Device for measuring pressure, gas and / or moisture based on ambient humidity
US11467114B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Feb 18, 2020 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Apr 27, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2027/222
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus and a method for measuring pressure, gas and/or humidity, the apparatus having at least one sensor with at least one capacitor comprising at least two electrodes that are arranged in a horizontal direction relative to one another along and on a flexible support material. At least one dielectric layer is arranged between the electrodes and at least one at least partially moisture-permeable and/or moisture-absorbing and/or gas-permeable and/or gas-absorbing moisture layer is arranged at least in some places on a side, facing away from a support material, of at least one electrode and/or the dielectric layer. At least one electrode and/or the dielectric layer are thus arranged transversely between the support material and the moisture layer. A capacitance is at least partially changed by moisture hitting the dielectric layer, and a processing unit measures and/or stores this change, so as to create a capacitive moisture sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.