Gas sensing device and method for determining a calibrated measurement value for a concentration of a target gas
AssigneeInfineon Technologies AG
InventorsCaterina Travan, Cecilia Carbonelli, Ulrich Krumbein
Life of this patent
Estimating the term…
Abstract
A method for determining a calibrated measurement value for a concentration of the target gas comprises obtaining a measurement signal based on the concentration of the target gas. The method further comprises determining the calibrated measurement value based on the measurement signal and based on a calibration model. The calibration model is based on calibration data of a plurality of test sensor units having the same type as the sensor unit.
Claims20
A gas sensing device for sensing a target gas, the gas sensing device comprising:
- a sensing unit for sensing the target gas, the sensing unit being configured for providing a measurement signal based on a concentration of the target gas in an environment of the gas sensing device;
- a signal calibration unit, configured for determining a calibrated measurement value based on the measurement signal and based on a calibration model,
- wherein the calibration model is based on calibration data of a plurality of test sensor units having a same type as the sensing unit, and
- wherein the signal calibration unit is further configured for, in response to determining malfunctioning of the gas sensing device, switching the calibration model to a second calibration model for the sensing unit.
A method for determining a calibrated measurement value for a concentration of a target gas, the method comprising:
- obtaining a measurement signal based on the concentration of the target gas from a sensor unit;
- determining the calibrated measurement value based on the measurement signal and based on a calibration model, wherein the calibration model is based on calibration data of a plurality of test sensor units having a same type as the sensor unit;
- determining malfunctioning of the gas sensing device;
- and
- in response to determining the malfunctioning, switching the calibration model to a second calibration model for the sensing unit.
A gas sensing device for sensing a target gas, the gas sensing device comprising:
- a sensing unit for sensing the target gas, the sensing unit being configured for providing a measurement signal based on a concentration of the target gas in an environment of the gas sensing device;
- a signal calibration unit, configured for determining a calibrated measurement value based on the measurement signal and based on a calibration model,
- wherein the calibration model is based on calibration data of a plurality of test sensor units having a same type as the sensing unit, and
- wherein the signal calibration unit is further configured for:
- in response to determining a malfunctioning of the gas sensing device, switching the calibration model to a second calibration model for the sensing unit;
- detecting whether an exposure of the sensing unit to the target gas exceeds a first threshold;
- if the exposure of the sensing unit to the target gas exceeds the first threshold, determining a first baseline value of the sensing unit;
- and
- using the first baseline value as an input for the calibration model to determine the calibrated measurement value.
Dependencies are inferred from the claim text.