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1. 发明申请

WO2011086394A1 GAS SENSOR WITH RADIATION GUIDE 审中-公开
标题翻译：气体传感器与辐射指南
公开(公告)号：WO2011086394A1
公开(公告)日：2011-07-21
申请号：PCT/GB2011/050077
申请日：2011-01-18
申请人： GAS SENSING SOLUTIONS LTD. , GIBSON, Desmond, Robert , MACGREGOR, Calum, John , WADDELL, Ewan, MacKinnon
发明人： GIBSON, Desmond, Robert , MACGREGOR, Calum, John , WADDELL, Ewan, MacKinnon
IPC分类号： G01N21/35 , G01N21/03
CPC分类号： G01N21/3504 , G01N21/031 , G01N2201/0636 , Y10T156/10
摘要： An optical absorption gas sensor includes a radiation source, detector and a radiation guide. The radiation source and detector are close together and in thermal communication. The radiation guide has a rectangular cross section and curves in a first sense, around an axis parallel to the major dimension of the rectangular cross section, and then in a second opposite sense, and again in the first sense. A relatively long path for radiation is provided in a compact device, without the attenuation of radiation which would occur if the radiation guide did not have a rectangular cross section and curved only around an axis parallel to the major dimension of the rectangular cross section. A reference measurement can be obtained by mounting a reference radiation source behind a translucent measurement radiation source and directing radiation from the reference radiation source through the measurement radiation source. Radiation from a reference radiation source may be directed around the measurement reference source. Measurement and reference signals can be obtained by using a light emitting diode to generate radiation which is detected by a photodiode, in a first operating mode, and driving the photodiode to generate radiation having a different emission spectrum while detecting the resulting radiation using the light emitting diode, in a second operating mode. An optical absorption gas sensor may be manufactured by abutting two or more L- shaped radiation guide portions to form a radiation guide. The radiation guide has an interior surface operable to reflect radiation emitted by the radiation source of the optical absorption gas sensor.
摘要翻译：光吸收气体传感器包括辐射源，检测器和辐射引导件。辐射源和检测器靠近在一起并在热通信。辐射引导件具有矩形横截面，并且在第一意义上围绕平行于矩形横截面的主要尺寸的轴线弯曲，然后以第二相反的意义，并且再次以第一意义弯曲。在紧凑的装置中提供了相对较长的辐射路径，而不会导致辐射的衰减，如果辐射导向器没有矩形横截面并且仅在平行于矩形横截面的主要尺寸的轴线上弯曲。可以通过将参考辐射源安装在半透明测量辐射源之后并且将来自参考辐射源的辐射引导通过测量辐射源来获得参考测量。来自参考辐射源的辐射可以围绕测量参考源引导。测量和参考信号可以通过使用发光二极管在第一操作模式中产生由光电二极管检测到的辐射并且驱动光电二极管以产生具有不同发射光谱的辐射，同时使用发光二极管，处于第二工作模式。光吸收气体传感器可以通过邻接两个或更多个L形辐射引导部分来形成辐射导向器来制造。辐射引导件具有可操作以反射由光吸收气体传感器的辐射源发射的辐射的内表面。

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