Control device, and method for controlling protective device

A control apparatus of a passenger protection apparatus, comprising:

• a first acceleration detection part for location at a front of a vehicle to detect a first acceleration in a longitudinal direction of the vehicle;
• a second acceleration detection part for location at a center of the vehicle to detect a second acceleration in the longitudinal direction of the vehicle and a third acceleration in a width direction of the vehicle;
• and
• a control part for determining a front face collision based on the first and second accelerations detected by the first acceleration detection part and the second acceleration detection part, respectively to activate the passenger protection apparatus,
• wherein the control part comprises;
• a speed calculation part for integrating the first and second accelerations to obtain a speed (ΔV);
• a level calculation part for calculating a level of a front face collision based on the first acceleration and the second acceleration;
• a ΔVoffset calculation part for making an offset adjustment of ΔV obtained by integrating the third acceleration so as to attenuate ΔV of the third acceleration based on a head-on collision, in order to obtain ΔVoffset;
• and
• a first determination part for determining a presence of an offset collision or diagonal collision based on the level of the front face collision and the ΔVoffset;
• wherein the control part activates the passenger protection apparatus for protecting a side and head of a passenger including a side airbag and a curtain airbag, if it is determined using the first determination part that an offset collision or diagonal collision has occurred.