Sensor system comprising a fusion filter for common signal processing
First Claim
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1. A sensor system arranged in a vehicle, the sensor system configured to output navigation data or driving dynamics data, the sensor system comprising:
- a plurality of sensor elements, wherein the plurality of sensor elements each detect different physical variables of the vehicle and each output a sensor signal of the different physical variables measured by the sensor elements,a signal processing device, wherein the signal processing device is configured to perform a joint evaluation of the sensor signals of the sensor elements, wherein the signal processing device has a strapdown algorithm unit configured to execute a strapdown algorithm for the output of navigation data or driving dynamics data,wherein the signal processing device has a fusion filter which configured to provide a defined fusion data set in a course of the joint evaluation of at least the sensor signals and/or signals derived therefrom of the sensor elements,wherein the fusion data set has in each case data with respect to defined physical variables, wherein the fusion data set comprises, with respect to at least one physical variable, a value of the physical variable and information about a data quality of the physical variable,wherein the relative values of the respective physical variables of the fusion data set are correction values which are assigned in each case a variance as information about the data quality thereof,wherein the output data of the strapdown algorithm unit additionally have the variances of the physical variables, andwherein the strapdown algorithm unit provides the output data to a vehicle system.
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Abstract
A sensor system includes a plurality of sensor elements and a signal processing device. The plurality of sensor elements detect at least in part different primary measurement variables and utilize at least in part different measurement principles. The signal processing device is configured to evaluate the sensor signals of the sensor elements.
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Citations
6 Claims
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1. A sensor system arranged in a vehicle, the sensor system configured to output navigation data or driving dynamics data, the sensor system comprising:
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a plurality of sensor elements, wherein the plurality of sensor elements each detect different physical variables of the vehicle and each output a sensor signal of the different physical variables measured by the sensor elements, a signal processing device, wherein the signal processing device is configured to perform a joint evaluation of the sensor signals of the sensor elements, wherein the signal processing device has a strapdown algorithm unit configured to execute a strapdown algorithm for the output of navigation data or driving dynamics data, wherein the signal processing device has a fusion filter which configured to provide a defined fusion data set in a course of the joint evaluation of at least the sensor signals and/or signals derived therefrom of the sensor elements, wherein the fusion data set has in each case data with respect to defined physical variables, wherein the fusion data set comprises, with respect to at least one physical variable, a value of the physical variable and information about a data quality of the physical variable, wherein the relative values of the respective physical variables of the fusion data set are correction values which are assigned in each case a variance as information about the data quality thereof, wherein the output data of the strapdown algorithm unit additionally have the variances of the physical variables, and wherein the strapdown algorithm unit provides the output data to a vehicle system. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification