Rollover prediction and warning method
First Claim
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1. A system for determining a rollover property of a vehicle, comprising:
- (a) a lateral acceleration sensor capable of sensing a lateral acceleration of the vehicle and outputting a lateral acceleration signal;
(b) a first speed sensor capable of sensing a first left tire rotational speed and outputting a first left tire speed signal;
(c) a second speed sensor capable of sensing a first right tire rotational speed and outputting a first right tire speed signal;
(d) a mass sensor for sensing a mass property and outputting a mass property signal; and
(e) a processing unit for receiving the lateral acceleration signal, the first left tire speed signal, the first right tire speed signal, and the mass property signal, and for using the lateral acceleration signal, the first left tire speed signal, the first right tire speed signal, and the mass property signal to determine the rollover property of the vehicle.
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Abstract
A system for determining a rollover property of a vehicle includes sensors capable of sensing lateral acceleration, a first left tire rotational speed, a first right tire rotational speed, and a mass property. The sensors output a lateral acceleration signal, a first left tire rotational speed signal, a first right tire rotational speed signal, and a mass property signal. A processing unit receives the signals and uses the received signals to determine a rollover property of the vehicle.
59 Citations
28 Claims
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1. A system for determining a rollover property of a vehicle, comprising:
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(a) a lateral acceleration sensor capable of sensing a lateral acceleration of the vehicle and outputting a lateral acceleration signal; (b) a first speed sensor capable of sensing a first left tire rotational speed and outputting a first left tire speed signal; (c) a second speed sensor capable of sensing a first right tire rotational speed and outputting a first right tire speed signal; (d) a mass sensor for sensing a mass property and outputting a mass property signal; and (e) a processing unit for receiving the lateral acceleration signal, the first left tire speed signal, the first right tire speed signal, and the mass property signal, and for using the lateral acceleration signal, the first left tire speed signal, the first right tire speed signal, and the mass property signal to determine the rollover property of the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A system for determining a rollover property of a vehicle, comprising:
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(a) a steering sensor capable of sensing a vehicle turn radius and outputting a steering signal; (b) a first speed sensor capable of sensing a first left tire rotational speed and outputting a first left tire speed signal; (c) a second speed sensor capable of sensing a first right tire rotational speed and outputting a first right tire speed signal; (d) a mass sensor capable of sensing a mass property and outputting a mass signal; and (e) a processor for receiving the steering signal, the first left tire speed signal, the first right tire speed signal, and the mass signal, and using the steering signal, the first left tire speed signal, the first right tire speed signal, and the mass signal to determine the rollover property of the vehicle. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for determining a rollover property of a vehicle, comprising:
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(a) detecting rotational wheel speed for a left wheel and a right wheel of the vehicle, said right wheel being opposite said left wheel; (b) determining a mass property; (c) determining a change in a load applied to said left wheel and said right wheel from changes in the rotational wheel speed of said left wheel and said right wheel; (d) calculating a load transfer from the mass property and the change in load applied to said left wheel and said right wheel; (e) calculating a load transfer ratio; and (f) predicting the status of a rollover condition based on a comparison of the calculated load transfer ratio to a threshold load transfer ratio. - View Dependent Claims (24, 25, 26, 27)
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28. A method for determining a rollover property of a vehicle, comprising:
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(a) detecting rotational wheel speed for a plurality of left wheels and a plurality of right wheels of the vehicle; (b) determining a mass property; (c) determining a change in a load applied to said plurality of left wheels and said plurality of right wheels according to changes in the rotational wheel speed of said plurality of left wheels and said plurality of right wheels; (d) calculating a load transfer from the mass property and the change in load applied to said plurality of left wheels and said plurality of right wheels; (e) calculating a load transfer ratio; and (f) predicting the status of a rollover condition based on a comparison of the calculated load transfer ratio to a threshold load transfer ratio.
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Specification