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Supplemental restraint deployment method using dynamic crash classification

  • US 7,424,354 B2
  • Filed: 10/05/2004
  • Issued: 09/09/2008
  • Est. Priority Date: 10/05/2004
  • Status: Active Grant
First Claim
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1. A method of deploying a supplemental restraint based on multiple distributed measures of vehicle acceleration, the method comprising the steps of:

  • defining a plurality of crash types characterized by different relationships among the distributed measures of vehicle acceleration;

    establishing calibrated severity thresholds for each of said crash types;

    developing a measure of crash severity from the measures of vehicle acceleration; and

    enabling deployment of said restraint when the measure of crash severity exceeds the selected severity threshold;

    said method further comprising, for a crash event;

    determining a first crash type based upon the distributed measures of vehicle acceleration and the definitions of crash type,setting a first severity threshold based upon the first crash type;

    continuously monitoring said measures of acceleration during the course of the crash event, anddynamically reclassifying the crash event to a second crash type based upon changes in the distributed measures; and

    setting a second severity threshold based upon the second crash type.

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