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    GAS SENSOR
    2.
    发明公开
    GAS SENSOR 有权
    气体传感器

    公开(公告)号：EP1782052A1

    公开(公告)日：2007-05-09

    申请号：EP05773022.8

    申请日：2005-08-12

    申请人： Anaxsys Technology Limited

    发明人： VARNEY, Mark, Sinclair ,  GARRETT, Michael, Ernest

    IPC分类号： G01N27/407 ,  G01N27/416 ,  G01N33/497 ,  G01N33/00

    CPC分类号： G01N27/4074 ,  G01N33/004 ,  G01N33/497

    摘要： A sensor for detecting a target substance, in particular carbon dioxide, in a gas stream comprises a sensing element (8) disposed to be exposed to the gas stream, the sensing element comprising a working electrode (12); a counter electrode (14); and a solid electrolyte precursor (16) extending between and in contact with the working electrode and the counter electrode; whereby the gas stream may be caused to impinge upon the solid electrolyte precursor such that water vapour in the gas stream at least partially hydrates the precursor to form an electrolyte in electrical contact with the working electrode and the counter electrode. A method of sensing a target substance in a gas stream comprises causing the gas stream comprising water vapour to impinge upon a solid electrolyte precursor; allowing the solid electrolyte precursor to at least partially hydrate, so as to form an electrolyte bridge beA sensor for detecting a target substance, in particular carbon dioxide, in a gas stream comprises a sensing element disposed to be exposed to the gas stream, the sensing element comprising a working electrode; a counter electrode; and a solid electrolyte precursor extending between and in contact with the working electrode and the counter electrode; whereby the gas stream may be caused to impinge upon the solid electrolyte precursor such that water vapour in the gas stream at least partially hydrates the precursor to form an electrolyte in electrical contact with the working electrode and the counter electrode. A method of sensing a target substance in a gas stream comprises causing the gas stream comprising water vapour to impinge upon a solid electrolyte precursor; allowing the solid electrolyte precursor to at least partially hydrate, so as to form an electrolyte bridge between a working electrode and a counter electrode; applying a electric potential across the working electrode and counter electrode; measuring the current flowing between the working electrode and counter electrode as a result of the applied potential; and determining from the measured current flow an indication of the concentration of the target substance. The sensor and method are particularly suitable for analyzing tidal carbon dioxide concentrations in the exhaled breath of a person.

    摘要翻译： 一种用于检测气流中的目标物质，特别是二氧化碳的传感器，包括设置成暴露于气流的传感元件（8），所述传感元件包括工作电极（12）; 一个反电极（14）; 以及在工作电极和反电极之间延伸并与工作电极和反电极接触的固体电解质前体（16） 由此可使气流撞击固体电解质前体，使得气流中的水蒸气至少部分地水合前体以形成与工作电极和反电极电接触的电解质。 感测气流中的目标物质的方法包括使包含水蒸气的气流撞击固体电解质前体; 允许固体电解质前体至少部分水合，以形成电解质电桥。用于检测气体流中的目标物质，特别是二氧化碳的传感器包括设置成暴露于气体流的感测元件，感测 元件，包括工作电极; 反电极; 以及在工作电极和反电极之间延伸并与工作电极和反电极接触的固体电解质前体; 由此可使气流撞击固体电解质前体，使得气流中的水蒸气至少部分地水合前体以形成与工作电极和反电极电接触的电解质。 感测气流中的目标物质的方法包括使包含水蒸气的气流撞击固体电解质前体; 使固体电解质前体至少部分水合，从而在工作电极和反电极之间形成电解质桥; 在工作电极和反电极之间施加电势; 测量由于施加的电位而在工作电极和反电极之间流动的电流; 并根据测量的电流确定目标物质浓度的指示。 该传感器和方法特别适用于分析人呼出气中的潮气二氧化碳浓度。

    GAS SENSOR
    3.
    发明公开
    GAS SENSOR 审中-公开
    气体传感器

    公开(公告)号：EP1934589A2

    公开(公告)日：2008-06-25

    申请号：EP06779444.6

    申请日：2006-09-15

    申请人： Anaxsys Technology Limited

    发明人： VARNEY, Mark, Sinclair ,  GARRETT, Michael ,  LINDSELL, Alexandra

    IPC分类号： G01N27/12 ,  G01N33/497 ,  A61B5/097

    CPC分类号： A61B5/083 ,  A61B5/097 ,  G01N27/12

    摘要： A sensor (140) for detecting a target component in a gas stream comprises a first electrode (144) ; a second electrode (146) ; an active substrate (148) extending between the first and second electrodes, the active substrate being selective to the target component, such that the presence of the target component varies the electrical conductivity of the path between the first and second electrodes. The active substrate preferably comprises a zeolite, in particular zeolite 4A or 13X. A method of detecting a target component in a gas stream comprises contacting the gas stream with an active substrate extending between first and second electrodes; determining the variation in the electrical conductivity of the path between the first and second electrodes; and providing an indication of the presence of the target component in the gas stream. The method is particularly suitable for analyzing the carbon dioxide content of breath exhaled by a subject in the assessment of respiratory function.

    摘要翻译： 用于检测气流中的目标成分的传感器（140）包括第一电极（144）;第二电极 第二电极（146）; 在所述第一和第二电极之间延伸的有源衬底（148），所述有源衬底对所述目标部件有选择性，使得所述目标部件的存在改变所述第一和第二电极之间的所述路径的电导率。 活性基质优选包含沸石，特别是沸石4A或13X。 检测气流中的目标组分的方法包括使气流与在第一和第二电极之间延伸的活性基底接触; 确定第一和第二电极之间的路径的电导率的变化; 并提供气流中目标组分存在的指示。 该方法特别适用于分析呼吸功能评估中受试者呼出的呼气的二氧化碳含量。