A self-powered wireless sensor node for structural health monitoring

Dao Zhou; Na Kong; Dong Sam Ha; Daniel J. Inman

doi:10.1117/12.847334

9 April 2010 A self-powered wireless sensor node for structural health monitoring

Dao Zhou, Na Kong, Dong Sam Ha, Daniel J. Inman

Proceedings Volume 7650, Health Monitoring of Structural and Biological Systems 2010; 765010 (2010) https://doi.org/10.1117/12.847334
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2010, San Diego, California, United States

Abstract

We developed a self-powered wireless autonomous Structural Health Monitoring (SHM) sensor node using a Texas Instruments MSP430 evaluation board. The sensor node employs a PZT (Lead Zirconate Titanate) based impedance method, which saves power by eliminating a digital-to-analog-converter (DAC) for generation of an excitation signal and an analog-to-digital converter (ADC) for sensing the response. The sensor node wakes up at a predetermined interval, performs an SHM operation, and reports the result to the host computer wirelessly. The sensor node consumes only 0.3 J and is powered up by the energy harvested from vibrations, often available from infrastructures. The power management circuit integrated with a piezoelectric cantilever with the size of 50 mm x 31.8 mm generate up to 2.9 mW under 0.5g (rms) base acceleration, which is sufficient to run an SHM operation on every two minutes.

Citation Download Citation

Dao Zhou, Na Kong, Dong Sam Ha, and Daniel J. Inman "A self-powered wireless sensor node for structural health monitoring", Proc. SPIE 7650, Health Monitoring of Structural and Biological Systems 2010, 765010 (9 April 2010); https://doi.org/10.1117/12.847334

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