Patent ID: 6837516

Claim:
An airbag trigger control system, comprising: a first sensor which is disposed in a predetermined position in a vehicle body and outputs a signal corresponding to an impact exerted to the vehicle body; a trigger control system which triggers an airbag when a parameter determined on the basis of the signal output from the first sensor exceeds a predetermined threshold value; a second sensor which is disposed forward of the first sensor in the vehicle body and outputs a signal corresponding to an impact exerted to the vehicle body; and a threshold value changing device which changes the predetermined threshold value in accordance with the signal output by the second sensor; wherein the second sensor outputs a predetermined signal at predetermined intervals, and the threshold value changing device changes the predetermined threshold value to a given value when the output signal of the second sensor is not detected in a predetermined number of successive control cycles, comprising a change canceling device which cancels a change of the threshold value to the given value when the output signal of the second sensor is detected in a predetermined number of successive control cycles after the threshold value changing device changed the predetermined threshold value to the given value.