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Method for discriminating long-period, low-velocity crashes

  • US 5,490,066 A
  • Filed: 04/27/1992
  • Issued: 02/06/1996
  • Est. Priority Date: 04/27/1992
  • Status: Expired due to Fees
First Claim
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1. A method of vehicle crash discrimination for controlling actuation of a vehicle passenger restraint device comprising the steps of:

  • receiving vehicle acceleration information from at least one acceleration sensor;

    determining a value indicative of vehicle velocity based on said received vehicle acceleration information;

    comparing said value indicative of vehicle velocity to a first predetermined threshold value;

    determining a value indicative of increasing or decreasing vehicle acceleration based on said received acceleration information with respect to time if said value indicative of vehicle velocity exceeds said first predetermined threshold value;

    comparing said value indicative of increasing or decreasing vehicle acceleration to a second predetermined threshold value, said second predetermined threshold value being a positive value; and

    actuating said vehicle passenger restraint device if said value indicative of increasing or decreasing vehicle acceleration exceeds said second predetermined threshold value, wherein said first predetermined threshold value is equal to approximately half the velocity of a maximum allowable vehicle crash in which actuation of said vehicle passenger restraint device is not desired.

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