公开(公告)号：CA2680354A1

公开(公告)日：2008-09-18

申请号：CA2680354

申请日：2008-03-07

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： AJAY KEMAL

IPC: G01N15/06 ,  G08B17/00 ,  G08B23/00

Abstract: An apparatus (10) for detecting particles in an airflow is disclosed. The apparatus can includes at least one light source (22, 24) for illuminating a one or more portions of the airflow, at least one photo-detector (30,32) p ositioned to detect light scattered from one or more illuminated volumes of the airflow. The least one light source (22, 24) and at least one photo dete ctor (30,32)are arranged such that a signal indicative of light scattered fr om a plurality of illuminated volumes (38,34) can be derived from the output of the at least one photo detector (30,32). The apparatus also includes a s ignal processing apparatus configured to process said signals indicative of light scattered from a plurality of illuminated volumes to determine whether particles have been detected in the airflow.

公开(公告)号：CA2623859A1

公开(公告)日：2006-05-18

申请号：CA2623859

申请日：2005-11-14

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： BOETTGER KARL ,  KNOX RON ,  AJAY KEMAL

IPC: G08B17/10 ,  G08B17/107

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：MY172116A

公开(公告)日：2019-11-14

申请号：MYPI2012003962

申请日：2011-03-04

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： VAYEDA NITIN ,  AJAY KEMAL

IPC: G01N15/06 ,  B01D46/00 ,  G08B17/10

Abstract: There is describes a filter arrangement (10) for a particle detector (12) for detecting particles in an environment. The particle detector (12) can include one or more sensors (30) for analysing fluid in a detection region to produce sensor output. The filter arrangement (30) includes structure defining flow paths, for conveying fluid from the environment towards the detection region, including a first flow path (22), which includes a filter (26), and a second flow path (24) bypassing the filter (10). There is also provided a mechanism (120B) for controlling relative flow rates of fluid through the first flow path (22) and the second flow path (24) and a controller (32) 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.

公开(公告)号：CA2791529C

公开(公告)日：2019-04-30

申请号：CA2791529

申请日：2011-03-04

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： AJAY KEMAL ,  VAYEDA NITIN

IPC: G01N15/06 ,  B01D46/00 ,  G01N15/00 ,  G08B17/113

Abstract: There is describes a filter arrangement (10) for a particle detector (12) for detecting particles in an environment. The particle detector (12) can include one or more sensors (30) for analysing fluid in a detection region to produce sensor output. The filter arrangement (30) includes structure defining flow paths, for conveying fluid from the environment towards the detection region, including a first flow path (22), which includes a filter(26), and a second flow path (24) bypassing the filter(10). There is also provided a mechanism (120B) for controlling relative flow rates of fluid through the first flow path (22) and the second flow path (24) and a controller (32) 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.

公开(公告)号：MY158884A

公开(公告)日：2016-11-30

申请号：MYPI2011005239

申请日：2010-05-03

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  BOETTGER KARL ,  AJAY KEMAL

IPC: G08B17/107 ,  G01N15/02 ,  G01N15/14 ,  G01N21/00 ,  G01N21/53

Abstract: A BEAM DETECTOR (10) INCLUDING A LIGHT SOURCE (32, 4500, 4740, 4958), 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 (42) 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 WAVELENGTH BANDS ARE SUBSTANTIALLY EQUAL AND ARE DIFFERENT TO THE THIRD WAVELENGTH BAND.

公开(公告)号：HK1208265A1

公开(公告)日：2016-02-26

申请号：HK15108833

申请日：2015-09-10

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： ALEXANDER BRIAN ,  VAYEDA NITIN ,  AJAY KEMAL

IPC: G01N20060101 ,  G08B20060101

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：AU2016200388A1

公开(公告)日：2016-02-11

申请号：AU2016200388

申请日：2016-01-22

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： ALEXANDER BRIAN ,  AJAY KEMAL

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 5 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 10 second signals.

公开(公告)号：AU2015224408A1

公开(公告)日：2015-09-24

申请号：AU2015224408

申请日：2015-09-08

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 5 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：CA2623859C

公开(公告)日：2015-05-26

申请号：CA2623859

申请日：2005-11-14

Applicant: XTRALIS TECHNOLOGIES LTD

Inventor： KNOX RON ,  BOETTGER KARL ,  AJAY KEMAL

IPC: G08B17/10 ,  G08B17/107

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：AU2013271365A1

公开(公告)日：2015-01-22

申请号：AU2013271365

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.