Particle detection
US9025144B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2008 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Dec 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/075
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A particle detection system (100), such as an active video smoke detection system, includes at least one illumination means (102) for directing a beam (106) of radiation through at least part of the air volume being monitored (110), an image sensor (104) is positioned to capture images of at least part of a beam (106) from illumination means (102); and means to analyze (107) the captured images to detect the presence of particles within the volume. At least 29 different aspects are described for improving the sensitivity, usability, and robustness of particle detection. These include, for example, configuring illumination means (102) to create a curtain of light or a rapidly-scanned beam across the air volume (110), and configuring a reflector to steer or change direction of a beam reflected from illumination means (102).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.