This paper presents recent developments in an extremely compact, wireless impedance sensor node for use in structural health monitoring (SHM). The sensor node uses a low-cost integrated circuit that can measure and record the electric impedance of a piezoelectric active-sensor. The sensor node also integrates several components, including 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 including a wireless triggering circuit into one package to truly realize a comprehensive, self-contained wireless active-sensor node for SHM applications. It is estimated that this sensor node requires less than 75 mW of total power to operate measurement, computation and data transmission. In addition, the sensor node can also be used for the active-sensor self-diagnostic process that can monitor the operational condition of piezoelectric transducers used in SHM applications. The performance of this miniaturized and portable device is compared to our previous results and its broader capabilities are demonstrated.
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ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems
October 28–30, 2008
Ellicott City, Maryland, USA
Conference Sponsors:
- Aerospace Division
ISBN:
978-0-7918-4332-1
PROCEEDINGS PAPER
Recent Advances in Impedance-Based Wireless Sensor Nodes Available to Purchase
Kevin M. Farinholt,
Kevin M. Farinholt
Los Alamos National Laboratory, Los Alamos, NM
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Stuart G. Taylor,
Stuart G. Taylor
Los Alamos National Laboratory, Los Alamos, NM
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Timothy G. Overly,
Timothy G. Overly
Los Alamos National Laboratory, Los Alamos, NM
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Gyuhae Park,
Gyuhae Park
Los Alamos National Laboratory, Los Alamos, NM
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Charles R. Farrar
Charles R. Farrar
Los Alamos National Laboratory, Los Alamos, NM
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Kevin M. Farinholt
Los Alamos National Laboratory, Los Alamos, NM
Stuart G. Taylor
Los Alamos National Laboratory, Los Alamos, NM
Timothy G. Overly
Los Alamos National Laboratory, Los Alamos, NM
Gyuhae Park
Los Alamos National Laboratory, Los Alamos, NM
Charles R. Farrar
Los Alamos National Laboratory, Los Alamos, NM
Paper No:
SMASIS2008-386, pp. 57-65; 9 pages
Published Online:
July 13, 2009
Citation
Farinholt, KM, Taylor, SG, Overly, TG, Park, G, & Farrar, CR. "Recent Advances in Impedance-Based Wireless Sensor Nodes." Proceedings of the ASME 2008 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. Smart Materials, Adaptive Structures and Intelligent Systems, Volume 2. Ellicott City, Maryland, USA. October 28–30, 2008. pp. 57-65. ASME. https://doi.org/10.1115/SMASIS2008-386
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