System for activating passenger-protecting device mounted on automotive vehicle
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United States of America Patent
Stats
-
Nov 14, 2006
Grant Date -
Feb 12, 2004
app pub date -
Jul 9, 2003
filing date -
Jul 15, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Angular velocity in a rolling action of a vehicle is detected by an angular velocity sensor, and a difference between two angular velocities detected in a short time interval is calculated. The calculated angular velocity difference is compared with a predetermined threshold value. If the angular velocity difference is larger than the threshold value, a passenger-protecting device is activated. A rolling angle of the vehicle may be calculated by integrating the detected angular velocity, and a combination of the rolling angle and the angular velocity may be compared with a predetermined threshold. If the combination exceeds the threshold, it is determined that the vehicle is rolling over and the passenger-protecting device is activated.
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