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2010, Volume 5, Issue 2

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Frontiers of Mechanical Engineering >> 2010, Volume 5, Issue 2 doi: 10.1007/s11465-010-0004-2

Impact force detection using an energy flow estimator with piezoelectric sensors

1.Université de Lyon, INSA-Lyon, LGEF EA 682, F-69621, Villeurbanne, France；Department of Physics, Qiannan Normal Collage for Nationalities, Duyun 558000, China; 2.Université de Lyon, INSA-Lyon, LGEF EA 682, F-69621, Villeurbanne, France;

Available online: 2010-06-05
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Abstract

Currently, there are numerous methods for estimating impact locations. One is to find more detailed information because the system becomes complicated. Another method is to reduce energy, for which various autonomic energy harvesting methods have been developed. However, the occupied energy is still small. This paper proposes a simple, rapid, and low-powered impact estimation method based on energy flow direction estimation through a pair of piezoelectric sensors. The estimation energy flow is expressed by a Poynting vector subsequently linked to piezoelectric sensor voltage outputs. The presented approach is verified by numerical simulations and experiments.

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