Rollover determination system and method
First Claim
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1. A rollover determination system comprising:
- a first roll rate sensor that detects a first roll rate of a vehicle;
a second roll rate sensor that detects a second roll rate of the vehicle;
a lateral acceleration sensor that detects a lateral acceleration of the vehicle in a lateral direction of the vehicle; and
a controller that makes a determination whether there is a possibility of rollover of the vehicle on the basis of at least one of the first roll rate detected by the first roll rate sensor and the second roll rate detected by the second roll rate sensor together with the lateral acceleration detected by the lateral acceleration sensor, wherein the first roll rate sensor and the second roll rate sensor are arranged to detect a rotational angular velocity about a longitudinal axis of the vehicle.
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Abstract
A rollover determination system 20 includes a first roll rate sensor 22, a lateral G-sensor 26, and a main rollover determination unit 30. The first roll rate sensor 22 detects roll rate of a vehicle. The lateral G-sensor 26 detects acceleration in the lateral direction of the vehicle. The main rollover determination unit 30 determines a possibility of rollover of the vehicle based on roll rate RR and lateral acceleration Gy. A safing determination unit 70 for confirming an occurrence of rollover is additionally incorporated in the main rollover determination unit 30.
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Citations
12 Claims
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1. A rollover determination system comprising:
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a first roll rate sensor that detects a first roll rate of a vehicle;
a second roll rate sensor that detects a second roll rate of the vehicle;
a lateral acceleration sensor that detects a lateral acceleration of the vehicle in a lateral direction of the vehicle; and
a controller that makes a determination whether there is a possibility of rollover of the vehicle on the basis of at least one of the first roll rate detected by the first roll rate sensor and the second roll rate detected by the second roll rate sensor together with the lateral acceleration detected by the lateral acceleration sensor, wherein the first roll rate sensor and the second roll rate sensor are arranged to detect a rotational angular velocity about a longitudinal axis of the vehicle. - View Dependent Claims (2, 3, 4)
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5. A rollover determination system according to claim 5,
wherein the controller makes, in parallel to the first determination, a second determination whether there is a possibility of rollover of the vehicle on the basis of the first roll rate and the second roll rate.
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7. A method of determining a rollover comprising the steps of:
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detecting a first roll rate of a vehicle, detecting a second roll rate of the vehicle;
detecting a lateral acceleration of the vehicle in a lateral direction of the vehicle, and determining whether there is a possibility of rollover of the vehicle on the basis of at least one of the first roll rate and the second roll rate together with the lateral acceleration, wherein the first and second roll rates are detected by measuring a rotational angular velocity about a longitudinal axis of the vehicle. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification