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。