Material analysis using reflected light
    5.
    发明授权
    Material analysis using reflected light 失效
    使用反射光进行材料分析

    公开(公告)号:US4629322A

    公开(公告)日:1986-12-16

    申请号:US665893

    申请日:1984-10-29

    申请人: John H. Pollard

    发明人: John H. Pollard

    IPC分类号: G01J3/28 G01J3/42

    摘要: An apparatus and method for determining the relative proportions of two eents of a ternary compound from light reflected off a sample of the compound. The light is varied in wavelength and a graph of reflectance vs wavelength is stored. For a given compound of general form A.sub.x B.sub.1-x C, x may be determined by converting the stored graph to a graph of reflectance vs photon energy of the light, determining the photon energy of the light for the longest wavelength peak on the converted graph, and computing x from the equation E.sub.1 =a+bx+cx.sup.2 wherein a, b, and c are predetermined constants, and E.sub.1 is the photon energy in electron volts of the peak of interest.

    摘要翻译: 用于确定三元化合物的两种元素与化合物样品反射的光的相对比例的装置和方法。 光在波长上变化,并且存储反射率与波长的曲线图。 对于一般形式的AxB1-xC的给定化合物,可以通过将存储的图转换成光的反射率与光子能量的曲线图,确定转换图上最长波长峰的光的光子能量来确定x,以及 从等式E1 = a + bx + cx2计算x,其中a,b和c是预定常数,E1是感兴趣峰的电子伏特中的光子能量。

    APPARATUS AND METHOD FOR SENSING PARAMETERS USING FIBER BRAGG GRATING (FBG) SENSOR AND COMPARATOR
    8.
    发明申请
    APPARATUS AND METHOD FOR SENSING PARAMETERS USING FIBER BRAGG GRATING (FBG) SENSOR AND COMPARATOR 有权
    使用光纤布拉格光栅(FBG)传感器和比较器传感参数的装置和方法

    公开(公告)号:US20160103017A1

    公开(公告)日:2016-04-14

    申请号:US14513458

    申请日:2014-10-14

    申请人: Henry H. Hung

    发明人: Henry H. Hung

    摘要: Various implementations of an apparatus for sensing one or more parameters are disclosed herein. The apparatus includes a sweeping wavelength laser configured to generate a sweeping wavelength optical signal; an optical fiber including a Fiber Bragg Grating (FBG) structure configured to sense a parameter, wherein the optical fiber is configured to receive the sweeping wavelength optical signal, wherein the FBG structure is configured to produce a reflected optical signal with a particular wavelength in response to the sweeping wavelength optical signal, and wherein the particular wavelength varies as a function of the parameter; a photo detector configured to generate an electrical signal based on the reflected optical signal; a comparator configured to generate a pulse based on a comparison of the electrical signal to a threshold; and a processor configured to generate an indication of the parameter based on the pulse. The comparator may be configured as a Schmitt trigger.

    摘要翻译: 本文公开了用于感测一个或多个参数的装置的各种实施方式。 该装置包括:扫描波长激光器,被配置为产生扫描波长光信号; 包括被配置为感测参数的光纤布拉格光栅(FBG)结构的光纤,其中所述光纤被配置为接收扫描波长光信号,其中所述FBG结构被配置为产生具有特定波长的反射光信号以作出响应 到所述扫描波长光信号,并且其中所述特定波长作为所述参数的函数而变化; 光检测器,被配置为基于所反射的光信号产生电信号; 比较器,被配置为基于电信号与阈值的比较来产生脉冲; 以及处理器,被配置为基于所述脉冲生成所述参数的指示。 比较器可以配置为施密特触发器。