Collision detection apparatus

A collision detection apparatus comprising:

• an acceleration acquisition processing unit for acquiring an acceleration sensor output;
• a duration calculation unit for calculating a duration from a time at which an acquired acceleration passes a preset, predetermined value to a time at which the acceleration passes the predetermined value again;
• and
• a collision determination processing unit for performing a collision determination by comparing the acceleration acquired by the acceleration acquisition processing unit with a threshold,
• wherein the collision determination processing unit corrects a sensitivity of the collision determination by modifying the threshold in accordance with the duration calculated by the duration calculation unit, and also performs the collision determination by comparing a maximum value or a minimum value of the acceleration sensor output throughout the duration with the modified threshold.

A collision detection apparatus comprising:

• an acceleration acquisition processing unit for acquiring an acceleration sensor output;
• a duration calculation unit for calculating a duration from a time at which an acquired acceleration passes a preset, predetermined value to a time at which the acceleration passes the predetermined value again;
• and
• a collision determination processing unit for performing a collision determination based on the acceleration acquired by the acceleration acquisition processing unit and a preset threshold,
• wherein the collision determination processing unit has a gain correction coefficient for performing a multiplication with the acceleration acquired by the acceleration acquisition processing, corrects a sensitivity of the collision determination by modifying the gain correction coefficient in accordance with the duration calculated by the duration calculation unit, and also performs the collision determination by comparing a value, obtained by multiplying a maximum value or a minimum value of the acceleration sensor output throughout the duration by the gain correction coefficient, with the preset threshold.