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Rollover Judgment Apparatus

  • US 20080114509A1
  • Filed: 12/27/2005
  • Published: 05/15/2008
  • Est. Priority Date: 04/01/2005
  • Status: Active Grant
First Claim
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1. A rollover judgment apparatus for judging whether or not a vehicle will roll over by comparing each of an output of a roll angular velocity sensor and an output of either or both of a lateral direction acceleration sensor and a steering wheel angle sensor with a threshold, said device comprising:

  • a threshold change functional unit for changing the determination threshold on a basis of a roll angular velocity, a tilt angle of the vehicle which is acquired by integrating the roll angular velocity, and either or both of a lateral direction acceleration and a steering wheel angle;

    a rollover judging means for judging whether or not the vehicle will roll over on a basis of the determination threshold changed by said threshold change functional unit, and said tilt angle of the vehicle;

    a safing functional unit for detecting a tip-up of the vehicle in relation to a motion of the vehicle; and

    a curtain air bag deploying unit for controlling expansion of a curtain air bag on a basis of an output of said rollover judging means and an output of said safing functional unit.

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