Activation device for passenger protection apparatus

An activation device for a passenger protection apparatus which is made to activate said passenger protection apparatus in accordance with a behavior of a vehicle, comprising:

• roll detecting means for detecting a rotation of said vehicle in its right-hand and left-hand directions;
• roll judging means for making a judgment on a roll of said vehicle on the basis of a result of the detection by said roll detecting means;
• drive control means for activating said passenger protection apparatus when said roll judging means makes a judgment indicating the occurrence of a roll of said vehicle;
• and
• trip-over type discriminating means for making a discrimination of a possibility of the occurrence of a trip-over type roll,
• said roll judging means making a judgment indicating the occurrence of a roll of said vehicle at an earlier timing than normal when said trip-over type discriminating means discriminates a high possibility of the occurrence of the trip-over type roll.

An activation device for a passenger protection apparatus which is made to activate said passenger protection apparatus in accordance with a behavior of a vehicle, comprising:

• roll judging means for detecting the behavior of said vehicle to make a judgment indicating the occurrence of a roll of said vehicle when the vehicle behavior detected satisfies a predetermined condition;
• drive control means for activating said passenger protection apparatus when said roll judging means makes a judgment indicating the occurrence of a roll of said vehicle;
• a plurality of acceleration sensors for detecting accelerations of said vehicle in its right-hand and left-hand directions;
• collision state discriminating means for making a discrimination of a collision state of said vehicle on the basis of each of the accelerations detected by said plurality of acceleration sensors;
• and
• threshold switching means for setting said predetermined condition for the judgment on a roll of said vehicle in accordance with the collision state discriminated by said collision state discriminating means.

An activation device for a passenger protection apparatus which is made to activate said passenger protection apparatus in accordance with a behavior of a vehicle, comprising:

• roll judging means for detecting the behavior of said vehicle to make a judgment indicating the occurrence of a roll of said vehicle when the vehicle behavior detected satisfies a predetermined condition;
• drive control means for activating said passenger protection apparatus when said roll judging means makes a judgment indicating the occurrence of a roll of said vehicle;
• and
• trip-over type discriminating means for making a discrimination of a possibility of the occurrence of a trip-over type roll,
• said roll judging means making a judgment indicating the occurrence of a roll of the vehicle at an earlier timing than normal when said trip-over type discriminating means makes a discrimination of a high possibility of the occurrence of a trip-over type roll.