Pressure sensor having baffling means
    1.
    发明授权
    Pressure sensor having baffling means 失效
    压力传感器具有挡板装置

    公开(公告)号:US4920805A

    公开(公告)日:1990-05-01

    申请号:US268278

    申请日:1988-11-07

    摘要: The invention relates to a pressure sensor having a ceramic diaphragm which is exposed at one of opposite surfaces thereof to a measurement fluid in an external space and deformable in response to a pressure of the measurement fluid, and a strain detector for producing an electrical output representative of an amount of deformation of the ceramic diaphragm. The ceramic diaphragm is fixedly supported at an outer portion thereof, so that a central working portion of the diaphragm is deformable in response to the pressure of the measurement fluid applied thereto. The sensor includes a baffling structure disposed adjacent the above-indicated one surface of the ceramic diaphragm. The baffling structure has portions which partially define a chamber to which the above-indicated one surface of the ceramic diaphragm is exposed. The baffling structure has at least one communication hole for communication between the chamber and the external space, such that the central working portion of the ceramic diaphragm is protected against direct exposure to a straightforward flow of the measurement fluid from the external space toward the central working portion of the diaphragm.

    摘要翻译: 本发明涉及一种具有陶瓷膜片的压力传感器,该陶瓷膜片在其相对表面的一个表面暴露于外部空间中的测量流体并响应于测量流体的压力而变形;以及应变检测器,用于产生电输出代表 的陶瓷膜片的变形量。 陶瓷隔膜固定地支撑在其外部,使得隔膜的中心工作部分响应于施加到其上的测量流体的压力而变形。 传感器包括邻近陶瓷隔膜的上述一个表面设置的挡板结构。 挡板结构具有部分地限定陶瓷隔膜的上述一个表面暴露于的室的部分。 挡板结构具有用于腔室和外部空间之间的连通的至少一个连通孔,使得陶瓷膜片的中心工作部分被保护以免直接暴露于测量流体从外部空间向中心工作的直接流动 隔膜的一部分。

    Particle sensor that distinguishes between particles and bubbles in a
fluid
    2.
    发明授权
    Particle sensor that distinguishes between particles and bubbles in a fluid 失效
    颗粒传感器,用于区分流体中的颗粒和气泡

    公开(公告)号:US5920007A

    公开(公告)日:1999-07-06

    申请号:US855395

    申请日:1997-05-13

    摘要: A particle sensor includes a flow path of a fluid, having a fluid inlet and a fluid outlet, and a sensor element provided in said flow path, which comprises (a) a vibrating section having such a mass that is sensitive to the collision of solid particles contained in the fluid, with the vibrating section and (b) a detecting section for detecting the vibration of the vibrating section caused by said collision and converting the vibration to electric signals. The sensor has a means capable of selectively detecting any vibration of the vibrating section having a frequency higher than the primary resonance frequency of the sensor element. This particle sensor has improved sensitivity to solid particles and can distinguish the signals generated by collision of solid particles, from the signals generated by collision of bubbles, at a high accuracy.

    摘要翻译: 颗粒传感器包括具有流体入口和流体出口的流体的流动路径和设置在所述流动路径中的传感器元件,该传感器元件包括(a)具有这样的质量的振动部分,所述质量对于固体的碰撞敏感 包含在流体中的颗粒与振动部分和(b)检测部分,用于检测由所述碰撞引起的振动部分的振动并将振动转换成电信号。 传感器具有能够选择性地检测具有高于传感器元件的初级共振频率的频率的振动部分的任何振动的装置。 该颗粒传感器对固体颗粒具有改进的敏感性,并可以高精度地将由固体颗粒的碰撞产生的信号与气泡碰撞产生的信号区分开。

    Pressure sensor
    3.
    发明授权
    Pressure sensor 失效
    压力传感器

    公开(公告)号:US4916426A

    公开(公告)日:1990-04-10

    申请号:US234571

    申请日:1988-08-22

    IPC分类号: G01L9/00 G01L9/06

    摘要: A pressure sensor having a ceramic pressure sensing element including a bottom wall serving as a diaphragm, and a tubular wall which extends from a periphery of the bottom wall and cooperates with the bottom wall to define a cavity. The diaphragm has resistors formed thereon. The resistors are electrically connected to an external electric device by electrically conductive members. The sensing element is held in a housing by a retainer member such that one end of the retainer member is aligned with an end face of the tubular wall remote from the bottom wall. A biasing member is provided for biasing the retainer member toward the ceramic pressure sensing element, to exert a retaining force to the sensing element.

    摘要翻译: 一种具有陶瓷压力感测元件的压力传感器,其包括用作隔膜的底壁,以及从底壁的周边延伸并与底壁配合以形成空腔的管状壁。 隔膜具有形成在其上的电阻。 电阻器通过导电构件电连接到外部电气装置。 感测元件通过保持器构件保持在壳体中,使得保持器构件的一端与远离底壁的管状壁的端面对准。 偏置构件被设置用于朝向陶瓷压力感测元件偏置保持器构件,以将保持力施加到感测元件。

    Method for detection of solid particles in fluid and particle sensor
used in said method
    4.
    发明授权
    Method for detection of solid particles in fluid and particle sensor used in said method 失效
    用于检测所述方法中使用的流体和颗粒传感器中的固体颗粒的方法

    公开(公告)号:US5987972A

    公开(公告)日:1999-11-23

    申请号:US47118

    申请日:1998-03-24

    CPC分类号: G01N15/0255

    摘要: A method for detecting the solid particles contained in a fluid, by the use of a particle sensor having a flow path of a fluid, having a fluid inlet and a fluid outlet, and a sensor element provided in the flow path, which comprises (a) a vibrating section having such a mass that is sensitive to the collision of solid particles contained in the fluid, with the vibrating section and (b) a detecting section for detecting the vibration of the vibrating section caused by the collision and converting the vibration to electric signals. The method includes steps of: passing a fluid to be examined, through the particle sensor, selectively detecting, from the electric signals outputted from the particle sensor, an electric signal portion having particular frequencies ranging from 1/50 to 10 times the primary resonance frequency of the sensor element, measuring the maximum amplitude of the electric signal portion, comparing the maximum amplitude measured above, with a given value predetermined with the particle sensor based on (1) the maximum amplitude of a portion of the electric signals caused by the collision of solid particles contained in a fluid, having the above particular frequencies and (2) the maximum amplitude of a portion of the electric signals caused by the turbulent flow of the same fluid containing no solid particles, having the above particular frequencies, and judging, depending upon the result of the above comparison, whether or not the electric signals outputted from the particle sensor with the fluid to be examined have been caused by the collision of solid particles with the particle sensor.

    摘要翻译: 通过使用具有流体入口和流体出口的流体的流路的粒子传感器和设置在流路中的传感器元件,检测流体中包含的固体颗粒的方法,其包括(a )具有这样的质量的振动部分,其对包含在流体中的固体颗粒的碰撞敏感;以及(b)检测部分,用于检测由碰撞引起的振动部分的振动并将振动转换成 电信号。 该方法包括以下步骤:使被检查流体通过粒子传感器从粒子传感器输出的电信号中选择性地检测具有从+ E,fra 1/50 + EE到特定频率的电信号部分 测量传感器元件的初级共振频率的10倍,测量电信号部分的最大幅度,将上述测量的最大幅度与由粒子传感器预定的给定值进行比较,其基于(1)一部分的最大振幅 由具有上述特定频率的流体中包含的固体颗粒的碰撞引起的电信号和(2)由不含固体颗粒的相同流体的湍流引起的电信号的一部分的最大振幅,具有上述 特定频率,并且根据上述比较的结果判断从颗粒传感器输出的电信号是否为 待检查的流体是由固体颗粒与颗粒传感器的碰撞引起的。

    Piezoelectric/electrostrictive element, method of manufacturing piezoelectric/electrostrictive element, piezoelectric/electrostrictive device, and method of manufacturing piezoelectric/electrostrictive device
    6.
    发明授权
    Piezoelectric/electrostrictive element, method of manufacturing piezoelectric/electrostrictive element, piezoelectric/electrostrictive device, and method of manufacturing piezoelectric/electrostrictive device 失效
    压电/电致伸缩元件,压电/电致伸缩元件的制造方法,压电/电致伸缩器件以及制造压电/电致伸缩器件的方法

    公开(公告)号:US07348711B2

    公开(公告)日:2008-03-25

    申请号:US11263027

    申请日:2005-10-31

    IPC分类号: H01L41/08

    CPC分类号: H01L41/0831 H01L41/0946

    摘要: In piezoelectric/electrostrictive elements, electrode layers have respective ends projecting outwardly from an end face of a piezoelectric/electrostrictive layer on a side surface where the laminated state of the piezoelectric/electrostrictive layer and the electrode layers is exposed. The distance by which the ends project outwardly from the end face is equal to or smaller than one half of the thickness of the piezoelectric/electrostrictive layer between the electrode layers. The distance is preferably in a range from 0.5 μm to 2 μm.

    摘要翻译: 在压电/电致伸缩元件中,电极层具有从压电/电致伸缩层和电极层的层压状态暴露的侧面从压电/电致伸缩层的端面向外突出的端部。 端部从端面向外突出的距离等于或小于电极层之间的压电/电致伸缩层的厚度的一半。 该距离优选在0.5μm至2μm的范围内。

    PIEZOELECTRIC/ELECTROSTRICTIVE DEVICE AND METHOD OF DRIVING PIEZOELECTRIC/ELECTROSTRICTIVE DEVICE
    8.
    发明申请
    PIEZOELECTRIC/ELECTROSTRICTIVE DEVICE AND METHOD OF DRIVING PIEZOELECTRIC/ELECTROSTRICTIVE DEVICE 失效
    压电/电绝缘设备及驱动压电/电致器件的方法

    公开(公告)号:US20070132340A1

    公开(公告)日:2007-06-14

    申请号:US11566380

    申请日:2006-12-04

    IPC分类号: H02N2/00

    CPC分类号: H02N2/10 H01L41/0946

    摘要: A piezoelectric/electrostrictive device has a rotor substantially in the form of a rectangular parallelepiped, the rotor having a pair of opposite surfaces, a first movable section fixed to a first end of one of the surfaces, a first piezoelectric/electrostrictive element for actuating the first movable section, a second movable section fixed to a second end of the other one of the surfaces, the second end being diametrically opposite to the first end, and a second piezoelectric/electrostrictive element for actuating the second movable section.

    摘要翻译: 压电/电致伸缩器件具有基本上呈长方体形状的转子,转子具有一对相对的表面,固定到一个表面的第一端的第一可移动部分,用于致动该第一压电/电致伸缩元件 第一可移动部分,固定到另一个表面的第二端的第二可移动部分,第二端部与第一端部直径相对;以及第二压电/电致伸缩元件,用于致动第二可移动部分。

    Method of manufacturing a ceramic stack
    10.
    发明授权
    Method of manufacturing a ceramic stack 失效
    制造陶瓷叠层的方法

    公开(公告)号:US07062825B2

    公开(公告)日:2006-06-20

    申请号:US10862596

    申请日:2004-06-07

    IPC分类号: H04R17/00 C03B29/00 H01L41/04

    摘要: A method of producing a ceramic stack is provided, including the steps of providing at least a first ceramic green sheet to be formed into a long ceramic plate and having a principal surface, providing at least a second ceramic green sheet to be formed into a short ceramic plate and having a length that is less than a length of the principal surface of the first ceramic green sheet, and laminating the second ceramic green sheet to the principal surface of the first ceramic green sheet to form a ceramic green sheet laminate having a lamination border defined between at least a side surface of the second ceramic green sheet and the principal surface of the first ceramic green sheet. The method also includes the steps of forming a member having a curved surface at the lamination border by applying a paste to the lamination border such that the curved surface includes at least one inflection point when viewed in cross-section, and sintering the laminate into an integral unit to form the ceramic stack.

    摘要翻译: 提供一种生产陶瓷堆叠的方法,包括以下步骤:提供至少第一陶瓷生片,以形成长陶瓷板并具有主表面,至少提供形成短片的第二陶瓷生片 陶瓷板,其长度小于第一陶瓷生片的主表面的长度,并且将第二陶瓷生片层压到第一陶瓷生片的主表面,以形成具有层压的陶瓷生片叠层 边界限定在第二陶瓷生片的至少一个侧表面和第一陶瓷生片的主表面之间。 该方法还包括以下步骤:通过将糊料施加到层压边界来形成在层压边界处具有弯曲表面的构件,使得弯曲表面在横截面中观察时包括至少一个拐点,并将层压体烧结成 整体单元形成陶瓷叠层。