Low pass filter semiconductor structures for use in transducers for measuring low dynamic pressures in the presence of high static pressures
    1.
    发明申请
    Low pass filter semiconductor structures for use in transducers for measuring low dynamic pressures in the presence of high static pressures 有权
    用于传感器的低通滤波器半导体结构,用于在存在高静压的情况下测量低动态压力

    公开(公告)号:US20050235754A1

    公开(公告)日:2005-10-27

    申请号:US11100652

    申请日:2005-04-07

    IPC分类号: G01L7/08 G01L13/02 G01L19/06

    摘要: A semiconductor filter is provided to operate in conjunction with a differential pressure transducer. The filter receives a high and very low frequency static pressure attendant with a high frequency low dynamic pressure at one end, the filter operates to filter said high frequency dynamic pressure to provide only the static pressure at the other filter end. A differential transducer receives both dynamic and static pressure at one input port and receives said filtered static pressure at the other port where said transducer provides an output solely indicative of dynamic pressure. The filter in one embodiment has a series of etched channels directed from an input end to an output end. The channels are etched pores of extremely small diameter and operate to attenuate or filter the dynamic pressure. In another embodiment, a spiral tubular groove is found between a silicon wafer and a glass cover wafer, an input port of the groove receives both the static and dynamic pressure with an output port of the groove providing only static pressure. The groove filters attenuate dynamic pressure to enable the differential transducer to provide an output only indicative of dynamic pressure by cancellation of the static pressure.

    摘要翻译: 提供半导体滤波器以与差压传感器一起操作。 过滤器在一端接收高频,低频静压泵,其一端具有高频低动态压力,滤波器用于过滤所述高频动态压力,仅提供另一滤芯端的静压力。 差分换能器在一个输入端口处接收动态和静态压力,并且在另一端口处接收所述过滤的静态压力,其中所述换能器提供仅指示动态压力的输出。 一个实施例中的滤波器具有从输入端指向输出端的一系列蚀刻通道。 通道是非常小直径的蚀刻孔,用于衰减或过滤动态压力。 在另一个实施例中,在硅晶片和玻璃盖晶片之间发现螺旋管状沟槽,槽的输入端口接收静态压力和动态压力,而槽的输出端口仅提供静态压力。 沟槽滤波器衰减动态压力,使得差分换能器仅通过消除静压来提供仅指示动态压力的输出。

    Quantum dot based pressure switch
    2.
    发明申请
    Quantum dot based pressure switch 失效
    基于量子点的压力开关

    公开(公告)号:US20070108434A1

    公开(公告)日:2007-05-17

    申请号:US11281093

    申请日:2005-11-17

    IPC分类号: H01L29/06 H01L31/00

    摘要: A semiconductor heterostructure based pressure switch comprising: first and second small bandgap material regions separated by a larger bandgap material region; a third small bandgap material region within the region of larger bandgap material, the third material region and larger bandgap material region defining at least one quantum dot; and, first and second electrodes electrically coupled to the first and second small bandgap material regions, respectively, wherein the electrodes are sufficiently proximate to said quantum dot to facilitate electron tunneling there between when a pressure is applied to the bandgap material defining the quantum dot.

    摘要翻译: 一种基于半导体异质结构的压力开关,包括:由较大带隙材料区域分隔的第一和第二小带隙材料区域; 在较大带隙材料的区域内的第三小带隙材料区域,第三材料区域和限定至少一个量子点的较大带隙材料区域; 以及分别电耦合到第一和第二小带隙材料区域的第一和第二电极,其中当将压力施加到限定量子点的带隙材料时,电极足够靠近所述量子点以促进电子隧穿。

    System and method for determining flow characteristics
    3.
    发明申请
    System and method for determining flow characteristics 有权
    用于确定流量特性的系统和方法

    公开(公告)号:US20060060001A1

    公开(公告)日:2006-03-23

    申请号:US11009561

    申请日:2004-12-10

    IPC分类号: G01F1/46

    CPC分类号: G01F1/46

    摘要: A fluid flow probe including: first, second and third pressure sensors; a first port for communicating a first pressure to the first pressure sensor; a second port for communicating a second pressure to the second pressure sensor, the second port being substantially oppositely disposed with respect to the first port, a third pressure port suitable for communicating a static pressure to the third pressure sensor; first and second outputs electrically coupled to the first and second pressure sensors, respectively, one of the first and second outputs indicative of a total pressure and the other of the outputs indicative of a base pressure; and, a third output electrically coupled to the third pressure sensor and indicative of the static pressure.

    摘要翻译: 一种流体流动探针,包括:第一,第二和第三压力传感器; 用于将第一压力传送到第一压力传感器的第一端口; 第二端口,用于将第二压力传递到第二压力传感器,第二端口相对于第一端口基本上相对设置;适于将静压连通到第三压力传感器的第三压力端口; 第一和第二输出分别电耦合到第一和第二压力传感器,第一和第二输出中的一个指示总压力,另一个输出指示基本压力; 以及电连接到第三压力传感器并指示静压力的第三输出。

    Method and system for determining gas turbine tip clearance
    4.
    发明申请
    Method and system for determining gas turbine tip clearance 失效
    确定燃气轮机顶端间隙的方法和系统

    公开(公告)号:US20050286995A1

    公开(公告)日:2005-12-29

    申请号:US11063205

    申请日:2005-02-22

    IPC分类号: F01D1/00 F01D11/06 F01D11/20

    摘要: A system for sensing at least one physical characteristic associated with an engine including a turbine having a plurality of blades turning inside a casing, the system including: a pressure sensor coupled substantially adjacent to the casing and including at least one output; a port in the turbine casing for communicating a pressure indicative of a clearance between the blades and casing to the pressure sensor; a cooling cavity substantially surrounding the pressure sensor; and, an inlet for receiving fluid from the engine and feeding the fluid to the cooling cavity to cool the pressure sensor; wherein, the pressure sensor output is indicative of the clearance between the blades and casing.

    摘要翻译: 一种用于感测与发动机相关联的至少一个物理特性的系统,包括具有在壳体内部转动的多个叶片的涡轮机,所述系统包括:压力传感器,其基本上与壳体相邻并且包括至少一个输出; 涡轮壳体中的端口,用于将指示叶片和壳体之间的间隙的压力传递到压力传感器; 基本上围绕压力传感器的冷却腔; 以及用于从发动机接收流体并将流体供给到冷却腔以冷却压力传感器的入口; 其中,压力传感器输出表示叶片和壳体之间的间隙。

    Micromachined optical pressure sensor
    5.
    发明申请
    Micromachined optical pressure sensor 失效
    微加工光学压力传感器

    公开(公告)号:US20060023988A1

    公开(公告)日:2006-02-02

    申请号:US11014007

    申请日:2004-12-16

    IPC分类号: G02B6/00

    摘要: A pressure sensor including: a deflectable diaphragm including a substantially central boss and channel; and, an optical waveguide having first and second arms, wherein the first arm is substantially aligned with an edge of the boss and the second arm is substantially aligned with an edge of the channel.

    摘要翻译: 一种压力传感器,包括:可偏转隔膜,其包括基本中心的凸台和通道; 以及具有第一和第二臂的光波导,其中所述第一臂基本上与所述凸台的边缘对齐,并且所述第二臂基本上与所述通道的边缘对准。

    SYSTEM FOR DETECTING AND COMPENSATING FOR AERODYNAMIC INSTABILITIES IN TURBO-JET ENGINES
    8.
    发明申请
    SYSTEM FOR DETECTING AND COMPENSATING FOR AERODYNAMIC INSTABILITIES IN TURBO-JET ENGINES 有权
    用于涡轮喷气发动机的气动性不稳定性检测和补偿系统

    公开(公告)号:US20060288703A1

    公开(公告)日:2006-12-28

    申请号:US11023035

    申请日:2004-12-23

    IPC分类号: F02C7/00

    摘要: The present invention relates to a system for detecting aerodynamic instabilities in a jet turbine engine having a pressure transducer mounted in the engine. The pressure transducer, welded to a circuit in signal communication with a controller, is adapted to send measured pressure readings from air in a combustion chamber to the controller. The controller, located in spaced apart relation from the engine, is adapted by software to detect pressure patterns from the pressure signals generated by the transducer that are indicative of a stall or surge. A series of fuel and air valves located with compression and combustion chambers of the engine are in signal communication with the controller. The controller in response to detecting pressure signals indicating a stall or surge is operative to signals in the valves to change the air flow, air angle, fuel flow or speed to reduce the possibility of a stall or surge.

    摘要翻译: 本发明涉及一种用于检测具有安装在发动机中的压力传感器的喷气涡轮发动机中的空气动力学不稳定性的系统。 焊接到与控制器进行信号通信的电路的压力传感器适于将测量的压力读数从燃烧室中的空气发送到控制器。 与发动机间隔开的关系的控制器通过软件进行调节,以检测由换能器产生的指示失速或喘振的压力信号的压力模式。 位于发动机的压缩和燃烧室的一系列燃料和空气阀与控制器信号通信。 响应于检测到指示失速或喘振的压力信号,控制器可操作以在阀中发出信号以改变空气流量,气流角度,燃料流量或速度,以减少失速或喘振的可能性。

    Resonating transducer
    9.
    发明申请
    Resonating transducer 有权
    谐振换能器

    公开(公告)号:US20060150740A1

    公开(公告)日:2006-07-13

    申请号:US11030858

    申请日:2005-01-07

    申请人: Anthony Kurtz

    发明人: Anthony Kurtz

    IPC分类号: G01L11/00

    CPC分类号: G01L9/0016

    摘要: A resonating pressure transducer operable to measure an applied pressure by measuring changes in a resonant frequency is disclosed. The pressure transducer comprises a plurality of diaphragms formed in a wafer of semi-conducting material between two layers, wherein each of the diaphragms is divided into a plurality of electrically isolated sections; a cavity in one of the covering layers opposite a corresponding one of the diaphragms, a first via formed through a selected one of the layers enables application of a potential to selected ones of the diaphragm sections; and a second via formed through a selected one of the layers enables transmission of a measure from selected ones of the diaphragm sections.

    摘要翻译: 公开了一种谐振压力传感器,其可操作以通过测量谐振频率的变化来测量施加的压力。 压力传感器包括形成在两层之间的半导体材料晶片中的多个隔膜,其中每个隔膜被分成多个电隔离部分; 与相应的一个膜片相对的一个覆盖层中的一个空腔,通过所选择的一个层形成的第一通孔使得能够对所选择的隔膜部分施加电位; 并且通过所选择的一个层形成的第二通孔使得能够从所选择的膜片部分中传输测量值。