Impact event countermeasure control method and system for automotive vehicle
First Claim
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1. An impact event countermeasure control method for an automotive vehicle, comprising the steps of:
- sensing deceleration of the vehicle during an impact event;
setting a countermeasure deployment timer in the event that said sensed deceleration exceeds a first threshold;
integrating said sensed deceleration to calculate the time-based displacement of an occupant within said vehicle;
comparing the calculated displacement of said occupant with a displacement threshold at the time said countermeasure deployment timer expires; and
in the event that said calculated displacement is less than said displacement threshold when said countermeasure deployment timer expires, delaying deployment of a countermeasure until said displacement threshold is crossed.
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Abstract
An impact event countermeasure control method and system for an automotive vehicle includes management of impact countermeasures using not only variable timing responsive to impact severity, but also event control as a function of the displacement of a vehicle'"'"'s occupant with respect to the passenger cabin environment, including various countermeasure devices.
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Citations
17 Claims
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1. An impact event countermeasure control method for an automotive vehicle, comprising the steps of:
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sensing deceleration of the vehicle during an impact event; setting a countermeasure deployment timer in the event that said sensed deceleration exceeds a first threshold; integrating said sensed deceleration to calculate the time-based displacement of an occupant within said vehicle; comparing the calculated displacement of said occupant with a displacement threshold at the time said countermeasure deployment timer expires; and in the event that said calculated displacement is less than said displacement threshold when said countermeasure deployment timer expires, delaying deployment of a countermeasure until said displacement threshold is crossed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An impact event countermeasure control system for an automotive vehicle, comprising:
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a sensor for determining the deceleration of the vehicle during an impact event; a countermeasure deployment timer which is set in the event that the determined deceleration exceeds a first threshold; an integrator using said sensed deceleration to calculate the time-based displacement of an occupant within said vehicle; a comparator for comparing the calculated displacement of said occupant with a displacement threshold at the time said countermeasure deployment timer expires; and a controller, comprising said countermeasure deployment timer, said integrator, and said comparator, with said controller deploying an impact countermeasure in the event that said calculated displacement is greater than said displacement threshold when said countermeasure timer expires. - View Dependent Claims (13, 14, 15, 16, 17)
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Specification