Wireless Power Applications in Bridge Monitoring September 13, 2007 Presented by RF On

Project Overview Demonstrate the feasibility of wireless power transmission through the example of wireless bridge monitoring sensors.

Goals Wireless power collection Characterization of low power transceivers (TNC’s) Develop at least one sensor type Separate antennas for power and communication Bi-directional serial communication between sensor and base station Communication through 1” of concrete

Hardware Block Diagram

Base Station MSP430 –Low Power –Institutional knowledge TNC –Nordic –TI –Linx Interface to PC –USB  Serial board

Sensors Temperature Humidity Vibration (Accelerometer) Force/Strain Displacement Chemical content (Cl - )

Sensor Board Rectenna Power circuit MSP430 TNC Mother/Daughter board interface

Software Block Diagram

Task Assignments Mr. Sutton –Director of Software Development Mr. Falkenstein –Procurement Director –Director of Antenna Research –CFO Ms. Ditlevson –VP of Documentation Resources Mr. McDougle –Director of Hardware Development –Acting President

Risk Analysis/Mitigation Team skill sets –Weak on software Part availability Sensor packaging Power requirements Leakage from storage element RF propagation in concrete Uncertain of processing power of base station Force majeure

Budget MakerPrice Micro Processor Texas Instruments $40.00 TNC’s TI, Nordic, Lynx $ Temp./Humidity Sensor Sensiron $ Accelerometer Analog Devices $ Antenna Substrate $ PCB- 3 Revs Advanced Circuits $ Printing/Binding Kinko’s $ Misc. Parts $ Total $

Schedule