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

2. VAR Team Members Team Leader Electrical Engineer Design Hardware PIC programming Computer Engineer Website Voice Recognition Coding PIC programming Computer Engineer Website Voice Recognition Coding PIC programming Adviser: Dr. Pan Li Electrical Engineer Hardware Research PIC Programming Debugging Melissa Webb David Trosclair Bobby Britton Bader Yaseen

3. Outline Problem Solution Constraints Technical Practical Approach Progress Timeline Questions

4. Problem and Solution

5. 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].

6. 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 On- Power Off - Volume Up- Volume Down - Channel Up- Channel Down

7. 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

8. Technical and Practical Constraints

9. 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.

10. System Overview

11. 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

12. 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.

13. Approach

14. Voice Recognition Software Microsoft Speech API (C#) Supported by Microsoft OS Free Library Easy to use

15. Wireless Technology What is important to the design: Supported by Microsoft OS Convenience Point to Point Connection

16. Wireless Technology Name Range (ft) Bandwidth (Mbps) Convenience Point to Point Choice IEEE 802.15.4 [5] 2500.25NoYes Bluetooth [6] 3281Yes Wi-Fi30054YesNo

17. Wireless Technology NameRange (ft) Bandwidth (Mbps) ConvenienceChoice IEEE 802.15.4 [5] 2500.25No Bluetooth [6]3281Yes Wi-Fi30054Yes Name Range (ft) Bandwidth (Mbps) Convenience Point to Point Choice IEEE 802.15.4 [5] 2500.25NoYes Bluetooth [6] 3281Yes Wi-Fi30054YesNo

18. Bluetooth Module Name Range (ft) Operating Voltage (V) Price ($)Choice BlueSMiRF Gold [7] 350 3.3 – 6 64.95 Roving Networks (RN-41) [8] 3303.359.95 BlueSMiRF Silver [9]603.3 – 639.95

19. Name Range (ft) Operating Voltage (V) Price ($)Choice BlueSMiRF Gold [7] 350 3.3 – 6 64.95 Roving Networks (RN-41) [8] 3303.359.95 BlueSMiRF Silver [9]603.3 – 639.95 Bluetooth Module

20. Need serial interface & general purpose I/O pins PIC24HJ32GP202 [10] Low Cost Team Experience Supports Library Microprocessor [11]

21. IR Transmitter High-Output Infrared LED [12] [13]

22. Progress and Timeline

23. Progress: Voice Recognition “Listen”

24. Progress: Voice Recognition “Volume Down”

25. Progress: Voice Recognition Voice commands implemented

26. Progress: IR Receiver

27. 38KHz Infrared Receiver Module

28. Progress: IR Receiver 4.7 K ohms Resistor

29. Progress: IR Receiver LED

30. Progress: IR Receiver

31. Command 1 st code2 nd code Power on0000011010001000001001011101 Power off0000011 010001000001001011101 Volume up0000001010001000001101011101 Volume down0000101010001000000101011101 Channel up0000100010001000000111011101 Channel down0000010010001000001011011101 10000100000001000000111111101 20000010 00001011111101 30000110000001000000011111101 40000001000001000001101111101 500001010000010 1111101 60000011000001000001001111101 70000111000001000000001111101 80000000100001000001110111101 90000100100001000000110111101 00000010100001000001010111101 Space-Width encoding

32. Progress: IR Receiver Command 1 st code2 nd code Power on0000011010001000001001011101 Power off0000011 010001000001001011101 Volume up0000001010001000001101011101 Volume down0000101010001000000101011101 Channel up0000100010001000000111011101 Channel down0000010010001000001011011101 10000100000001000000111111101 20000010 00001011111101 30000110000001000000011111101 40000001000001000001101111101 500001010000010 1111101 60000011000001000001001111101 70000111000001000000001111101 80000000100001000001110111101 90000100100001000000110111101 00000010100001000001010111101 Space-Width encoding

33. Progress: IR Transmitter High-Output IR LED

34. Progress: IR Transmitter Resistors

35. Progress: IR Transmitter NPN Transistor

36. Progress: IR Transmitter

37. Progress: Breadboard On/Off Switch

38. Progress: Breadboard 3.3V Voltage Regulator

39. Progress: Breadboard Status LEDs

40. Progress: Breadboard BlueSMiRF Silver Bluetooth Receiver

41. Progress: Breadboard PIC24HJ32GP202

42. Progress: Breadboard IR Transmitter

43. JanuaryFebruaryMarchApril Research Design Parts Coding Troubleshooting & Debugging Working Prototype Timeline

44. References [1] (2012, February 18). “Elderly Couple Watching TV,” in fotosearch. [Online]. Available: http://www.fotosearch.com/photos-images/television-programme.htmlhttp://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.htmlhttp://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.htmlhttp://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-barhttp://gs.statcounter.com/#os-ww-monthly-201202-201202-bar [5] (2012, February 18). “Home Networking with Zigbee,” in EE Times. [Online]. Available: http://www.eetimes.com/design/embedded/4006430/Home-networking-with-Zigbee [6] (2012, February 18). “Bluetooth Range,” in BluetoothRange. [Online]. Available: http://www.bluetoothrange.org/ [7] (2012, February 18 ). “Bluetooth Modem- BlueSMiRF Gold” in Sparkfun Electronics. [Online]. Available: http://www.sparkfun.com/products/10268 [8] (2012, February 18). “Bluetooth Module Breakout-Roving Network,” in Sparkfun Electronics. [Online]. Available: http://www.sparkfun.com/products/10559 http://www.sparkfun.com/products/10559 [9] (2012, February 18). “Bluetooth Modem- BlueSMiRF Silver,” in Sparkfun Electronics. [Online]. Available: http://www.sparkfun.com/products/10269 [10 ] (2012, February 20). “PIC24,” in Microchip. [Online]. Available: http://www.microchip.com/ParamChartSearch/chart.aspx?branchID=8186&mid=14&lang=en&pageId=75 [11] (2012, February 20). “PIC24,” in Ictradent. [Online]. Available: http://www.ictradenet.com/Vendor/Microchip_Technology/Index18.htm [12] (2012, February 25). “IR LED,” in Radio Shack. [Online]. Available: http://www.radioshack.com/product/index.jsp?productId=2062565 [13] (2012, February 25). “Transistor LED Drive Circuit,” in TX-IR Infrared Transmitter. [Online]. Available: https://docs.google.com/a/msstate.edu/viewer

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