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Method for the detection of an impact

  • US 7,295,909 B2
  • Filed: 02/26/2003
  • Issued: 11/13/2007
  • Est. Priority Date: 09/19/2002
  • Status: Expired due to Term
First Claim
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1. A method for detecting a collision as a function of at least one of a pressure signal and a temperature signal representing an adiabatic change of state, comprising:

  • performing a first comparison of the at least one of the pressure signal and the temperature signal with at least a first threshold;

    performing on the at least one of the pressure signal and the temperature signal a low pass filtration before the first comparison;

    deriving a variable from the at least one of the pressure signal and the temperature signal;

    performing at least one second comparison of the variable with at least one second threshold;

    detecting the collision as a function of the first comparison and the at least one second comparison; and

    adjusting a sensitivity of the detection, by adjusting at least one of the first threshold and the at least one second threshold, in accordance with the first comparison in that the at least one second comparison is performed only after an amount of the first threshold is exceeded.

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