Method for determining the operational state of a driver

A control system for determining an operational state of a driver of a vehicle, the control system comprising a control unit, the control unit connected to an, awareness detection arrangement comprising at least a first and a second source for generating data relating to the behavior of the driver, wherein the control unit is configured to:

• receive, from the first and the second source, data relating to at least one of physiological data of the driver, the operation of the vehicle, and a model of the driver operating the vehicle;
• compare the data from the first and the second source with a driver state model defining a plurality of predefined driver states for each of the first and the second source, respectively;
• determine based on the comparison, for each of the first and the second source, a state probability for each of the plurality of predefined driver states including determining one of a probability mass function for each of the plurality of predefined driver states;
• and
• weigh the determined driver states for the first and the second source with each other for determining air overall operational state probability for the driver.

A vehicle system, comprising

• a control system for determining an operational state of a driver of a vehicle, and
• an awareness detection arrangement,
• the control system comprising a control unit, the control unit being connected to the awareness detection arrangement,
• the awareness detection arrangement comprising at east a first and a second source for generating data relating to the behavior of the driver,
• wherein the control unit is configured to:
• receive, from the first and the second source, data relating to at least one of physiological data of the driver, the operation of the vehicle, and a model of the driver operating the vehicle;
• compare the data from the first and the second source with a driver state model defining a plurality of predefined driver states for each of the first and the second source, respectively;
• determine based on the comparison, for each of the first and the second source, a state probability for each of the plurality of predefined driver states including determining one of a probability mass function for each of the plurality of predefined driver states;
• and
• weigh the determined driver states for the first and the second source with each other for determining an overall operational state probability for the driver.

A non-transitory computer readable medium embodying a computer program product for determining an operational state of a driver of a vehicle using an awareness detection arrangement, the awareness detection arrangement comprising at least a first and a second source for generating data relating to the behavior of the driver, the computer program product comprising code configured to, when executed by a processor:

• receive, from the first and the second source, data relating to at least one of physiological data of the driver, the operation of the vehicle, and a model of the driver operating the vehicle;
• compare the data from the first and the second source with a driver state model defining a plurality of predefined driver states for each of the first and the second source, respectively;
• determine based on the comparison, for each of the first and the second source, a state probability for each of the plurality of predefined driver states including determining one of a probability mass function for each of the plurality of predefined driver states;
• and
• weigh the determined driver states for the first and the second source with each other for determining an overall operational state probability for the driver.