公开(公告)号：WO2005088262A2

公开(公告)日：2005-09-22

申请号：PCT/US2005/008192

申请日：2005-03-10

Applicant: CIDRA CORPORATION ,  GYSLING, Daniel, L. ,  FERNALD, Mark, R. ,  BAILEY, Timothy, J. ,  VIEGA, John

Inventor： GYSLING, Daniel, L. ,  FERNALD, Mark, R. ,  BAILEY, Timothy, J. ,  VIEGA, John

IPC: G01F1/00

CPC classification number: G01F1/34 ,  G01F1/666 ,  G01F1/704 ,  G01F1/7082 ,  G01F1/712 ,  G01F1/74

Abstract: Various methods are described for measuring parameters of a stratified flow using at least one spatial array of sensors disposed at different axial locations along the pipe. Each of the sensors provides a signal indicative of unsteady pressure created by coherent structures convecting with the flow. In one aspect, a signal processor determines, from the signals, convection velocities of coherent structures having different length scales. The signal processor then compares the convection velocities to determine a level of stratification of the flow. The level of stratification may be used as part of a calibration procedure to determine the volumetric flow rate of the flow. In another aspect, the level of stratification of the flow is determined by comparing locally measured velocities at the top and bottom of the pipe. The ratio of the velocities near the top and bottom of the pipe correlates to the level of stratification of the flow. Additional sensor arrays may provide a velocity profile for the flow. In another aspect, each of the sensors in the array includes a pair of sensor half-portions disposed on opposing lateral surfaces of the pipe, and the signal processor determines a nominal velocity of the flow within the pipe using the signals.

Abstract translation: 描述了用于使用布置在沿着管的不同轴向位置处的至少一个传感器空间阵列来测量分层流的参数的各种方法。 每个传感器提供指示由与流动对流的相干结构产生的不稳定压力的信号。 在一个方面，信号处理器根据信号确定具有不同长度尺度的相干结构的对流速度。 然后，信号处理器比较对流速度以确定流动的分层水平。 分层的水平可以用作校准过程的一部分，以确定流量的体积流量。 在另一方面，通过比较管道顶部和底部的局部测量的速度来确定流动的分层水平。 管道顶部和底部附近的速度比与流动分层的水平相关。 附加的传感器阵列可以为流提供速度分布。 在另一方面，阵列中的每个传感器包括设置在管道的相对侧表面上的一对传感器半部分，并且信号处理器使用信号确定管道内流动的标称速度。

公开(公告)号：WO2002075405A2

公开(公告)日：2002-09-26

申请号：PCT/US2002/007763

申请日：2002-03-16

Applicant: CIDRA CORPORATION

Inventor： DAVIS, Michael, A. ,  BAILEY, Timothy, J. ,  PUTNAM, Martin, A. ,  FERNALD, Mark, R.

IPC: G02B6/293

CPC classification number: G02B6/4215 ,  G02B6/02042 ,  G02B6/02057 ,  G02B6/022 ,  G02B6/266 ,  G02B6/2861 ,  G02B6/29319 ,  G02B6/2932 ,  G02B6/29322 ,  G02B6/29334 ,  G02B6/29352 ,  G02B6/29353 ,  G02B6/29383 ,  G02B6/29395 ,  G02B6/29398 ,  G02F1/0115 ,  G02F2201/307 ,  G02F2203/60

Abstract: A multi-core optical waveguide 10, such as a dual core waveguide, having a pair of cores 12,14 disposed within a cladding 13 is provided. The cores are equally spaced and parallel to the axis of the waveguide. The cores can be spaced to provide optical coupling between the cores. The outer dimension d2 of the cladding 13 is at least about 0.3 mm; and the outer dimension d1 of the cores 12,14 is such that they propagate in a single spatial mode. The multi-core waveguide may be used in many optical components, such as a bandpass filter and an optical add/drop multiplexer. For the bandpass filter, a Bragg grating having the same reflection wavelength is written into both cores at substancially the same distance from the imput end 86,87 of the cores. The cores 12,14 have the same propagation constants to permit coupling of all the energy of the WDM input signal 84 from one core to the other. The length of the waterguide 100 is substantially equal to the coupling length (L c ), provided all the energy of the through wavelengths is desired at the output end of the second core. Generally, the grating 82 is substantially centered in the waveguide at L c /2.

Abstract translation: 提供了具有设置在包层13内的一对芯12,14的双芯光波导10，例如双芯波导。 芯部等距并且平行于波导的轴线。 芯可以间隔开以提供芯之间的光耦合。 包层13的外形尺寸d2至少约为0.3mm; 并且芯12,14的外部尺寸d1使得它们以单个空间模式传播。 多芯波导可以用在许多光学部件中，例如带通滤波器和光分插复用器。 对于带通滤波器，具有相同反射波长的布拉格光栅被写入到与芯的输入端86,87成基本相同距离的两个核中。 磁芯12,14具有相同的传播常数，以允许将WDM输入信号84的所有能量从一个磁芯耦合到另一个磁芯。 如果在第二芯的输出端需要通过波长的所有能量，则导水管100的长度基本上等于耦合长度（Lc）。 通常，光栅82在Lc / 2处基本上位于波导中心。

公开(公告)号：WO2010120258A2

公开(公告)日：2010-10-21

申请号：PCT/US2006/009952

申请日：2006-03-17

Applicant: CIDRA CORPORATION ,  BAILEY, Timothy, J.

Inventor： BAILEY, Timothy, J.

CPC classification number: G01F1/666 ,  G01F1/7082 ,  G01F1/712

Abstract: An apparatus and method of processing flow meter data to filter out signal noise is provided. The method includes defining the flow meter data is a k-ω plane, wherein the k-ω plane includes a first k-plane quadrant separated from a second k-plane quadrant by a predetermined axis. The flow meter data includes a first data set disposed within the first k- plane quadrant and a second data set disposed within the second k-plane quadrant. The first data set and the second data set are disposed symmetrically about the predetermined axis and subtracting the first data set from the second data set to obtain a resultant data set.

Abstract translation: 提供了一种处理流量计数据以滤除信号噪声的装置和方法。 该方法包括定义流量计数据是一个k- 平面，其中k- 平面包括与第二k平面象限分开预定轴的第一k平面象限。 流量计数据包括设置在第一k平面象限内的第一数据集和设置在第二k面象限内的第二数据集。 第一数据组和第二数据组围绕预定轴对称地设置，并从第二数据组中减去第一数据组以获得结果数据集。

公开(公告)号：WO2002075402A1

公开(公告)日：2002-09-26

申请号：PCT/US2002/007753

申请日：2002-03-16

Applicant: CIDRA CORPORATION

Inventor： BAILEY, Timothy, J. ,  PUTNAM, Martin, A. ,  MOON, John ,  DAWSON, Jay, W. ,  PINTO, Joseph ,  SIRKIS, James, S. ,  SZCZEPANEK, Paul, S.

IPC: G02B6/28

CPC classification number: H01S3/094003 ,  G02B6/2713 ,  G02B6/2817 ,  G02B6/2821 ,  G02B6/2826 ,  G02B6/2852 ,  G02B6/4214 ,  H01S3/06708 ,  H01S3/094007 ,  H01S3/094019

Abstract: An optical coupling device is provided for coupling a pump light into an optical waveguide (10) such as an optical fiber or planar waveguide. An optical source (22) provides a pump light (25). A large diameter optical waveguide is arranged in relation to the optical source, has a diameter substantially greater than 0.3 microns, and includes a reflective surface (24) that reflects the pump light and provides a reflected pump light to the optical fiber. The reflective surface may be either a notched surface of a V-shaped indentation (12) or a cleaved end (68, 70) of the large diameter optical waveguide. Alternatively, the optical coupling device is includes a side tap lens (112) mounted to the large diameter optical waveguide (110) for directing pump light provided by the optical source. The side tap lens is arranged in relation to the optical source and includes a reflective surface 144) that reflects the pump light and provides a reflected pump light to the large diameter waveguide, which directs the pump light to the optical fiber. The reflective surface may include a coated surface to enhance reflectively.

Abstract translation: 提供了一种用于将泵浦光耦合到诸如光纤或平面波导的光波导（10）中的光耦合装置。 光源（22）提供泵浦光（25）。 大直径光波导相对于光源布置，具有基本上大于0.3微米的直径，并且包括反射表面（24），反射表面（24）反射泵浦光并向光纤提供反射的泵浦光。 反射表面可以是大直径光波导的V形凹口（12）或切割端（68,70）的缺口表面。 或者，光耦合装置包括安装到大直径光波导（110）的侧抽头透镜（112），用于引导由光源提供的泵浦光。 侧抽头透镜相对于光源布置，并且包括反射表面144），反射表面144）反射泵浦光并且向大直径波导提供反射的泵浦光，其将泵浦光引导到光纤。 反射表面可以包括涂覆表面以增强反射。

公开(公告)号：WO2007016330A1

公开(公告)日：2007-02-08

申请号：PCT/US2006/029368

申请日：2006-07-28

Applicant: CIDRA CORPORATION ,  BAILEY, Timothy, J. ,  FERNALD, Mark

Inventor： BAILEY, Timothy, J. ,  FERNALD, Mark

IPC: G01F1/66 ,  G01F1/704 ,  G01F1/708 ,  G01F1/712 ,  G01F1/74

CPC classification number: G01F1/7082 ,  G01F1/666 ,  G01F1/667 ,  G01F1/704 ,  G01F1/712 ,  G01F1/74

Abstract: A method and apparatus for determining at least one characteristic of a fluid flowing within a pipe is provided and includes at least one sensing device. The at least one sensing device includes a first sensor segment having a first segment polarity and being associated with a first outer portion of the pipe and a second sensor segment having a second segment polarity and being associated with a second outer portion of the pipe, wherein the first sensor segment and the second sensor segment generate sensor data responsive to the fluid flowing within the pipe. The apparatus further includes a processing device communicated with the at least one sensing device, wherein the processing device receives the sensor data and processes the sensor data to determine the at least one characteristic of the fluid.

Abstract translation: 提供了一种用于确定在管内流动的流体的至少一种特性的方法和装置，并且包括至少一个感测装置。 所述至少一个感测装置包括具有第一段极性并与管的第一外部部分相关联的第一传感器段和具有第二段极性并与管的第二外部部分相关联的第二传感器段，其中 第一传感器段和第二传感器段响应于在管内流动的流体产生传感器数据。 所述装置还包括与所述至少一个感测装置通信的处理装置，其中所述处理装置接收所述传感器数据并处理所述传感器数据以确定所述流体的所述至少一个特性。

公开(公告)号：WO2004079306A1

公开(公告)日：2004-09-16

申请号：PCT/US2004/006800

申请日：2004-03-04

Applicant: CIDRA CORPORATION

Inventor： SULLIVAN, James ,  BAILEY, Timothy, J. ,  DAVIS, Michael, A. ,  FERNALD, Mark, R. ,  NIEZGORSKI, Richard

IPC: G01F1/66

CPC classification number: G01F1/74 ,  G01F1/662 ,  G01F1/666 ,  G01F1/7082

Abstract: An apparatus is provided that measures the speed of sound and/or vortical disturbances propagating in a fluid flow to determine a parameter of the flow propagating through a pipe. The apparatus includes a sensing device that includes an array of pressure sensors used to measure the acoustic and convective pressure variations in the flow to determine a desired parameter. The sensing device includes a unitary strap having a plurality of bands disposed parallel to each other. The bands are interconnected by cross members to maintain the bands a predetermined distance apart. . Each of the bands having a strip of piezoelectric film material mounted along a substantial length of the bands. The piezoelectric film material provides a signal indicative of the unsteady pressures within the pipe. The sensing device includes a conductive shield around the multi-band strap and the piezoelectric film material to provide a grounding shield. A cover is disposed around the entire assembly to protect it from environmental influences. The unitary multi-band strap permits the sensors to be accurate spaced apart during manufacturing and ensures fast and simple installation of the meter on the pipe.

Abstract translation: 提供了一种测量在流体流中传播的声速和/或涡流干扰的速度以确定通过管道传播的流的参数的装置。 该装置包括感测装置，其包括用于测量流中的声学和对流压力变化的压力传感器阵列，以确定期望的参数。 感测装置包括具有彼此平行布置的多个带的整体带。 带通过横向构件相互连接，以将带保持预定距离。 。 每个带具有沿带的相当长度安装的压电膜材料条。 压电膜材料提供指示管内不稳定压力的信号。 感测装置包括围绕多带带的导电屏蔽和压电膜材料以提供接地屏蔽。 围绕整个组件布置一个盖子，以防止其受到环境影响。 整体式多带带可以在制造过程中使传感器间隔精确，并确保仪表快速简便地安装在管道上。

公开(公告)号：WO2003104866A1

公开(公告)日：2003-12-18

申请号：PCT/US2003/018173

申请日：2003-06-09

Applicant: CIDRA CORPORATION

Inventor： KERSEY, Alan, D. ,  FERNALD, Mark, R. ,  BAILEY, Timothy, J. ,  DAVIS, Michael, A. ,  ENGEL, Thomas, W. ,  BRUCATO, Robert, N. ,  JONES, Richard, T. ,  MACDOUGALL, Trevor, W. ,  MILLER, Matthew, B. ,  SANDERS, Paul, E. ,  SIRKIS, James, S. ,  SULLIVAN, James, M. ,  PUTNAM, Martin, A.

IPC: G02B6/16

CPC classification number: G02B6/024 ,  B29D11/00721 ,  C03B37/01211 ,  C03B37/0122 ,  C03B37/01222 ,  C03B2203/14 ,  C03B2203/16 ,  C03B2203/34 ,  G01D5/35303 ,  G01D5/35383 ,  G01L1/246 ,  G01L11/025 ,  G02B6/02042 ,  G02B6/021 ,  G02B6/0218 ,  G02B6/022 ,  G02B6/02385 ,  G02B6/0239

Abstract: A tunable optical filter has a large diameter cane waveguide (10) with "side-holes" (18) in the cane cross-section that reduce the force required to compress the large diameter optical waveguide without overly compromising the buckling strength thereof. The large diameter optical waveguide (10) has a cross-section of at least about 0.3 millimeters, including at least one inner core, a Bragg (14) grating arranged therein, a cladding surrounding the inner core, and a structural configuration for providing a reduced bulk modulus of compressibility and maintaining the anti-buckling strength of the large diameter optical waveguide. The structural configuration reduces the cross-sectional area of the large diameter optical waveguide. These side holes reduce the amount of glass that needs to be compressed, but retains the large diameter.

Abstract translation: 可调谐滤光器具有在拐杖横截面中具有“侧孔”（18）的大直径拐杖波导（10），其减小了压缩大直径光波导所需的力而不会过度损害其屈曲强度。 大直径光波导（10）具有至少约0.3毫米的横截面，包括至少一个内芯，布置在其中的布拉格（14）光栅，围绕内芯的包层，以及用于提供 可缩小体积弹性模量并保持大直径光波导的抗弯曲强度。 结构构造减小了大直径光波导的横截面积。 这些侧孔减少了需要压缩的玻璃量，但是保留了大直径。

公开(公告)号：WO2002027744A3

公开(公告)日：2002-04-04

申请号：PCT/US2001/030205

申请日：2001-09-27

Applicant: CIDRA CORPORATION

Inventor： PUTNAM, Martin, A. ,  KERSEY, Alan, D. ,  BAILEY, Timothy, J.

IPC: G02B6/34

Abstract: An optical filter (100), including a Bragg grating (102), is compression tuned such that when under one compressional load (or no load) the grating (102) has a first profile and under a second compressional load the grating (102) has a second profile. One application is to allow the grating filter function to be parked optically between channels of a WDM or DWDM optical system.

公开(公告)号：WO2005012843A2

公开(公告)日：2005-02-10

申请号：PCT/US2004/024779

申请日：2004-08-02

Applicant: CIDRA CORPORATION

Inventor： DAVIS, Michael, A. ,  FERNALD, Mark, R. ,  BAILEY, Timothy, J.

IPC: G01F1/66

CPC classification number: G01F1/7082 ,  G01F1/712 ,  G01F1/74

Abstract: An apparatus for measuring at least one parameter associated with a fluid flowing within a pipe includes a spatial array of pressure sensors disposed at different axial locations x 1 ... x N along the pipe. Each of the pressure sensors provides a pressure signal P(t) indicative of unsteady pressure within the pipe at a corresponding axial location of the pipe. A signal processor receives the pressure signals from each of the pressure sensors and determines the parameter of the fluid using pressure signals from selected ones of the pressure sensors. By selecting different pressure sensors, the signal processor can configure the array to meet different criteria. In one embodiment, the array of pressure sensors may be formed on a single sheet of polyvinylidene fluoride (PVDF) that is wrapped around at least a portion of an outer surface of the pipe. This arrangement allows a large number of pressure sensors to be quickly and economically installed.

Abstract translation: 用于测量与在管道内流动的流体相关联的至少一个参数的装置包括布置在不同轴向位置x 1 ... x < sub> N 沿着管道。 每个压力传感器提供指示管道的相应轴向位置处的管道内的不稳定压力的压力信号P（t）。 信号处理器接收来自每个压力传感器的压力信号，并使用来自选定的压力传感器的压力信号确定流体的参数。 通过选择不同的压力传感器，信号处理器可以配置阵列以满足不同的标准。 在一个实施例中，压力传感器阵列可以形成在围绕管的至少一部分外表面缠绕的聚偏二氟乙烯（PVDF）的单片上。 这种布置可以使大量压力传感器快速而经济地安装。

公开(公告)号：WO2004044532A2

公开(公告)日：2004-05-27

申请号：PCT/US2003/036436

申请日：2003-11-12

Applicant: CIDRA CORPORATION

Inventor： FERNALD, Mark, R. ,  DAVIS, Michael, A. ,  KERSEY, Alan, D. ,  GYSLING, Daniel, L. ,  BAILEY, Timothy, J.

IPC: G01F1/74

CPC classification number: G01F1/668 ,  G01F1/666 ,  G01F1/7082 ,  G01F1/712 ,  G01F1/74

Abstract: A apparatus (10, 110, 170) is provided that measures the speed of sound and/or vortical disturbances propagating in a single phase fluid flow and/or multiphase mixture to determine parameters, such as mixture quality, particle size, vapor/mass ratio, liquid/vapor ratio, mass flow rate, enthalpy and volumetric flow rate of the flow in a pipe, by measuring acoustic and/or dynamic pressures. The apparatus includes a spatial array of unsteady pressure sensors (15-18) placed at predetermined axial locations x 1 - x N disposed axially along the pipe (14). The pressure sensors (15-18) provide acoustic pressure signals P 1 (t) - P N (t) to a signal processing unit (30) which determines the speed of sound a mix propagating through of the process flow (12) flowing in the pipe (14). The pressure sensors are piezoelectric film sensors that are mounted or clamped onto the outer surface of the pipe at the respective axial location.

Abstract translation: 提供了一种装置（10,110,170），其测量在单相流体流和/或多相混合物中传播的声音和/或旋涡扰动的速度，以确定参数，例如混合物质量 ，通过测量声学和/或动态压力来测量管道中的流量，粒度，蒸汽/质量比，液体/蒸气比率，质量流量，焓和体积流量。 该设备包括放置在沿管道（14）轴向布置的预定轴向位置x 1 -x N处的不稳定压力传感器（15-18）的空间阵列。 压力传感器（15-18）向信号处理单元（30）提供声压信号P 1（t）-P N（t），信号处理单元（30）确定 发出通过在管道（14）中流动的过程流（12）传播的混合信号。 压力传感器是压电薄膜传感器，它们在相应的轴向位置处安装或夹紧在管道的外表面上。