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Health Monitoring of Civil I nfrastructures Using W ireless Sensor Netw orks
Chenyang Lu CSE 520S
- S. Kim, S. Pakzad, D. Culler, J. Dem mel, G. Fenves, S. Glaser,
and M. Turon, Health Monitoring of Civil Infrastructures Using Wireless Sensor Networks, IPSN, April 2007.
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Categories of WSN Applications
Monitoring environments
- Great duck island, Redwood forest
- Focus on low-duty cycle and low power consumption
Monitoring objects – High Fidelity Sampling
- Machine health monitoring, earthquake monitoring,
structural health monitoring
- Focus on fidelity (quality) of sample
Interacting with space and objects
- Lighting control
- Focus on control
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Structural Health Monitoring
Two Damage Detection Approaches: direct (visual inspection, x-ray, etc.) indirect (detecting changes in structural properties/ behavior) Two Major Categories disaster response (earthquake, explosion, etc.) and continuous health monitoring (ambient vibrations, wind, etc.).
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Traditional Approach vs. WSN
cost of equipment is high installation is very expensive due to wiring maintenance is expensive WSN provides the same functionality at a much lower price higher spatial density
- $600 per point compared to thousands of dollars
for a data point in traditional sensor networks
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Major Requirements of WSN
- Sensitive Data Acquisition System
- High-frequency Sam pling w ith Low Jitter
- Time Synchronized Sampling
- FTSP
- Large-scale Multi-hop Network
- MintRoute
- Reliable Command Dissemination
- Flooding
- Reliable Data Collection
- Straw
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