Particle detector, system and method
AssigneeVFS Technologies Limited
InventorsRon Knox, Karl Boettger, Kemal Ajay
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Abstract
The invention provides use of one or more emitted beams of radiation (16), for example, laser beam(s), in combination with an image capturing means (14), for example, one or more video cameras and/or optical elements to detect particles (30), for example smoke particles, located in an open space (12).
Claims27
A method of detecting particles comprising:
- emitting a beam of radiation into a monitored region;
- and
- detecting a variation in images of the region with image capturing means such that the variation in images indicates the presence of the particles,
- wherein the steps of emitting and detecting comprise determining an ON period of the beam of radiation and an exposure period of the image capturing means on the basis of a power level of the emitted beam.
A system for detecting particles in monitored region, including one or more light sources configured to at least periodically emit a beam of radiation into the monitored region, one or more image capture devices for collecting an image of the region being monitored during an exposure period, an image processor for determining a variation in the images to detect the presence of particles at a plurality of locations within the region wherein at least one of the duration and timing of the emission of the beam into the monitored region and exposure period are determined on the basis of a power level of the emitted beam.
Dependencies are inferred from the claim text.