ROLL OVER JUDGING DEVICE

摘要

A roll over judging device comprising a threshold altering function section (5) for altering a judgment threshold based on roll angular speed ?, inclination angle of a vehicle ?v being obtained by integrating roll angle ?, lateral acceleration Gy and steering operation angle ?s, an ?×? map judging section (6) having an ?-? map and judging roll over of the vehicle based on the judgment threshold altered at the threshold altering function section (5) and the inclination angle of the vehicle, a safing function section (7) for detecting tip-up of the vehicle in relation to motion of the vehicle, and a curtain air bag deploying section (9) for controlling deployment of a curtain air bag based on the output from the ?×? map judging section (6) and the output from the safing function section (7).