Abstract: A collision determining apparatus for a vehicle includes a vibration detection device that detects a high-frequency vibration of an audio band generated in a vehicle and a low-frequency vibration of the audio band which is lower than the high-frequency vibration; and a collision determining device that determines whether or not a collision requiring an activation of an occupant protection apparatus of the vehicle has occurred based on the detection result of the high-frequency vibration and the low-frequency vibration.

Abstract: An occupant protection control device that performs operation control of a plurality of occupant protection devices provided in a vehicle, the occupant protection control device including a determination section that determines whether or not said vehicle has had a collision, based on acceleration data acquired from a plurality of acceleration sensors installed in predetermined locations of said vehicle, wherein when a side impact collision of said vehicle occurs, a seat belt pretensioner among said plurality of occupant protection devices is inhibited to be operated, and when a frontal oblique impact collision of said vehicle occurs, said seat belt pretensioner is operated after a curtain airbag, among said plurality of occupant protection devices, is operated.

Abstract: A collision determining apparatus for a vehicle includes: a first acceleration measuring device; a second acceleration measuring device; a movement amount calculating device; a change in movement speed calculating device; a first collision determining threshold value setting device which sets a collision determining threshold value for a correlation between the amount of movement of the occupant and the change in movement speed of the occupant based on the acceleration which is measured by the first acceleration measuring device; a first collision determining device which determines whether or not the correlation exceeds the collision determining threshold value; and a control signal generating device which generates a control signal which controls operations of an occupant protection apparatus, in accordance with a result of a determination by the first collision determining device.

Abstract: A collision determining apparatus for a vehicle includes: a first acceleration measuring device; a second acceleration measuring device; a movement amount calculating device; a change in movement speed calculating device; a first collision determining threshold value setting device which sets a collision determining threshold value for a correlation between the amount of movement of the occupant and the change in movement speed of the occupant based on the acceleration which is measured by the first acceleration measuring device; a first collision determining device which determines whether or not the correlation exceeds the collision determining threshold value; and a control signal generating device which generates a control signal which controls operations of an occupant protection apparatus, in accordance with a result of a determination by the first collision determining device.

Abstract: A collision determining apparatus for a vehicle includes: a first acceleration measuring device; a second acceleration measuring device; a first change in movement speed calculating device which calculates a first change in movement speed; an interval integral value calculating device; a second change in movement speed calculating device; a first collision determining device; a continuation determining device; a second collision determining device; a collision determination continuing device which sets a collision continuation determining value to an ON state or OFF state based on the first change in movement speed and the interval integral value; and a control signal generating device which generates a control signal instructing that an occupant protection apparatus be operated based on the collision continuation determining value and the second change in movement speed.