Temperature compensation method for gas sensor module using change of heater current
US10520470B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 25, 2017 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Feb 10, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A temperature compensation method for a gas sensor module using a change of heater current, may include deriving an output voltage equation of the gas sensor module from a cell reaction equation of an electrolyte and deriving the output voltage equation to an equation for a fluctuation temperature which varies depending on a sensor temperature and an unknown type compensation coefficient; deriving the fluctuation temperature to heater current indicating a current value of a heater formed in the gas sensor module and deriving the output voltage equation by the heater current and the compensation coefficient; and measuring output voltage depending on current of heaters at two or more points to determine the compensation coefficient of the output voltage equation, and the output voltage is configured to be compensated with the change of the heater current measured by the gas sensor module regardless of an external temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.