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Proceedings Paper

Development of multi-functional wireless impedance sensor nodes for structural health monitoring
Author(s): Jiyoung Min; Seunghee Park; Chung-Bang Yun; Byunghun Song
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Paper Abstract

This study presents the development of a multi-functional wireless sensor node for the impedance-based SHM. The bottom line is to provide multifunctional wireless sensor nodes for low cost and low power excitation/sensing, structural damage detection/sensor self-diagnosis using embedded algorithms, temperature/power monitoring, and energy scavenging. A miniaturized impedance measuring chip is utilized for low cost and low power structural excitation/selfsensing. Then, structural damage detection/sensor self-diagnosis are executed on the on-board microcontroller. Moreover, it can use the harvested power from solar energy to measure and analyze the impedance data. Simultaneously it can monitor temperature and power consumption. In order to validate the feasibility of this multi-functional wireless impedance sensor node, a series of experimental studies have been carried out for detecting loose bolts and crack damages on a lab-scale steel structure as well as on real steel bridge/building structures. As a result, it has been found that the proposed wireless impedance sensor nodes can be effectively used for local health monitoring of structural components and for constructing a low-cost and low-power but multifunctional SHM system as "place and forget" sensors.

Paper Details

Date Published: 31 March 2010
PDF: 8 pages
Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 764728 (31 March 2010); doi: 10.1117/12.847458
Show Author Affiliations
Jiyoung Min, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Seunghee Park, Sungkyunkwan Univ. (Korea, Republic of)
Chung-Bang Yun, Korea Advanced Institute of Science and Technology (Korea, Republic of)
Byunghun Song, Korea Electronics Technology Institute (Korea, Republic of)


Published in SPIE Proceedings Vol. 7647:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010
Masayoshi Tomizuka, Editor(s)

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