| 摘要 |
A control system for an apparatus for protecting a head portion of a vehicle occupant includes: an air bag device (10) having an air bag body (16) for protecting a head portion of a vehicle occupant which air bag body inflates and unfolds between the head portion of the vehicle occupant and a side portion of a vehicle; a pretensioner (15) which, upon operation, takes up slack of a seat belt fastened to the vehicle occupant; a roll angular velocity sensor (13) for detecting a roll rate of the vehicle in order to determine a roll state of the vehicle; and a control circuit (17) which, when a determined roll state is a predetermined roll state, controls operation of the air bag device (10) and operation of the pretensioner (15) such that the pretensioner is operated before operation of the air bag device. Accordingly, a space for unfolding the air bag body (16) of the air bag device is ensured. <IMAGE> |
