Gas sensing device and gas concentration sensing method
US11243198B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 2020 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | Jul 12, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/0036
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas sensing device is adapted to detect a concentration of a target gas. The gas sensing device comprises a dielectric layer, a reference sensing portion, a target sensing portion, and a controller. The dielectric layer is disposed on a surface. The reference sensing portion and the target sensing portion are respectively disposed on a supporting side of the dielectric layer, with said supporting side facing away from the surface. The reference sensing portion includes a first conductive layer and a first sensing layer with low sensitivity to the target gas. The target sensing portion includes a second conductive layer and a second sensing layer with high sensitivity to the target gas. The controller obtains the immittance values of the first conductive layer and the second conductive layer, and calculates a concentration value of the target gas according to the immittance values and a correlation function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.