公开(公告)号：AU2012349828A1

公开(公告)日：2014-07-24

申请号：AU2012349828

申请日：2012-12-05

Applicant: GASSECURE AS

Inventor： SAGBERG HAKON ,  GRENNBERG FISMEN BRITTA ,  HESTNES BAKKE KARI ANNE ,  TSCHUDI JON ,  JOHANSEN IB-RUNE

IPC: G01N21/35

Abstract: A gas sensor for measuring concentration of a predetermined gas comprises a light source(2)arranged to emit pulses of light, a measurement volume(10), a detector(4)arranged to receive light that has passed through the measurement volume(10), and an adaptable filter(6)disposed between the light source(2) and the detector(4).The gas sensor has a measurement state in which it passes at least one wavelength band which is absorbed by the gas and a reference state in which said wavelength band is attenuated relative to the measurement state. The adaptable filter(6) is arranged to change between one of said measurement state and said reference state to the other at least once during each pulse.

公开(公告)号：CA2858007C

公开(公告)日：2020-08-18

申请号：CA2858007

申请日：2012-12-05

Applicant: GASSECURE AS

Inventor： SAGBERG HAKON ,  GRENNBERG FISMEN BRITTA ,  HESTNES BAKKE KARI ANNE ,  TSCHUDI JON ,  JOHANSEN IB-RUNE ,  SANDVEN KNUT BAEROE

IPC: G01N21/35

Abstract: In the technical field of gas sensors, gas concentration may be determined by passing light through a gas and measuring the relative attenuation of a reference wavelength band and a measurement wavelength band of the light. To obtain reliable measurements, it is necessary to wait for the light source to stabilize after it has been turned on due to drift and/or low-frequency noise present during warm-up of the light source. The present invention provides a gas sensor comprising a light source (2) arranged to emit pulses of light, and an adaptable filter (6) arranged to change between one of a measurement state and a reference state to the other at least once during each pulse. Switching at least once each pulse allows drift or low-frequency noise to be filtered out, allowing operation of the gas sensor during the light source warm-up period, thereby making the gas sensor more energy efficient.

公开(公告)号：SG11201402912YA

公开(公告)日：2014-07-30

申请号：SG11201402912Y

申请日：2012-12-05

Applicant: GASSECURE AS

Inventor： SAGBERG HÅKON ,  GRENNBERG FISMEN BRITTA ,  HESTNES BAKKE KARI ANNE ,  TSCHUDI JON ,  JOHANSEN IB-RUNE ,  SANDVEN KNUT BÆRØE

IPC: G01N21/35

Abstract: A gas sensor for measuring concentration of a predetermined gas includes a light source (2) arranged to emit pulses of light, a measurement volume (10), a detector (4) arranged to receive light that has passed through the measurement volume (10), and an adaptable filter (6) disposed between the light source (2) and the detector (4). The gas sensor has a measurement state in which it passes at least one wavelength band which is absorbed by the gas and a reference state in which said wavelength band is attenuated relative to the measurement state. A controller is connected to each of the light source, the detector and the adaptable filter to change the adaptable filter between one of said measurement state and said reference state to the other at least once during a gas sensor operation period.

公开(公告)号：GB2497296A

公开(公告)日：2013-06-12

申请号：GB201120871

申请日：2011-12-05

Applicant: GASSECURE AS

Inventor： SAGBERG HA KON ,  FISMEN BRITTA GRENNBERG ,  BAKKE KARI ANNE HESTNES ,  JOHANSEN IB-RUNE ,  TSCHUDI JON

IPC: G01N21/35 ,  G01N21/61

Abstract: A gas sensor for measuring concentration of a predetermined gas comprises a light source 2 arranged to emit pulses of light, a measurement volume 10, a detector 4 arranged to receive light that has passed through the measurement volume, and an adaptable filter 6 disposed between the light source and the detector. The gas sensor has a measurement state in which it passes at least one wavelength band which is absorbed by the gas and a reference state in which said wavelength band is attenuated relative to the measurement state. The adaptable filter is arranged to change between one of said measurement state and said reference state to the other at least once during each pulse.

公开(公告)号：MX2014006467A

公开(公告)日：2015-03-11

申请号：MX2014006467

申请日：2012-12-05

Applicant: GASSECURE AS

Inventor： SAGBERG HÅKON ,  FISMEN BRITTA GRENNBERG ,  BAKKE KARI ANNE HESTNES ,  TSCHUDI JON ,  JOHANSEN IB-RUNE ,  SANDVEN KNUT BAERØE

IPC: G01N21/35

Abstract: Un sensor de gas para medir la concentración de un gas predeterminado comprende una fuente de luz (2) dispuesta para emitir pulsos de luz, un volumen de medición (10), un detector (4) dispuesto para recibir luz que ha pasado a través del volumen de medición (10), y un filtro adaptable (6) dispuesto entre la fuente de luz (2) y el detector (4) El sensor de gas tiene un estado de medición en el que pasa por lo menos una banda de longitud de onda que es absorbida por el gas y un estado de referencia en el que la banda de longitud de onda es atenuada en relación con el estado de medición. El filtro adaptable (6) está dispuesto para cambiar entre uno del estado de medición y el estado de referencia al otro por lo menos una vez durante cada pulso.

公开(公告)号：CA2858007A1

公开(公告)日：2013-06-13

申请号：CA2858007

申请日：2012-12-05

Applicant: GASSECURE AS

Inventor： SAGBERG HAKON ,  GRENNBERG FISMEN BRITTA ,  HESTNES BAKKE KARI ANNE ,  TSCHUDI JON ,  JOHANSEN IB-RUNE ,  SANDVEN KNUT BAEROE

IPC: G01N21/35

Abstract: A gas sensor for measuring concentration of a predetermined gas comprises a light source(2)arranged to emit pulses of light, a measurement volume(10), a detector(4)arranged to receive light that has passed through the measurement volume(10), and an adaptable filter(6)disposed between the light source(2) and the detector(4).The gas sensor has a measurement state in which it passes at least one wavelength band which is absorbed by the gas and a reference state in which said wavelength band is attenuated relative to the measurement state. The adaptable filter(6) is arranged to change between one of said measurement state and said reference state to the other at least once during each pulse.