Sensor calibration method and sensor
AssigneeContinental Autonomous Mobility US, LLC
InventorsWolfgang Schulz, Barton M. Goldstein, Nan Luo
Life of this patent
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Abstract
According to various embodiments, a sensor calibration method may be provided. The sensor calibration method may include determining a general temperature dependence of correction values of a plurality of sample sensors. The sensor calibration method may further include determining, for a sensor, an amplitude dependence of correction values of the sensor at a predefined temperature. The sensor calibration method may further include correcting output of the sensor based on the amplitude dependence of the correction values of the sensor at the predefined temperature, and further based on the general temperature dependence of the correction values of the plurality of sample sensors.
Claims16
A sensor calibration method comprising:
- determining a general temperature dependence of correction values of a plurality of sample sensors;
- determining, for a sensor, an amplitude dependence of correction values of the sensor at a predefined temperature;
- and
- correcting output of the sensor based on the amplitude dependence of the correction values of the sensor at the predefined temperature, and further based on the general temperature dependence of the correction values of the plurality of sample sensors.
The sensor calibration method of claim [0032], wherein determining for each sample sensor of the plurality of sample sensors, a respective temperature dependence of the correction values of the sample sensor, comprises
- measuring respective amplitude dependence of the correction values of the sample sensor, at a plurality of temperatures.
The sensor calibration method of claim [0032], wherein determining the general temperature dependence of correction values of the plurality of sample sensors comprises
- fitting the temperature correction curve with a polynomial, and determining coefficients of the polynomial.
A sensor comprising:
- a non-volatile memory storing first data and second data, wherein the first data is representative of a general temperature dependence of correction values of a plurality of sample sensors, and the second data is representative of amplitude dependence of correction values of the sensor at a predefined temperature;
- and
- a processor configured to correct an output of the sensor based on the first data and further based on the second data.
A data structure generated by a sensor, the data structure comprising outputs of the sensor corrected based on first data and second data stored in a non-volatile memory of the sensor, wherein the first data is representative of a general temperature dependence of correction values of a plurality of sample sensors, and the second data is representative of amplitude dependence of correction values of the sensor at a predefined temperature.
Dependencies are inferred from the claim text.