1. Mid-Semester Presentation Senior Design 2 February 23, 2010

2. Randall Vaughan Sine Wave Generation Layout and Design Apparatus Design Mux Interfacing Caroline Quijano Op-Amp Configuration Layout and Design Apparatus Design Mux Interfacing Zach Jordan Op-Amp Configuration Microcontroller Interfacing Footprints and Schematic Design Jonathan Lynch Sine Wave Generation Website Design Circuit Board Production Schematic Design Electrical EngineeringComputer Engineering Electrical Engineering

3.  Problem  Solution  Constraints TechnicalTechnical PracticalPractical  Progress and Refinements  Future Plan  Testing Plan

4.  Dr. Jack Liu of the Department of Forestry Products requires the use of a portable RF moisture content sensor  Needs a smaller, inexpensive, repackage of his patented prototype

5. The Actual RF Apparatus [1]

6.   Repackage his working prototype by using integrated circuits to replace test-bench equipment.

7. Power Supply Amplifier Microcontroller Waveform Generator Display Transmitting/ Receiving Sensors

8.  Technical Constraints  Practical Constraints

11.  Sensor must withstand debris, electrical noise, and moisture  Sealed, electrically shielded, rugged housing [2]

12.  Isolated high voltages  Appropriate warning labels displayed [3]

15. Oriented Strand Board Capacitive Sensors

17. Voltage Dividers S1 S2 S3 S4 S5 S7 S6

18. Multiplexer System/ Voltage Dividers

19. Signal Generator/Amplifiers

20. Microcontroller/ Mux /Digital Potentiometer

21. Voltage Regulators

23.  Route PCB

24. V Out SENSOR 1 SENSOR 2 SENSOR 3 SENSOR 4 SENSOR 5 SENSOR 6 SENSOR 7 Front Back POWER COM PORT

25.  Populate PCB  Calibrate device

26.  By using Jack Lui’s pre-tested OSB Measuring the specific gravityMeasuring the specific gravity Measuring the moisture contentMeasuring the moisture content

27.  [1] Radio Frequency Evaluation of Oriented Strand Board, by Xiaojian Liu, Starkville MS. [Online]Available: http://chevelle.its.msstate.edu:6777/attach/XiaojianLiuDissertation%20- %20RADIO%20FREQUENCY%20EVALUATION%20OF%20ORIENTED%20STRAND%20BOARD.p df?sid=&mbox=INBOX&charset=escaped_unicode&uid=2012&number=7&filename=XiaojianLi uDissertation%20- %20RADIO%20FREQUENCY%20EVALUATION%20OF%20ORIENTED%20STRAND%20BOARD.p df.  [2] Microsoft Office Online, Clip Art. 2009. http://office.microsoft.com/en- us/clipart/results.aspx?qu=warning&sc=20.  [3] Google Images. 2009. http://albas.id.au/images/temp/Caution%20electrical%20shock%20hazard%20inside%20sign.bmp.  [4] Forestry Facts: Guide for Using the Oven-Dry Method for Determining the Moisture Content of Wood, by R.S Boone and E.M. Wengert, Madison, Wisconsin, 1998. [Online] Available: http://forest.wisc.edu/extension/Publications/89.pdf. http://forest.wisc.edu/extension/Publications/89.pdf.  [5] Wood Products Notes: Methods of Moisture Content Measurement in the Lumber and Furniture Industries, by Phil Mitchell, Raleigh, NC. [Online]Available: http://www.ces.ncsu.edu/nreos/wood/wpn/methods_moisture.htm.  [6] United States of America. Federal Communications Commission. Code of Federal Regulations, Title 47, Part 15. Washington, D.C.: Federal Communications Commission, 2008.  [7] Panel Layup Operations, by Phil Mitchell, Raleigh, NC. [Online] Available: http://www.ces.ncsu.edu/nreos/wood/RMOG/Adobe/Panel.pdf.