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    Infrared spectrometer for the measurement of isotopic ratios
    18.
    发明授权
    Infrared spectrometer for the measurement of isotopic ratios 有权
    用于测量同位素比率的红外光谱仪

    公开(公告)号：US06486474B1

    公开(公告)日：2002-11-26

    申请号：US09374719

    申请日：1999-08-13

    申请人： Christopher J. Owen ,  Eugene Tokhtuev ,  Anatoly Skirda ,  Robert M. Carlson ,  Alexander Tokhtuev ,  Viktor Slobodyan

    发明人： Christopher J. Owen ,  Eugene Tokhtuev ,  Anatoly Skirda ,  Robert M. Carlson ,  Alexander Tokhtuev ,  Viktor Slobodyan

    IPC分类号： G01N110

    CPC分类号： G01N21/3504 ,  G01J3/0208 ,  G01J3/0232 ,  G01J3/42 ,  G01N21/031

    摘要： An infrared spectrometer for the determination of isotopic ratios of gaseous compounds includes a broad-band infrared light source, a spectral selector, a sample compartment, an infrared detector, and a processor. The spectral selector selectively transmits a wavelength window of infrared light covering a range of wavelengths in which the wavelength window can be selected alternatively to overlap with a wavelength range primarily absorbed by a compound with a first isotope or by the compound with a second isotope. The sample compartment holds a gas sample and includes a gas inlet and a gas outlet. The infrared spectrometer can be used to detect isotopic ratios of carbon dioxide, where enhancement of 13CO2 can indicate metabolic activity of an infection, for example by H. pylori, or of specific enzymes. Preferred embodiments use a particular multipass optical cell that includes a field mirror and a multi-segment objective mirror.

    摘要翻译： 用于测定气体化合物的同位素比率的红外光谱仪包括宽带红外光源，光谱选择器，样品室，红外检测器和处理器。 频谱选择器选择性地透射覆盖波长范围的红外光的波长窗口，其中波长窗口可以选择性地与主要被具有第一同位素的化合物吸收的波长范围重叠，或者与具有第二同位素的化合物重叠。 样品室容纳气体样品，并包括气体入口和气体出口。 红外光谱仪可用于检测二氧化碳的同位素比例，其中13CO2的增强可以指示感染的代谢活动，例如幽门螺杆菌或特异性酶。 优选实施例使用包括场反射镜和多分段物镜反射镜的特定多通道光学单元。

    ACOUSTIC FLUID PRESENCE/ABSENCE DETECTION
    19.
    发明申请
    ACOUSTIC FLUID PRESENCE/ABSENCE DETECTION 有权
    声学流体存在/不检测

    公开(公告)号：US20100141460A1

    公开(公告)日：2010-06-10

    申请号：US12329788

    申请日：2008-12-08

    申请人： Eugene Tokhtuev ,  Christopher J. Owen ,  Anatoly Skirda ,  Viktor Slobodyan ,  Anna Pilipchenko

    发明人： Eugene Tokhtuev ,  Christopher J. Owen ,  Anatoly Skirda ,  Viktor Slobodyan ,  Anna Pilipchenko

    IPC分类号： G08B21/00 ,  G01F23/296

    CPC分类号： G01F23/0007 ,  A61M5/1684 ,  A61M2205/3375 ,  G01F23/2961

    摘要： An acoustic sensor detects presence and/or absence of fluid in a fluid delivery medium. The acoustic sensor detects fluid absence based on the difference of the speed of sound between air and a fluid. For example, the acoustic sensor may detect fluid absence based on a phase shift between acoustic signals transmitted through the fluid delivery medium when fluid is present as compared to acoustic signals transmitted through the fluid delivery medium when fluid is absent, e.g., when air or bubbles are present in the fluid delivery medium.

    摘要翻译： 声传感器检测流体输送介质中流体的存在和/或不存在。 声学传感器基于空气和流体之间的声速的差异来检测流体不存在。 例如，当存在流体时，声传感器可以基于通过流体输送介质传输的声信号之间的相移来检测流体不存在，与当流体不存在时通过流体输送介质传播的声信号相比，例如当空气或气泡 存在于流体输送介质中。

    Multiplexed sensor array
    20.
    发明授权
    Multiplexed sensor array 失效
    多路传感器阵列

    公开(公告)号：US06494616B1

    公开(公告)日：2002-12-17

    申请号：US09632405

    申请日：2000-08-04

    申请人： Eugene Tokhtuev ,  Robert M. Carlson ,  Christopher J. Owen ,  Anatoly Skirda ,  Viktor Slobodyan ,  Alexander Tokhtuev

    发明人： Eugene Tokhtuev ,  Robert M. Carlson ,  Christopher J. Owen ,  Anatoly Skirda ,  Viktor Slobodyan ,  Alexander Tokhtuev

    IPC分类号： G01K300

    CPC分类号： G01K1/026 ,  G01D3/02

    摘要： A sensor array includes a plurality of sensors connected to two or more groups of wires such that individual sensors can be addressed. No two sensors are connected to the same two wires. The groups of wires are connected to multiplexers or the like to address particular wires connecting a unique sensor. Dramatically improved accuracy is obtained by connecting rectifiers in series with the sensors to significantly reduce reverse current through a sensor that can lead to significant errors. In some preferred embodiments, the array includes a plurality of temperature sensors, especially for use in measuring temperature at different depths in a body of water

    摘要翻译： 传感器阵列包括连接到两组或多组电线的多个传感器，使得各个传感器可被寻址。 没有两个传感器连接到相同的两根电线。 电线组连接到多路复用器等以寻址连接独特传感器的特定电线。 通过将整流器与传感器串联连接获得显着提高的精度，以显着减少通过传感器的反向电流，从而导致严重的误差。 在一些优选实施例中，阵列包括多个温度传感器，特别是用于测量水体不同深度处的温度