Crash sensing via piezoelectric sensors
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United States of America Patent
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Apr 20, 2010
Grant Date -
Oct 26, 2006
app pub date -
Jun 24, 2004
filing date -
Jun 25, 2003
priority date (Note) -
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Abstract
A system and method for characterizing piezoelectric sensor responses for automotive vehicle crash analysis, is disclosed. The method employs Daubechies wavelet analysis (1006) to plot signal response amplitudes (1008) in three-dimensional space of at least one piezoelectric sensor. A cluster, signifying a combination of Daubechies amplitudes of the at least one piezoelectric sensor in three-dimensional space, is compared to reference clusters (1010) stored in the automotive vehicle. Based on results from comparing the cluster to the reference clusters, instructions are transmitted to an occupant restraint control system (1013) in the vehicle to deploy a specific airbag at a specific power level.
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