| 摘要 |
<p>An inflation controller of an air bag device of the type which inflates an air bag by inflaters, which can judge which operation mode is adequate for the extent of collision and whether or not the inflaters should be actuated. It is provided with a plurality of inflaters for one air bag, and controls the actuation of the inflaters in accordance with the extent of the collision when the device detects that the vehicle comes into collision. A first acceleration sensor (1) is installed in the room of the vehicle and always senses the acceleration (G) at the place of installation. A second acceleration sensor (2) is installed in the front crash zone of the vehicle body and always detects the acceleration (G') at the place of installation. It is judged whether or not the inflaters should be actuated and which actuation mode should be selected, based on the differences of characteristics, in various collision modes, of a first time integral value (V1) which is obtained by integrating the acceleration signal from the sensor (1) with time, a second time integral value (V1') which is obtained by integrating the acceleration signal from the sensor (2) with time, and the difference (Vd) between the first and second time integral values Vd=V'-V, or these values and the amount of change of the difference Gd=d(Vd)/dt by appropriately combining these values.</p> |
