Voice-Activated Television Remote Control (VAR) Senior Design II Mid-Semester Presentation [1]

VAR Team Members Team Leader Electrical 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

Problem and 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 20 th 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 Practical Constraints

System Overview

Technical Constraints NameDescription Power Supply The VAR must operate from a standard 120V wall outlet. Response Time Target 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 CommandsThe VAR will recognize six vocal commands. IR Accuracy The IR signal must be transmitted and received accurately 98% of the time.

Practical Constraints NameDescription Product SizeThe VAR will be no larger than 8” x 8” x 3”. Operating SystemThe 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

Power Jack Power Switch

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 ItemCOM 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 ItemDelete 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 AugustSeptemberOctoberNovember Software Refinement PCB Design PCB Populating Enclosure Testing

References [1] (2012, February 18). “Elderly Couple Watching TV,” in fotosearch. [Online]. Available: [2] F. Hobbs. (2012, January 21). “The Elderly Population,” in U.S. Census Bureau. [Online]. Available: [3] (2012, January 21). “Sixty-Five Plus in the United States,” in U.S. Census Bureau. [Online]. Available: [4] (2012, February 18). “Operating System,” in StatCounter Global Stats. [Online]. Available:

Voice-Activated Television Remote Control (VAR) Senior Design II Mid-Semester Presentation Questions?