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A vibration powered wireless mote on the Forth Road Bridge
Jia, Yu Yan, Jize Feng, Tao Du, Sijun Fidler, Paul Soga, Kenichi Middleton, Campbell Seshia, Ashwin A.
Jia, Yu
Yan, Jize
Feng, Tao
Du, Sijun
Fidler, Paul
Soga, Kenichi
Middleton, Campbell
Seshia, Ashwin A.
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Publication Date
2015-12-01
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Abstract
The conventional resonant-approaches to scavenge kinetic energy are typically confined to narrow and single-band frequencies. The vibration energy harvester device reported here combines both direct resonance and parametric resonance in order to enhance the power responsiveness towards more efficient harnessing of real-world ambient vibration. A packaged electromagnetic harvester designed to operate in both of these resonant regimes was tested in situ on the Forth Road Bridge. In the field-site, the harvester, with an operational volume of ~126 cm3, was capable of recovering in excess of 1 mW average raw AC power from the traffic-induced vibrations in the lateral bracing structures underneath the bridge deck. The harvester was integrated off-board with a power conditioning circuit and a wireless mote. Duty- cycled wireless transmissions from the vibration-powered mote was successfully sustained by the recovered ambient energy. This limited duration field test provides the initial validation for realising vibration-powered wireless structural health monitoring systems in real world infrastructure, where the vibration profile is both broadband and intermittent.
Citation
Y. Jia, S., et. al. (2015). A vibration powered wireless mote on the Forth Road Bridge. Journal of Physics: Conference Series, 660(1), 012094. DOI: 10.1088/1742-6596/660/1/012094
Publisher
IOP Publishing
Journal
Journal of Physics: Conference Series
Research Unit
DOI
10.1088/1742-6596/660/1/012094
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Article
Language
en
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1742-6596