Control device for gas sensor
US11249043B2 · kind B2 · utility
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Key dates
| Filing date | Dec 22, 2016 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Feb 9, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/4163
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An SCU as a control device for the gas sensor (first and second NOx sensors) includes an applied voltage switching unit for switching an applied voltage of a pump cell when a deterioration detecting function is performed, and a deterioration rate calculation unit for calculating a deterioration rate of a sensor cell based on a slope during a transient change in an output of the sensor cell according to a switching of the applied voltage by the applied voltage switching unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.