| 摘要 |
Problem to be Solved To provide an airbag device for the body that can instantaneously activate an airbag without malfunctions. Solution When an absolute value of an angular velocity detected by an angular velocity sensor becomes greater than a predetermined angular velocity value, angular velocity values stored in a memory are integrated from a most recent detected value to an oldest value within a predetermined time period, and if an absolute value of a resultant value of integral is greater than a predetermined value and an acceleration detected by an acceleration sensor is smaller than a predetermined acceleration, an airbag 1 is inflated. Therefore, on the basis of the value of integral of the angular velocities, a case in which an angular velocity gradually increases such as actual falling over can accurately be distinguished from a case in which an angular velocity momentarily increases such as another abrupt change in posture, so that the airbag device is extremely effective to prevent malfunctions caused by an action other than falling over. In addition, because it is not necessary to intentionally delay determination so as to prevent malfunctions, the airbag 1 can instantaneously be inflated. |
