Abstract: The vehicle collision decision apparatus has first acceleration detectors and a second acceleration detector for detecting an acceleration of the vehicle in a longitudinal direction, and third acceleration detectors for detecting an acceleration of the vehicle in a transverse direction thereof. When the vehicle is involved in an offset collision, the front airbags of the vehicle are activated based on accelerations detected by the first acceleration detectors and the second acceleration detector. Thereafter, the curtain airbags of the vehicle are reliably activated.

Abstract: A collision determining apparatus for a vehicle includes a first acceleration measuring device which measures an acceleration acting on the vehicle, a movement amount calculating device which calculates an amount of movement of an occupant, a change in movement speed calculating device which calculates a change in movement speed of the occupant, a first collision determining threshold value setting device which sets collision determining threshold values for a correlation between the amount of movement of the occupant and the change in movement speed of the occupant, a first collision determining device which determines whether or not the correlation exceeds the collision determining threshold value, and a first control signal generating device which generates a control signal which instructs that an occupant protection apparatus be operated slowly in multiple stages or be operated rapidly in multiple stages.

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: The vehicle collision decision apparatus has first acceleration detectors and a second acceleration detector for detecting an acceleration of the vehicle in a longitudinal direction, and third acceleration detectors for detecting an acceleration of the vehicle in a transverse direction thereof. When the vehicle is involved in an offset collision, the front airbags of the vehicle are activated based on accelerations detected by the first acceleration detectors and the second acceleration detector. Thereafter, the curtain airbags of the vehicle are reliably activated.

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 which measures an acceleration acting on the vehicle, a movement amount calculating device which calculates an amount of movement of an occupant, a change in movement speed calculating device which calculates a change in movement speed of the occupant, a first collision determining threshold value setting device which sets collision determining threshold values for a correlation between the amount of movement of the occupant and the change in movement speed of the occupant, a first collision determining device which determines whether or not the correlation exceeds the collision determining threshold value, and a first control signal generating device which generates a control signal which instructs that an occupant protection apparatus be operated slowly in multiple stages or be operated rapidly in multiple stages.

Abstract: A vehicle collision decision apparatus determines whether or not an occupant-protecting apparatus should be started in a collision by an occupant moving characteristics determining device. Also, whether or not the collision continues is determined in an acceleration change determining section. A determining threshold for a frequency component which indicates damage to the vehicle which is calculated in a frequency component calculating device is selected. The occupant-protecting apparatus is activated appropriately by monitoring the damage to the vehicle in the frequency component determining device by using the frequency component. By doing this, a vehicle collision decision apparatus which can determine the condition in the vehicle collision appropriately is provided.

Abstract: A vehicle collision decision apparatus determines whether or not an occupant-protecting apparatus should be started in a collision by an occupant moving characteristics determining device. Also, whether or not the collision continues is determined in an acceleration change determining section. A determining threshold for a frequency component which indicates a damage to the vehicle which is calculated in a frequency component calculating device is selected. The occupant-protecting apparatus is activated appropriately by monitoring the damage to the vehicle in the frequency component determining device 19 by using the frequency component.