30 March 2009 Wireless sensor self-diagnosis for piezoelectric actuating/sensing networks
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Economic and reliable online health monitoring strategies are very essential for safe operation of civil, mechanical and aerospace structures. Furthermore, a PZT sensor self-diagnostic and validation procedure is quite important issue for successful impedance-based SHM system's implementation. This study presents online sensor self-diagnosis technique over structural health monitoring (SHM) strategies using wireless impedance sensor nodes. The wireless impedance sensor node incorporating a miniaturized impedance measuring chip, a microcontroller, and a radio-frequency (RF) telemetry is equipped with the capabilities for temperature-sensing, multiplexing of several sensors, and local data analysis. A temperature effects-free sensor self-diagnosis algorithm is embedded into the sensor node and its feasibility is examined from the experiments monitoring the integrity of each piezoelectric sensor on a wireless sensor network.
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Seunghee Park, Seunghee Park, Sun-Kyu Park, Sun-Kyu Park, Hyun-Ho Shin, Hyun-Ho Shin, Chung-Bang Yun, Chung-Bang Yun, } "Wireless sensor self-diagnosis for piezoelectric actuating/sensing networks", Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72920B (30 March 2009); doi: 10.1117/12.815466; https://doi.org/10.1117/12.815466

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