Vehicle rollover detection
First Claim
1. An apparatus comprising:
- a controller operably coupled to at least one accelerometer sensor that transmits a first acceleration signal, the controller configured to;
determine a lateral acceleration based on the first acceleration signal;
determine a force index based on an amount of force exerted on a wheel;
compare the force index to a threshold force index and the lateral acceleration to a threshold lateral acceleration; and
deploy a restraint based on the comparison of the force index to the threshold force index and the lateral acceleration to the threshold lateral acceleration.
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Abstract
A system and method for detecting a rollover of a vehicle that includes at least one wheel reaction force sensing device for transmitting wheel reaction force signal indicative of an amount of force exerted on at least one wheel of the vehicle is provided. The system includes a controller operably coupled to the at least one wheel reaction force sensing device and including at least one accelerometer sensor for transmitting the acceleration signal. The controller is configured to determine a first force index in response to the wheel reaction force signal, determine a first lateral acceleration of the vehicle in response to the acceleration signal, compare the first force index to a threshold force index and the first lateral acceleration to a threshold lateral acceleration, and deploy a restraint system based on the comparison.
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Citations
20 Claims
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1. An apparatus comprising:
a controller operably coupled to at least one accelerometer sensor that transmits a first acceleration signal, the controller configured to; determine a lateral acceleration based on the first acceleration signal; determine a force index based on an amount of force exerted on a wheel; compare the force index to a threshold force index and the lateral acceleration to a threshold lateral acceleration; and deploy a restraint based on the comparison of the force index to the threshold force index and the lateral acceleration to the threshold lateral acceleration. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle rollover apparatus comprising:
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a controller operably coupled to at least one roll rate sensor that transmits a roll rate signal, the controller configured to; determine a roll rate of a vehicle based on the roll rate signal; determine a force index based on an amount of force exerted on a wheel; compare the roll rate to a threshold roll rate and the force index to a threshold force index; and deploy a restraint based on the comparison of the roll rate to the threshold roll rate and the force index to the threshold force index. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for detecting a rollover of a vehicle, the method comprising:
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receiving a roll rate signal indicative of a roll rate of the vehicle, determining a roll angle based on the roll rate signal; determining a force index based on an amount of force exerted on a wheel; comparing the force index to a threshold force index and the roll angle to a threshold roll angle; and deploying the restraint responsive to the comparison. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification