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US 10,628,707 B2Granted
Time-corrected sensor system
AssigneeContinental Teves AG & Co. oHG
InventorNico Steinhardt
Life of this patent
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Abstract
A sensor system has a plurality of sensor elements and a signal processing device in communication with the plurality of sensor elements. The signal processing device is configured to evaluate more than one of at a substantially similar time and assign time information which includes information on the time of the respective measurement to the measurement data of physical variables, wherein the signal processing device takes into consideration time information at least during the generation of a fusion data set in a fusion filter.
Claims9
A sensor system, the sensor system comprising:
- a plurality of sensor elements configured to measure physical variables and output sensor signals comprising measurement data representing the physical variables measured;
- a signal processing device in communication with the plurality of sensor elements;
- wherein the signal processing device is configured to evaluate each of the sensor signals from the sensor elements during a time period;
- wherein the signal processing device is configured to assign time information, which comprises information on the time of the respective measurement, to the measured physical variables;
- wherein the signal processing device is configured to take into consideration time information at least during the generation of a fusion data set in a fusion filter;
- wherein the signal processing device is configured to determine a defined time span, the defined time span defined by a maximum delay of the input data of the fusion filter, the maximum delay being determined from a maximum difference between the time information of the measured physical variables and the time information of a presently pending function step of the fusion filter, wherein the maximum delay is further defined as being greater than or equal to the maximum expected delay of a measurement of a satellite navigation system which is part of the sensor system;
- the measurement data comprising measured physical variables, the measured physical variables each having offset values and/or change values and/or correction values and/or error values, associated with each of the measured physical variables;
- and
- wherein the fusion filter is configured to take into consideration at least one model assumption of the measured physical variables, wherein the at least one model assumption assumes that offset values and/or change values and/or correction values and/or error values, associated with each of the physcial variables, between one or more function steps of the fusion filter are substantially unchanged within the defined time span for which absolute values and/or internal values of the physical variables are stored.
6 more elements
Dependencies are inferred from the claim text.