Land vehicles – Wheeled – Attachment
Patent
1998-07-01
2000-03-14
Rice, Kenneth R.
Land vehicles
Wheeled
Attachment
701 45, B60R 2132
Patent
active
060362251
ABSTRACT:
An apparatus for controlling an actuatable occupant restraint device for a vehicle, the restraining device having a plurality of actuatable stages (24, 26), the apparatus including a crash sensor (14, 16) for sensing crash acceleration and providing a crash acceleration signal indicative thereof. A controller (22) includes an integrator (72, 172) for determining a velocity value from the crash acceleration signal and for providing a velocity signal (74, 174). The controller (22) is coupled to the actuatable device for (i) effecting actuation of a first of the actuatable stages (24) when the determined velocity value exceeds a first threshold value, and (ii) upon the determined velocity value exceeding a second threshold value, determining a crash severity index (112, 212) having a value related to a time interval from when the determined velocity value (74, 174) exceeds the first threshold value (88, 188) to when the determined velocity value exceeds the second threshold value (96, 196). The controller effects actuation of a second of the actuatable stages (26) in response to the crash severity index value (112, 212).
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Copy of Great Britain Search Report.
Foo Chek-Peng
Jia Shiyi
Martin Scott Andrew William
Sumner Paul Leo
Wright Timothy Chester
Rice Kenneth R.
TRW Inc.
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