公开(公告)号：MY165167A

公开(公告)日：2018-02-28

申请号：MYPI2012003959

申请日：2011-03-03

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： SINGH RAJIV KUMAR ,  AJAY KEMAL

IPC: G01N1/22 ,  G01N1/24 ,  G08B17/00

Abstract: THE PRESENT INVENTION RELATES TO A SENSING SYSTEM AND METHOD FOR DETECTING PARTICLES IN AN AIR VOLUME, WITH AN INCREASE IN MOMENTUM AROUND A SAMPLE COLLECTION SITE. THE INVENTION INCLUDES A PARTICLE DETECTOR AND A MAIN AIRFLOW PATH (A, F) INCLUDING AN INLET FROM THE AIR VOLUME. ALSO INCLUDED IS A SAMPLE COLLECTION SITE (E) WITHIN THE MAIN AIRFLOW PATH. THE SAMPLE COLLECTION SITE IS FOR DRAWING AN AIR SAMPLE FROM THE MAIN AIRFLOW PATH TO THE PARTICLE DETECTOR. ADDITIONALLY THE SYSTEM INCLUDES A MEANS TO INDUCE A LOCALISED INCREASE IN PARTICLE SPEED AT THE COLLECTION SITE (E) BY AN AUXILIARY AIRFLOW PATH (K) FROM THE MAIN AIRFLOW PATH. THE AUXILIARY AIRFLOW PATH (K) HAS AN EXIT (I) UPSTREAM OF THE COLLECTION SITE. THE LOCALIZED INCREASE IN PARTICLE SPEED IS RELATIVE TO AIR SPEED UPSTREAM OF THE AUXILIARY AIRFLOW PATH EXIT. IN AN ALTERNATIVE FORM OF THE INVENTION, THE MEANS TO INDUCE THE LOCALISED INCREASE IN PARTICLE SPEED AT THE SAMPLE COLLECTION SITE COMPRISES A VENTURI IN THE MAIN AIRFLOW PATH WITH THE SAMPLE COLLECTION SITE BEING DISPOSED ALONG THE VENTURI.

公开(公告)号：HK1213632A1

公开(公告)日：2016-07-08

申请号：HK15112561

申请日：2015-12-21

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： AJAY KEMAL ,  VAYEDA NITIN

IPC: G01N20060101

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：AU2009290147B2

公开(公告)日：2015-09-03

申请号：AU2009290147

申请日：2009-09-04

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： ALEXANDER BRIAN ,  VAYEDA NITIN ,  AJAY KEMAL

IPC: G01N21/53 ,  G01N21/85 ,  G01N21/94 ,  G08B17/107

Abstract: A method of detecting particles in an air flow is described. The method includes receiving a signal indicative of light intensity scattered from the air flow at a plurality of wavelengths and processing the signal indicative of the intensity of received light at each of the wavelengths and a corresponding wavelength dependent parameter to generate an output signal indicative of at least one characteristic of particles in the air flow. A particle detection system is also described.

公开(公告)号：IN91DEN2014A

公开(公告)日：2015-05-15

申请号：IN91DEN2014

申请日：2014-01-06

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： AJAY KEMAL ,  ALEXANDER BRIAN

IPC: G08B17/10

Abstract: 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.

公开(公告)号：HK1194850A1

公开(公告)日：2014-10-24

申请号：HK14108128

申请日：2014-08-07

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： AJAY KEMAL ,  ALEXANDER BRIAN

IPC: G08B20060101

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：HK1163814A1

公开(公告)日：2012-09-14

申请号：HK12104287

申请日：2012-05-02

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： ALEXANDER BRIAN ,  VAYEDA NITIN ,  AJAY KEMAL

IPC: G08B20060101 ,  G01N20060101

Abstract: A method of detecting particles in an air flow is described. The method includes receiving a signal indicative of light intensity scattered from the air flow at a plurality of wavelengths and processing the signal indicative of the intensity of received light at each of the wavelengths and a corresponding wavelength dependent parameter to generate an output signal indicative of at least one characteristic of particles in the air flow. A particle detection system is also described.

公开(公告)号：CA2705830A1

公开(公告)日：2009-05-22

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: 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 (1 10), an image sensor (104) is positioned to capture images of at least part of abeam (106) from illumination means (102); and means to analyse (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).