The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 07, 2015
Filed:
Nov. 25, 2013
Xtralis Technologies Ltd, Nassau, BS;
Ron Knox, Mount Eliza, AU;
Karl Boettger, Elwood, AU;
Peter Meikle, Mount Albert, AU;
Brian Alexander, Wantirna, AU;
Xtralis Technologies Ltd., Nassau, BS;
Abstract
A smoke detecting method which uses a beam of radiation such as a laser (), to monitor a region, such as a room (). A camera () is used to capture images of part of the room (), including a path of the laser beam. Particles in the laser beam scatter light (), and this is captured by the camera () for analysis. A processor () extracts data relating to the scattered light () to determine the density of particles in the beam, to determine the level of smoke in the region. The laser may have a modulated output () so that images captured without the laser tuned 'on' can be used as a reference point and compared to images taken with the laser turned 'on', to assist in determining the level of scattered light () compared to ambient light. Filters () may be used to decrease signals generated from background light.