Patent ID: 7925395

Claim:
A rollover judging device comprising: an angular velocity sensor for measuring an angular velocity component of a vehicle in a direction of a rollover of the vehicle; an acceleration sensor for measuring either of at least an acceleration component of the vehicle in a rightward or leftward direction and an acceleration component of the vehicle in an upward or downward direction; an integration processor for adjusting a magnitude of the angular velocity component measured by said angular velocity sensor on a basis of the acceleration component measured by said acceleration sensor, and for calculating an angle component by integrating with respect to time said adjusted angular velocity component; and a judging unit for multiplying the angular velocity component measured by said angular velocity sensor and the angle component calculated by said integration processor by preset weighting factors, respectively, and for outputting a signal indicating judgment of occurrence of a rollover when an absolute value of a sum of said components multiplied by the preset weighting factors, respectively, exceeds a preset threshold.