Method and system for combining sensor data
AssigneeVolvo Lastvagnar AB
InventorFredrik Sandblom
Life of this patent
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Abstract
A method is provided for combining sensor data collected by at least two sensors coupled to at least one application, wherein at least one of the sensors provides driver-related sensor data of a driver-related behaviour and at least one external sensor provides sensor date not related to driver-related behaviour. The sensor data of the at least two sensors are combined as the respective measurement errors of the data are uncorrelated in time with respect to the at least one application.
Claims21
A method for combining sensor data collected by at least two (100, 110) coupled to at least one application (50), characterized in that wherein at least one of the sensors (100) provides driver-related sensor data of a driver-related behaviour and at least one external sensor (110) provides sensor date not related to driver-related behaviour, wherein the sensor data of the at least two sensors (100, 110) are combined as the respective measurement errors of the data are uncorrelated in time with respect to the at least one application (50).
The method according to one of the preceding claims, characterized in that the sensor data are transmitted to one or more applications (50) subsequent to the sensor fusion unit (20), wherein estimation errors are correlated in time after processing in the sensor fusion unit (20).
The method according to one of the preceding claims, characterized in that the sensor data are pre-processed before fed into the sensor fusion unit (20).
The method according to one of the preceding claims, characterized in that driver-related sensor data comprises at least driver attention and/or driver gaze direction data.
The method according to one of the preceding claims, characterized in that the driver-related sensor data and data derived from the application (50) are used to estimate the driver's field of view (120).
The method according to one of the preceding claims, characterized in that a reaction time of the driver and/or a distraction level of the driver is derived from a comparison between driver-related sensor data indicating cognitive detection of an object (60) and detection of the object (60) by the at least one external sensor (110).
The method according to one of the preceding claims, characterized in that a reaction time is extracted from a time difference between a detection of an object by the at least one external sensor (110) and driver-related sensor data indicating cognitive detection of the same object (60) by the driver.
The method according to one of the preceding claims, characterized in that that the at least one application (50) is a vehicular safety system.
The method according to one of the preceding claims, characterized in that the driver-related sensor data are combined with tracking data of one or more objects (60).
A safety system of a vehicle (90) employing the method according to one of the preceding claims.
Dependencies are inferred from the claim text.