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Voice-Activated Television Remote Control (VAR)
Senior Design II
Mid-Semester Presentation
[1]
VAR Team MembersTeam LeaderElectrical Engineer
• Hardware• PCB Design• PCB Components• Packaging
Computer Engineer
• Website•PIC programming• Voice Recognition testing
Computer Engineer
• Website• GUI Creator• PIC programming• Voice Recognition Testing
Adviser: Dr. Pan Li
Electrical Engineer
• Hardware • PCB Design• PCB Components• Packaging
Melissa Webb
David Trosclair
Bobby Britton
Bader Yaseen
Outline
• Problem• Solution• Constraints
• Technical• Practical
• Hardware• Software• Questions
Problemand
Solution
Problem
Some people do not have the ability to operate a standard hand-held television remote control.
Our market is the elderly and/or disabled.
“During the 20th century, the number of people in the United States aged 65 or over increased by a factor of 11, growing from 3 million to 33 million” [2, 3].
Solution
The VAR will allow users to operate their television by using voice commands.
By speaking into a microphone, the user is able to control 6 functions of the television:
- Power - Mute
- Volume Up - Volume Down
- Channel Up - Channel Down
What is the VAR?
• The user will speak the commands into a microphone attached to a computer with our voice recognition software.
• The software will translate and wirelessly send the signal to the VAR.
• A microprocessor will convert from the wireless input to an IR signal and output to the television.
VAR
Technical and PracticalConstraints
System Overview
Technical Constraints
Name Description
Power SupplyThe VAR must operate from a standard 120V wall outlet.
Response TimeTarget time for complete process is less than two seconds.
Transmission Distance
The wireless signal and the IR signal’s maximum distances are 15 feet.
Voice Commands The VAR will recognize six vocal commands.
IR AccuracyThe IR signal must be transmitted and received accurately 98% of the time.
Practical Constraints
Name Description
Product Size The VAR will be no larger than 8” x 8” x 3”.
Operating System The VAR will be Windows OS compatible.
Practical Constraints Manufacturability: Product Size
The VAR will be no larger than 8’’ x 8’’ x 3’’.
• Convenient for user
• Easily fits into any space
• Portable
• Comparable to devices such as modems and routers
Practical Constraints Manufacturability: Operating System
The VAR software will be Windows OS compatible.
• Microsoft Windows is one of the most commonly used operating systems for personal computers [4].
• Executable files of the program can easily be made.
Hardware
PCB Schematic
PCB Layout
Front
Back
PCB Layout
Front
Back
Power Jack
PCB Layout
Front
Back
Power Switch
PCB Layout
Front
Back
IR LEDs
PCB Layout
Front
Back
Voltage Regulator
PCB Layout
Front
Back
PIC24
PCB Layout
Front
Back
Bluetooth
PCB Layout
Front
Back
PIC Kit
PCB Layout
Front
Back
Extra Holes
Testing: Footprints
Back
Back
Power Jack
Power Switch
Front
Front
IR LEDs
To Do
• Order the PCB
• Order the packaging
• Populate the board
• Test the hardware constraints
Software
Reminisce: Previous Voice Recognition Software
Current Voice Recognition Software
Alteration of Keyword
Previous Keyword: “Listen” Current Keyword: “Attention”
VAR GUI Operations
COM Port Menu Item COM Port Selection
VAR GUI Operations
New Feature: Channel Customization
• Customize up to 7 channels
• Add Channels
• Delete Channels
• Error Detection strictly enforced when attempting to authorize a new channel
• Channel authorization success grants local integration of that channel to VAR’s customized dictionary
Add / Delete Channel Menu Items
Add Channel Menu Item Delete Channel Menu Item
Add Channel Operation
Add Custom 1 Slot after Add Channel Operation
Delete Custom 1 Slot after Add Channel Operation
Delete Channel Operation
Error Detection: Inadequate Information
Error Detection: Channel Name Already Assigned
Error Detection: Channel Number Already Assigned
Error Detection: Invalid Channel Name
Error Detection: Invalid Channel Number
Channel Customization Integration to VAR GUI
To Do
• Test / Verify Voice Recognition Accuracy • Test / Verify Error Detection
• Verify that executable is stable with other PCs
Timeline
August September October November
Software Refinement
PCB Design
PCB Populating
Enclosure
Testing
References
[1] (2012, February 18). “Elderly Couple Watching TV,” in fotosearch. [Online]. Available: http://www.fotosearch.com/photos-images/television-programme.html
[2] F. Hobbs. (2012, January 21). “The Elderly Population,” in U.S. Census Bureau. [Online]. Available: http://www.census.gov/population/www/pop-profile/elderpop.html
[3] (2012, January 21). “Sixty-Five Plus in the United States,” in U.S. Census Bureau. [Online]. Available: http://www.census.gov/population/socdemo/statbriefs/agebrief.html
[4] (2012, February 18). “Operating System,” in StatCounter Global Stats. [Online]. Available: http://gs.statcounter.com/#os-ww-monthly-201202-201202-bar
Voice-Activated Television Remote Control (VAR)
Senior Design IIMid-Semester Presentation
Questions?