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CONSERVED ENERGY METRICS FOR FRONTAL IMPACT SENSING ALGORITHM ENHANCEMENT IN MOTOR VEHICLES

  • US 20100004819A1
  • Filed: 07/02/2008
  • Published: 01/07/2010
  • Est. Priority Date: 07/02/2008
  • Status: Active Grant
First Claim
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1. A method of operating a motor vehicle having a deployable occupant protection device comprising:

  • (a) producing a forward crash signal and a central crash signal in response to a crash stimulus, wherein the forward crash signal varies between positive and negative values over time;

    (b) processing the central crash signal with a crash determining algorithm, defining a primary crash metric value;

    (c) converting at least some of the negative values of the forward crash signal to positive values, defining a conditioned crash signal;

    (d) processing the conditioned crash signal with a crash determining algorithm, defining a conserved energy metric value; and

    (e) making a deployment decision for the deployable occupant protection device based on the primary and conserved energy metric values.

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