Mercedes-benz Group Ag

Robert Boschgmbh

Robert Bosch Gmbh

Andreas Scharf

Philipp Schindler

Johann Klaehn

Christian Wolf

Zsolt Vizi

Stephan Lenor

A method for determining a sensor degradation status of a first sensor system includes: providing data of the first sensor system to represent the environment; providing data of a second sensor system to represent the environment; determining an individual blindness indicator for the first sensor system on the basis of sensor data exclusively of the first sensor system; determining at least one first environment-related determination variable based on the provided data of the first sensor system; determining at least one second environment-related determination variable based on the provided data of the second sensor system; determining a fusion blindness indicator based on a comparison of the at least one first environment-related determination variable with the at least one second environment-related determination variable; and determining the sensor degradation status of the first sensor system based on of the individual blindness indicator and the fusion blindness indicator.

Method for determining a sensor degradation status

A method and device for identifying contamination on a protective screen of a lidar sensor may involve determining a sector background noise in a particular sector of a detection region of the lidar sensor and a detection region background noise is determined in a remaining detection region or the entire detection region. Contamination in the sector in question is then determined if the sector background noise is significantly lower than the detection region background noise. Alternatively, or additionally, a sector background noise is determined in the sector in question at different sensitivities of a receiver of the lidar sensor, and contamination in the sector in question is then determined if a sector background noise determined with a higher sensitivity is not significantly higher than a sector background noise determined with a lower sensitivity.

Method and device for identifying contamination on a protective screen of a lidar sensor

A method for identifying a change of a range of a lidar sensor involves a lidar sensor receiving a reference noise level of infrared radiation. A signal-to-noise ratio of infrared radiation reflected on the reference target and received by the lidar sensor are identified in a reference measurement having a reference target located at a predetermined distance to the lidar sensor. In a driving operation measurement, a current noise level of received infrared radiation is identified and a theoretical distance to a position where the reference target ought to be if, at the current noise level, the same signal-to-noise ratio applies as in the reference measurement is identified from the current noise level. A change in range calculation identifies a difference between the predetermined distance and the theoretical distance. The difference corresponds to the change of the range of the lidar sensor compared to its range during the reference measurement.

Method for identifying a change of a range of a lidar sensor

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Stuttgart, Germany

Andreas Scharf