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Method and apparatus for sensing a vehicle crash in real time using a frequency domain integration and summation algorithm

  • US 5,036,467 A
  • Filed: 04/04/1990
  • Issued: 07/30/1991
  • Est. Priority Date: 04/04/1990
  • Status: Expired due to Term
First Claim
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1. An apparatus for controlling actuation of a passenger restraint system in a vehicle, said apparatus comprising:

  • sensing means for providing a time domain vibratory electric signal having frequency components indicative of a vehicle crash condition;

    means for transforming the time domain vibratory electric signal over at least two time intervals into associated frequency domain signals;

    means for integrating each of the frequency domain signals;

    means for summing the integrals of the frequency domain signals; and

    means for actuating the passenger restraint system when the sum of the integrals of the frequency domain signals indicates a predetermined type of vehicle crash is occurring.

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