Method and device for driver state detection
First Claim
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1. A method for detecting a state of a driver, the method comprising:
- recording a curve over time of a signal of at least one vehicle characteristic;
determining whether the recorded curve meets at least one predetermined criterion; and
responsive to determining in the determining step that the at least one predetermined criterion is met by the recorded curve, generating a signal which shows the driver state as being inattentive;
wherein the inattentive driver state is determined, and the generation of the signal showing the inattentive state is performed, responsive to detecting in the determining step at least one of;
a sudden increase of a steering angle change after a phase of slight change;
a temporal correspondence between driver performance of a steering correction and at least one of an actual lane departure and a threatened lane departure; and
occurrence of driver performance of a steering correction at a predetermined frequency, each of the steering corrections including a sudden increase in at least one of steering angle and steering angle change.
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Abstract
A method and a device for detecting the state of a driver are described. In the process, the curve of a signal which characterizes the state of the driver is evaluated, and a signal indicating the state of the driver is generated in response to a typical curve.
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Citations
12 Claims
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1. A method for detecting a state of a driver, the method comprising:
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recording a curve over time of a signal of at least one vehicle characteristic; determining whether the recorded curve meets at least one predetermined criterion; and responsive to determining in the determining step that the at least one predetermined criterion is met by the recorded curve, generating a signal which shows the driver state as being inattentive; wherein the inattentive driver state is determined, and the generation of the signal showing the inattentive state is performed, responsive to detecting in the determining step at least one of; a sudden increase of a steering angle change after a phase of slight change; a temporal correspondence between driver performance of a steering correction and at least one of an actual lane departure and a threatened lane departure; and occurrence of driver performance of a steering correction at a predetermined frequency, each of the steering corrections including a sudden increase in at least one of steering angle and steering angle change. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for detecting a state of a driver, comprising:
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a computer unit configured to; evaluate whether a recorded curve over time of a signal of at least one vehicle characteristic meets at least one predetermined criterion; and responsive to the evaluation being that the at least one predetermined criterion is met by the recorded curve, generate a signal identifying the driver state as being inattentive; wherein the inattentive driver state is determined, and the generation of the signal showing the inattentive state is performed, responsive to the evaluation including detection of at least one of; a sudden increase of a steering angle change after a phase of slight change; a temporal correspondence between driver performance of a steering correction and at least one of an actual lane departure and a threatened lane departure; and occurrence of driver performance of a steering correction at a predetermined frequency, each of the steering corrections including a sudden increase in at least one of steering angle and steering angle change.
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9. A method for detecting a state of a driver, the method comprising:
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for each of at least two vehicle characteristics, obtaining a respective set of signals over time; determining, based on the signals, a correspondence between a change in each of the at least two vehicle characteristics to each other; and based on a determination in the determining step of a predetermined correspondence, generating a signal representing the state of the driver as being inattentive. - View Dependent Claims (10, 11, 12)
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Specification