Humidity sensing system and method
US10527539B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2018 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jun 30, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4298
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A humidity sensing method and system comprising a transmitter, comprising a fiber optic head and a light source comprising a single LED emitting a measuring light, a receiver, and a sensing assembly comprising a plurality of optical fibers each comprising a first end fed the measuring light, a transducer positioned along a length thereof, the transducer comprising a side-polished portion of the optical fiber, the side polished portion coated with a gold layer and a film of a hydrophilic material wherein the transducer modifies an intensity of the measuring light dependent on an ambient humidity, and a second end for feeding the modified measuring light to the receiver, wherein the receiver compares an intensity of the measuring light with an intensity of the modified measuring light deriving therefrom a corresponding humidity level and dew point temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.