Operator drowsiness detection in surface mines
First Claim
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1. A method for deriving a fatigue score which is indicative of a current drowsiness state of an operator, the method comprising steps of:
- measuring, by means of a first sensor, at least one machine control signal which is indicative of a control input from said operator to a machine,measuring, by means of a second sensor, at least one operator signal which is indicative of a physiological and/or a behavioral state of said operator,determining an operator identification signal for uniquely identifying said operator and for taking personal characteristics of said operator into account by means of a personalized fatigue model for improving a precision of the derivation of said fatigue score,loading from a local memory and/or receiving via a wirebound or wireless link from a remote database at least one generic signal which is indicative of said personalized fatigue model for said uniquely identified operator by means of said operator identification signal,wherein the personalized fatigue model is indicative of how at least two of said machine control signal and operator signal contribute to the derivation of the fatigue score, andderiving, using said machine control signal, said operator signal, and said operator identification signal, said fatigue score which is indicative of said current drowsiness state of said uniquely identified operator,wherein said step of deriving said fatigue score comprises a personalized weighing of at least two of said machine control signal and said operator signal.
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Abstract
A method for deriving a fatigue score (100) indicative of a current drowsiness state of an operator (1) measures a plurality of signals (10, 20, 30, 40, 50, 60, 70, 80, 90) and derives a personalized fatigue score (100) for the operator using these signals (10, 20, 30, 40, 50, 60, 70, 80, 90) in a weighted and operator-personalized way.
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Citations
25 Claims
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1. A method for deriving a fatigue score which is indicative of a current drowsiness state of an operator, the method comprising steps of:
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measuring, by means of a first sensor, at least one machine control signal which is indicative of a control input from said operator to a machine, measuring, by means of a second sensor, at least one operator signal which is indicative of a physiological and/or a behavioral state of said operator, determining an operator identification signal for uniquely identifying said operator and for taking personal characteristics of said operator into account by means of a personalized fatigue model for improving a precision of the derivation of said fatigue score, loading from a local memory and/or receiving via a wirebound or wireless link from a remote database at least one generic signal which is indicative of said personalized fatigue model for said uniquely identified operator by means of said operator identification signal, wherein the personalized fatigue model is indicative of how at least two of said machine control signal and operator signal contribute to the derivation of the fatigue score, and deriving, using said machine control signal, said operator signal, and said operator identification signal, said fatigue score which is indicative of said current drowsiness state of said uniquely identified operator, wherein said step of deriving said fatigue score comprises a personalized weighing of at least two of said machine control signal and said operator signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A drowsiness detection device for deriving a fatigue score indicative of a current drowsiness state of an operator comprising:
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a first sensor for measuring at least one machine control signal which is indicative of a control input to a machine from said operator, a second sensor for measuring at least one operator signal which is indicative of a physiological and/or a behavioral state of said operator, and a control unit configured to; determine an operator identification signal for uniquely identifying said operator and for taking personal characteristics of said operator into account by means of a personalized fatigue model for improving a precision of the derivation of said fatigue score, load from a local memory and/or receiving via a wirebound or wireless link from a remote database at least one generic signal which is indicative of said personalized fatigue model for said uniquely identified operator by means of said operator identification signal, wherein the personalized fatigue model is indicative of how at least two of said machine control signal and operator signal contribute to the derivation of the fatigue score, and derive, using said machine control signal, said operator signal, and said operator identification signal, said fatigue score which is indicative of said current drowsiness state of said uniquely identified operator, wherein said step of deriving said fatigue score comprises a personalized weighing of at least two of said machine control signal and said operator signal. - View Dependent Claims (24)
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25. A non-transitory computer program element comprising computer program code for performing, when executed on a control unit, the steps of:
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measuring, by means of a first sensor, at least one machine control signal which is indicative of a control input from said operator to a machine, measuring, by means of a second sensor, at least one operator signal which is indicative of a physiological and/or a behavioral state of said operator, determining an operator identification signal for uniquely identifying said operator and for taking personal characteristics of said operator into account by means of a personalized fatigue model for improving a precision of the derivation of said fatigue score, loading from a local memory and/or receiving via a wirebound or wireless link from a remote database at least one generic signal which is indicative of said personalized fatigue model for said uniquely identified operator by means of said operator identification signal, wherein the personalized fatigue model is indicative of how at least two of said machine control signal and operator signal contribute to the derivation of the fatigue score, and deriving, using said machine control signal, said operator signal, and said operator identification signal, said fatigue score which is indicative of said current drowsiness state of said uniquely identified operator, wherein said step of deriving said fatigue score comprises a personalized weighing of at least two of said machine control signal and said operator signal.
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Specification