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1. 发明授权

US5486768A Surface resistivity meter for determining surface degradation of high resistivity materials 失效
标题翻译：用于确定高电阻率材料表面退化的表面电阻率计
公开(公告)号：US5486768A
公开(公告)日：1996-01-23
申请号：US251393
申请日：1994-05-31
申请人： Howard S. Silvus, Jr. , William A. Mallow , Charles H. Parr , Jerome J. Dziuk
发明人： Howard S. Silvus, Jr. , William A. Mallow , Charles H. Parr , Jerome J. Dziuk
IPC分类号： G01N27/04 , G01R27/02
CPC分类号： G01N27/041
摘要： Apparatus and method for determining the amount of oxidative and hydrolytic degradation in the surface of a highly resistive material, such as a polymer. A special probe provides an annular resistance on the surface of a sample of the material. The voltage drop across the sample determines the input to a meter circuit. A guard circuit has an applied voltage that is substantially the same as the voltage at the meter circuit input. This circuitry permits a very low voltage source to be used.
摘要翻译：用于测定高电阻材料如聚合物表面的氧化和水解降解量的装置和方法。特殊探针在材料样品的表面提供环形电阻。样品上的电压降决定了仪表电路的输入。保护电路的施加电压基本上与仪表电路输入端的电压相同。该电路允许使用非常低的电压源。

2. 发明授权

US4352983A Method and apparatus for measuring concentration of suspended oils in water 失效
标题翻译：用于测量水中悬浮油的浓度的方法和装置
公开(公告)号：US4352983A
公开(公告)日：1982-10-05
申请号：US141768
申请日：1980-04-21
申请人： Howard S. Silvus, Jr. , Francis M. Newman, Jr. , Robert K. Swanson
发明人： Howard S. Silvus, Jr. , Francis M. Newman, Jr. , Robert K. Swanson
IPC分类号： G01N21/43 , G02B5/16
CPC分类号： G01N21/431
摘要： A method of quantitatively monitoring suspended oils in water combining the technologies of reversed-phase liquid chromatography and fiber optics is shown. A specially treated optical fiber collects and concentrates suspended oils on its surface so that optical transmission through the fiber is related to the contaminant concentration. The transmitted light from a treated optical fiber is detected by a photodiode and photocurrent is passed through an amplifier to give an electronic signal. The electronic signal is either recorded or indicated or generates a control signal whereby the light signal is translated into a value that corresponds to the concentration of oils suspended in water. To be sensed by the sensor cell, the fluid containing suspended oils is brought from a storage means to a reservoir and forced through the sensor cell by fluid pressure.
摘要翻译：显示了一种定量监测水中悬浮油的方法，结合了反相液相色谱和光纤的技术。特殊处理的光纤在其表面上收集和浓缩悬浮油，使得通过纤维的光学透射与污染物浓度相关。来自经处理的光纤的透射光由光电二极管检测，光电流通过放大器以产生电子信号。电子信号被记录或指示，或者产生控制信号，由此光信号被转换成对应于悬浮在水中的油的浓度的值。为了被传感器电池感测，含有悬浮油的流体从储存装置被带入储存器并通过流体压力被迫穿过传感器单元。

3. 发明授权

US5473245A Magnetostrictive linear displacement transmitter having improved piezoelectric sensor 失效
标题翻译：具有改进的压电传感器的磁致伸缩线性位移传感器
公开(公告)号：US5473245A
公开(公告)日：1995-12-05
申请号：US147028
申请日：1993-11-04
申请人： Howard S. Silvus, Jr. , Edward J. Miller, Jr. , J. Marion Matherne , Tony W. Harper
发明人： Howard S. Silvus, Jr. , Edward J. Miller, Jr. , J. Marion Matherne , Tony W. Harper
IPC分类号： G01B7/00 , G01B7/02 , G01F23/02 , G01F23/72 , G01B7/14 , G01F23/30 , H03H9/00
CPC分类号： G01F23/72 , G01B7/003 , G01B7/02 , G01F23/02
摘要： An improved magnetostrictive wire based position transducer that has applications in both liquid level measuring systems and in position indicating systems. A cylindrically structured and circularly polarized piezoelectric element directly measures the torsional acoustic waves in the magnetostrictive wire as they are received by the sensor. The cylindrical structure of the sensor eliminates many of the inadvertently detected acoustic and electrical pulses within the wire that are not indicative of the passage of the torsional wave of concern. The present system provides an improved sensor configuration which is selectively sensitive to torsional waves while being insensitive to vibrations in alternate planes. This improved piezoelectric sensor in combination with the electrical configuration allows placement of the magnetostrictive wire apart from the liquid whose level is being measured or from the indicator whose position is of concern. The system provides a means for transmitting the liquid level within a container to a sensor column outside of the container in a manner that improves access, maintenance, calibration, and installation. In the preferred embodiment, each of the above improvements is provided in a system that incorporates an instrumentation loop powered microprocessor based transmitter with low current requirements and increased sensitivity.
摘要翻译：一种改进的基于磁致伸缩线的位置传感器，其具有在液位测量系统和位置指示系统中的应用。圆柱形结构的圆偏振压电元件直接测量磁致伸缩导线中由传感器接收的扭转声波。该传感器的圆柱形结构消除了许多在线内无意中检测到的声和电脉冲，这些脉冲和电脉冲并不表示所关注的扭转波的通过。本系统提供改进的传感器配置，其对扭转波选择性敏感，同时对交替平面中的振动不敏感。这种改进的压电传感器与电气结构相结合，允许将磁致伸缩电线放置在与被测量电平的液体或从其位置关注的指示器的位置。该系统提供了一种用于将容器内的液位传送到容器外部的传感器柱的方式，以改善进入，维护，校准和安装的方式。在优选实施例中，上述改进的每一个都提供在一个系统中，该系统结合了具有低电流要求和增加的灵敏度的基于仪器回路供电的基于微处理器的发射器。

4. 发明授权

US4197478A Electronically tunable resonant accelerometer 失效
标题翻译：电子可调共振加速度计
公开(公告)号：US4197478A
公开(公告)日：1980-04-08
申请号：US6285
申请日：1979-01-25
申请人： Howard S. Silvus, Jr.
发明人： Howard S. Silvus, Jr.
IPC分类号： G01P15/09 , G01P15/097 , G01P15/10 , H01L41/10
CPC分类号： G01P15/097 , G01P15/0907 , G01P15/0922 , G01N2291/02827
摘要： An electronically tunable resonant accelerometer is shown wherein the frequency of a resonant peak may be adjusted over a range of frequencies. A piezoelectric element of the accelerometer is used with a seismic mass to generate an output voltage in response to reciprocating motion of the accelerometer. In a compression mode, a feedback loop applies a feedback voltage to a second piezoelectric element mechanically coupled to the first mentioned piezoelectric element. In a cantilever mode, a feedback loop applies a feedback voltage to another location along the first mentioned piezoelectric element which is formed from two bonded piezoelectric elements. By adjusting gain and phase of the feedback loop, first, the resonant frequency of the accelerometer may be varied over a wide range of frequencies to give increased sensitivity to reciprocating motion occurring at a frequency within a narrow band width centered on the resonant frequency, and, second, damping of the resonance may be varied to control the band width of the resonance.
摘要翻译：示出了可以在一个频率范围内调节谐振峰值的频率的电子可调共振加速度计。加速度计的压电元件与地震质量块一起使用以响应于加速度计的往复运动而产生输出电压。在压缩模式中，反馈环路将反馈电压施加到机械耦合到第一提到的压电元件的第二压电元件。在悬臂模式中，反馈回路将反馈电压施加到由两个压接元件形成的第一个提到的压电元件的另一个位置上。通过调整反馈回路的增益和相位，首先，加速度计的谐振频率可以在宽的频率范围内变化，以提供对在以谐振频率为中心的窄带宽内的频率发生的往复运动的增加的灵敏度，以及第二，可以改变谐振的阻尼以控制谐振的带宽。

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