Method and device for evaluating a degree of fatigue of a vehicle occupant in a vehicle

A non-transitory computer-readable medium having software instructions stored thereon that, when executed by a computing unit of a device, cause the device to carry out a method of evaluating a degree of fatigue of a vehicle occupant, the method comprising:

• providing a first fatigue indicator determined from a first sensor value according to a first calculation rule, the first fatigue indicator representing a first degree of fatigue of the vehicle occupant, wherein the first sensor value represents a measured value of the vehicle and/or measured value relating to a current journey as measured by a first sensor;
• assigning a first metadata record to the first fatigue indicator, wherein the first metadata record represents a characteristic of the first sensor determined according to the first calculation rule;
• providing a second fatigue indicator determined from a second sensor value according to a second calculation rule, the second fatigue indicator representing a second degree of fatigue of the vehicle occupant, wherein the second sensor value represents physiological and/or physical parameters of the vehicle occupant as measured by a second sensor;
• assigning a second metadata record to the second fatigue indicator, wherein the second metadata record represents a characteristic of the second sensor determined according to the second calculation rule;
• determining an overall fatigue indicator representing an overall degree of fatigue of the vehicle occupant by weighting the first fatigue indicator and the second fatigue indicator based on the first metadata record and the second metadata record.

A device for evaluating a degree of fatigue of a vehicle occupant in a vehicle, comprising:

• a first sensor and a second sensor;
• and
• a computing unit which is configured to carry out the acts of:
• providing a first fatigue indicator determined from a first sensor value according to a first calculation rule, the first fatigue indicator representing a first degree of fatigue of the vehicle occupant, wherein the first sensor value represents a measured value of the vehicle and/or measured value relating to a current journey as measured by the first sensor;
• assigning a first metadata record to the first fatigue indicator, wherein the first metadata record represents a characteristic of the first sensor determined according to
• the first calculation rule;
• providing a second fatigue indicator determined from a second sensor value according to a second calculation rule, the second fatigue indicator representing a second degree of fatigue of the vehicle occupant, wherein the second sensor value represents physiological and/or physical parameters of the vehicle occupant as measured by the second sensor;
• assigning a second metadata record to the second fatigue indicator, wherein the second metadata record represents a characteristic of the second sensor determined according to the second calculation rule;
• determining an overall fatigue indicator representing an overall degree of fatigue of the vehicle occupant by weighting the first fatigue indicator and the second fatigue indicator based on the first metadata record and the second metadata record.