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公开(公告)号：US07092852B1
公开(公告)日：2006-08-15
申请号：US11337663
申请日：2006-01-20
IPC分类号： G06F19/00
摘要： An apparatus, software, and method for segregating out background signals from a signal of interest comprising sampling a signal that includes the background signals over one or more periods of time, forming a matrix from results of the sampling, calculating a matrix of basis functions via a singular value decomposition of the matrix from the forming operation, and determining a set of basis functions to employ to segregate out background signals. Also a corresponding wavelength modulation spectroscopy apparatus, software, and method.
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公开(公告)号：US06940599B1
公开(公告)日：2005-09-06
申请号：US10364777
申请日：2003-02-10
CPC分类号： G01J3/433 , G01J3/453 , G01N2021/3595 , G01N2021/399
摘要： A spectrometer and spectrometry method comprising modulating a light source with a carrier waveform multiplied by an envelope function, directing light from the light source through a sample region and to a photodetector, and demodulating current from the photodetector at a reference frequency. Also a method for computing a modulation waveform comprising specifying a target detection efficiency in a Fourier space, computing a response of a waveform that comprises a carrier wave multiplied by an envelope function, and modifying the envelope function using nonlinear optimization means to minimize a difference between the computed response and a predetermined target gain spectrum.
摘要翻译： 一种光谱仪和光谱测定方法，包括用载体波形乘以包络函数调制光源，将来自光源的光引导通过样品区域和光电检测器，以及以参考频率解调来自光电检测器的电流。 还有一种用于计算调制波形的方法，包括在傅里叶空间中指定目标检测效率，计算包括乘以包络函数的载波的波形的响应，以及使用非线性优化装置修改包络函数，以最小化 计算的响应和预定的目标增益谱。
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公开(公告)号：US06615142B1
公开(公告)日：2003-09-02
申请号：US09640566
申请日：2000-08-16
IPC分类号： G01J342
CPC分类号： G06F17/10
摘要： A spectrographic apparatus and method comprising providing a spectrometer, digitizing a sample spectrum in a spectral range that includes at least one feature of an analyte, and comparing, via a linear least squares computation, the sample spectrum to a spectrum known to closely approximate the sample spectrum at a reference condition and to one or more derivatives of the known spectrum taken with respect to one or more parameters of the reference condition.
摘要翻译： 一种光谱设备和方法，包括提供光谱仪，在包括分析物的至少一个特征的光谱范围内数字化样品光谱，并且通过线性最小二乘法计算将样品光谱与已知紧密接近的光谱进行比较 参考条件下的频谱以及相对于参考条件的一个或多个参数所采用的已知频谱的一个或多个导数。
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4.发明授权公开(公告)号：US08421455B1
公开(公告)日：2013-04-16
申请号：US12567452
申请日：2009-09-25
CPC分类号： G01R33/26 , G01R33/0206 , G01R33/028
摘要： A magnetometer and concomitant magnetometry method comprising emitting light from a light source, via a pulse generator pulsing light from the light source, directing the pulsed light to an atomic chamber, employing a field sensor in the atomic chamber, and via a signal processing module receiving a signal from the field sensor.
摘要翻译： 一种磁力计和伴随的磁力计方法，包括通过来自光源的脉冲发生器脉冲光发射来自光源的光，将脉冲光引导到原子室，在原子室中采用场传感器，以及经由信号处理模块接收 来自场传感器的信号。
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公开(公告)号：US07003436B1
公开(公告)日：2006-02-21
申请号：US10310259
申请日：2002-12-04
IPC分类号： G06F11/00
摘要： An apparatus, software, and method for segregating out background signals from a signal of interest comprising sampling a signal that includes the background signals over one or more periods of time, forming a matrix from results of the sampling, calculating a matrix of basis functions via a singular value decomposition of the matrix from the forming operation, and determining a set of basis functions to employ to segregate out background signals. Also a corresponding wavelength modulation spectroscopy apparatus, software, and method.
摘要翻译： 一种用于从感兴趣的信号分离背景信号的装置，软件和方法，包括：在一个或多个时间段内对包括背景信号的信号进行采样，从采样结果形成矩阵，经由 来自成形操作的矩阵的奇异值分解，以及确定一组用于分离背景信号的基函数。 还有一种相应的波长调制光谱装置，软件和方法。
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公开(公告)号：US06611335B1
公开(公告)日：2003-08-26
申请号：US09640804
申请日：2000-08-17
IPC分类号： G01N2161
CPC分类号： G01N21/39
摘要： A tone burst spectrometer and spectrometry method comprising employing a narrow bandwidth light source, a tone burst modulation waveform generator, synchronization of a lock-in amplifier to a burst frequency of the generator, and one or more of the following: use of a semiconductor laser; setting the tone frequency of the generator to an integer multiple of the burst frequency; using a tone modulation waveform other than a sine wave; setting the tone frequency of the generator to less than a half width at half maximum of a targeted spectral transition; and producing a spectral feature with a high signal to noise ratio while synchronizing the lock-in amplifier to the tone frequency of the generator or an odd harmonic of the tone frequency and wherein the output of the lock-in amplifier is low pass filtered and negative feedback is employed to stabilize the operating wavelength at or near a center wavelength of a spectral feature of the sample.
摘要翻译： 一种色谱分析仪和光谱测定方法，包括采用窄带宽光源，色调调制波形发生器，锁定放大器与发生器的脉冲串频率的同步，以及以下的一个或多个：使用半导体激光器 ; 将发生器的音频设置为突发频率的整数倍; 使用正弦波以外的音调调制波形; 将发生器的音调频率设置为小于目标频谱转换半个半的宽度; 并产生具有高信噪比的频谱特征，同时将锁定放大器与发生器的音频频率或音调频率的奇次谐波同步，并且其中锁定放大器的输出被低通滤波和负 采用反馈来稳定样品的光谱特征的中心波长处或附近的工作波长。
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公开(公告)号：US07230711B1
公开(公告)日：2007-06-12
申请号：US11133803
申请日：2005-05-19
CPC分类号： G01J3/433 , G01J3/453 , G01N2021/3595 , G01N2021/399
摘要： A spectrometer and spectrometry method comprising modulating a light source with a carrier waveform multiplied by an envelope function, directing light from the light source through a sample region and to a photodetector, and demodulating current from the photodetector at a reference frequency. Also a method for computing a modulation waveform comprising specifying a target detection efficiency in a Fourier space, computing a response of a waveform that comprises a carrier wave multiplied by an envelope function, and modifying the envelope function using nonlinear optimization means to minimize a difference between the computed response and a predetermined target detection efficiency.
摘要翻译： 一种光谱仪和光谱测定方法，包括用载体波形乘以包络函数调制光源，将来自光源的光引导通过样品区域和光电检测器，以及以参考频率解调来自光电检测器的电流。 还有一种用于计算调制波形的方法，包括在傅里叶空间中指定目标检测效率，计算包括乘以包络函数的载波的波形的响应，以及使用非线性优化装置修改包络函数，以最小化 计算的响应和预定的目标检测效率。
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8.发明授权Process for reducing interfering signals in optical measurements of water vapor 失效降低水蒸气光学测量中干扰信号的方法
公开(公告)号：US5804702A
公开(公告)日：1998-09-08
申请号：US799228
申请日：1997-02-14
CPC分类号： G01N21/3554
摘要： A process for improving moisture analyzers or hygrometers that use optical absorption techniques to measure water vapor. Water vapor in the optical path outside the sample region is treated to exchange the hydrogen atoms for deuterium, so that the adsorbed water vapor is converted to heavy water, D.sub.2 O, and isotopically mixed HDO, thus reducing or eliminating the interference in any optical absorption apparatus for measuring water vapor, provided the spectral resolution is sufficient to resolve normal water absorptions from heavy water absorptions.
摘要翻译： 一种改进使用光学吸收技术测量水蒸气的水分测定仪或湿度计的方法。 对样品区域外的光路中的水蒸气进行处理以交换氘氢原子，使吸附的水蒸汽转化为重水，D2O和同位素混合HDO，从而减少或消除任何光吸收装置的干扰 用于测量水蒸汽，只要光谱分辨率足以解决重吸水的正常吸水率。
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