Multipurpose air monitoring device
US11127271B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2019 |
| Grant date | Sep 21, 2021 |
| Priority date | — |
| Expiry date | Apr 24, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B29/24
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An illustrative example monitoring device includes a plurality of radiation sources that respectively emit a different type of radiation. At least one radiation detector is situated to detect radiation emitted the radiation sources and reflected off airborne particles. The radiation detector has a first sensitivity configured for detecting a concentration of the particles within a first range and a second sensitivity configured for detecting a concentration of the particles within a second, different range. A processor is configured to determine a ratio of the types of detected radiation, a type of the particles reflecting the detected radiation based on the ratio, and the concentration of the particles reflecting the detected radiation based on the first or second sensitivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.