Occupant restraint system and occupant restraint method

摘要

An occupant restraint system comprises a seat belt tension application device; a longitudinal acceleration detector; a lateral acceleration detector; and a control device that controls the tension applied by the seat belt tension application device based upon a longitudinal acceleration detection value and a lateral acceleration detection value and the control device engages the seat belt tension application device to apply the tension to the seat belt if a point on the map determined in conformance to the longitudinal acceleration detection value and the lateral acceleration detection value obtained as the vehicle decelerates is outside a range enclosed by the operation decision-making threshold line and the other axis.