Thermal humidity measuring device
US11092559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 4, 2017 |
| Grant date | Aug 17, 2021 |
| Priority date | — |
| Expiry date | Mar 16, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N25/64
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thermal humidity measuring device includes first and second heating elements, and is capable of obtaining a plurality of measurement values (measured values) by effectively utilizing each of the heating elements, which includes measuring humidity by the first heating element. A thermal humidity measuring device includes a first bridge circuit that includes a first heating element that senses humidity, and a second bridge circuit that includes a second heating element that heats air around the first heating element. In the thermal humidity measuring device, a first output signal is extracted from the first bridge circuit, and the humidity is sensed. A second output signal is extracted from the second bridge circuit, and the second output signal includes information relating to at least any one of pressure, an air flow rate, and air temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.