Method and device for recognizing tiredness
First Claim
1. A method for detecting when the driver of a vehicle is tired, the tiredness being determined as a function of a steering inactivity phase and a subsequent steering action, the steering inactivity phase being logically combined with the steering action, comprising:
- sensing a movement of a steering wheel of the vehicle,detecting a steering action that follows the steering inactivity phase,acquiring a magnitude to which the steering action is implemented from a steering wheel angle gradient,determining at least one factor based on at least one steering situation, andevaluating said at least one factor in order to generate an appropriate warning signal.
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Accused Products
Abstract
In a method and in a device for detecting when the driver of a motor vehicle becomes tired, the tiredness is determined as a function of a detected steering inactivity phase and a subsequent steering action. In this context, the steering inactivity phase is logically combined with the steering action, and the logic combination is stored at various times. The logic combination is stored with an assigned weighting factor, and the weighting factor is determined as a function of a classification of a steering situation.
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Citations
22 Claims
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1. A method for detecting when the driver of a vehicle is tired, the tiredness being determined as a function of a steering inactivity phase and a subsequent steering action, the steering inactivity phase being logically combined with the steering action, comprising:
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sensing a movement of a steering wheel of the vehicle, detecting a steering action that follows the steering inactivity phase, acquiring a magnitude to which the steering action is implemented from a steering wheel angle gradient, determining at least one factor based on at least one steering situation, and evaluating said at least one factor in order to generate an appropriate warning signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 20)
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18. A method for detecting when the driver of a vehicle is tired, the tiredness being determined as a function of a steering inactivity phase and a subsequent steering action, the steering inactivity phase being logically combined with the steering action, comprising:
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determining a weighting factor as a function of a classification of a steering situation during which the steering action is executed, and storing the logic combination at various times with an assigned weighting factor, wherein a movement of a steering wheel of the vehicle is sensed in the form of a steering wheel angle, and wherein a steering action that follows the steering inactivity phase is detected and a magnitude of implementation of the steering action is acquired in the form of the maximum gradient of the steering wheel angle that then occurs.
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19. A method for detecting when the driver of a vehicle is tired, the tiredness being determined as a function of a steering inactivity phase and a subsequent steering action, the steering inactivity phase being logically combined with the steering action, comprising:
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determining a weighting factor as a function of a classification of a steering situation during which the steering action is executed, and storing the logic combination at various times with an assigned weighting factor, wherein a steering inactivity phase is detected and a magnitude of implementation of the steering inactivity phase is acquired as a time period during which the steering wheel angle remains within a predetermined steering wheel angle interval, and wherein a steering action that follows the steering inactivity phase is detected and a magnitude of implementation of the steering action is acquired in the form of the maximum gradient of the steering wheel angle that then occurs.
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21. A method for detecting when the driver of a vehicle is tired, the tiredness being determined as a function of a steering inactivity phase and a subsequent steering action, the steering inactivity phase being logically combined with the steering action, comprising:
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determining at least one factor based on at least one steering situation, and evaluating said at least one factor in order to generate an appropriate warning signal, wherein a movement of a steering wheel of the vehicle is sensed in the form of a steering wheel angle, and wherein a steering action that follows the steering inactivity phase is detected and a magnitude of implementation of the steering action is acquired in the form of the maximum gradient of the steering wheel angle that then occurs.
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22. A method for detecting when the driver of a vehicle is tired, the tiredness being determined as a function of a steering inactivity phase and a subsequent steering action, the steering inactivity phase being logically combined with the steering action, comprising:
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determining at least one factor based on at least one steering situation, and evaluating said at least one factor in order to generate an appropriate warning signal, wherein a steering inactivity phase is detected and a magnitude of implementation of the steering inactivity phase is acquired as a time period during which the steering wheel angle remains within a predetermined steering wheel angle interval, and wherein a steering action that follows the steering inactivity phase is detected and a magnitude of implementation of the steering action is acquired in the form of the maximum gradient of the steering wheel angle that then occurs.
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Specification