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    • 43. 发明公开
    • Measuring fluid properties using Multi-Mode Quasi-Shear-Horizontal Resonator
    • Messen derFlüssigkeitseigenschaftenunter Verwendung eines multimodalen准水平偏振光共振器
    • EP2093556A2
    • 2009-08-26
    • EP09152744.0
    • 2009-02-13
    • Delaware Capital Formation, Inc.
    • Andle, Jeffrey
    • G01N11/16
    • G01N9/002G01N2011/0066G01N2203/0051G01N2203/0075G01N2203/0092G01N2203/0094
    • A system and a method for providing information on two of the three variables, density (p), viscosity (η), and elastic modulus (c) of a fluid, such that independent knowledge of one variable allows the remaining two variables to be measured by a single sensor. The present invention relies on the interaction of a predominantly shear horizontal acoustic wave device ("quasi-shear-horizontal") with the fluid, so as to measure subtle differences in the interaction of two or more acoustic resonance states or waveguide modes of a multi-mode resonator or waveguide, and to derive the desired fluid characteristics therefrom. The most preferred embodiment is a dual-mode coupled resonator filter geometry with one resonant mode having a high degree of symmetry and the other having a high degree of anti-symmetry. By combining the additional information of multi-moded operation with the inherent ability of a horizontally-polarized quasi-shear-horizontal acoustic wave device (AWD) to operate in fluid environments, one obtains a multi-mode quasi-shear-horizontal (MMQSH) resonator.
    • 提供关于流体的密度(p),粘度(·)和弹性模量(c)的三个变量中的两个变量的信息的系统和方法,使得一个变量的独立知识允许测量剩余的两个变量 通过单个传感器。 本发明依赖于主要是剪切水平声波装置(“准剪切水平”)与流体的相互作用,以便测量多个声波谐振状态或波导模式的两个或多个声学共振状态或波导模式的相互作用中的微妙差异 模式谐振器或波导,并从其导出所需的流体特性。 最优选的实施例是双模耦合谐振器滤波器几何形状,其中一个谐振模式具有高度的对称性,另一个具有高度的抗对称性。 通过将多模式操作的附加信息与水平偏振准剪切水平声波装置(AWD)在流体环境中操作的固有能力相结合,可以获得多模式准剪切水平(MMQSH) 谐振器。