SYSTEM AND METHOD FOR PREDICTING A VEHICLE ROLLOVER
First Claim
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1. A method of predicting a rollover of a vehicle, the method comprising:
- determining a vehicle roll angle indicative of a direction of roll;
determining whether a vehicle impact event has occurred;
selecting a first threshold value based on the roll angle and selecting a second threshold value that is based on motion of the vehicle in the direction of roll;
comparing a first signal indicative of motion of the vehicle to the first threshold value; and
comparing a second signal indicative of kinetic energy of the vehicle to a second threshold value;
wherein a vehicle rollover is predicted when a vehicle impact has not occurred and the first and second signals exceed the first and second threshold values, respectively.
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Abstract
A system and method for predicting a vehicle rollover. A vehicle rollover is predicted when a vehicle impact has not occurred and first and second threshold values indicative of vehicle motion and vehicle kinetic energy are exceeded.
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Citations
20 Claims
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1. A method of predicting a rollover of a vehicle, the method comprising:
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determining a vehicle roll angle indicative of a direction of roll;
determining whether a vehicle impact event has occurred;
selecting a first threshold value based on the roll angle and selecting a second threshold value that is based on motion of the vehicle in the direction of roll;
comparing a first signal indicative of motion of the vehicle to the first threshold value; and
comparing a second signal indicative of kinetic energy of the vehicle to a second threshold value;
wherein a vehicle rollover is predicted when a vehicle impact has not occurred and the first and second signals exceed the first and second threshold values, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of predicting a rollover of a motor vehicle, the vehicle including at least one sensor adapted to detect lateral acceleration and a roll rate of the vehicle, the method comprising:
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determining a first value indicative of a vehicle roll rate and a second value indicative of lateral acceleration of the vehicle;
determining whether the first and second values are within predetermined ranges;
determining a vehicle roll angle based on the first value when the first and second values are not within the predetermined ranges;
selecting a first threshold value based on the vehicle roll angle;
determining whether a vehicle impact event has occurred;
selecting a second threshold value if a vehicle impact has not occurred;
comparing a first signal indicative of motion of the vehicle to the first threshold value; and
comparing a second signal indicative of kinetic energy of the vehicle to a second threshold value;
wherein a rollover is predicted when a vehicle impact has not occurred and the first and second signals exceed the first and second threshold values, respectively. - View Dependent Claims (12, 13, 14, 15)
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16. A system for predicting a roll condition of a motor vehicle, the system comprising:
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a first sensor for generating a roll angle signal;
a second sensor for generating a lateral acceleration signal;
a third sensor for generating a longitudinal acceleration signal;
a controller configured to receive signals from the first, second, and third sensors and control operation of a vehicle safety system, the controller selecting first threshold value based on the roll angle signal and selecting a second threshold value based on the lateral or longitudinal acceleration signals, the controller indicating the roll condition when the lateral and longitudinal acceleration signals do not indicate a vehicle impact and the lateral acceleration signal exceeds the first and second threshold values. - View Dependent Claims (17, 18, 19, 20)
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Specification