required)
Component Selection Rationale
• DC/DC 5V output Boost Converter
– Maxim MAX756
• Full load efficiencies > 87%
• Operates down to .7V
• Optoisolator
– Sharp PC3H712NIP
• Inexpensive, High Collector-Emitter
voltage >12v (Rated at 80V)
Component Selection Rationale
• RFID reader
– ID Innovations ID-12
• Internal antenna
• Simple interface to micro through UART
• Wireless communication
– MaxStream XBee RF Module
• Internal Antenna
• 100’ Range
Component Selection Rationale
• Power Line Interface for X-10
– Micromint Serial Plix
• Only manufacturer
• Interfaces through SPI
Packaging Design
• Two packages
– Controller Package
– RFID reader Package
• Designed to be easy to place and manage
within a room in the house
– Easy to see and access without being an
eyesore or burden to the user
Packaging Design: Controller
• Interfaces with all modified
devices
• Basic UI for user
– Small LCD screen
– Reset Button
– RFID reader
• Contains ports for all
devices
• Light sensor
Packaging Design: RFID Reader
• Contains simple ID-12
RFID reader
• Single cut section
– Accessing AA batteries
• Wireless Transmission
– No cords
– Easily placed anywhere
in the house
Schematic/Theory of Operation
• PIC32MX664F064L
• SPI
• UART
• GPIO
• Ethernet
• X-10 communication via PLIX
• ID-12 RFID Readers
• Xbee Wireless Modules
Power Supply
PIC32
PLIX and Door Lock
Ethernet PHY
Ethernet PHY
Connectors
RFID Reader Module
PCB Layout – Main Board
PCB Layout – Power Supply
PCB Layout - Micro
PCB Layout - Ethernet
PCB Layout - PLIX
PCB Layout – ID-12
PCB Layout – RFID Module
Software Design/Development Status
• Real Time OS
– Run web-based GUI
• Round Robin polling
– Check and service each module
Software Design/Development Status
• Light Sensor
– X10
– Initial calibration for light levels
• HDMI
– CEC protocol
• RFID
– Receive transmissions from reader
– Load user settings
• Valid User
• Priority
• GUI
Project Completion Timeline
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March 7th – All parts available
March 11th- LCD / Debugging set up
March 25th – RFID communication working
March 25th – GUI complete
April 1st – X10 / Door lock working
April 15th – HDMI device interfacing properly
April 20th – User Manual complete
Questions / Discussion