Patent ID: 6618656
Filing Date: 2003-09-09
Classification: B60G,B60R

Abstract:
Process for rollover detection for automotive vehicles with safety-related devices wherein, by means of an angular rate signal (&ohgr;x) generated by a gyrosensor (1) in respect of a rotation around the longitudinal axis (X-axis) of the vehicle and by means of an initial position signal (&agr;0) generated by a sensor (2) stating the initial position of the transverse axis of the vehicle, the following process steps are performed:a) calculation of the current inclination angle (&agr;curr,calc) according to âˆ«&ohgr;dt+&agr;start=&agr;curr,calc, with &agr;start=&agr;0â€ƒâ€ƒ(1) b) generating a trigger threshold (S(&ohgr;)) according to S(&ohgr;)=&agr;tipâˆ’k|&ohgr;|,â€ƒâ€ƒ(2) in which &agr;tip corresponds to the static tipping angle of the vehicle and k is a settable vehicle-specific constant which is also a function of the vehicle condition and/or the crash sequence, c) comparison of the value of the absolute amount of the calculated angle of inclination (&agr;curr,calc) with the value of the trigger threshold (S(&ohgr;)), and d) generation of a trigger signal for at least one safety-related device when the trigger threshold (S(&ohgr;)) is exceeded according to |&agr;curr,calc|>S(&ohgr;).