Methods, apparatuses, and systems for gas sensor drift adjustment

An apparatus comprising at least one processor and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to:

• receive a plurality of sensor measurements from a gas sensor for at least a portion of a sampling period;
• generate sampled sensor data from the plurality of sensor measurements, wherein the sampled sensor data comprises at least a subset of the plurality of sensor measurements that satisfy a set of operational conditions and a sample size threshold;
• generate estimated drift data based on the sampled sensor data and one or more drift rate constraints;
• store the estimated drift data;
• and
• adjust subsequent gas sensor output by applying a drift adjustment model to the gas sensor output, wherein the drift adjustment model is generated based on the stored estimated drift data.

At least one non-transitory computer-readable storage medium having computer coded instructions configured to, when executed by at least one processor:

• receive a plurality of sensor measurements from a gas sensor for at least a portion of a sampling period;
• generate sampled sensor data from the plurality of sensor measurements, wherein the sampled sensor data comprises at least a subset of the plurality of sensor measurements that satisfy a set of operational conditions and a sample size threshold;
• generate estimated drift data based on the sampled sensor data and one or more drift rate constraints;
• store the estimated drift data;
• and
• adjust subsequent gas sensor output by applying a drift adjustment model to the gas sensor output, wherein the drift adjustment model is generated based on the stored estimated drift data.