Pressure sensors having improved drift compensation

Abstract

Disclosed example pressure sensors include: a temperature sensor; a pressure measurement assembly configured to output a pressure measurement signal; and measurement circuitry configured to: in response to a first calibration trigger, record a first pressure measured via the electrode, a first timestamp, and a first temperature measurement measured via the temperature sensor; in response to a second calibration trigger, record a second pressure measured via the electrode, a second timestamp, and a second temperature measurement via the temperature sensor; and calculate a first sensor drift rate by: determining a temperature-compensated second measured pressure by removing a first thermal shift from the second pressure; and determining the first sensor drift rate as a first curve between the first measured pressure and the temperature-compensated second measured pressure.

Dependencies are inferred from the claim text.