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公开(公告)号：US06718827B1
公开(公告)日：2004-04-13
申请号：US10298102
申请日：2002-11-15
申请人： Shih-Ying Lee , Gino A. Pinto , Thomas Foley
发明人： Shih-Ying Lee , Gino A. Pinto , Thomas Foley
IPC分类号： G01L912
CPC分类号： G01L9/0072 , G01L19/0618
摘要： A capacitive sensor includes an elastic member extending about a central axis, having a central region, a peripheral region, a first side, and a second side. An overpressure stop member has an inner surface and an outer surface. The inner surface of the overpressure stop member has a contour adapted to limit deflection of the elastic member caused by a differential pressure between the two regions across the elastic member. The outer surface of the overpressure stop member has an first electrically conductive region. A second plate is spaced apart from the outer surface of the overpressure stop member, and being connected to the central region of the elastic member by a post, wherein the post transfers deformation of the elastic member caused by differential pressure across the elastic member to movement of the second plate along the central axis. The second plate has a second electrically conductive region opposite the first electrically conductive region, wherein the first electrically conductive region and the second electrically conductive region form a capacitor.
摘要翻译： 电容传感器包括围绕中心轴线延伸的弹性构件，具有中心区域，周边区域，第一侧面和第二侧面。 超压止动构件具有内表面和外表面。 超压止动构件的内表面具有适于限制弹性构件由穿过弹性构件的两个区域之间的压差引起的偏转的轮廓。 超压止动构件的外表面具有第一导电区域。 第二板与超压止动构件的外表面间隔开，并且通过柱连接到弹性构件的中心区域，其中柱通过弹性构件的压差而导致弹性构件的变形移动 的第二板沿着中心轴线。 第二板具有与第一导电区域相对的第二导电区域，其中第一导电区域和第二导电区域形成电容器。
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公开(公告)号：US20130055820A1
公开(公告)日：2013-03-07
申请号：US13491842
申请日：2012-06-08
申请人： Kevin M. Bourbeau , Eric C. Beishline , Michael J. Amirto , Gino A. Pinto , Benjamin F. Fontaine
发明人： Kevin M. Bourbeau , Eric C. Beishline , Michael J. Amirto , Gino A. Pinto , Benjamin F. Fontaine
IPC分类号： G01L9/00
CPC分类号： G01L19/04 , G01L9/0072
摘要： A pressure sensor (40) useful as a vacuum manometer. A reference pressure cavity (50) of the sensor is evacuated through an evacuation opening (72) located behind a plate portion (54) of the sensor electrode (52) having a non-planar surface for supporting the diaphragm (44) during an overpressure event. The electrode is hermetically sealed to the body (42) of the sensor by a brazed joint with a ceramic seal member (60) disposed there between. The brazed joint may include a layer of buffer material (79) which provides a degree of malleability to the joint to avoid cracking of the ceramic seal member. The brazed ceramic/metal joint permits the selection of materials such that differential thermal expansion effects can be passively minimized. The electrode is connected to the sensor circuitry (84) by a wire having a spring section (53), thereby providing a stress free interconnection.
摘要翻译： 用作真空压力计的压力传感器（40）。 传感器的参考压力腔（50）通过位于传感器电极（52）的板部分（54）后面的抽空开口（72），该抽气开口具有用于在超压期间支撑膜片（44）的非平面表面 事件。 电极通过钎焊接头与传感器的主体（42）气密密封，陶瓷密封件（60）设置在其间。 钎焊接头可以包括缓冲材料层（79），该层向接头提供一定程度的延展性，以避免陶瓷密封构件的开裂。 钎焊的陶瓷/金属接头允许选择材料，使得不同的热膨胀效应可被动地最小化。 电极通过具有弹簧部分（53）的导线连接到传感器电路（84），从而提供无应力的互连。
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公开(公告)号：US20090015269A1
公开(公告)日：2009-01-15
申请号：US12169796
申请日：2008-07-09
CPC分类号： G01L9/0072
摘要： A capacitive sensor (10) producing an output signal (VOUT) that is insensitive to stray capacitance (CS) caused by environmental and aging conditions. The sensor includes a sensing electrode (11) that exhibits a total capacitance that is responsive to both the measured process variable and to stray capacitance (CT=CA+CS). The sensor also includes a reference electrode (19) that exhibits a stray capacitance (CS′) essentially the same as that of the sensing electrode, but that is insensitive to the process variable. Balancing circuitry (29) provides an output signal that is responsive to the measured process variable and insensitive to the stray capacitance (VOUT=CT−CS′). The reference electrode is manufactured of the same materials and dimensions as the sensing electrode and may be mounted in the sensor body proximate the sensing electrode.
摘要翻译： 产生由环境和老化条件引起的对杂散电容（CS）不敏感的输出信号（VOUT）的电容传感器（10）。 传感器包括感测电极（11），其具有响应于测量的过程变量和杂散电容（CT = CA + CS）的总电容。 该传感器还包括参考电极（19），其具有与感测电极基本相同的寄生电容（CS'），但对过程变量不敏感。 平衡电路（29）提供响应于测量的过程变量并且对杂散电容（VOUT = CT-CS'）不敏感的输出信号。 参考电极由与感测电极相同的材料和尺寸制造，并且可以安装在靠近感测电极的传感器体中。
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公开(公告)号：US06257068B1
公开(公告)日：2001-07-10
申请号：US09440247
申请日：1999-11-15
申请人： Dennis K. Briefer , Gino A. Pinto
发明人： Dennis K. Briefer , Gino A. Pinto
IPC分类号： G01L912
CPC分类号： G01L9/0072
摘要： A capacitive pressure sensor includes a housing element, a first electrode assembly and a second electrode assembly. The first electrode assembly includes a deformable elastic member, and a plurality of petal electrodes. The petal electrodes are attached to the elastic member and extend from the elastic member in a direction which is substantially perpendicular to the surface of the elastic member. The elastic member of the first electrode assembly is secured at its perimeter to the housing element at an aperture in the housing, so that the petal electrodes are enclosed within the housing. The second electrode assembly is also enclosed within the housing and is surrounded by the elongated electrodes. The spatial relationship between the petal electrodes and the second electrode assembly is directly related to the capacitance measured between them. As pressure is applied to the outer surface of the elastic member, the elastic member deflects and causes the spatial relationship between the petal electrodes and the second electrode to change, which causes the capacitance measured between them to change.
摘要翻译： 电容式压力传感器包括壳体元件，第一电极组件和第二电极组件。 第一电极组件包括可变形弹性构件和多个花瓣电极。 花瓣电极附接到弹性构件并且从弹性构件沿基本上垂直于弹性构件的表面的方向延伸。 第一电极组件的弹性构件在其周边处固定在外壳上的壳体元件处，使得花瓣电极被封闭在壳体内。 第二电极组件也被封装在壳体内并被细长的电极围绕。 花瓣电极和第二电极组件之间的空间关系与它们之间测量的电容直接相关。 当对弹性构件的外表面施加压力时，弹性构件偏转并导致花瓣电极和第二电极之间的空间关系改变，这导致它们之间测量的电容发生变化。
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公开(公告)号：US06789429B2
公开(公告)日：2004-09-14
申请号：US10409531
申请日：2003-04-08
申请人： Gino A. Pinto , Kevin Vaughan
发明人： Gino A. Pinto , Kevin Vaughan
IPC分类号： G01I912
CPC分类号： G01L9/0072
摘要： A capacitive pressure sensor for measuring a pressure applied to an elastic member includes a capacitive plate disposed adjacent to the elastic member so as to define a gap between a planar conductive surface of the elastic member and a corresponding planar surface of the capacitive plate. The gap, capacitive plate and elastic member together define a capacitor having a characteristic capacitance. The sensor further includes an elongated electrical conductor characterized by an associated inductance value. The conductor is fixedly attached to and electrically coupled with the capacitive plate. The gap between the capacitive plate and the elastic member varies as a predetermined function of the pressure applied to the elastic member so as to vary the characteristic capacitance. The capacitor and the electrical conductor together form an electrical resonator having a characteristic resonant frequency. Varying the capacitance of this tank circuit varies the resonant frequency of the tank circuit. Thus, the resonant frequency of the tank circuit is indicative of the pressure applied to the elastic member. The close physical proximity of the capacitor and the electrical conductor equalizes the effects of environmental influences such as temperature variations, vibration and shock, thus making such effects more predictable.
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公开(公告)号：US5798462A
公开(公告)日：1998-08-25
申请号：US744921
申请日：1996-11-06
申请人： Dennis K. Briefer , Gino A. Pinto
发明人： Dennis K. Briefer , Gino A. Pinto
摘要： A differential pressure transducer includes a pair of interior chambers separated by a peripherally supported, nominally planar electrically conductive diaphragm. A magnetic assembly is positioned on at least one chamber wall opposite to a central portion of the diaphragm. The magnetic assembly includes an electrical conductor and preferably a magnetic field permeable electric field shield between the electrical conductor and the chamber so that as the central portion of diaphragm is displaced from its nominal plane in response to an applied pressure differential, the inductance of the magnetic assembly changes. The transducer may be a portion of a tank circuit of an oscillator having a frequency of oscillation that varies with the pressure differential applied across the diaphragm.
摘要翻译： 差压换能器包括由周边支撑的标称平面的导电隔膜隔开的一对内室。 磁性组件位于与隔膜的中心部分相对的至少一个室壁上。 磁性组件包括电导体并且优选地在电导体和腔室之间的磁场可渗透电场屏蔽，使得当膜片的中心部分响应于施加的压差从其标称平面偏移时，磁体的电感 装配更改。 换能器可以是振荡器的振荡电路的一部分，其振荡频率随施加在隔膜上的压差而变化。
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公开(公告)号：US5705751A
公开(公告)日：1998-01-06
申请号：US477327
申请日：1995-06-07
申请人： Dennis K. Briefer , Gino A. Pinto
发明人： Dennis K. Briefer , Gino A. Pinto
摘要： A differential pressure transducer includes a pair of interior chambers separated by a peripherally supported, nominally planar electrically conductive diaphragm. A magnetic assembly is positioned on at least one chamber wall opposite to a central portion of the diaphragm. The magnetic assembly includes an electrical conductor and preferably a magnetic field permeable electric field shield between the electrical conductor and the chamber so that as the central portion of diaphragm is displaced from its nominal plane in response to an applied pressure differential, the inductance of the magnetic assembly changes the transducer may be a portion of a tank circuit of an oscillator having a frequency of oscillation that varies with the pressure differential applied across the diaphragm.
摘要翻译： 差压换能器包括由周边支撑的标称平面的导电隔膜隔开的一对内室。 磁性组件位于与隔膜的中心部分相对的至少一个室壁上。 磁性组件包括电导体并且优选地在电导体和腔室之间的磁场可渗透电场屏蔽，使得当膜片的中心部分响应于施加的压差从其标称平面偏移时，磁体的电感 组件改变传感器可以是振荡器的振荡电路的一部分，其振荡频率随施加在隔膜上的压差而变化。
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公开(公告)号：US5492016A
公开(公告)日：1996-02-20
申请号：US162167
申请日：1993-12-14
CPC分类号： G01L9/0072 , G01L19/04 , G01L9/125
摘要： A melt pressure measurement probe for insertion through wall of melt-containing vessel has a pressure-deflectable end portion for contact with pressurized melt. Pressure-resistant securing means fixes the end surface in a non-flow obstruction relationship. A seal surface on the probe prevents exposure of the melt to the securing means. Pressure detection means internal of the probe, responsive to deflection of the probe end surface to detect melt pressure, comprises a temperature-compensated capacitive sensor, one capacitor plate defined by the end portion and an opposite capacitor plate in the probe with a capacitive gap in-between. Electronic circuitry remote from the melt-exposed end, including circuitry within the probe to generate a signal proportional to the capacitance, compensates for change of temperature of the capacitor to generate an output signal proportional to melt pressure.
摘要翻译： PCT No.PCT / US92 / 04982 Sec。 371日期1993年12月14日第 102（e）日期1993年12月14日PCT提交1992年6月15日PCT公布。 出版物WO92 / 22794 日本1992年12月3日。用于插入通过熔体容器的壁的熔体压力测量探针具有用于与加压熔体接触的可压偏端部。 耐压固定装置将端面固定在非流动阻塞关系中。 探针上的密封表面防止熔体暴露于固定装置。 压力检测装置是探针的内部，响应于探针端表面的偏转以检测熔体压力，包括温度补偿电容传感器，由端部限定的一个电容器板和探针中具有电容间隙的相对的电容器板 -之间。 远离熔体暴露端的电子电路，包括探针内的电路以产生与电容成比例的信号，补偿电容器的温度变化，以产生与熔体压力成比例的输出信号。
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公开(公告)号：US08893555B2
公开(公告)日：2014-11-25
申请号：US13491842
申请日：2012-06-08
申请人： Kevin M. Bourbeau , Eric C. Beishline , Michael J. Amirto , Gino A. Pinto , Benjamin F. Fontaine
发明人： Kevin M. Bourbeau , Eric C. Beishline , Michael J. Amirto , Gino A. Pinto , Benjamin F. Fontaine
CPC分类号： G01L19/04 , G01L9/0072
摘要： A pressure sensor (40) useful as a vacuum manometer. A reference pressure cavity (50) of the sensor is evacuated through an evacuation opening (72) located behind a plate portion (54) of the sensor electrode (52) having a non-planar surface for supporting the diaphragm (44) during an overpressure event. The electrode is hermetically sealed to the body (42) of the sensor by a brazed joint with a ceramic seal member (60) disposed there between. The brazed joint may include a layer of buffer material (79) which provides a degree of malleability to the joint to avoid cracking of the ceramic seal member. The brazed ceramic/metal joint permits the selection of materials such that differential thermal expansion effects can be passively minimized. The electrode is connected to the sensor circuitry (84) by a wire having a spring section (53), thereby providing a stress free interconnection.
摘要翻译： 用作真空压力计的压力传感器（40）。 传感器的参考压力腔（50）通过位于传感器电极（52）的板部分（54）后面的抽气开口（72），该抽气开口具有用于在超压期间支撑膜片（44）的非平面表面 事件。 电极通过钎焊接头与传感器的主体（42）气密密封，陶瓷密封件（60）设置在其间。 钎焊接头可以包括缓冲材料层（79），该层向接头提供一定程度的延展性，以避免陶瓷密封构件的开裂。 钎焊的陶瓷/金属接头允许选择材料，使得不同的热膨胀效应可被动地最小化。 电极通过具有弹簧部分（53）的导线连接到传感器电路（84），从而提供无应力的互连。
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公开(公告)号：US5224383A
公开(公告)日：1993-07-06
申请号：US715915
申请日：1991-06-14
CPC分类号： G01L9/0072 , G01L19/0023 , G01L19/04 , G01L19/0681 , G01L9/125
摘要： The invention features a melt pressure measurement device for measuring the pressure of a melted substance useful in cooled state for forming solid objects. The device comprises a probe for insertion through an aperture in a wall of a melt-containing vessel, with the probe having a pressure-deflectable end surface for contact with pressurized melt. The probe has pressure-resistant securing means for fixing the probe in the wall with the end surface of the probe exposed for contact with the melt in a non-flow obstructive relationship. A seal surface on the probe between the end of the probe and the securing means provides cooperative sealing action with a mating sealing means associated with the wall to prevent exposure of the melt to the securing means. The probe also has pressure detection means internal of the probe, responsive to deflection of the end surface of the probe, for detecting pressure of the melt. The pressure detection means comprises a temperature-compensated capacitive sensor, with one plate of the capacitor defined by the end surface of the probe exposed to the melt and the opposite plate of the capacitor mounted within the probe. A capacitive gap is defined by the space between the end surface and the opposite plate. The probe also has electronic circuitry within a portion of the probe remote from the melt-exposed end of the probe and connected to the capacitor in a manner to compensate for change of temperature effects on the capacitor and to generate an output signal proportional to the melt pressure.
摘要翻译： 本发明的特征在于用于测量用于形成固体物体的冷却状态下熔融物质的压力的熔体压力测量装置。 该装置包括用于插入通过熔体容纳容器的壁中的孔的探针，探针具有用于与加压熔体接触的可压力偏转的端表面。 探针具有用于将探针固定在壁中的耐压固定装置，其中探针的端面暴露以与流体阻塞的关系与熔体接触。 在探针的端部和固定装置之间的探头上的密封表面与与壁相关联的配合密封装置提供协作的密封作用，以防止熔体暴露于固定装置。 探头还具有探针内部的压力检测装置，其响应于探针端表面的偏转，以检测熔体的压力。 压力检测装置包括温度补偿电容传感器，电容器的一个板由暴露于熔体的探针的端面和安装在探针内的电容器的相对板限定。 电容性间隙由端表面和相对板之间的空间限定。 该探头还具有位于探头远离熔融暴露端的一部分内的电子电路，并连接到电容器以补偿温度对电容器的影响的变化并产生与熔体成比例的输出信号 压力。
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