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Proceedings Paper

Wireless structural health monitoring for critical members of civil infrastructures using piezoelectric active sensors
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Paper Abstract

This paper presents several challenging issues on wireless structural health monitoring techniques for critical members of civil infrastructures using piezoelectric active sensors. The basic concept of the techniques is to monitor remotely the structural integrity by observing the impedance variations at the piezoelectric active sensors distributed to critical members of a host structure. An active sensing node incorporating on-board microprocessor and radio frequency telemetry is introduced in a sense of tailoring wireless sensing technology to the impedance method. A data compression algorithm using principal component analysis is embedded into the on-board chip of the active sensing node. The data compression algorithm would promote efficiency in terms of both power management and noise elimination of the active sensor node. Finally, a piezoelectric sensor self-diagnosis issue is touched introducing a new impedance model equation that incorporates the effects of sensor and bonding defects.

Paper Details

Date Published: 10 April 2008
PDF: 10 pages
Proc. SPIE 6935, Health Monitoring of Structural and Biological Systems 2008, 69350I (10 April 2008); doi: 10.1117/12.784990
Show Author Affiliations
Seunghee Park, Korea Advanced Institute of Science and Technology (South Korea)
Chung-Bang Yun, Korea Advanced Institute of Science and Technology (South Korea)
Daniel J. Inman, Virginia Polytechnic Institute and State Univ. (United States)
Gyuhae Park, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 6935:
Health Monitoring of Structural and Biological Systems 2008
Tribikram Kundu, Editor(s)

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