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1. Wireless Power
Applications in Bridge Monitoring
Gourav Kumar Pradhan
Dr.MGR University Chennai
Presented by

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

3. 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

4. Hardware Block Diagram

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

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

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

8. Software Block Diagram

9. 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

10. 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

11. Budget
Maker Price
Micro Processor Texas Instruments $40.00
TNC’s TI, Nordic, Lynx $200.00
Temp./Humidity Sensor Sensiron $200.00
Accelerometer Analog Devices $140.00
Antenna Substrate $200.00
PCB- 3 Revs Advanced Circuits $800.00
Printing/Binding Kinko’s $100.00
Misc. Parts $250.00
Total $2030.00

12. Schedule

13. Thank You