公开(公告)号：CA2839363A1

公开(公告)日：2007-08-30

申请号：CA2839363

申请日：2007-02-20

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  MARTIN SCOTT JAMES ,  WILSON SCOTT ANTHONY

IPC: G01N1/38

Abstract: In one form the present invention provides an apparatus (10) in an airflow path before a particle detector (38), wherein the apparatus (10) removes a substantially constant proportion of all sizes of airborne particles from the airflow over time. In a preferred form the apparatus includes a flow splitting arrangement (18) configured to divide a fluid flow into a plurality of sub-flows, the splitting arrangement 10 including means (22, 23) for defining a plurality of substantially identically dimensioned flow apertures configured to direct a portion of the fluid into a respective sub-flow.

公开(公告)号：CA2883638A1

公开(公告)日：2006-05-18

申请号：CA2883638

申请日：2005-11-14

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  BOETTGER KARL ,  AJAY KEMAL

IPC: G01N15/00

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).

公开(公告)号：CA2858059A1

公开(公告)日：2004-11-25

申请号：CA2858059

申请日：2004-05-14

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  BOETTGER KARL ,  MEIKLE PETER ,  ALEXANDER BRIAN

IPC: G01N15/00 ,  G01N15/02 ,  G08B17/103 ,  G08B17/107

Abstract: A smoke detector (10) is disclosed which uses a beam of radiation such as a laser (16), to monitor a region, such 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 can be used as a reference point and compared to images taken with the laser 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.

公开(公告)号：CA2760026C

公开(公告)日：2018-03-20

申请号：CA2760026

申请日：2010-05-03

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  BOETTGER KARL ,  AJAY KEMAL

IPC: G08B17/107 ,  G01N21/53

Abstract: A beam detector (10) including a light source (32), a receiver (34), and a target (36), acting in co-operation to de-tect 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.

公开(公告)号：CA2705830C

公开(公告)日：2018-03-13

申请号：CA2705830

申请日：2008-11-14

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  AJAY KEMAL ,  BOETTGER KARL

IPC: G01N21/53 ,  G08B17/107

Abstract: There are described systems for improving the sensitivity, usability, and robustness of particle detection systems (100) adapted to detect particles directly in a volume (110) being monitored, the system (100) including 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 a least part of a beam (106) from an illumination means (102); and means to analyse (107) the captured images to detect the presence of particles within the volume on the basis of radiation captured in the images.

公开(公告)号：CA2858059C

公开(公告)日：2017-11-07

申请号：CA2858059

申请日：2004-05-14

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  BOETTGER KARL ,  MEIKLE PETER ,  ALEXANDER BRIAN

IPC: G01N15/00 ,  G01N15/02 ,  G08B17/103 ,  G08B17/107

Abstract: A smoke detector is disclosed 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 can be used as a reference point and compared to images taken with the laser 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.

公开(公告)号：HK1208555A1

公开(公告)日：2016-03-04

申请号：HK15109197

申请日：2015-09-18

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  BOETTGER KARL ,  AJAY KEMAL

IPC: G08B20060101 ,  G01N20060101 ,  G01S20060101

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).

公开(公告)号：AU2015249058A1

公开(公告)日：2015-11-12

申请号：AU2015249058

申请日：2015-10-27

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  AJAY KEMAL ,  BOETTGER KARL

IPC: G08B17/107 ,  G01N21/53

Abstract: A beam detector including a light source, a receiver, and a target, acting in co-operation to detect particles in a monitored area. The target, reflects incident light, resulting in reflected light being returned to receiver. The receiver is a receiver is capable of recording and reporting light intensity at 5 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.

公开(公告)号：CA2875258A1

公开(公告)日：2013-12-12

申请号：CA2875258

申请日：2013-06-07

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  NAYLOR MATTHEW ,  AJAY KEMAL ,  SINGH RAJIV

IPC: G08B17/10

Abstract: The invention relates to a particle detector, systems, and methods for detecting the presence of particles in a volume of air, most particularly it relates to detection systems and methods that use multiple modes of detection to detect the presence of particles. Preferably the particles being detected are particles that indicate an actual or incipient fire, or pyrolysis, such as smoke.

公开(公告)号：HK1165895A1

公开(公告)日：2012-10-12

申请号：HK12106544

申请日：2012-07-04

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  COOPER KATE

IPC: G01N20060101 ,  G08B20060101