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1. 发明授权

US6133573A Method and device for determining a gas volume concentration 失效
标题翻译：用于确定气体体积浓度的方法和装置
公开(公告)号：US6133573A
公开(公告)日：2000-10-17
申请号：US12086
申请日：1998-01-22
申请人： Alain Bazin , Fran.cedilla.ois Grasdepot , Juan Pedro Silveira
发明人： Alain Bazin , Fran.cedilla.ois Grasdepot , Juan Pedro Silveira
IPC分类号： G01N21/27 , G01N21/35 , G01N21/31
CPC分类号： G01N21/274 , G01N21/3504
摘要： A gas volume concentration is determined. An electromagnetic radiation is emitted (state 1) through the gas volume. The radiation is filtered by temporally modulating the spectral transmission of said filter so as to obtain a temporal modulation of the energy of the radiation transmitted by the gas volume and this filter. This temporally modulated energy is detected and a signal E is extracted from it, the signal particularly depending on the concentration of the gas. The component Eac(1) of the time-variable signal and the component Edc(1) of the signal, which is not a time-variable signal are isolated. A radiation stops is emitted (state 0), and the component Eac(0) and the component Edc(0) of the signal received by the detector are isolated. The terms Eac(1)-Eac(0) and Edc(1)-Edc(0) are calculated, and the ratio (Eac(1)-Eac(0))/(Edc(1)-Edc(0)) is formed which then solely depends on the gas concentration c. From this, c is deduced.
摘要翻译：确定气体体积浓度。通过气体体积发出电磁辐射（状态1）。通过对所述滤波器的频谱传输进行时间调制来对辐射进行滤波，以获得由气体体积和该滤波器传输的辐射的能量的时间调制。该时间调制能量被检测并且从其中提取信号E，该信号特别取决于气体的浓度。时间变量信号的分量Eac（1）和不是时间变量信号的信号的分量Edc（1）被隔离。发射辐射停止（状态0），并且分离由检测器接收的信号的分量Eac（0）和分量Edc（0）。计算项目Eac（1）-Eac（0）和Edc（1）-Edc（0），比率（Eac（1）-Eac（0））/（Edc（1）-Edc（0））形成，其仅仅取决于气体浓度c。从此，推导出c。

2. 发明授权

US5920391A Tunable Fabry-Perot filter for determining gas concentration 失效
标题翻译：用于确定气体浓度的可调式法布里 - 珀罗滤波器
公开(公告)号：US5920391A
公开(公告)日：1999-07-06
申请号：US064286
申请日：1998-04-22
申请人： Fran.cedilla.ois Grasdepot , Jan Suski
发明人： Fran.cedilla.ois Grasdepot , Jan Suski
IPC分类号： G01J3/26 , G01N21/35 , G02B26/00 , G01B9/02
CPC分类号： G01J3/26 , G01N21/3504 , G02B26/001
摘要： The invention provides a filter of the Fabry-Perot interferometer type for electromagnetic radiation having spectral density that is modified by a gas. The filter comprises a body which is transparent to said electromagnetic radiation, at least in its part through which the radiation passes. Said part comprises at least two portions possessing two facing surfaces that are mutually parallel and substantially plane. A "first" one of said portions is movable in a direction that is substantially perpendicular to the pair of facing surfaces. The filter further comprises: means for moving said facing surfaces between two extreme positions under the action of an electromagnetic field, and means for limiting adhesion between said surfaces in at least one of said positions in which said surfaces are at a distance apart which is small compared with the mean wavelength of the radiation passing through them.
摘要翻译：本发明提供了一种用于电磁辐射的法布里 - 珀罗干涉仪类型的滤波器，其具有由气体改变的光谱密度。该过滤器包括对所述电磁辐射透明的至少其辐射通过的部分的本体。所述部分包括具有彼此平行且基本平面的两个相对表面的至少两个部分。所述部分中的“第一”一个可在基本上垂直于该对相对表面的方向上移动。滤波器还包括：用于在电磁场的作用下在两个极限位置之间移动所述相对表面的装置，以及用于限制所述表面中的至少一个位置之间的所述表面之间的粘附的装置，其中所述表面的距离相差很小与通过它们的辐射的平均波长相比。

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