Wireless impedance device for electromechanical impedance sensing and low-frequency vibration data acquisition

Stuart G. Taylor; Kevin M. Farinholt; Gyuhae Park; Charles R. Farrar; Eric B. Flynn; David L. Mascarenas; Michael D. Todd

doi:10.1117/12.815534

30 March 2009 Wireless impedance device for electromechanical impedance sensing and low-frequency vibration data acquisition

Stuart G. Taylor, Kevin M. Farinholt, Gyuhae Park, Charles R. Farrar, Eric B. Flynn, David L. Mascarenas, Michael D. Todd

Author Affiliations +

Proceedings Volume 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009; 729228 (2009) https://doi.org/10.1117/12.815534
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

This paper presents recent developments in an extremely compact, wireless impedance sensor node for combined use with both impedance method and low-frequency vibrational data acquisition. The sensor node, referred to as the WID3 (Wireless Impedance Device) integrates several components, including an impedance chip, a microcontroller for local computing, telemetry for wireless data transmission, multiplexers for managing up to seven piezoelectric transducers per node, energy storage mediums, and several triggering options into one package to truly realize a self-contained wireless active-sensor node for SHM applications. Furthermore, we recently extended the capability of this device by implementing low-frequency A/D and D/A converters so that the same device can measure low-frequency vibration data. The WID3 requires less than 60 mW of power to operate and is designed for the mobile-agent based wireless sensing network. The performance of this miniaturized device is compared to our previous results and its capabilities are demonstrated.

Citation Download Citation

Stuart G. Taylor, Kevin M. Farinholt, Gyuhae Park, Charles R. Farrar, Eric B. Flynn, David L. Mascarenas, and Michael D. Todd "Wireless impedance device for electromechanical impedance sensing and low-frequency vibration data acquisition", Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 729228 (30 March 2009); https://doi.org/10.1117/12.815534

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