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公开(公告)号：US20100324852A1
公开(公告)日：2010-12-23
申请号：US12792500
申请日：2010-06-02
申请人： H. Alan Wolf , Chung-Min Cheng , George Akehurst , Yvonne Mathez , Dalia G. Yablon , Alan M. Schilowitz , Manuel S. Alvarez
发明人： H. Alan Wolf , Chung-Min Cheng , George Akehurst , Yvonne Mathez , Dalia G. Yablon , Alan M. Schilowitz , Manuel S. Alvarez
IPC分类号： G01D18/00
摘要： The prior art describes the application of mechanical oscillators for the measurement of corrosion and/or deposition. Mechanical oscillators employ the use of resonance parameters, frequency and the quality factor Q, for the measurement of corrosion or deposition. However, the prior art does not consider the required precision for measuring frequency or Q in the presence of noise to make these measurements. In particular, the ability of the mechanical oscillator to measure small amounts of metal loss or deposition is not only dependent upon the mechanical design but is limited by the precision in determining the resonance frequency and Q. The present invention discloses methods for measuring these resonance parameters with a high precision in the presence of noise. This degree of precision is required to maximize the utility of these devices as sensitive probes for corrosion and deposition (fouling) measurement. All of the embodiments described herein employ curve fitting consistent with modeling the mechanical oscillator as a simple harmonic oscillator. This curve fitting procedure, combined with averaging and utilizing signal processing parameters to mitigate noise effects, adds considerable precision in measuring resonance parameters.
摘要翻译： 现有技术描述了用于测量腐蚀和/或沉积的机械振荡器的应用。 机械振荡器采用谐振参数，频率和质量因子Q来测量腐蚀或沉积。 然而，现有技术不考虑在存在噪声的情况下测量频率或Q的所需精度以进行这些测量。 特别地，机械振荡器测量少量金属损失或沉积的能力不仅取决于机械设计，而且受到确定共振频率和Q的精度的限制。本发明公开了用于测量这些谐振参数的方法 在噪声的存在下具有高精度。 需要这种精度来最大限度地利用这些装置作为腐蚀和沉积（污垢）测量的敏感探头。 本文所述的所有实施例都使用与将机械振荡器建模为简单谐波振荡器一致的曲线拟合。 该曲线拟合程序，结合平均和利用信号处理参数来减轻噪声影响，增加了测量共振参数的相当大的精度。
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公开(公告)号：US08676543B2
公开(公告)日：2014-03-18
申请号：US12792500
申请日：2010-06-02
申请人： H. Alan Wolf , Chung-Min Cheng , Dalia G. Yablon , Alan M. Schilowitz , Manuel S. Alvarez , Yvonne Mathez
发明人： H. Alan Wolf , Chung-Min Cheng , George Akehurst , Dalia G. Yablon , Alan M. Schilowitz , Manuel S. Alvarez
IPC分类号： H04B15/00
摘要： Mechanical oscillators employ the use of resonance parameters, frequency and the quality factor Q, for the measurement of corrosion or deposition. The ability of a mechanical oscillator to measure small amounts of metal loss or deposition is not only dependent upon the mechanical design but is limited by the precision in determining the resonance frequency and Q. Methods for measuring these resonance parameters with a high precision in the presence of noise are provided. The increased degree of precision improves the utility of these devices as sensitive probes for corrosion and deposition (fouling) measurement. The increased degree of precision is enabled in part by employing curve fitting consistent with modeling the mechanical oscillator as a simple harmonic oscillator. This curve fitting procedure, combined with averaging and utilizing signal processing parameters to mitigate noise effects, adds precision in measuring resonance parameters.
摘要翻译： 机械振荡器采用谐振参数，频率和质量因子Q来测量腐蚀或沉积。 机械振荡器测量少量金属损失或沉积的能力不仅取决于机械设计，而且受到确定谐振频率和Q的精确度的限制。在存在的情况下以高精度测量这些谐振参数的方法 的噪音。 提高的精度提高了这些器件作为腐蚀和沉积（污垢）测量的敏感探头的效用。 精度的提高部分地通过使用与将机械振荡器建模为简单谐波振荡器一致的曲线拟合来实现。 该曲线拟合程序，结合平均和利用信号处理参数来减轻噪声影响，增加了测量共振参数的精度。
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公开(公告)号：US07765854B2
公开(公告)日：2010-08-03
申请号：US11261050
申请日：2005-10-28
IPC分类号： G01N33/50
CPC分类号： G01N29/032 , B82Y35/00 , G01N29/022 , G01N29/30 , G01N2291/0255 , G01N2291/0256
摘要： This invention relates to a microcantilever stress sensor for detecting and quantifying low levels of contaminants in liquids and gases. The invention uses a chemical agent to impart chemical specificity to the microcantilever stress sensor. The microcantilever deflects when the chemical agent is replaced by a more strongly adsorbing chemical species. The magnitude of the deflection is then used as a measure of the quantity of contaminant present.
摘要翻译： 本发明涉及用于检测和定量液体和气体中低含量污染物的微悬臂梁应力传感器。 本发明使用化学试剂赋予微悬臂梁应力传感器化学特异性。 当化学药剂被更强吸附的化学物质代替时，微悬臂梁会偏转。 然后将偏转的大小用作测量存在的污染物的量。
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