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公开(公告)号：AU2014336978A1
公开(公告)日：2016-04-28
申请号：AU2014336978
申请日：2014-10-16
Applicant: XTRALIS TECHNOLOGIES LTD , XTRALIS GLOBAL
Inventor： AJAY KEMAL , KNOX RONALD , ALEXANDER BRIAN , COOPER KATE , SINGH RAJIV KUMAR , NORTH THOR , PATTINSON STEPHEN JAMES , MASSINGBARD-MUNDY PETER , WILLIAMSON ALASDAIR JAMES
Abstract: A method of particle detection in an aspirated particle detection system, the system having a sampling pipe network and a particle detector. The sampling pipe network includes at least one sampling pipe in fluid communication with the particle detector, a plurality of sampling inlets through which sample air can enter the at least one sampling pipe, and an opening in the at least one sampling pipe upstream of the plurality of sampling inlets, wherein the opening has lower flow impedance than any one of the sampling inlets. The method includes drawing sample air to the particle detector through the air sampling network; analysing the sample air with the particle detector; entering an amplification phase, in the event that a concentration of particles in the sample air greater than a predetermined threshold is detected, to create a plurality of sample air packets in the sampling pipe, wherein each sample air packet corresponds to a sampling inlet and includes an amplified concentration of air drawn from the corresponding sampling inlet; transporting the sample air including the plurality of sample air packets through the sampling pipe to the particle detector; and determining through which sampling inlet any particles entered the particle detection system.
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公开(公告)号：CA2926732A1
公开(公告)日：2015-04-23
申请号：CA2926732
申请日：2014-10-16
Applicant: XTRALIS TECHNOLOGIES LTD , XTRALIS GLOBAL
Inventor： AJAY KEMAL , KNOX RONALD , ALEXANDER BRIAN , COOPER KATE , SINGH RAJIV KUMAR , NORTH THOR , PATTINSON STEPHEN JAMES , MASSINGBERD-MUNDY PETER , WILLIAMSON ALASDAIR JAMES
Abstract: A method of particle detection in an aspirated particle detection system, the system having a sampling pipe network and a particle detector. The sampling pipe network includes at least one sampling pipe in fluid communication with the particle detector, a plurality of sampling inlets through which sample air can enter the at least one sampling pipe, and an opening in the at least one sampling pipe upstream of the plurality of sampling inlets, wherein the opening has lower flow impedance than any one of the sampling inlets. The method includes drawing sample air to the particle detector through the air sampling network; analysing the sample air with the particle detector; entering an amplification phase, in the event that a concentration of particles in the sample air greater than a predetermined threshold is detected, to create a plurality of sample air packets in the sampling pipe, wherein each sample air packet corresponds to a sampling inlet and includes an amplified concentration of air drawn from the corresponding sampling inlet; transporting the sample air including the plurality of sample air packets through the sampling pipe to the particle detector; and determining through which sampling inlet any particles entered the particle detection system.
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公开(公告)号：AU2010254595A1
公开(公告)日：2011-01-13
申请号：AU2010254595
申请日：2010-12-06
Applicant: XTRALIS TECHNOLOGIES LTD
Inventor： ALEXANDER BRIAN , BOETTGER KARL , KNOX RON , MEIKLE PETER
IPC: 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.
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公开(公告)号：HK1213630A1
公开(公告)日：2016-07-08
申请号：HK15109128
申请日：2015-09-17
Applicant: XTRALIS TECHNOLOGIES LTD
Inventor： AJAY KEMAL , KNOX RON , ALEXANDER BRIAN , COOPER KATE , SINGH RAJIV KUMAR , NORTH THOR , PATTINSON STEPHEN JAMES , MASSINGBERD-MUNDY PETER -
IPC: G01F20060101 , G01N20060101 , G08B20060101
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公开(公告)号：AU2013200353A1
公开(公告)日：2014-05-01
申请号：AU2013200353
申请日：2013-01-21
Applicant: XTRALIS TECHNOLOGIES LTD
Inventor： AJAY KEMAL , KNOX RON , ALEXANDER BRIAN , NORTH THOR , BOETTGER KARL , MUNDY PETER , SINGH RAJIV
Abstract: A method of determining at least one point of entry of smoke into a smoke detection system, the system having a sampling pipe network including at least one sampling pipe and a plurality of sampling inlets through which an air sample can enter the at least one sampling pipe of the 5 smoke detection system for analysis by a particle detector, said method including: determining a volume of sample air that has passed through at least part of the smoke detection system since a predetermined event or a value corresponding to said volume; and determining through which sampling inlet of the plurality of sampling inlets the smoke entered the smoke detection system based, at least in part, on the determined volume or value. Systems for implementing such a 0 method and related methods are also described. Doc. 2005127028 16 i 22 +- 21
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Patent Agency Ranking
公开(公告)号：CA2886675A1
公开(公告)日：2014-04-24
申请号：CA2886675
申请日：2013-10-16
Applicant: XTRALIS TECHNOLOGIES LTD
Inventor： AJAY KEMAL , KNOX RON , ALEXANDER BRIAN , BOETTGER KARL , SINGH RAJIV KUMAR , NORTH THOR , PATTINSON STEPHEN JAMES , MASSINGBERD-MUNDY PETER
Abstract: A method of determining at least one point of entry of smoke into a smoke detection system, the system having a sampling pipe network including at least one sampling pipe and a plurality of sampling inlets through which an air sample can enter the at least one sampling pipe of the smoke detection system for analysis by a particle detector, said method including: determining a volume of sample air that has passed through at least part of the smoke detection system since a predetermined event or a value corresponding to said volume; and determining through which sampling inlet of the plurality of sampling inlets the smoke entered the smoke detection system based, at least in part, on the determined volume or value. Systems for implementing such a method and related methods are also described.
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公开(公告)号：MY162159A
公开(公告)日：2017-05-31
申请号：MYPI2011000968
申请日：2009-09-04
Applicant: XTRALIS TECHNOLOGIES LTD
Inventor： ALEXANDER BRIAN , VAYEDA NITIN , AJAY KEMAL
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.
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公开(公告)号：CA2836811A1
公开(公告)日：2012-12-27
申请号：CA2836811
申请日：2012-06-21
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.
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公开(公告)号：CA2735715A1
公开(公告)日：2010-03-11
申请号：CA2735715
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.
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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.
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