Vehicular collision detection apparatus

A collision detection apparatus for a vehicle, wherein the collision detection apparatus detects collision of an object with the vehicle, the collision detection apparatus comprising:

• a bumper reinforcement that is mounted on the vehicle, the bumper reinforcement extending in a transverse direction of the vehicle;
• a chamber forming member that is provided at a side of the bumper reinforcement, the chamber forming member defining a chamber space that is deformable when the object collides with the vehicle;
• a pressure sensor that detects pressure in the chamber space;
• collision object determining means for determining a category of the object by comparing the pressure detected by the pressure sensor with a predetermined determination threshold value;
• and
• a collision position sensor that detects a position in the vehicle transverse direction, at which position the object collides, wherein the collision object determining means changes the determination threshold value based on the collision position detected by the collision position sensor.