Patent ID: 11866145
Assignee: INFINEON TECHNOLOGIES AG
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B

Claim 13:
14. A method for sensing a physical parameter, the method comprising:
correcting a measured signal so as to obtain a corrected signal, the measured signal being obtained by measuring the physical parameter using a sensor element and by providing the measured signal, wherein the measured signal is influenced by a sensor drift of the sensor element;
using a fast pressure change detection filter, evaluating the measured signal to determine a drift effect of the sensor drift on the measured signal;
using a slow pressure change detection filter, correcting the measured signal so as to compensate for the drift effect; and
using a reference value updater, outputting the corrected signal,
wherein the reference value updater is configured for providing a reference value for determination of a correction value used for correcting the measured signal, wherein the reference value updater is configured for using a determined corrected value of the physical parameter contained in the corrected signal as reference value for a subsequent iteration of drift detection when no drift occurs and for updating the reference value in case a drift occurs, and
wherein an output of the fast pressure change detection filter is coupled to a first input of the reference value updater, and an output of the slow pressure change detection filter is coupled to a second input of the reference value updater.