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公开(公告)号：US20060150743A1
公开(公告)日：2006-07-13
申请号：US11034440
申请日：2005-01-11
IPC分类号： G01B7/16
摘要： A sensor assembly for measuring force along an axis (F) comprises an inductance coil extending around the axis (F) for establishing a loop of magnetic flux looping axially through the coil and extending around the axis (F) to define a donut shaped ring of magnetic flux surrounding the axis (F). A core of magnetostrictive material provides a primary path for the magnetic flux in a first portion of the loop of magnetic flux and a magnetic carrier provides a return path for magnetic flux in a second portion of the loop of magnetic flux as the magnetic flux circles the coil through the core and the carrier. A first interface extends radially between the core and the carrier whereby the core and the carrier are urged together at the interface in response to a force applied parallel to the axis (F). Various embodiments or combinations of the core and carrier are illustrated in FIGS. 3-7.
摘要翻译： 用于沿轴线（F）测量力的传感器组件包括围绕轴线（F）延伸的电感线圈，用于沿轴线（F）绕轴线（F）建立一个环绕磁通量的环路，并且围绕轴线（F）延伸以形成环形环 围绕轴线（F）的磁通量。 磁致伸缩材料的核心提供磁通环路的第一部分中的磁通量的主路径，并且磁性载体在磁通环路的第二部分中提供用于磁通量的返回路径， 线圈通过芯和载体。 第一界面在芯体和载体之间径向延伸，由此芯体和载体响应于平行于轴线（F）施加的力而在界面处被推动在一起。 图1和图2中示出了芯和载体的各种实施例或组合。 3 - 7。
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公开(公告)号：US20070080680A1
公开(公告)日：2007-04-12
申请号：US11244792
申请日：2005-10-06
IPC分类号： G01R33/18
CPC分类号： G01L1/125
摘要： An apparatus, sensor, and a method for measuring an applied strain are provided. The apparatus includes a strain sensor comprising an electrically conductive member composed of a magnetostrictive material. The apparatus further includes a signal generator electrically coupled to the electrically conductive member. The signal generator is configured to generate an electrical current that propagates through the electrically conductive member. The apparatus further includes a measuring circuit electrically coupled to the electrically conductive member. The measuring circuit is configured to measure at least one of an amount of inductance, resistance, and impedance of the electrically conductive member. The apparatus further includes a processor electrically coupled to the measuring circuit. The processor is configured to calculate the amount of force applied to the strain sensor based on at least one of the amount of inductance, resistance, and impedance of the electrically conductive member.
摘要翻译： 提供了一种用于测量施加应变的装置，传感器和方法。 该装置包括应变传感器，其包括由磁致伸缩材料构成的导电构件。 该装置还包括电耦合到导电构件的信号发生器。 信号发生器被配置为产生传播通过导电构件的电流。 该装置还包括电耦合到导电构件的测量电路。 测量电路被配置为测量导电构件的电感，电阻和阻抗的量中的至少一个。 该装置还包括电耦合到测量电路的处理器。 处理器被配置为基于导电构件的电感，电阻和阻抗的量中的至少一个来计算施加到应变传感器的力的量。
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公开(公告)号：US20070096724A1
公开(公告)日：2007-05-03
申请号：US11256483
申请日：2005-10-21
申请人： Larry Oberdier , Thaddeus Schroeder , Robert Disser , Tina Dewar , Thomas Baudendistel , Bruno Lequesne , Donald Morelli
发明人： Larry Oberdier , Thaddeus Schroeder , Robert Disser , Tina Dewar , Thomas Baudendistel , Bruno Lequesne , Donald Morelli
IPC分类号： G01R33/18
摘要： An apparatus (10) is set forth for measuring a return signal of a magnetostrictive sensor (20) that detects a force, torque, or pressure. The return signal includes noise, a DC resistance (44), an AC resistance and an inductance and the inductance is shifted ninety degrees from the AC resistance. The apparatus (10) includes a sensor filter (22) to remove the noise from the return signal. A sensor filter (22) shifts the return signal and more specifically, the inductance by an additional angle and the sum of the additional angle and the ninety degrees phase shift is defined as the final detection angle. To detect the inductance at the final detection angle, a wave filter (16) and a reference filter (28) shifts a reference signal by the final detection angle to trigger a first demodulator (26) to detect the inductance at the final detection angle. The inductance detected by the first demodulator (26) varies due to temperature. To remove the temperature from the measured inductance, the apparatus includes a DC detection circuit (42) to detect the DC resistance which is proportional to the temperature across the sensor (20). The DC resistance and the measure inductance are inserted into a correction equation to produce a corrected inductance which is independent of temperature. Instead of inductance, an AC resistance may be used in the equation.
摘要翻译： 提出了一种用于测量检测力，扭矩或压力的磁致伸缩传感器（20）的返回信号的装置（10）。 返回信号包括噪声，直流电阻（44），交流电阻和电感，电感从交流电阻偏移九十度。 装置（10）包括用于从返回信号中去除噪声的传感器滤波器（22）。 传感器滤波器（22）将返回信号更具体地将电感移位一个额外的角度，并将附加角和90度相移之和定义为最终检测角度。 为了在最终检测角度检测电感，滤波器（16）和参考滤波器（28）将参考信号移位最终检测角度，以触发第一解调器（26）以检测最终检测角度的电感。 由第一解调器（26）检测的电感由于温度而变化。 为了从测量的电感中去除温度，该装置包括一个DC检测电路（42），用于检测与传感器（20）两端的温度成比例的直流电阻。 将直流电阻和测量电感插入到校正方程中以产生与温度无关的校正电感。 代替电感，可以在等式中使用AC电阻。
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公开(公告)号：US20050229712A1
公开(公告)日：2005-10-20
申请号：US10827803
申请日：2004-04-20
CPC分类号： G01L9/16
摘要： A magnetostrictive fluid-pressure sensor includes annular inner and outer cylinders, a first connector, annular second and third connectors, and first and second coils. The inner cylinder surrounds a fluid-receiving bore. At least one of the cylinders is a magnetostrictive cylinder. The first connector connects the first ends of the cylinders and has a first portion extending radially inward of the inner cylinder. The second connector connects the second ends of the cylinders and defines a fluid inlet. The third connector connects the cylinders and is positioned longitudinally between the first and second connectors. The first coil is positioned radially between the inner and outer cylinders and longitudinally between the first and third connectors. The second coil is positioned radially between the inner and outer cylinders and longitudinally between the second and third connectors.
摘要翻译： 磁致伸缩流体压力传感器包括环形内圆筒和外圆筒，第一连接器，环形第二和第三连接器以及第一和第二线圈。 内筒围绕流体接收孔。 至少一个气缸是磁致伸缩缸。 第一连接器连接气缸的第一端并且具有从内筒径向向内延伸的第一部分。 第二连接器连接气缸的第二端并限定流体入口。 第三连接器连接气缸并纵向定位在第一和第二连接器之间。 第一线圈径向地定位在内筒和外筒之间，并且纵向地位于第一和第三连接器之间。 第二线圈径向地位于内筒和外筒之间，纵向位于第二和第三连接器之间。
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公开(公告)号：US20060086191A1
公开(公告)日：2006-04-27
申请号：US10973011
申请日：2004-10-25
IPC分类号： G01B7/16
摘要： A magnetostrictive strain sensor (10) includes a magnetostrictive core (12) comprising a magnetostrictive material, such as a nickel-iron alloy, able to conduct a magnetic flux and whose permeability is alterable by application of a strain. A conductive coil (14) is proximate the magnetostrictive core (12) to generate the magnetic flux when electrically excited. A shell (16) surrounds the conductive coil (14) and the magnetostrictive core (12) for providing a conductive return path for the magnetic flux. An excitation source (18) is electrically connected to the conductive coil (14) for electrically exciting the conductive coil (14) with an alternating current having a constant magnitude. An in-phase voltage circuit (22) is electrically connected across the conductive coil (14). The in-phase voltage circuit (22) senses an in-phase voltage that is in-phase with the alternating current. The in-phase voltage varies correspondingly to the strain subjected to the magnetostrictive core (12). A processor (24) is operatively connected to the in-phase voltage circuit (22) to determine the strain applied to said magnetostrictive core (12) by comparing the in-phase voltage to a predetermined relationship between strain and in-phase voltage.
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公开(公告)号：US20090107260A1
公开(公告)日：2009-04-30
申请号：US11977254
申请日：2007-10-24
IPC分类号： G01L3/10
CPC分类号： G01L9/16
摘要： In one embodiment, a sensor assembly has a magnetostrictive (MS) element and a sensor housing defining at least one active wall. A sensor channel is disposed on a first side of the active wall, with the MS element being disposed in the sensor channel and closely received therein. A fluid is on a second side of the active wall, and the active wall is the wall through which stress from pressure of the fluid causes stress on the MS element. The sensor channel defines an axis parallel to the active wall, and the MS element is positioned adjacent the active wall by sliding the MS element into an end of the sensor channel in a direction parallel to the active wall.
摘要翻译： 在一个实施例中，传感器组件具有限定至少一个活动壁的磁致伸缩（MS）元件和传感器外壳。 传感器通道设置在有源壁的第一侧上，MS元件设置在传感器通道中并且紧密地接收在其中。 流体位于活性壁的第二侧上，活性壁是通过流体压力产生的应力引起MS元件上的应力的壁。 传感器通道限定平行于活动壁的轴，并且MS元件通过沿着平行于活动壁的方向将MS元件滑动到传感器通道的端部中而邻近有源壁定位。
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7.发明申请Means and method of sensing pressure using magnetostrictive electrical condutors 审中-公开使用磁致伸缩电气换能器检测压力的方法和方法公开(公告)号：US20090107249A1
公开(公告)日：2009-04-30
申请号：US11977322
申请日：2007-10-24
IPC分类号： G01L1/00
CPC分类号： G01L9/16
摘要： In one embodiment, a sensor assembly has a sensor housing forming a fluid chamber and a magnetostrictive wire that undergoes stress induced by fluid in the chamber. The wire defines opposed ends, each being associated with a respective terminal. Respective hermetic seals penetrate the housing and are coupled to the respective terminals.
摘要翻译： 在一个实施例中，传感器组件具有形成流体室的传感器壳体和经受腔室中的流体引起的应力的磁致伸缩导线。 线定义相对的端部，每个端子与相应的端子相关联。 各个气密密封件穿透壳体并联接到相应的端子。
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8.发明申请System and method for sensing angular position using ring magnet with sensor in flux return path 审中-公开在磁通返回路径中使用环形磁体和传感器检测角位置的系统和方法公开(公告)号：US20050151534A1
公开(公告)日：2005-07-14
申请号：US10754026
申请日：2004-01-08
CPC分类号： G01D5/145
摘要： A Hall effect sensor is positioned in the return lines of the magnetic flux of a ring magnet that is engaged with a rotating member the angular position of which is sought to be measured. The signal from the Hall sensor indicates the angular position of the rotating member.
摘要翻译： 霍尔效应传感器位于环形磁铁的磁通量的返回线中，该环形磁体与其角度位置被测量的旋转构件接合。 来自霍尔传感器的信号表示旋转部件的角度位置。
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公开(公告)号：US20080282812A1
公开(公告)日：2008-11-20
申请号：US11803550
申请日：2007-05-15
申请人： Thaddeus Schroeder , Bruno Lequesne
发明人： Thaddeus Schroeder , Bruno Lequesne
CPC分类号： G01L1/127 , G01L1/125 , Y10T29/49009
摘要： This invention relates to a load sensor comprising a member composed of electrically conductive magnetostrictive material. The member is a uniform and continuous distribution of wire or strip material abutting itself between opposite ends. The magnetostrictive material is annealed and abutting portions of the member are spaced apart from one another using insulation incorporating microspheres. Terminals at different portions of the member allow the member to be electrically connected in a circuit for measuring an impedance of the member. Stress applied along an axis of the member causes a change in the member's permeability that is measurable as a change in impedance of the sensor. The configuration of the sensor can be described as coil shaped or accordion shaped. The wire or strip material comprising the sensor comprise a variety of shapes. Insulation comprises a high strength adhesive filled with high strength ceramic microspheres. A method is also taught in the present application to fabricate the load sensor of the present invention.
摘要翻译： 本发明涉及一种负载传感器，其包括由导电性磁致伸缩材料构成的构件。 该构件是在相对端之间自身邻接的线或条带材料的均匀且连续的分布。 该磁致伸缩材料被退火，并且使用包含微球的绝缘体，该构件的邻接部分彼此间隔开。 构件的不同部分处的端子允许构件在用于测量构件的阻抗的电路中电连接。 沿着构件的轴施加的应力导致构件的渗透性的变化，其可以作为传感器的阻抗的变化而被测量。 传感器的结构可以描述为线圈形或手风琴形状。 包括传感器的线或条材料包括各种形状。 绝缘包括填充有高强度陶瓷微球的高强度粘合剂。 在本申请中还教导了制造本发明的负载传感器的方法。
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公开(公告)号：US20080216582A1
公开(公告)日：2008-09-11
申请号：US11713961
申请日：2007-03-05
CPC分类号： G01L1/125
摘要： A system for measuring stress including a coilless sensor including at least one band of electrically conductive and magnetostrictive material, the band having a first end and a second end defining a gap therebetween, a measuring circuit electrically connected to the first and second ends of the coilless sensor, the measuring circuit being configured to pass a current through the coilless sensor and measure at least one of an inductance, a resistance and an impedance of the coilless sensor in response to the current, and a processor in electrical communication with the measuring circuit, the processor being configured to calculate an amount of stress being applied to the coilless sensor based upon the measured inductance, resistance and impedance.
摘要翻译： 一种用于测量应力的系统，包括无电感传感器，其包括至少一个导电和磁致伸缩材料带，所述带具有第一端和限定其间的间隙的第二端;测量电路，电连接到无铁芯的第一和第二端 传感器，所述测量电路被配置为使电流通过所述无芯焊传感器并响应于所述电流测量所述无连续传感器的电感，电阻和阻抗中的至少一个，以及与所述测量电路电连通的处理器， 所述处理器被配置为基于所测量的电感，电阻和阻抗来计算施加到所述无芯体传感器的应力的量。
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