Apparatus and method for detecting smoke based on multiple wavelengths
US12067856B2 · kind B2 · utility
0Cited by
4References
16Claims
0Family size
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Key dates
| Filing date | Jul 15, 2022 |
| Grant date | Aug 20, 2024 |
| Priority date | — |
| Expiry date | Dec 12, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/0046
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A smoke detection apparatus based on multiple wavelengths is provided, which includes: a chamber configured to receive an inflow of a smoke; a detector including a light emitter having a plurality of light sources that radiate light having a plurality of different wavelengths into a space in the chamber, and a light receiver configured to receive scattered light by the plurality of light sources; and a controller configured to control an operation of the detector and to distinguish between fire smoke and non-fire quasi-smoke by detecting and analyzing a light receiving signal of the light receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.