Development of multi-functional wireless impedance sensor nodes for structural health monitoring

Jiyoung Min; Seunghee Park; Chung-Bang Yun; Byunghun Song

doi:10.1117/12.847458

31 March 2010 Development of multi-functional wireless impedance sensor nodes for structural health monitoring

Jiyoung Min, Seunghee Park, Chung-Bang Yun, Byunghun Song

Proceedings Volume 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010; 764728 (2010) https://doi.org/10.1117/12.847458
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

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.

Citation Download Citation

Jiyoung Min, Seunghee Park, Chung-Bang Yun, and Byunghun Song "Development of multi-functional wireless impedance sensor nodes for structural health monitoring", Proc. SPIE 7647, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2010, 764728 (31 March 2010); https://doi.org/10.1117/12.847458

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