公开(公告)号：US20140375995A1

公开(公告)日：2014-12-25

申请号：US14307995

申请日：2014-06-18

Applicant: Rosemount Analytical Inc.

Inventor： Pawel Kluczynski

IPC: G01N21/27

CPC classification number: G01N21/27 ,  G01J3/0205 ,  G01J3/021 ,  G01J3/42 ,  G01J3/433 ,  G01J3/4338 ,  G01J2003/423 ,  G01N21/39

Abstract: A gas absorption spectroscopy system and method are provided. A sealed chamber is provided with a reference gas having a known moisture concentration. An illumination source is disposed in the sealed chamber and is configured to generate an illumination beam. A measurement cell is coupled to the sealed chamber and is configured for exposure to a gas sample such that illumination travelling through the measurement cell passes through the gas sample. A process window is disposed between the sealed chamber and the measurement cell. The process window is configured to receive the illumination beam from the illumination source and reflect a first portion of illumination while allowing a second portion of illumination to pass into the measurement cell. A reference detector is disposed to receive the first portion of illumination and provide a reference detector signal. A measurement detector is disposed to receive the second portion of illumination after the second portion of illumination has passed through the measurement cell and provide a measurement detector signal. A controller is coupled to the reference detector and the measurement detector and is configured to provide a compensated moisture output based on the reference detector signal and the measurement detector signal.

Abstract translation: 提供了一种气体吸收光谱系统和方法。 密封室设置有具有已知水分浓度的参考气体。 照明源设置在密封室中并且被配置为产生照明光束。 测量单元耦合到密封室并且被配置为暴露于气体样本，使得穿过测量单元的照明通过气体样本。 处理窗口设置在密封室和测量单元之间。 处理窗口被配置为从照明源接收照明光束并且反射照明的第一部分，同时允许第二部分照射进入测量单元。 设置参考检测器以接收照明的第一部分并提供参考检测器信号。 设置测量检测器以在第二部分照射已经通过测量单元之后接收第二部分照明并提供测量检测器信号。 控制器耦合到参考检测器和测量检测器，并且被配置为基于参考检测器信号和测量检测器信号来提供经补偿的湿度输出。

公开(公告)号：US20140336957A1

公开(公告)日：2014-11-13

申请号：US14367420

申请日：2012-12-19

Applicant: The Board of Trustees of the Leland Stanford Junior University

Inventor： Ronald K. Hanson ,  Jay B. Jeffries ,  Kai Sun ,  Ritobrata Sur ,  Xing Chao

IPC: G01N21/39 ,  G01N33/00 ,  G01J3/433

CPC classification number: G01N21/39 ,  G01J3/433 ,  G01J3/4338 ,  G01N33/0062 ,  G01N2201/12

Abstract: A method of calibration-free scanned-wavelength modulation spectroscopy (WMS) absorption sensing is provided by obtaining absorption lineshape measurements of a gas sample on a sensor using 1/-normalized WMS-2/j where an injection current to an injection current-tunable diode laser (TDL) is modulated at a frequency ̂ where a wavelength modulation and an intensity modulation of the TDL are simultaneously generated, extracting using a numerical lock-in program and a low-pass filter appropriate band-width WMS-

Abstract translation: 通过使用1 /正规化WMS-2 / j获得传感器上的气体样品的吸收线尺寸测量来提供无校准扫描波长调制光谱（WMS）吸收感测的方法，其中注入电流可调 二极管激光器（TDL）在同时产生TDL的波长调制和强度调制的频率下被调制，使用数字锁定程序和低通滤波器适当的带宽WMS-<< /（ n = 1,2，...）信号，其中WMS-<< /信号是f的谐波，根据WMS-<< /信号的比率确定气体样本的物理性质， 使用扫描波长WMS的吸收背景，以及使用至少两个谐波来确定非吸收损耗，其中在碰撞加宽已经混合了过渡线宽的环境中，从非吸收基线测量的需要中去除了测量结果，其中 无需了解过渡线宽的无校准WMS测量功能。

公开(公告)号：US20140300806A1

公开(公告)日：2014-10-09

申请号：US13548801

申请日：2012-07-13

Applicant: David B. Pollock ,  Patrick J. Reardon

Inventor： David B. Pollock ,  Patrick J. Reardon

IPC: H04N5/225

CPC classification number: H04N5/2254 ,  G01J3/0208 ,  G01J3/0262 ,  G01J3/2803 ,  G01J3/2823 ,  G01J3/433 ,  G01J3/447 ,  G02B26/0891 ,  G02B27/0018 ,  H04N5/23229 ,  H04N5/349

Abstract: A camera concurrently produces an orthographic map and map spectral content. illumination from an image passes through a phase modulator and the resulting rotating photo-flux phase is converted to an electrical signal by multiple adjacent sensors of detectors of array of detectors. The amount of unwanted illumination reaching the sensors is reduced by a set of baffles that shield and protect the transducers from unwanted out-of-field light and other light sources.

Abstract translation: 相机同时产生正交图并映射光谱内容。 来自图像的照明通过相位调制器，并且所得到的旋转光通量相位被检测器阵列的检测器的多个相邻传感器转换成电信号。 通过一组挡板来减少到达传感器的不需要的照明量，这些挡板可以保护和保护传感器免受不必要的场外光线和其他光源的影响。

公开(公告)号：US08823802B2

公开(公告)日：2014-09-02

申请号：US12898024

申请日：2010-10-05

Applicant: Michael Myrick ,  Heather Brooke ,  Megan Baranowski ,  Jessica McCutcheon ,  Stephen Morgan

Inventor： Michael Myrick ,  Heather Brooke ,  Megan Baranowski ,  Jessica McCutcheon ,  Stephen Morgan

IPC: H04N5/33 ,  G01J3/433 ,  G01N21/88 ,  G01N21/35

CPC classification number: G01J3/433 ,  G01N21/35 ,  G01N21/3563 ,  G01N21/3577 ,  G01N21/88 ,  H04N5/33

Abstract: A system and method for analyzing a sample is disclosed. At least a portion of the sample is illuminated with modulated light from a light source, such as an infrared light source. Infrared energy from the sample is monitored with an infrared detector as the sample is being illuminated with the modulated light. The AC response of the infrared energy is analyzed to determine at least one of emission data or reflection data about the sample. The emission data or the reflection data can be used to enhance chemical contrast between varying substances on the sample.

Abstract translation: 公开了一种用于分析样品的系统和方法。 样品的至少一部分用来自诸如红外光源的光源的调制光照射。 当样品被调制的光照射时，用红外检测器监测来自样品的红外能量。 分析红外能量的AC响应以确定关于样品的发射数据或反射数据中的至少一个。 发射数据或反射数据可用于增强样品上不同物质之间的化学对比度。

公开(公告)号：US08711360B2

公开(公告)日：2014-04-29

申请号：US13948753

申请日：2013-07-23

Applicant: Seiko Epson Corporation

Inventor： Tatsuaki Funamoto

IPC: G01B9/02 ,  G01J3/42

CPC classification number: G01J3/027 ,  G01J3/12 ,  G01J3/26 ,  G01J3/28 ,  G01J3/32 ,  G01J3/36 ,  G01J3/433 ,  G01J2003/1213 ,  G01N21/55 ,  G01N21/59

Abstract: A spectral measurement device includes: an optical band-pass filter section that has first to n-th wavelengths (n is an integer of 2 or more) having a predetermined wavelength width as a spectral band thereof; a correction operation section that corrects a reception signal based on an output optical signal from the optical band-pass filter section; and a signal processing section that executes predetermined signal processing based on the reception signal corrected by the correction operation section that corrects the reception signal based on the change in the spectral distribution of the reception signal.

Abstract translation: 光谱测量装置包括：具有预定波长宽度的第一至第n波长（n为2或更大的整数）作为其光谱带的光学带通滤波器部分; 校正操作部，其根据来自所述光学带通滤波器部的输出光信号校正接收信号; 以及信号处理部，其基于由校正操作部校正的接收信号，基于接收信号的频谱分布的变化来校正接收信号，执行预定的信号处理。

公开(公告)号：US20140067282A1

公开(公告)日：2014-03-06

申请号：US14013788

申请日：2013-08-29

Applicant: SICK AG

Inventor： Thomas BEYER ,  Julian EDLER

IPC: G01N21/25

CPC classification number: G01N21/255 ,  G01J3/28 ,  G01J3/433 ,  G01N21/274 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/399 ,  G01N2201/0691 ,  G01N2201/1211 ,  G01N2201/1215 ,  G01N2201/1218

Abstract: A method of determining a concentration of a gas in a sample and/or of the composition of a gas by means of a spectrometer includes measuring an absorption signal of the gas as a function of the wavelength. The wavelength substantially continuously runs through a wavelength range and is superimposed by a harmonic wavelength modulation, wherein the influence of the wavelength modulation on the absorption signal via the light source modulation properties and the detection properties of the spectrometer is dependent on the device properties of the respective spectrometer. The method includes converting the absorption signal into at least one first derivative signal; deriving a gas concentration measurement parameter from the first derivative signal; determining the concentration and/or composition of the gas from at least the gas concentration measurement parameter and from a calibration function compensating for influences of state variables of the gas and of the spectrometer properties.

Abstract translation: 通过光谱仪测定样品和/或气体组成中的气体的浓度的方法包括测量作为波长的函数的气体的吸收信号。 波长基本上连续地穿过波长范围并通过谐波波长调制叠加，其中波长调制对吸收信号的影响经由光源调制性质和光谱仪的检测特性取决于器件的性质 各自的光谱仪。 该方法包括将吸收信号转换成至少一个一阶导数信号; 从一阶导数信号导出气体浓度测量参数; 从至少气体浓度测量参数和补偿气体的状态变量和光谱仪性质的影响的校准函数确定气体的浓度和/或组成。

公开(公告)号：US20130321815A1

公开(公告)日：2013-12-05

申请号：US13488105

申请日：2012-06-04

Applicant: Fumiaki OTERA

Inventor： Fumiaki OTERA

IPC: G01N21/61

CPC classification number: G01N21/61 ,  G01J3/42 ,  G01J3/433 ,  G01J2003/4332 ,  G01N21/3504 ,  G01N21/39 ,  G01N2021/354

Abstract: If the specific gas concentration is relatively high, controller sets 0 as the modulation amplitude in a modulation amplitude controlling voltage generator for frequency modulation of laser light, controls a switching unit to select the output of a second ADC, and causes a computation unit to compute according to the direct absorption detection method to calculate the water molecule volume concentration. If the specific gas concentration is relatively low, the modulation amplitude is set to A, not 0, controls switching unit to select the output of a first ADC, which digitizes a synchronized detection signal, and causes the computation unit to compute according to the harmonic synchronous detection method to calculate the water molecule volume concentration. The concentration calculated using either of the methods is compared against a threshold value, and if decided that an accurate result cannot be obtained, the method is switched as the measurements are continuously executed.

Abstract translation: 如果特定气体浓度相对较高，则控制器将0设置为用于激光调制的调制幅度控制电压发生器中的调制幅度，控制切换单元选择第二ADC的输出，并使计算单元计算 根据直接吸收检测方法计算水分子体积浓度。 如果比气体浓度相对较低，则将调制幅度设定为A，而不是0，则控制切换单元选择第一ADC的输出，该数字化同步检测信号，并使计算单元根据谐波计算 同步检测方法计算水分子体积浓度。 将使用任一方法计算出的浓度与阈值进行比较，如果判断为无法获得准确的结果，则随着连续执行测量而切换该方法。

公开(公告)号：US08472022B2

公开(公告)日：2013-06-25

申请号：US12746398

申请日：2008-12-05

Applicant: Jong Hann Chow ,  Malcolm Bruce Gray ,  Ian Charles Murray Littler ,  David Ernest McClelland

Inventor： Jong Hann Chow ,  Malcolm Bruce Gray ,  Ian Charles Murray Littler ,  David Ernest McClelland

IPC: G01N21/00

CPC classification number: G01M11/005 ,  G01J3/433 ,  G01N21/39 ,  G01N2021/391 ,  H01S3/1392 ,  H01S3/1398

Abstract: A system and method for spectroscopic detection of loss in a resonator cavity is disclosed. The system can include a number of components. A tunable laser source can generate a laser beam. A frequency locking system can lock the frequency of the laser beam to a resonance of the resonator cavity or lock the length of the cavity to the frequency of the laser beam. The first modulation element can modulate the laser beam at a first modulation frequency to generate a modulated laser beam. The input coupler can direct the modulated laser beam into the resonator cavity. The first directing element can direct a first portion of light reflected from the input coupler to a first photodetector. The first demodulator can demodulate the first modulation signal to generate a first error signal which is a function of the loss in the resonator cavity.

Abstract translation: 公开了一种用于光谱检测谐振器腔中的损耗的系统和方法。 该系统可以包括多个组件。 可调激光源可以产生激光束。 频率锁定系统可以将激光束的频率锁定到谐振器腔的谐振或将腔的长度锁定到激光束的频率。 第一调制元件可以以第一调制频率调制激光束以产生调制的激光束。 输入耦合器可以将调制的激光束引导到谐振腔中。 第一引导元件可以将从输入耦合器反射的光的第一部分引导到第一光电检测器。 第一解调器可以解调第一调制信号以产生作为谐振器腔中的损耗的函数的第一误差信号。

公开(公告)号：US08290375B2

公开(公告)日：2012-10-16

申请号：US12127507

申请日：2008-05-27

Applicant: Bogdan Szafraniec ,  Douglas M. Baney

Inventor： Bogdan Szafraniec ,  Douglas M. Baney

IPC: H04B10/04

CPC classification number: G01J3/433 ,  G01J3/02 ,  G01J3/0218 ,  G01J2003/1265

Abstract: An optical spectrum analyzer and a method of spectrally analyzing an optical signal. The optical spectrum analyzer includes a wave shaper such as an optical modulator that shapes an optical signal, a dispersive element such as a dispersive fiber in which the shaped optical signal is dispersed, a detector that provides an output signal indicative of the dispersed shaped optical signal, and a signal processor that analyzes the output signal, for example by calculating a transform such as an inverse Fourier transform or a Fourier transform of the output signal, to provide a frequency spectrum of the optical signal.

Abstract translation: 光谱分析仪和光信号的光谱分析方法。 光谱分析仪包括诸如光调制器的波整形器，其形成光信号，分散元件如分散光纤，其中分布有成形光信号的检测器，提供表示分散的成形光信号的输出信号 以及分析输出信号的信号处理器，例如通过计算诸如反相傅立叶变换或输出信号的傅里叶变换的变换来提供光信号的频谱。

公开(公告)号：US08233147B2

公开(公告)日：2012-07-31

申请号：US12524335

申请日：2008-01-23

Applicant: Heikki Saari

Inventor： Heikki Saari

IPC: G01J3/28

CPC classification number: G01J3/10 ,  G01J3/26 ,  G01J3/433 ,  G02B26/001

Abstract: The invention relates to a spectrometer for material analysis and to a control method for a spectrometer. The spectrometer includes a radiant source (140) formed by multiple single radiation sources (141) having different central wavelengths, for generating a measuring signal, a measurement object (100) containing a material to be analyzed, at least one electrically tunable Fabry-Perot filter (120, 220) for the band pass filtering the measuring signal by at least two pass bands, and a detector (300, 400) for detecting said filtered measuring signals received from the measurement object (100). The spectrometer has: means (312) for modulating each of the single radiation sources (141) and correspondingly means (307, 309) for demodulating the detected signals such that the signal from each single radiation source can be distinguished from each other in the detector (300, 400); and means for detecting (300, 400) and demodulating (306, 307) multiple pass hands simultaneously.

Abstract translation: 本发明涉及用于材料分析的光谱仪和用于光谱仪的控制方法。 光谱仪包括由具有不同中心波长的多个单一辐射源（141）形成的用于产生测量信号的辐射源（140），包含待分析材料的测量对象（100），至少一个电可调节法布里 - 珀罗 滤波器（120,220），用于通过至少两个通带对测量信号进行带通滤波;以及检测器（300,400），用于检测从测量对象（100）接收的所述滤波的测量信号。 光谱仪具有：用于调制单个辐射源（141）中的每一个的装置（312）和用于解调检测到的信号的对应装置（307,309），使得来自每个单个辐射源的信号可以在检测器中彼此区分开 （300,400）; 以及同时检测（300,400）和解调（306,307）多个传球手的装置。