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公开(公告)号：US11674846B2
公开(公告)日：2023-06-13
申请号：US17447951
申请日：2021-09-17
Applicant: VIAVI Solutions Inc.
Inventor： Curtis R. Hruska
CPC classification number: G01J3/0297 , G01J3/027 , G01J3/42 , G01N21/274 , G01J3/0205 , G01J3/10 , G01N2201/1273 , G01N2201/12707 , G01N2201/12715 , G01N2201/12723 , G01N2201/12738
Abstract: A device may determine a calibration value for a spectrometer using light from a first light source; deactivate the first light source after determining the calibration value; perform measurement with regard to a sample based on the calibration value, wherein the measurement of the sample is performed using light from a second light source; determine that the calibration value is to be updated; and update the calibration value using the light from the first light source.
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公开(公告)号：US12044570B2
公开(公告)日：2024-07-23
申请号：US18320295
申请日：2023-05-19
Applicant: VIAVI Solutions Inc.
Inventor： Curtis R. Hruska
CPC classification number: G01J3/0297 , G01J3/027 , G01J3/42 , G01N21/274 , G01J3/0205 , G01J3/10 , G01N2201/12707 , G01N2201/12715 , G01N2201/12723 , G01N2201/1273 , G01N2201/12738
Abstract: A device may determine a calibration value for a spectrometer using light from a first light source; deactivate the first light source after determining the calibration value; perform measurement with regard to a sample based on the calibration value, wherein the measurement of the sample is performed using light from a second light source; determine that the calibration value is to be updated; and update the calibration value using the light from the first light source.
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公开(公告)号：US20240094122A1
公开(公告)日：2024-03-21
申请号：US18370034
申请日：2023-09-19
Applicant: SICK AG
Inventor： Thomas BEYER , Julian EDLER
CPC classification number: G01N21/39 , G01J3/4338 , G01N2201/121 , G01N2201/1273
Abstract: The invention relates to a method for measuring a concentration of a gas in a gas mixture, said method comprising that: a light beam modulated in a ramp shape and/or in a step shape in its wavelength and additionally periodically modulated, in particular in its wavelength, is transmitted from a light source, in particular a laser, into a measurement zone; the modulated light beam passes through a gas mixture in the measurement zone and is detected as reception light by a detector, wherein the reception light is converted by the detector into a detector signal; a derivative signal is determined based on the detector signal by performing a transformation of the detector signal into the frequency range, in particular by a Fourier transform of the detector signal, wherein an evaluation of the detector signal transformed into the frequency range is performed, in particular only, for an n-fold of the frequency of the modulated light beam in order to obtain the derivative signal; and at least two measurement values of a phase of the derivative signal are determined and a correction function is calculated based on the determined measurement values of the phase of the derivative signal in order to correct the derivative signal with the correction function.
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公开(公告)号：US20180313690A1
公开(公告)日：2018-11-01
申请号：US15937177
申请日：2018-03-27
Applicant: VIAVI Solutions Inc.
Inventor： Curtis R. HRUSKA
CPC classification number: G01J3/0297 , G01J3/0205 , G01J3/027 , G01J3/10 , G01J3/42 , G01N21/274 , G01N2201/12707 , G01N2201/12715 , G01N2201/12723 , G01N2201/1273 , G01N2201/12738
Abstract: A device may determine a calibration value for a spectrometer using light from a first light source; deactivate the first light source after determining the calibration value; perform measurement with regard to a sample based on the calibration value, wherein the measurement of the sample is performed using light from a second light source; determine that the calibration value is to be updated; and update the calibration value using the light from the first light source.
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Patent Agency Ranking
公开(公告)号：US20120197575A1
公开(公告)日：2012-08-02
申请号：US13015624
申请日：2011-01-28
Applicant: Alexei SAVELIEV , Vilas Vyankatrao JANGALE , Sergeui ZELEPOUGA , John PRATAPAS
Inventor： Alexei SAVELIEV , Vilas Vyankatrao JANGALE , Sergeui ZELEPOUGA , John PRATAPAS
CPC classification number: G01J3/42 , G01N21/276 , G01N21/3504 , G01N21/359 , G01N2201/121 , G01N2201/1273
Abstract: A method and apparatus for absorbance correction in a spectroscopic heating value sensor in which a reference light intensity measurement is made on a non-absorbing reference fluid, a light intensity measurement is made on a sample fluid, and a measured light absorbance of the sample fluid is determined. A corrective light intensity measurement at a non-absorbing wavelength of the sample fluid is made on the sample fluid from which an absorbance correction factor is determined. The absorbance correction factor is then applied to the measured light absorbance of the sample fluid to arrive at a true or accurate absorbance for the sample fluid.
Abstract translation: 在分光加热值传感器中进行吸光度校正的方法和装置，其中在非吸收参考流体上进行参考光强度测量，对样品流体进行光强度测量，并且测量样品流体的吸光度 决心，决意，决定。 在样品流体上对样品流体的非吸收波长进行校正光强度测量，其中确定吸光度校正因子。 然后将吸光度校正因子应用于测量的样品流体的吸光度，以获得样品流体的真实或准确的吸光度。
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公开(公告)号：US4687934A
公开(公告)日：1987-08-18
申请号：US818342
申请日：1986-01-10
Applicant: Robert E. Passaro , Raymond E. Rogers , Craig J. Griffith
Inventor： Robert E. Passaro , Raymond E. Rogers , Craig J. Griffith
CPC classification number: G01N21/274 , G01N2021/3159 , G01N2021/3166 , G01N21/3504 , G01N2201/126 , G01N2201/1273 , G01N2201/12769
Abstract: Automatic zeroing apparatus zeroes an infrared gas analyzer automatically upon the occurrence of preselected conditions to indicate zero in the absence of absorption of infrared radiation by a gas mixture being analyzed. The gas analyzer has a sample cell for containing a gas mixture to be analyzed. Infrared radiation directed through the sample cell is detected at a preselected wavelength to produce a detection signal. A signal processor outputs a signal systematically related to the difference between the detection signal and a reference signal. For zeroing the sample cell is filled with gas substantially nonabsorbent of infrared radiation at the respective characteristic wavelength. A comparator produces an error signal when the output signal differs from zero. A gain control automatically controls the signal level of the detection signal to reduce the output signal substantially to zero with the nonabsorbent gas filling the sample cell. The preselected conditions may include the passage of a predetermined time and a temperature drift beyond a predetermined limit.
Abstract translation: 自动归零装置在发生预选条件时自动归零红外气体分析仪，以便在被正在分析的气体混合物不吸收红外辐射时指示为零。 气体分析仪具有用于容纳要分析的气体混合物的样品池。 以预选的波长检测引导通过样品池的红外辐射，以产生检测信号。 信号处理器输出与检测信号和参考信号之间的差异系统地相关的信号。 为了归零，样品池中填充有相应特征波长的基本上不吸收红外辐射的气体。 当输出信号与零不同时，比较器产生一个误差信号。 增益控制器自动控制检测信号的信号电平，使填充样品池的非吸收气体将输出信号基本上降至零。 预选条件可以包括经过预定时间和温度漂移超出预定极限。
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公开(公告)号：US08538717B2
公开(公告)日：2013-09-17
申请号：US13015624
申请日：2011-01-28
Applicant: Alexei Saveliev , Vilas Vyankatrao Jangale , Sergeui Zelepouga , John Pratapas
Inventor： Alexei Saveliev , Vilas Vyankatrao Jangale , Sergeui Zelepouga , John Pratapas
CPC classification number: G01J3/42 , G01N21/276 , G01N21/3504 , G01N21/359 , G01N2201/121 , G01N2201/1273
Abstract: A method and apparatus for absorbance correction in a spectroscopic heating value sensor in which a reference light intensity measurement is made on a non-absorbing reference fluid, a light intensity measurement is made on a sample fluid, and a measured light absorbance of the sample fluid is determined. A corrective light intensity measurement at a non-absorbing wavelength of the sample fluid is made on the sample fluid from which an absorbance correction factor is determined. The absorbance correction factor is then applied to the measured light absorbance of the sample fluid to arrive at a true or accurate absorbance for the sample fluid.
Abstract translation: 在分光加热值传感器中进行吸光度校正的方法和装置，其中在非吸收参考流体上进行参考光强度测量，对样品流体进行光强度测量，并且测量样品流体的吸光度 决心，决意，决定。 在样品流体上对样品流体的非吸收波长进行校正光强度测量，其中确定吸光度校正因子。 然后将吸光度校正因子应用于测量的样品流体的吸光度，以获得样品流体的真实或准确的吸光度。
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公开(公告)号：US07301640B2
公开(公告)日：2007-11-27
申请号：US11018625
申请日：2004-12-21
Applicant: Lee D. Tice
Inventor： Lee D. Tice
IPC: G01N21/61
CPC classification number: G01N21/15 , G01N21/314 , G01N21/3504 , G01N2021/158 , G01N2021/3137 , G01N2021/3166 , G01N2201/1214 , G01N2201/1273
Abstract: A non-dispersive infra-red gas detector includes a condensation eliminating heater. The heater can be intermittently energized in response to a signal received from an environmental sensor. Signals from a gas sensor in the detector can be processed to determine when to energize the heater.
Abstract translation: 非分散红外气体检测器包括冷凝消除加热器。 加热器可以响应于从环境传感器接收到的信号而间歇地通电。 来自检测器中的气体传感器的信号可以被处理以确定加热器何时通电。
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公开(公告)号：US20060139647A1
公开(公告)日：2006-06-29
申请号：US11018625
申请日：2004-12-21
Applicant: Lee Tice
Inventor： Lee Tice
IPC: G01N21/00
CPC classification number: G01N21/15 , G01N21/314 , G01N21/3504 , G01N2021/158 , G01N2021/3137 , G01N2021/3166 , G01N2201/1214 , G01N2201/1273
Abstract: A non-dispersive infra-red gas detector includes a condensation eliminating heater. The heater can be intermittently energized in response to a signal received from an environmental sensor. Signals from a gas sensor in the detector can be processed to determine when to energize the heater.
Abstract translation: 非分散红外气体检测器包括冷凝消除加热器。 加热器可以响应于从环境传感器接收到的信号而间歇地通电。 来自检测器中的气体传感器的信号可以被处理以确定加热器何时通电。
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