High temperature pressure transducer having a shaped ceramic face
    71.
    发明授权
    High temperature pressure transducer having a shaped ceramic face 有权
    具有成形陶瓷面的高温压力传感器

    公开(公告)号:US07462977B2

    公开(公告)日:2008-12-09

    申请号:US11100682

    申请日:2005-04-07

    IPC分类号: H01L41/08

    CPC分类号: G01L9/006 G01L9/06

    摘要: A high temperature pressure transducer includes an extended tubular member having an opening from a front to a back surface. The tubular member is preferably fabricated from a metal. At the front end of the tubular member is a ceramic sensor face or tip which basically is a ceramic disk having a curved front surface and having an extending stem and which is inserted into the front opening of the tubular member. The column is of a given length and terminates in a back end. The back end has a predetermined portion which consists of two flat surfaces each on opposite sides. The back end containing the flat surfaces is thinner than the thickness of the column. On these flat surfaces are positioned suitable semiconductor piezoresistors. When a force is applied to the ceramic sensor face, it is transmitted axially through the tube or column where it is received by the sensors positioned on the flats. The sensors produce an output indicative of the force applied. The sensors may be arranged in a suitable bridge configuration.

    摘要翻译: 高温压力传感器包括具有从前到后表面的开口的延伸的管状构件。 管状构件优选地由金属制成。 在管状构件的前端是陶瓷传感器面或尖端,其基本上是具有弯曲前表面并且具有延伸杆并且插入到管状构件的前开口中的陶瓷盘。 该列具有给定的长度并终止于后端。 后端具有预定的部分,其由相对侧上的两个平坦表面组成。 包含平坦表面的后端比柱的厚度薄。 在这些平坦表面上定位合适的半导体压敏电阻。 当力被施加到陶瓷传感器表面时,其被轴向地传递通过管或柱,其被定位在平面上的传感器所接收。 传感器产生指示施加的力的输出。 传感器可以布置成合适的桥结构。

    Hermetically sealed displacement sensor apparatus
    72.
    发明授权
    Hermetically sealed displacement sensor apparatus 有权
    气密位移传感器装置

    公开(公告)号:US07284444B2

    公开(公告)日:2007-10-23

    申请号:US11322721

    申请日:2005-12-30

    IPC分类号: G01L1/00

    CPC分类号: G01B7/18 G01L1/2231

    摘要: A hermetically sealed displacement sensor has strain gauges placed on thin flexible triangular shaped beams of a load beam cell. The strain gauges are enclosed in a hermetically sealed cavity which cavity is sealed by means of a cover plate placed over the load beam cell. The thin beams are connected together by a center hub and basically form two constant moment beams. There is a top isolation diaphragm member which is convoluted and to which a force is applied which applied force is transmitted to the thin flexible beams. The beams deflect and the sensors produce an output proportional to strain. The sensors on each beam are two in number wherein one sensor is placed in a longitudinal direction with respect to the beam while the other sensor is in a transverse position. The sensors may be wired to form a full Wheatstone bridge or half bridges may be employed. The electrical output from the strain gauge bridge is proportional to the deflection of the center of the sensor.

    摘要翻译: 密封位移传感器具有放置在负载梁单元的薄柔性三角形梁上的应变计。 应变计被封闭在密封的空腔中,该空腔通过放置在负载梁单元上的盖板密封。 薄梁通过中心毂连接在一起,基本上形成两个恒定力矩梁。 存在顶部的隔离膜构件,其被卷绕并且施加力,施加的力被传递到薄柔性梁。 光束偏转,传感器产生与应变成比例的输出。 每个光束上的传感器是两个,其中一个传感器相对于光束被放置在纵向方向上,而另一个传感器处于横向位置。 传感器可以被布线以形成完整的惠斯登电桥,或者可以采用半桥。 应变仪桥的电气输出与传感器中心的偏转成正比。

    Apparatus and method for eliminating varying pressure fluctuations in a pressure transducer
    73.
    发明授权
    Apparatus and method for eliminating varying pressure fluctuations in a pressure transducer 有权
    用于消除压力传感器中变化的压力波动的装置和方法

    公开(公告)号:US07921724B2

    公开(公告)日:2011-04-12

    申请号:US12574587

    申请日:2009-10-06

    IPC分类号: G01L9/06

    CPC分类号: G01L19/0609 G01L13/025

    摘要: A single pressure sensing capsule has a reference pressure ported to the rear side of a silicon sensing die. The front side of the silicon sensing die receives a main pressure at another port. The silicon sensing die contains a full Wheatstone bridge on one of the surfaces and within the active area designated as the diaphragm area. Thus, the difference of the main and reference pressure results in the sensor providing an output equivalent to the differential pressure, namely the main pressure minus the reference pressure which is the stress induced in a sensing diaphragm. In any event, the reference pressure or main pressure may be derived from a pump pressure which is being monitored. The pump pressure output is subjected to a pump ripple or a sinusoidally varying pressure. In order to compensate for pump ripple, one employs a coiled tube. The tube length is selected to suppress the pump ripple as applied to the sensor die. In this manner, the pump ripple cannot cause resonance which would result in pressure amplification and which pressure amplification would destroy the sensor.

    摘要翻译: 单个压力感测胶囊具有移动到硅感测裸片的后侧的参考压力。 硅感测模具的前侧在另一端口处接收主压力。 硅感测裸片在其中一个表面上以及指定为隔膜区域的有源区域内包含一个完整的惠斯通电桥。 因此,主要和参考压力的差异导致传感器提供与差压相当的输出,即主压力减去在感测膜片中感应的应力的参考压力。 无论如何,参考压力或主要压力可以从正被监测的泵压力导出。 泵压力输出受到泵波动或正弦变化的压力。 为了补偿泵波动,采用一个盘管。 选择管长度以抑制应用于传感器管芯的泵波动。 以这种方式,泵波动不会引起共振,这将导致压力放大,哪个压力放大会破坏传感器。

    Multiple axis load cell controller
    74.
    发明授权
    Multiple axis load cell controller 有权
    多轴称重传感器控制器

    公开(公告)号:US07743672B2

    公开(公告)日:2010-06-29

    申请号:US12157029

    申请日:2008-06-06

    IPC分类号: G01D7/00

    摘要: There is disclosed a multiple axis load cell or controller in which axial and torsion measurements are decoupled while maximizing the outputs of both measurements. The active member of the load cell is a wheel with dual beams as the spokes. The wheel thus has four spokes or four beam members, each spoke is a pair of rectangular cross-section beams, orthogonal to each other. The beams have strain gages on the wide surfaces which measure the bending strain which is proportional to torsion or the axial input. There is an inner beam section and an outer beam section associated with each spoke and orthogonal to each other. The outer beams have the wide surface normal to the axis of the load cell. This beam section is more sensitive to the axial tension/compression input. The inner beam sections have their wide surface parallel to the axis of the load cell and are much less sensitive to bending but are sensitive to torsion. Therefore when a torsion or twisting motion is applied to the load cell, the inner beams with their wide surface parallel to the axis of the wheel are more sensitive and bend more. These beams experience bending as a result of the torsion input and have strain gages formed in a Wheatstone bridge arrangement to provide an output proportional to the torsion. The outer beams also have gages mounted thereon which are also wired in a Wheatstone bridge configuration and which Wheatstone bridge output of these gages are proportional to the axial force.

    摘要翻译: 公开了一种多轴称重传感器或控制器,其中轴向和扭转测量被解耦,同时最大化两个测量的输出。 称重传感器的活动构件是具有双梁作为轮辐的车轮。 因此,车轮具有四个轮辐或四个梁构件,每个轮辐是一对彼此正交的矩形横截面梁。 梁在宽表面上具有应变计,其测量与扭转或轴向输入成比例的弯曲应变。 存在与每个辐条相关联并且彼此正交的内梁部分和外部梁部分。 外梁具有与测力传感器的轴线垂直的宽表面。 该梁部分对轴向张力/压缩输入更敏感。 内梁部分的宽表面平行于称重传感器的轴线,并且对弯曲敏感度较低,但对扭转敏感。 因此,当对称重传感器施加扭转或扭转运动时,具有与车轮轴线平行的宽表面的内梁更敏感并且弯曲得更多。 这些梁由于扭转输入而经历弯曲,并且在惠斯登电桥布置中形成应变计以提供与扭转成比例的输出。 外梁还具有安装在其上的规格,其也以惠斯通电桥配置布线,并且这些计量器的惠斯通电桥输出与轴向力成比例。

    APPARATUS AND METHOD FOR ELIMINATING VARYING PRESSURE FLUCTUATIONS IN A PRESSURE TRANSDUCER
    75.
    发明申请
    APPARATUS AND METHOD FOR ELIMINATING VARYING PRESSURE FLUCTUATIONS IN A PRESSURE TRANSDUCER 有权
    用于消除压力变送器中变化的压力波动的装置和方法

    公开(公告)号:US20100018319A1

    公开(公告)日:2010-01-28

    申请号:US12574587

    申请日:2009-10-06

    IPC分类号: G01L7/10 G01L9/06

    CPC分类号: G01L19/0609 G01L13/025

    摘要: A single pressure sensing capsule has a reference pressure ported to the rear side of a silicon sensing die. The front side of the silicon sensing die receives a main pressure at another port. The silicon sensing die contains a full Wheatstone bridge on one of the surfaces and within the active area designated as the diaphragm area. Thus, the difference of the main and reference pressure results in the sensor providing an output equivalent to the differential pressure, namely the main pressure minus the reference pressure which is the stress induced in a sensing diaphragm. In any event, the reference pressure or main pressure may be derived from a pump pressure which is being monitored. The pump pressure output is subjected to a pump ripple or a sinusoidally varying pressure. In order to compensate for pump ripple, one employs a coiled tube. The tube length is selected to suppress the pump ripple as applied to the sensor die. In this manner, the pump ripple cannot cause resonance which would result in pressure amplification and which pressure amplification would destroy the sensor.

    摘要翻译: 单个压力感测胶囊具有移动到硅感测裸片的后侧的参考压力。 硅感测模具的前侧在另一端口处接收主压力。 硅感测裸片在其中一个表面上以及指定为隔膜区域的有源区域内包含一个完整的惠斯通电桥。 因此,主要和参考压力的差异导致传感器提供与差压相当的输出,即主压力减去在感测膜片中感应的应力的参考压力。 无论如何,参考压力或主要压力可以从正被监测的泵压力导出。 泵压力输出受到泵波动或正弦变化的压力。 为了补偿泵波动,采用一个盘管。 选择管长度以抑制应用于传感器管芯的泵波动。 以这种方式,泵波动不会引起共振,这将导致压力放大,哪个压力放大会破坏传感器。

    Beam accelerometer with limiting apparatus

    公开(公告)号:US20090071250A1

    公开(公告)日:2009-03-19

    申请号:US11901021

    申请日:2007-09-14

    IPC分类号: G01P15/12

    CPC分类号: G01P15/123 G01P1/023

    摘要: An accelerometer includes a cantilever mass with a thin beam element between the mass and the fixed end of the accelerometer. The end of the mass is tapered. A limiting member has an aperture that is tapered corresponding to the taper at the end of the mass and positioned to surround the tapered end of the seismic mass. The beam accelerometer as well as the limiting member is placed in a cylindrical housing whereby the limiting member is moved along the taper of the seismic mass to adjust the spacing between the limiting member and the inner wall of the housing to thereby adjust the amount of movement of the seismic mass. In one embodiment the aperture of the tapered limited member also surrounds the seismic mass but the gap between the inner wall of the tapered limiting member and the outer wall of the seismic mass is adjusted to determine the amount of movement of the beam. In this manner, one can utilize a beam accelerometer arrangement of a cylindrical configuration within a housing and whereby the seismic mass has a taper and the taper coacts with a limiting member which has a corresponding taper to adjust the distance that the beam can move upon application of a force thereto.

    High pressure transducer having an H shaped cross-section
    77.
    发明授权
    High pressure transducer having an H shaped cross-section 失效
    具有H形横截面的高压传感器

    公开(公告)号:US07661317B2

    公开(公告)日:2010-02-16

    申请号:US11825089

    申请日:2007-07-03

    IPC分类号: G01L7/00

    CPC分类号: G01L9/0055

    摘要: A high pressure transducer has an H shaped cross-section with a center arm of the H having a top and bottom surface with the top surface of the H accommodating four strain gauges. Two strain gauges are located at the center of the top portion of the center arm of the H and are positive strain gauges, while two strain gauges are located near the periphery of the center arm of the gauge. The bottom surface of the center arm of the gauge has an active area of a smaller diameter than the circular diameter of the center arm portion of the transducer. The smaller active area is surrounded by a thicker stepped area which surrounds an active area on the pressure side of the H shaped member. The surrounding stepped area enables one to position the two negative strain gauges on the opposite surface of the center arm and near the periphery to thereby cause the negative gauges to respond to a negative stresses and therefore to enable one to provide a full Wheatstone bridge which includes the two positive strain gauges located at the center of the center arm of the H and the two negative peripheral gauges.

    摘要翻译: 高压传感器具有H形横截面,H的中心臂具有顶部和底部表面,H的顶部表面容纳四个应变计。 两个应变计位于H中心臂顶部的中心,是正应变片,而两个应变计位于仪表中心臂周边附近。 量规的中心臂的底面具有比换能器的中心臂部的圆形直径小的有效面积。 较小的活动区域被围绕H形构件的压力侧上的有效区域的较厚的台阶区域包围。 周围的阶梯区域使得能够将两个负应变计定位在中心臂的相对表面上并且在周边附近,从而使负的量规响应于负应力,并且因此使得能够提供一个完整的惠斯通电桥,其包括 位于H中心臂中心的两个正应变计和两个负外围量规。

    Multiple axis load cell controller
    78.
    发明申请
    Multiple axis load cell controller 有权
    多轴称重传感器控制器

    公开(公告)号:US20090301217A1

    公开(公告)日:2009-12-10

    申请号:US12157029

    申请日:2008-06-06

    IPC分类号: G01N3/22

    摘要: There is disclosed a multiple axis load cell or controller in which axial and torsion measurements are decoupled while maximizing the outputs of both measurements. The active member of the load cell is a wheel with dual beams as the spokes. The wheel thus has four spokes or four beam members, each spoke is a pair of rectangular cross-section beams, orthogonal to each other. The beams have strain gages on the wide surfaces which measure the bending strain which is proportional to torsion or the axial input. There is an inner beam section and an outer beam section associated with each spoke and orthogonal to each other. The outer beams have the wide surface normal to the axis of the load cell. This beam section is more sensitive to the axial tension/compression input. The inner beam sections have their wide surface parallel to the axis of the load cell and are much less sensitive to bending but are sensitive to torsion. Therefore when a torsion or twisting motion is applied to the load cell, the inner beams with their wide surface parallel to the axis of the wheel are more sensitive and bend more. These beams experience bending as a result of the torsion input and have strain gages formed in a Wheatstone bridge arrangement to provide an output proportional to the torsion. The outer beams also have gages mounted thereon which are also wired in a Wheatstone bridge configuration and which Wheatstone bridge output of these gages are proportional to the axial force.

    摘要翻译: 公开了一种多轴称重传感器或控制器,其中轴向和扭转测量被解耦,同时最大化两个测量的输出。 称重传感器的活动构件是具有双梁作为轮辐的车轮。 因此,车轮具有四个轮辐或四个梁构件,每个轮辐是一对彼此正交的矩形横截面梁。 梁在宽表面上具有应变计,其测量与扭转或轴向输入成比例的弯曲应变。 存在与每个辐条相关联并且彼此正交的内梁部分和外部梁部分。 外梁具有与测力传感器的轴线垂直的宽表面。 该梁部分对轴向张力/压缩输入更敏感。 内梁部分的宽表面平行于称重传感器的轴线,并且对弯曲敏感度较低,但对扭转敏感。 因此,当对称重传感器施加扭转或扭转运动时,具有与车轮轴线平行的宽表面的内梁更敏感并且弯曲得更多。 这些梁由于扭转输入而经历弯曲,并且在惠斯登电桥布置中形成应变计以提供与扭转成比例的输出。 外梁还具有安装在其上的规格,其也以惠斯通电桥配置布线,并且这些计量器的惠斯通电桥输出与轴向力成比例。

    Joystick sensor apparatus
    79.
    发明申请
    Joystick sensor apparatus 有权
    操纵杆传感器装置

    公开(公告)号:US20090229378A1

    公开(公告)日:2009-09-17

    申请号:US12380630

    申请日:2009-03-02

    IPC分类号: G01D7/00

    CPC分类号: G01L5/223 G05G2009/04762

    摘要: A joystick apparatus employs a hermetically sealed load cell having strain gauges placed on flexible beams formed on the load cell. All of the strain gauges are on the same surface of the load cell and therefore wiring is performed on a single side of the load cell. The strain gauges are enclosed in hermetically sealed cavity. The sensing diaphragm consists of a concentric thick inner and outer section joined by thinner diametrically opposed beam elements. The thin beam elements are compliant members which can deflect. Each beam includes strain gauges or sensor elements and the load cell is coupled to a joystick which when moved causes the beams to deflect to cause the sensor elements to produce an electrical output proportional to the force and direction of the joystick. The sensor can yield an output proportional to any angle over the 360° movement of the joystick to provide outputs proportional to the X and Y positions of said joystick. Thus, the joystick arrangement can resolve any angle or force into X and Y components for full directional control.

    摘要翻译: 操纵杆装置采用密封的称重传感器,该测力传感器具有放置在测力传感器上形成的柔性梁上的应变仪。 所有的应变计位于测力传感器的相同表面上,因此在测力传感器的单侧进行接线。 应变计封闭在密封的空腔中。 传感膜片由同心厚的内部和外部部分组成,该部分与较细直径相对的梁元件连接。 薄梁元件是能够偏转的柔顺构件。 每个梁包括应变计或传感器元件,并且测力传感器耦合到操纵杆,当操作杆被移动时,导致梁偏转以使传感器元件产生与操纵杆的力和方向成比例的电输出。 传感器可以产生与操纵杆360°运动的任何角度成比例的输出,以提供与所述操纵杆的X和Y位置成比例的输出。 因此,操纵杆装置可以将任何角度或力分解成X和Y部件以进行全方位控制。

    Joystick sensor apparatus
    80.
    发明申请

    公开(公告)号:US20090007684A1

    公开(公告)日:2009-01-08

    申请号:US11824920

    申请日:2007-07-03

    IPC分类号: G01B7/16

    CPC分类号: G01L5/223 G05G2009/04762

    摘要: A joystick apparatus employs a hermetically sealed load cell having strain gauges placed on flexible beams formed on the load cell. All of the strain gauges are on the same surface of the load cell and therefore wiring is performed on a single side of the load cell. The strain gauges are enclosed in hermetically sealed cavity. The sensing diaphragm consists of a concentric thick inner and outer section joined by thinner diametrically opposed beam elements. The thin beam elements are compliant members which can deflect. Each beam includes strain gauges or sensor elements and the load cell is coupled to a joystick which when moved causes the beams to deflect to cause the sensor elements to produce an electrical output proportional to the force and direction of the joystick. The sensor can yield an output proportional to any angle over the 360° movement of the joystick to provide outputs proportional to the X and Y positions of said joystick. Thus, the joystick arrangement can resolve any angle or force into X and Y components for full directional control.