公开(公告)号：US20180217055A1

公开(公告)日：2018-08-02

申请号：US15926574

申请日：2018-03-20

Applicant: GasSecure AS

Inventor： Håkon Sagberg

IPC: G01N21/3504 ,  G01N33/00 ,  G01N21/59 ,  G01N21/31

CPC classification number: G01N21/3504 ,  G01N21/59 ,  G01N33/0062 ,  G01N2021/3188 ,  G01N2033/0068

Abstract: A gas sensor is used for determining a concentration of a predetermined gas in a measurement volume. The gas sensor comprises a light source and a detector arranged to receive light that has passed through the measurement volume. During a first measurement period, the detector is used to make a first measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The first measurement is compared to a predetermined threshold value. If the threshold is crossed, during a second measurement period the detector is used to make a second measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The concentration of said gas in said measurement volume is calculated using the first and/or second measurement.

公开(公告)号：US09952143B2

公开(公告)日：2018-04-24

申请号：US14362945

申请日：2012-12-05

Applicant: GasSecure AS

Inventor： Håkon Sagberg

IPC: G01N21/35 ,  G01N21/59 ,  G01N33/00 ,  G01N21/3504 ,  G01N21/31

CPC classification number: G01N21/3504 ,  G01N21/59 ,  G01N33/0062 ,  G01N2021/3188 ,  G01N2033/0068

Abstract: A gas sensor is used for determining a concentration of a predetermined gas in a measurement volume. The gas sensor comprises a light source and a detector arranged to receive light that has passed through the measurement volume. During a first measurement period, the detector is used to make a first measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The first measurement is compared to a predetermined threshold value. If the threshold is crossed, during a second measurement period the detector is used to make a second measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The concentration of said gas in said measurement volume is calculated using the first and/or second measurement.

公开(公告)号：US20140232555A1

公开(公告)日：2014-08-21

申请号：US14128788

申请日：2012-06-13

Applicant: GasSecure AS

Inventor： Niels Aakvaag ,  Knut Sandven

IPC: H04W52/02 ,  H04W4/00

CPC classification number: H04W52/0209 ,  H04W4/38 ,  H04W4/70 ,  H04W84/18 ,  Y02D70/00

Abstract: A wireless sensor network comprises at least one sensor unit which comprises a sensor for sensing a parameter and at least one interrogating node. The interrogating node is arranged to transmit an interrogation message periodically to said sensor unit and to receive a reply message from said sensor unit. The sensor unit is arranged to transmit said reply message after a predetermined deliberate delay unless the sensor unit determines that an alarm condition has been met, in which case the sensor unit is arranged to transmit said reply message before the end of the deliberate delay.

Abstract translation: 无线传感器网络包括至少一个传感器单元，其包括用于感测参数的传感器和至少一个询问节点。 询问节点被布置成周期性地向所述传感器单元发送询问消息，并从所述传感器单元接收回复消息。 传感器单元被布置成在预定的故意延迟之后发送所述应答消息，除非传感器单元确定已经满足报警条件，在这种情况下，传感器单元被布置成在故意延迟结束之前发送所述回复消息。

公开(公告)号：US20210164895A1

公开(公告)日：2021-06-03

申请号：US17119472

申请日：2020-12-11

Applicant: GasSecure AS

Inventor： Håkon SAGBERG ,  Britta GRENNBERG FISMEN ,  Kari Anne HESTNES BAKKE ,  Jon TSCHUDI ,  Ib-Rune JOHANSEN ,  Knut Baeroe SANDVEN

IPC: G01N21/3504 ,  G01N21/31 ,  G01R27/26

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：US10508988B2

公开(公告)日：2019-12-17

申请号：US15926574

申请日：2018-03-20

Applicant: GasSecure AS

Inventor： Håkon Sagberg

IPC: G01N21/31 ,  G01N21/3504 ,  G01N21/59 ,  G01N33/00

Abstract: A gas sensor is used for determining a concentration of a predetermined gas in a measurement volume. The gas sensor comprises a light source and a detector arranged to receive light that has passed through the measurement volume. During a first measurement period, the detector is used to make a first measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The first measurement is compared to a predetermined threshold value. If the threshold is crossed, during a second measurement period the detector is used to make a second measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The concentration of said gas in said measurement volume is calculated using the first and/or second measurement.

公开(公告)号：US10481080B2

公开(公告)日：2019-11-19

申请号：US15737243

申请日：2016-06-16

Applicant: GASSECURE AS

Inventor： Lars Borgen ,  Britta Fismen ,  Thor Christian Hobæk ,  Håkon Sagberg

IPC: G01N21/15 ,  G01N21/3504

Abstract: A gas sensing apparatus (48) comprises a gas sensor arranged to use light to sense presence of a gas; an optical element (12, 40) arranged so that said light impinges thereon; and a thermoelectric heat pump (2, 24) having a cold side (6, 36) and a hot side (8, 34). The thermoelectric heat pump (2, 24) is configured to transfer heat energy from said cold side (6, 36) to said hot side (8, 34) in response to a supply of electrical energy provided to the thermoelectric heat pump (2, 24). The hot side (8, 34) of the thermoelectric heat pump (2, 24) is in thermal contact with the optical element (12, 40).

公开(公告)号：US20180202920A1

公开(公告)日：2018-07-19

申请号：US15737243

申请日：2016-06-16

Applicant: GASSECURE AS

Inventor： Lars BORGEN ,  Britta FISMEN ,  Thor Christian HOBÆK ,  Håkon SAGBERG

IPC: G01N21/15 ,  G01N21/3504

Abstract: A gas sensing apparatus (48) comprises a gas sensor arranged to use light to sense presence of a gas; an optical element (12, 40) arranged so that said light impinges thereon; and a thermoelectric heat pump (2, 24) having a cold side (6, 36) and a hot side (8, 34). The thermoelectric heat pump (2, 24) is configured to transfer heat energy from said cold side (6, 36) to said hot side (8, 34) in response to a supply of electrical energy provided to the thermoelectric heat pump (2, 24). The hot side (8, 34) of the thermoelectric heat pump (2, 24) is in thermal contact with the optical element (12, 40).

公开(公告)号：US20150123000A1

公开(公告)日：2015-05-07

申请号：US14362944

申请日：2012-12-05

Applicant: GasSecure AS

Inventor： Håkon Sagberg ,  Britta Grennberg Fismen ,  Kari Anne Hestnes Bakke ,  Jon Tschudi ,  Ib-Rune Johansen ,  Knut Baeroe Sandven

IPC: G01N21/3504 ,  G01R27/26 ,  G01N21/31

CPC classification number: G01N21/3504 ,  G01N21/314 ,  G01N2021/317 ,  G01N2021/3513 ,  G01N2201/061 ,  G01N2201/0693 ,  G01N2201/0696 ,  G01N2201/128 ,  G01R27/2605

Abstract: A gas sensor for measuring concentration of a predetermined gas comprises a light source arranged to emit pulses of light, a measurement volume, a detector arranged to receive light that has passed through the measurement volume, and an adaptable filter 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.

Abstract translation: 用于测量预定气体浓度的气体传感器包括布置成发射脉冲的光源，测量体积，被布置成接收已经通过测量体积的光的检测器，以及设置在光源和 探测器。 气体传感器具有测量状态，其中它通过被气体吸收的至少一个波长带和相对于测量状态使所述波长带衰减的参考状态。 适应滤波器被布置成在每个脉冲期间至少一次地在所述测量状态和所述参考状态中的一个之间改变另一个。

公开(公告)号：US20140350870A1

公开(公告)日：2014-11-27

申请号：US14362945

申请日：2012-12-05

Applicant: GasSecure AS

Inventor： Håkon Sagberg

IPC: G01N21/35 ,  G01N33/00 ,  G01N21/59

CPC classification number: G01N21/3504 ,  G01N21/59 ,  G01N33/0062 ,  G01N2021/3188 ,  G01N2033/0068

Abstract: A gas sensor is used for determining a concentration of a predetermined gas in a measurement volume. The gas sensor comprises a light source and a detector arranged to receive light that has passed through the measurement volume. During a first measurement period, the detector is used to make a first measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The first measurement is compared to a predetermined threshold value. If the threshold is crossed, during a second measurement period the detector is used to make a second measurement of an amount of light received in at least one wavelength band which is absorbed by the gas. The concentration of said gas in said measurement volume is calculated using the first and/or second measurement.

Abstract translation: 气体传感器用于确定测量体积中预定气体的浓度。 气体传感器包括光源和布置成接收已经通过测量体积的光的检测器。 在第一测量周期期间，检测器用于对由气体吸收的至少一个波长带中接收的光量进行第一次测量。 将第一测量与预定阈值进行比较。 如果超过阈值，则在第二测量周期期间，检测器用于对由气体吸收的至少一个波长带中接收的光量进行第二次测量。 使用第一和/或第二测量来计算所述测量体积中的所述气体的浓度。