Patents Assigned to Xtralis Technologies Ltd.
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Publication number: 20150177137Abstract: A smoke detecting method which uses a beam of radiation such as a laser (16), to monitor a region, such as a room (12). A camera (14) is used to capture images of part of the room (12), including a path of the laser beam. Particles in the laser beam scatter light (30), and this is captured by the camera (14) for analysis. A processor (20) extracts data relating to the scattered light (30) 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 (38) 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 (30) compared to ambient light. Filters (24, 26) may be used to decrease signals generated from background light.Type: ApplicationFiled: March 3, 2015Publication date: June 25, 2015Applicant: Xtralis Technologies Ltd.Inventors: Ron KNOX, Karl BOETTGER, Peter MEIKLE, Brian ALEXANDER
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Patent number: 9057485Abstract: A beam detector including a light source, a receiver, and a target, acting in cooperation to detect particles in a monitored area. The target reflects incident light, resulting in reflected light being returned to receiver. The receiver is capable of recording and reporting light intensity at a plurality of points across its field of view. In the preferred form the detector emits a first light beam in a first wavelength band; a second light beam in a second wavelength band; and a third light beam in a third wavelength band, wherein the first and second wavelengths bands are substantially equal and are different to the third wavelength band.Type: GrantFiled: August 4, 2014Date of Patent: June 16, 2015Assignee: Xtralis Technologies LtdInventors: Ron Knox, Karl Boettger, Kemal Ajay
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Publication number: 20150160175Abstract: 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).Type: ApplicationFiled: February 12, 2015Publication date: June 11, 2015Applicant: Xtralis Technologies Ltd.Inventors: Ron KNOX, Karl BOETTGER, Kemal AJAY
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Publication number: 20150128722Abstract: A method of detecting one or more blocked sampling holes in a pipe of an aspirated smoke detector system. The method includes ascertaining the base flow of fluid through a particle detector using a flow sensor; monitoring subsequent flow through the particle detector; comparing the subsequent flow with the base flow; and indicating a fault if the difference between the base flow and the subsequent flow exceeds a predetermined threshold.Type: ApplicationFiled: October 17, 2014Publication date: May 14, 2015Applicant: Xtralis Technologies Ltd.Inventors: Kemal AJAY, Arjun Vinoo CAPRIHAN, Michael REZNY
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Patent number: 9025144Abstract: 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).Type: GrantFiled: November 14, 2008Date of Patent: May 5, 2015Assignee: Xtralis Technologies Ltd.Inventors: Ron Knox, Kemal Ajay, Karl Boettger
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Patent number: 9007223Abstract: 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).Type: GrantFiled: July 8, 2013Date of Patent: April 14, 2015Assignee: Xtralis Technologies Ltd.Inventors: Ron Knox, Karl Boettger, Kemal Ajay
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Patent number: 9002065Abstract: A smoke detecting method which uses a beam of radiation such as a laser (16), to monitor a region, such as a room (12). A camera (14) is used to capture images of part of the room (12), including a path of the laser beam. Particles in the laser beam scatter light (30), and this is captured by the camera (14) for analysis. A processor (20) extracts data relating to the scattered light (30) 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 (38) 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 (30) compared to ambient light. Filters (24, 26) may be used to decrease signals generated from background light.Type: GrantFiled: November 25, 2013Date of Patent: April 7, 2015Assignee: Xtralis Technologies Ltd.Inventors: Ron Knox, Karl Boettger, Peter Meikle, Brian Alexander
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Patent number: 8892399Abstract: A method of detecting one or more blocked sampling holes in a pipe of an aspirated smoke detector system. The method includes ascertaining the base flow of fluid through a particle detector using a flow sensor; monitoring subsequent flow through the particle detector; comparing the subsequent flow with the base flow; and indicating a fault if the difference between the base flow and the subsequent flow exceeds a predetermined threshold.Type: GrantFiled: July 9, 2012Date of Patent: November 18, 2014Assignee: XTralis Technologies LtdInventors: Kemal Ajay, Arjun Vinoo Caprihan, Michael Rezny
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Patent number: 8804119Abstract: A particle detection system including; at least one light source adapted to illuminate a volume being monitored at at least two wavelengths; a receiver having a field of view and being adapted to receive light from at least one light source after said light has traversed the volume being monitored and being adapted to generate signals indicative of the intensity of light received at regions within the field of view of the receiver; a processor associated with the receiver adapted to process the signals generated by the receiver to correlate light received at at least two wavelengths in corresponding regions within the field of view of the receiver and generate an output indicative of the relative level of light received at the two wavelengths.Type: GrantFiled: June 10, 2009Date of Patent: August 12, 2014Assignee: Xtralis Technologies LtdInventors: Ron Knox, Karl Boettger, Kemal Ajay
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Patent number: 8797531Abstract: A beam detector (10) including a light source (32), a receiver (34), and a target (36), acting in co-operation to detect particles in a monitored area (38). The target (36), reflects incident light (40), resulting in reflected light (32) being returned to receiver (34). The receiver (34) is a receiver is capable of recording and reporting light intensity at a plurality of points across its field of view. In the preferred form the detector (10) emits a first light beam (3614) in a first wavelength band; a second light beam (3618) in a second wavelength band; and a third light beam (3616) in a third wavelength band, wherein the first and second wavelengths bands are substantially equal and are different to the third wavelength band.Type: GrantFiled: May 3, 2010Date of Patent: August 5, 2014Assignee: Xtralis Technologies LtdInventors: Ron Knox, Karl Boettger, Kemal Ajay
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Publication number: 20140197956Abstract: A system and method of reducing the incidence of false alarms attributable to dust in smoke detection apparatus. The method includes obtaining at least two sample air flows, subjecting a first airflow to particle reduction and measuring the level of particles in the first airflow and generating a first signal indicative of the intensity. The method also includes measuring the level of particles in the second airflow and generating a second signal indicative of the intensity. The first signal is compared to a predetermined alarm level and, if the alarm level is achieved, the first and second signals are subsequently compared and an output signal is generated based on the relative difference between the first and second signals.Type: ApplicationFiled: June 21, 2012Publication date: July 17, 2014Applicant: Xtralis Technologies Ltd.Inventors: Brian Alexander, Kemal Ajay
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Patent number: 8620031Abstract: A smoke detecting method which uses a beam of radiation such as a laser (16), to monitor a region, such as a room (12). A camera (14) is used to capture images of part of the room (12), including a path of the laser beam. Particles in the laser beam scatter light (30), and this is captured by the camera (14) for analysis. A processor (20) extracts data relating to the scattered light (30) 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 (38) 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 (30) compared to ambient light. Filters (24, 26) may be used to decrease signals generated from background light.Type: GrantFiled: February 25, 2013Date of Patent: December 31, 2013Assignee: Xtralis Technologies LtdInventors: Ron Knox, Karl Boettger, Peter Meikle, Brian Alexander
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Publication number: 20130199270Abstract: A sensing system and method for detecting particles in an air volume includes a main airflow path including an inlet from the air volume. Also included is a collection site within the main airflow path. The collection site is for drawing an air sample from the main airflow path. Additionally the system includes a means to induce a localized increase in particle speed at the collection site relative to air speed along the remainder of the main airflow path. The means to induce a localized increase includes an auxiliary airflow path from the main airflow path. The auxiliary airflow path has an exit upstream of the collection site. In an alternative form of the invention, the means to induce the localized increase in particle speed at the collection site comprises a venturi in the main airflow path with the collection site being disposed along the venturi.Type: ApplicationFiled: March 3, 2011Publication date: August 8, 2013Applicant: Xtralis Technologies LtdInventors: Rajiv Kumar Singh, Kemal Ajay
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Publication number: 20130160571Abstract: There is described a duct detector and components for duct detectors. In one form the duct detector includes: a port unit and detector unit. The port unit is mountable to a duct in use so as to position one or more ports in the duct. The detector unit includes a detection region. The port unit and detector unit are reconfigurable between a close coupled configuration and a separated configuration in which the units are mountable with a variable separation between them and coupled by one or more elongate conduits to provide fluid communication between the units.Type: ApplicationFiled: September 9, 2011Publication date: June 27, 2013Applicant: Xtralis Technologies Ltd.Inventor: Alasdair James Williamson
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Publication number: 20130061659Abstract: There is described a filter arrangement for a particle detector for detecting particles in an environment. The particle detector can include one or more sensors for analyzing fluid in a detection region to produce sensor output. The filter arrangement includes structure defining flow paths, for conveying fluid from the environment towards the detection region, including a first flow path, which includes a filter, and a second flow path bypassing the filter. There is also provided a mechanism for controlling relative flow rates of fluid through the first flow path and the second flow path and a controller configured to receive the sensor output corresponding to at least two relative flow rates and apply logic thereto to generate an output indicative of a condition of the filter.Type: ApplicationFiled: March 4, 2011Publication date: March 14, 2013Applicant: Xtralis Technologies Ltd.Inventors: Kemal Ajay, Nitin Vaveda
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Publication number: 20120154161Abstract: A particle detector including a chamber, a first aspirator, a sensor(s), a controller and clean air supply. The controller, when in a detecting mode, receives an indicative signal from the sensor and applies logic to the indicative signal to generate a further signal, and when in the purge mode controls substantial purging of the chamber of sample fluid with clean fluid from the clean fluid supply. The controller receives the indicative signal when the chamber is so purged and if necessary adjusts the logic in response thereto.Type: ApplicationFiled: July 7, 2010Publication date: June 21, 2012Applicant: Xtralis Technologies LtdInventors: Ron Knox, Karl Boettger
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Patent number: 8152886Abstract: A filter arrangement for removing impurities from a fluid is disclosed, the filter arrangement (10) includes a plurality of screen portions (18, 20) through which the fluid passes. The screen portions include a first screen portion (18) and a second screen portion (20) separated by a predetermined distance. The predetermined distance can be determined on the basis of a threshold particle length. In one form the filter arrangement (10) is mounted in a housing (16) which is configured to receive two filter elements (18, 20) arranged in a nested configuration. A particle detector using the filter is described.Type: GrantFiled: November 23, 2007Date of Patent: April 10, 2012Assignee: Xtralis Technologies Ltd.Inventor: Ron Knox
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Publication number: 20120079871Abstract: An apparatus and methods for detecting the presence of gases is described. The gas detection apparatus includes, a housing adapted to be in fluid communication with a duct of a particle detection system, and at least one gas detector sensitive to a target species arranged in fluid communication with the housing to detect the presence of the target species in at least part of the air sample flowing in a duct. In one form the gas detection apparatus forms part of a system for detecting a condition in an environment that includes, a particle detector; a duct system in fluid communication with the environment and the particle detector and an aspirator to draw an air sample flow from the environment to the particle detector.Type: ApplicationFiled: June 3, 2010Publication date: April 5, 2012Applicant: Xtralis Technologies Ltd.Inventor: Alasdair James Williamson
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Patent number: 8118918Abstract: In one form the present invention provides an apparatus in an airflow path before a particle detector, wherein the apparatus removes a substantially constant proportion of all sizes of airborne particles from the airflow over time. In an example the apparatus includes a flow splitting arrangement configured to divide a fluid flow into a plurality of sub-flows, the splitting arrangement 10 including means for defining a plurality of substantially identically dimensioned flow apertures configured to direct a portion of the fluid into a respective sub-flow.Type: GrantFiled: February 20, 2007Date of Patent: February 21, 2012Assignee: Xtralis Technologies Ltd.Inventors: Ron Knox, Scott James Martin, Scott Anthony Wilson, Megan Wilson, legal representative
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Publication number: 20110221889Abstract: A particle detection system including; at least one light source adapted to illuminate a volume being monitored at least two wavelengths; a receiver) having a field of view and being adapted to receive light from at least one light source after said light has traversed the volume being monitored and being adapted to generate signals indicative of the intensity of light received at regions within the field of view of the receiver; a processor associated with the receiver adapted to process the signals generated by the receiver to correlate light received at least two wavelengths in corresponding regions within the field of view of the receiver and generate an output indicative of the relative level of light received at the two wavelengths.Type: ApplicationFiled: June 10, 2009Publication date: September 15, 2011Applicant: Xtralis Technologies Ltd.Inventors: Ron Knox, Karl Boettger, Kemal Ajay