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Method and arrangement for detecting a vehicle roll-over

  • US 6,141,604 A
  • Filed: 04/16/1999
  • Issued: 10/31/2000
  • Est. Priority Date: 03/11/1996
  • Status: Expired due to Term
First Claim
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1. A method for detecting a rollover of a vehicle, comprising the steps of:

  • measuring a first acceleration value of the vehicle in a first direction of a yaw axis using a first acceleration sensor;

    measuring a second acceleration value of the vehicle in a second direction of a roll axis using a second acceleration sensor;

    measuring a third acceleration value of the vehicle in a third direction of a pitch axis using a third acceleration sensor;

    determining a first acceleration vector as a function of the first, second and third acceleration values;

    determining a value of an angular offset of the first acceleration vector from a second acceleration vector of gravity when the vehicle is in a rest position;

    if the angular offset value is greater than a limit value, signaling the rollover; and

    measuring an angular velocity of the vehicle with respect to the roll axis using at least one rotation rate sensor;

    wherein the angular velocity and the limit value are inversely related.

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