Capacitive detector, method for manufacturing same, and device for measuring the integral
    6.
    发明授权
    Capacitive detector, method for manufacturing same, and device for measuring the integral 有权
    电容式检测器及其制造方法以及积分测量装置

    公开(公告)号:US08393209B2

    公开(公告)日:2013-03-12

    申请号:US12936153

    申请日:2009-03-12

    申请人: Pierre Thibault

    发明人: Pierre Thibault

    IPC分类号: G01F23/26 G08B21/00

    CPC分类号: G01F23/268

    摘要: Capacitive detector and measuring device integrating it; the detector including: a ribbon made of a dielectric material, first and second electrodes in the form of combs formed on a first surface of said ribbon and a third electrode formed on the other surface of said ribbon opposite said first and second electrodes; the thickness (e) of the dielectric ribbon is less than or equal to said determined period (λ) divided by four times PI, i.e.: λ/4π≧e; and the ratio resulting from the division, as numerator, of the capacitance (C) between two adjacent branches of said first and second electrodes in the presence of at least one fluid with a dielectric permittivity (∈f) and, as denominator, by the dielectric permittivity (∈f) of the fluid multiplied by the capacitance (Co) between the two adjacent branches of the first and second electrodes in the presence of the vacuum is greater than or equal to one, i.e.: C/(∈f*Co)≧1. Method for manufacturing a detector fulfilling the above conditions.

    摘要翻译: 整合电容检测器和测量装置; 所述检测器包括:由介电材料制成的带,形成在所述带的第一表面上的梳形形式的第一和第二电极以及形成在所述带的与所述第一和第二电极相对的另一表面上的第三电极; 电介质带的厚度(e)小于或等于所述确定的周期(λ)除以PI的四倍,即:λ/ 4&pgr;≥e; 以及在存在具有介电常数(εf)的至少一种流体的情况下,作为分子除以所述第一和第二电极的两个相邻分支之间的电容(C)所产生的比率,并且作为分母,由 在存在真空的情况下,流体的介电常数(εf)乘以第一和第二电极的两个相邻分支之间的电容(Co)大于或等于1,即:C /(∈f* Co )≧1。 制造满足上述条件的检测器的方法。

    Optical interferometric current sensor and method using a single mode
birefringent waveguide and a pseudo-depolarizer for measuring
electrical current
    10.
    发明授权
    Optical interferometric current sensor and method using a single mode birefringent waveguide and a pseudo-depolarizer for measuring electrical current 失效
    光干涉电流传感器和使用单模双折射波导和伪去极化器测量电流的方法

    公开(公告)号:US5587791A

    公开(公告)日:1996-12-24

    申请号:US313690

    申请日:1994-09-27

    IPC分类号: G01R15/24 G01B9/02 G02B6/00

    CPC分类号: G01R15/246

    摘要: The interferometric current sensor is for measuring an electrical current. It comprises a light source for generating a light beam; a single mode birefringent waveguide having a linear birefringence and a circular birefringence, the circular and linear birefringences having respectively given orders of magnitude, the order of magnitude of the circular birefringence being equal or higher than the order of magnitude of the linear birefringence, the waveguide having a first loop portion for encircling the electrical current; a beamsplitter having a first input port optically coupled to the light source, and second and third input/output ports optically coupled to ends of the waveguide for launching counter-propagating light beams into the respective ends of the waveguide and for receiving the counter-propagating light beams therefrom; and a pseudo-depolarizer optically coupled in series with the waveguide for converting each of the counter-propagating light beams into a predetermined ratio of useful counter-propagating light signals and useless counter-propagating light signals. It also comprises an optical detector optically coupled to the ends of the waveguide via the beamsplitter for detecting a light intensity, the light intensity is representative of the current.

    摘要翻译: 干涉电流传感器用于测量电流。 它包括用于产生光束的光源; 具有线性双折射和圆形双折射的单模双折射波导,圆形和线性双折射分别具有数量级,圆形双折射的数量级等于或高于线性双折射的数量级,波导 具有用于环绕电流的第一回路部分; 具有光耦合到光源的第一输入端口的分束器和光学耦合到波导的端部的第二和第三输入/输出端口,用于将反向传播的光束发射到波导的相应端部并且用于接收反向传播的 光束; 以及与波导串联光学耦合的伪去偏振器,用于将每个反向传播的光束转换成有效的反向传播光信号和无用的反向传播光信号的预定比例。 它还包括光学检测器,其通过分光器光学耦合到波导的端部,用于检测光强度,光强度代表电流。