Calorimetric fiber optic chemical sensor
    251.
    发明授权
    Calorimetric fiber optic chemical sensor 失效
    量热光纤化学传感器

    公开(公告)号:US5157457A

    公开(公告)日:1992-10-20

    申请号:US592501

    申请日:1990-10-03

    Inventor: Henry F. Taylor

    Abstract: The present invention is directed to a sensor which utilizes an optical fiber interferometer to detect the absorption of a modulated laser beam by a particular chemical species. In particular, one embodiment of the present invention comprises a fiber optic system in which light from a continuously operating laser is modulated prior to passing through a region containing a chemical species of interest. Absorption of the light from the laser causes heating of the chemical species which, in turn, emits thermal energy that is transferred to an optical fiber that is situated in close proximity to the region in which the light is absorbed. In turn, the increase of the temperature of the optical fiber results in a change in the fiber's refractive index, thereby resulting in a change in the transmittance of said interferometer. The change in transmittance of the fiber is converted into an electrical signal in a photodetector. Thereafter, the modulated signal from the photodetector is recovered by phase-sensitive detection, using a lock-in amplifier. In this fashion, the amplitude of the output signal from the amplifier is proportional to the amount of light absorbed by the chemical species of interest. The concentration of this chemical species may thus be determined.

    Abstract translation: 本发明涉及一种利用光纤干涉仪来检测特定化学物质对被调制的激光束的吸收的传感器。 特别地,本发明的一个实施例包括光纤系统,其中来自连续操作的激光的光在通过包含感兴趣的化学物质的区域之前被调制。 来自激光的光的吸收导致化学物质的加热,其进而发射热能,其转移到位于光吸收区域附近的光纤。 反过来,光纤的温度升高导致纤维折射率的变化,从而导致所述干涉仪的透射率的变化。 在光检测器中,光纤的透射率的变化被转换为电信号。 此后,使用锁定放大器,通过相敏检测来恢复来自光电检测器的调制信号。 以这种方式,来自放大器的输出信号的幅度与感兴趣的化学物质所吸收的光量成比例。 因此可以确定该化学物质的浓度。

    Multichannel optical sensing device
    252.
    发明授权
    Multichannel optical sensing device 失效
    多通道光学感测装置

    公开(公告)号:US4915500A

    公开(公告)日:1990-04-10

    申请号:US766168

    申请日:1985-08-16

    Abstract: A multichannel optical sensing device is disclosed, for measuring the outr sky luminance or illuminance or the luminance or illuminance distribution in a room, comprising a plurality of light receptors, an optical shutter matrix including a plurality of liquid crystal optical shutter elements operable by electrical control signals between light transmitting and light stopping conditions, fiber optic elements connected between the receptors and the shutter elements, a microprocessor based programmable control unit for selectively supplying control signals to the optical shutter elements in a programmable sequence, a photodetector including an optical integrating spherical chamber having an input port for receiving the light from the shutter matrix and at least one detector element in the spherical chamber for producing output signals corresponding to the light, and output units for utilizing the output signals including a storage unit having a control connection to the microprocessor based programmable control unit for storing the output signals under the sequence control of the programmable control unit.

    Abstract translation: 公开了一种多通道光学感测装置,用于测量房间中的室外天空亮度或照度或亮度或照度分布,包括多个光接收器,包括可通过电控制操作的多个液晶光学快门元件的光学快门矩阵 在光传输和光停止条件之间的信号,连接在接收器和快门元件之间的光纤元件,基于微处理器的可编程控制单元,用于以可编程序顺序向光学快门元件选择性地提供控制信号;光电检测器,包括光学积分球形腔 具有用于接收来自快门矩阵的光的输入端口和用于产生对应于光的输出信号的球形室中的至少一个检测器元件,以及用于利用包括具有到微处理器的控制连接的存储单元的输出信号的输出单元 基于可编程控制单元,用于在可编程控制单元的序列控制下存储输出信号。

    System for sensing ions in aqueous solution
    253.
    发明授权
    System for sensing ions in aqueous solution 失效
    用于感测水溶液中离子的系统

    公开(公告)号:US4851665A

    公开(公告)日:1989-07-25

    申请号:US195406

    申请日:1988-05-16

    Abstract: The system for sensing ions in aqueous solution such as an electroplating bath includes a light source (18) which delivers light including a selected wavelength through a series of optical fibers (20, 24, 26, 32) to probe (14). The probe is partially immersed in the solution (12) and the light is delivered through the solution in the space (94) between prisms (82, 92). The return light is conducted by optical fibers (32,38) to detector or opto-electronic transducer (44). A portion of the original light is diverted by splitter (22) through fiber (42) to opto-electronic transducer (46) so that a comparison of the signals determines the amount of light in selected wavelength which is absorbed in the solution due to ions thereon. The signal processing unit (40) is preferably enclosed in an electromagnetic protected area (16) to avoid the adverse EMI and corrosive atmosphere effects near the electroplating tank (10).

    Abstract translation: 用于感测诸如电镀浴的水溶液中的离子的系统包括光源(18),其将包括选定波长的光通过一系列光纤(20,24,26,32)传送到探针(14)。 探针被部分地浸入溶液(12)中,并且光通过棱镜(82,92)之间的空间(94)中的溶液被输送。 返回光由光纤(32,38)传送到检测器或光电换能器(44)。 原始光的一部分通过光纤(42)通过光纤(42)转移到光电换能器(46),使得信号的比较确定由于离子而在溶液中吸收的选定波长的光量 上。 信号处理单元(40)优选地包围在电磁保护区域(16)中,以避免电镀槽(10)附近的不利的EMI和腐蚀性气氛的影响。

    Method and apparatus for subsurface contaminant detection and measurement
    254.
    发明授权
    Method and apparatus for subsurface contaminant detection and measurement 失效
    用于地下污染物检测和测量的方法和装置

    公开(公告)号:US4782234A

    公开(公告)日:1988-11-01

    申请号:US737191

    申请日:1985-05-23

    Abstract: Subsurface contaminants are readily and inexpensively detected and measured by means of a test head positioned at the subsurface site and forming a protected test chamber for the liquids to be tested. The head encloses the end faces of fiber optic elements which carry radiation to the liquid sample from a test instrument located at the surface and which return radiation from the sample to the instrumentation. A connector positioned at the surface decouples the head from the instrumentation, so that the same instrumentation can service a larger number of test sites.

    Abstract translation: 地下污染物通过位于地下位置处的测试头容易且廉价地检测和测量,并形成待测试液体的受保护的测试室。 头部包围光纤元件的端面,其将位于表面的测试仪器携带放射性液体样品并将其从样品返回到仪器。 位于表面的连接器将头部与仪器分离,使得相同的仪器可以服务更多的测试位置。

    FLUID ANALYSIS
    257.
    发明申请
    FLUID ANALYSIS 审中-公开
    流体分析

    公开(公告)号:WO2013164468A1

    公开(公告)日:2013-11-07

    申请号:PCT/EP2013059295

    申请日:2013-05-03

    Abstract: The embodiments herein relate to a system (100) for analyzing a fluid (103). The system (100) comprises a light source (110) configured to emit light for transmission through a first optical transmission means (107a) to a measurement device (105). The measurement device (105) comprises at least a part of the fluid (103) and is configured to be illuminated by the emitted light. The system comprises a second optical transmission means (107b) configured to transmit shadowed or reflected light from the fluid (103) when the measurement device (105) is illuminated to an image capturing device. The image capturing device (113) is configured to capture an image of the fluid (103) in the measurement device (105) based on the transmitted information about the fluid (103). The light source (110) and the one or more image capturing device (113) are remotely arranged from the at least one measurement device (105).

    Abstract translation: 本文的实施例涉及用于分析流体(103)的系统(100)。 系统(100)包括被配置为发射光以通过第一光传输装置(107a)传输到测量装置(105)的光源(110)。 测量装置(105)包括流体(103)的至少一部分并被构造成被发射的光照亮。 该系统包括第二光传输装置(107b),其被配置为当测量装置(105)被照射到图像捕获装置时,从流体(103)传输阴影或反射的光。 图像捕获装置(113)被配置为基于所传送的关于流体的信息(103)来捕获测量装置(105)中的流体(103)的图像。 所述光源(110)和所述一个或多个图像捕获装置(113)从所述至少一个测量装置(105)远程布置。

    VORRICHTUNG ZUR BESTIMMUNG DER KONZENTRATION ZUMINDEST EINES GASES IN EINEM PROBENGASSTROM
    258.
    发明申请
    VORRICHTUNG ZUR BESTIMMUNG DER KONZENTRATION ZUMINDEST EINES GASES IN EINEM PROBENGASSTROM 审中-公开
    DEVICE至少气体确定浓度样气流量

    公开(公告)号:WO2013159986A1

    公开(公告)日:2013-10-31

    申请号:PCT/EP2013/054977

    申请日:2013-03-12

    Inventor: KREFT, Norbert

    Abstract: Es sind Vorrichtungen zur Bestimmung der Konzentration zumindest eines Gases in einem Probengasstrom mit einer Analysenkammer (10), in die der Probengasstrom und ein Reaktionsgasstrom einleitbar sind, einem Detektor (48), welcher die durch die Reaktion emittierte optische Strahlung misst und einem Verbindungskanal (22), über den die Analysenkammer (10) mit dem Detektor (48) verbunden ist, bekannt. Zur Steigerung der Effizienz und der Messgenauigkeit dieser Vorrichtungen sowie zur Vermeidung von Ablagerungen an den Wänden der Analysenkammer (10) wird vorgeschlagen, dass der Verbindungskanal (22) als Lichtleiter (26) ausgeführt ist, der sich von der Analysekammer ( 10) bis zum Detektor (48) erstreckt.

    Abstract translation: 有用于与成可被引入样品气体流和反应气体气流的分析腔室(10),检测器(48)确定至少一种气体的浓度在样品气体流,其测量由光辐射的反应和连接通道发射的光的设备(22 ),在其上的分析腔室(10)被连接到检测器(48)是已知的。 为了提高效率和这些装置的精度以及防止分析腔室的壁上的沉积物(10)中提出,连接通道(22)被设计为从分析室(10)延伸到所述检测器的光导体(26) (48)。

    CAPTEUR OPTIQUE D'ESPECES CHIMIQUES FONCTIONNANT DANS L'INFRAROUGE.
    259.
    发明申请
    CAPTEUR OPTIQUE D'ESPECES CHIMIQUES FONCTIONNANT DANS L'INFRAROUGE. 审中-公开
    化学物质红外线光电传感器

    公开(公告)号:WO2011042628A1

    公开(公告)日:2011-04-14

    申请号:PCT/FR2010/000679

    申请日:2010-10-08

    Abstract: Capteur optique d'espèces chimiques comportant : - une source fluorescente de rayonnement infrarouge incohérent (3), comprenant une matrice en verre de chalcogénure dopée par des ions de terre rare couplée ô une source de pompage par une première fibre optique (2); et - au moins un détecteur de rayonnement infrarouge (5) pourvu d'un dispositif de sélection spectrale (50) et agencé pour détecter le rayonnement émis par ladite source fluorescente et ayant traversé une zone de détection (6), ledit détecteur comprenant un élément fluorescent (510) formé par une matrice en verre de chalcogénure dopé par des ions de terre rare, couplée ô une deuxième source de pompage (530) par l'intermédiaire d'une deuxième fibre optique (520). Utilisation d'un tel capteur pour la détection différentielle d'une espèce chimique, et en particulier de CO2.

    Abstract translation: 本发明涉及一种化学物质光学传感器,包括:非相干红外线的荧光源(3),包括掺杂有稀土离子的硫族化物玻璃基质,并通过第一光纤(2)与泵浦源组合; 以及至少一个红外线检测器(5),设置有光谱选择装置(50)并设置为检测由所述荧光源发射并已通过检测区域(6)的射线,所述检测器包括荧光 由掺杂有稀土离子并通过第二光纤(520)与第二泵浦源(530)组合的硫族化物玻璃基体形成的元件(510)。 这种传感器可用于差异检测化学物质,特别是二氧化碳。

    AN APPARATUS AND METHOD FOR DETECTING SURFACE DEFECTS ON A WORKPIECE SUCH AS A ROLLED/DRAWN METAL BAR
    260.
    发明申请
    AN APPARATUS AND METHOD FOR DETECTING SURFACE DEFECTS ON A WORKPIECE SUCH AS A ROLLED/DRAWN METAL BAR 审中-公开
    用于检测工件表面缺陷的装置和方法,如滚筒/拉丝金属棒

    公开(公告)号:WO2007016544A3

    公开(公告)日:2007-09-27

    申请号:PCT/US2006029884

    申请日:2006-07-31

    CPC classification number: G01N21/952 G01N2201/0826 G01N2201/084 H04N7/18

    Abstract: The present invention is directed to solving the problems associated with the detection of surface defects on metal bars as well as the problems associated with applying metal flat inspection systems to metal bars for non-destructive surface defects detection. A specially designed imaging system, which is comprised of a computing unit, line lights and high data rate line scan cameras, is developed for the aforementioned purpose. The target application is the metal bars (1) that have a circumference/cross-section-area ratio equal to or smaller than 4.25 when the cross section area is unity for the given shape, (2) whose cross-sections are round, oval, or in the shape of a polygon, and (3) are manufactured by mechanically cross-section reduction processes. The said metal can be steel, stainless steel, aluminum, copper, bronze, titanium, nickel, and so forth, and/or their alloys. The said metal bars can be at the temperature when they are being manufactured. A removable cassette includes various mirrors. A protection tube isolates the moving metal bar from the line light assembly and image acquisition camera. assembly and image acquisition camera. A contaminant reduction mechanism applies a vacuum to remove airborne contaminants.

    Abstract translation: 本发明旨在解决与检测金属棒表面缺陷相关的问题以及将金属平面检查系统应用于金属棒以用于非破坏性表面缺陷检测相关的问题。 为了上述目的开发了一种专门设计的成像系统,由计算单元,线路灯和高数据速率线扫描摄像机组成。 目标应用是当给定形状的横截面积为1时,具有等于或小于4.25的圆周/横截面积比的金属棒(1),(2)横截面为圆形,椭圆形 ,或多边形的形状,(3)通过机械截面缩小工艺制造。 所述金属可以是钢,不锈钢,铝,铜,青铜,钛,镍等,和/或它们的合金。 所述金属棒可以处于制造时的温度。 可拆卸的盒子包括各种镜子。 保护管将移动的金属条与线灯组件和图像采集相机隔离。 装配和图像采集相机。 污染物减少机制应用真空去除空气污染物。

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