公开(公告)号：US20110203387A1

公开(公告)日：2011-08-25

申请号：US12986366

申请日：2011-01-07

申请人： Michael A. Davis ,  Mark R. Fernald ,  Timothy J. Bailey

发明人： Michael A. Davis ,  Mark R. Fernald ,  Timothy J. Bailey

IPC分类号： G01F1/20

CPC分类号： G01F1/7082

摘要： An apparatus for measuring at least one parameter associated with a fluid flowing within a pipe includes a single sheet of piezoelectric film material wrapped around at least a portion of the pipe and an array of sensors disposed at different locations on the film material. Each of the sensors provides a signal indicative of pressure within the pipe at a corresponding axial and/or circumferential location of the pipe. The sensors are selectively configurable to provide the pressure signals. The signals are processed to determine the parameter. The array of sensors is configurable in response to different criteria. The criteria includes at least one of the parameter of the fluid to be output, an input signal specifying sensors to be selected, a predetermined configuration based on the parameter to be determined, and in response to a previously determined parameter of the fluid.

公开(公告)号：US20110118998A1

公开(公告)日：2011-05-19

申请号：US12992927

申请日：2009-05-20

申请人： Douglas H. Loose ,  Christian Victor O'keefe ,  Robert J. Maron ,  Joseph L. Poplawski ,  Mike A. Davis ,  Mark R. Fernald ,  Timothy J. Bailey

发明人： Douglas H. Loose ,  Christian Victor O'keefe ,  Robert J. Maron ,  Joseph L. Poplawski ,  Mike A. Davis ,  Mark R. Fernald ,  Timothy J. Bailey

IPC分类号： G06F19/00

CPC分类号： F04D15/0088 ,  G01H1/00 ,  G01N29/14

摘要： The present invention provides a processor or signal processing module that features one or more modules configured to receive an input signal containing information about the unsteady pressures or acoustic emissions caused by a medium flowing through a pump, and also configured to provide of an output signal containing information about the performance of the pump. The information about the performance of the pump may include information about pump performance monitoring by a slip flow measurement, about predicting impeller wear, about pump impeller cavitation monitoring, about pump monitoring through acoustic emissions, about pump leak detection, about pump efficiency monitoring and about positive displacement pump monitoring.

摘要翻译： 本发明提供了一种处理器或信号处理模块，其特征在于一个或多个模块，其被配置为接收包含由流经泵的介质引起的不稳定压力或声发射的信息的输入信号，并且还被配置为提供包含 有关泵的性能的信息。 关于泵的性能的信息可以包括关于通过滑流测量的泵性能监测的信息，关于预测叶轮磨损，关于泵叶轮空化监测，关于通过声发射的泵监测，关于泵泄漏检测，关于泵效率监测和关于 正排量泵监测。

公开(公告)号：US07400985B2

公开(公告)日：2008-07-15

申请号：US10712818

申请日：2003-11-12

申请人： Mark R. Fernald ,  Michael A. Davis ,  Alan D. Kersey ,  Timothy J. Bailey

发明人： Mark R. Fernald ,  Michael A. Davis ,  Alan D. Kersey ,  Timothy J. Bailey

IPC分类号： G06F19/00

CPC分类号： G01F1/668 ,  G01F1/666 ,  G01F1/7082 ,  G01F1/712 ,  G01F1/74

摘要： 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 x1-xN disposed axially along the pipe 14. The pressure sensors 15-18 provide acoustic pressure signals P1(t)-PN(t) to a signal processing unit 30 which determines the speed of sound amix propagating through of the process flow 12 flowing in the pipe 14. The pressure sensors are piezoelectric film sensors that are clamped onto the outer surface of the pipe at the respective axial location.

摘要翻译： 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速和/或涡流干扰的速度，以确定参数，例如混合质量，粒度，蒸气/质量比，液体/蒸气比， 质量流量，管道中流量的焓和体积流量，通过测量声学和/或动态压力。 该装置包括放置在沿着管14轴向设置的预定轴向位置x 1 -x N 1 / N 2的非稳态压力传感器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 N（t），该信号处理单元30确定声速a _{混合物传播通过在管道14中流动的工艺流程12。 压力传感器是在相应的轴向位置处夹紧在管的外表面上的压电膜传感器。}

公开(公告)号：US07253742B2

公开(公告)日：2007-08-07

申请号：US10909592

申请日：2004-08-02

申请人： Michael A. Davis ,  Mark R. Fernald ,  Timothy J. Bailey

发明人： Michael A. Davis ,  Mark R. Fernald ,  Timothy J. Bailey

IPC分类号： G08B21/00

CPC分类号： G01F1/7082 ,  G01F1/712 ,  G01F1/74

摘要： 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 x1. . . xN 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.

摘要翻译： 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设置在不同轴向位置x 1上的压力传感器的空间阵列。 。 。 沿着管道的x N。 每个压力传感器提供在管道的相应轴向位置处指示管内不稳定压力的压力信号P（t）。 信号处理器从每个压力传感器接收压力信号，并使用来自选定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数组以满足不同的标准。 在一个实施例中，压力传感器阵列可以形成在缠绕在管的外表面的至少一部分上的单片聚偏二氟乙烯片（PVDF）上。 这种布置允许快速和经济地安装大量的压力传感器。

公开(公告)号：US07036379B2

公开(公告)日：2006-05-02

申请号：US11104180

申请日：2005-04-12

申请人： Timothy J. Bailey ,  Mark R. Fernald ,  Alan D. Kersey ,  Trevor W. MacDougall ,  Martin A. Putnam

发明人： Timothy J. Bailey ,  Mark R. Fernald ,  Alan D. Kersey ,  Trevor W. MacDougall ,  Martin A. Putnam

IPC分类号： G01L9/00 ,  G01J1/34

CPC分类号： G01L1/246 ,  G01L9/0077 ,  G01L11/025

摘要： A fluid diffusion resistant tube-encased fiber grating pressure sensor includes an optical fiber 10 having a Bragg grating 12 impressed therein which is encased within a sensing element, such as a glass capillary shell 20. A fluid blocking coating 30 is disposed on the outside surface of the capillary shell to prevent the diffusion of fluids, such as water molecules from diffusing into the shell. The fluid diffusion resistant fiber optic sensor reduces errors caused by the diffusion of water into the shell when the sensor is exposed to harsh conditions.

摘要翻译： 耐流体扩散的管封装的光纤光栅压力传感器包括一个光纤10，其中布置有布拉格光栅12，该光纤被包封在诸如玻璃毛细管壳20之类的传感元件内。 流体阻挡涂层30设置在毛细管壳的外表面上，以防止诸如水分子之类的流体扩散到壳中。 当传感器暴露在恶劣的条件下时，防止流体扩散的光纤传感器减少了由水扩散到壳体中引起的误差。

公开(公告)号：US06996316B2

公开(公告)日：2006-02-07

申请号：US10098891

申请日：2002-03-18

申请人： Timothy J. Bailey ,  Robert N. Brucato ,  Alan D. Kersey ,  Martin A. Putnam ,  Paul Sanders ,  James Sullivan

发明人： Timothy J. Bailey ,  Robert N. Brucato ,  Alan D. Kersey ,  Martin A. Putnam ,  Paul Sanders ,  James Sullivan

IPC分类号： G02B6/02 ,  G02B6/34 ,  G02B6/22 ,  H01S3/067

CPC分类号： G01L1/242 ,  G02B6/02057 ,  G02B6/274 ,  G02B6/2817 ,  G02B6/2821 ,  G02B6/2826 ,  G02B6/29334 ,  G02B6/4214 ,  H01S3/06708 ,  H01S3/0675 ,  H01S3/094003 ,  H01S3/094007 ,  H01S3/094019

摘要： A large diameter D-shaped optical waveguide device 9, includes an optional circular waveguide portion 11 and a D-shaped waveguide portion 10 having at least one core 12 surrounded by a cladding 14. A portion of the waveguide device 9 has a generally D-shaped cross-section and has transverse waveguide dimension d2 greater than about 0.3 mm. At least one Bragg grating 16 may be impressed in the waveguide 10 and/or more than one grating or pair of gratings may be used and more than one core may be used. The device 9 provides a sturdy waveguide platform for coupling light into and out of waveguides and for attachment and alignment to other waveguides, for single and multi-core applications. The core and/or cladding 12,14 may be doped with a rare-earth dopant and/or may be photosensitive. At least a portion of the core 12 may be doped between a pair of gratings 50,52 to form a fiber laser or the grating 16 or may be constructed as a tunable DFB fiber laser or an interactive fiber laser within the waveguide 10. The waveguide may resemble a short “block” or a longer “cane” type, depending on the application and dimensions used.

摘要翻译： 大直径D形光波导器件9包括可选的圆形波导部分11和D形波导部分10，其具有被包层14包围的至少一个核心12。 波导器件9的一部分具有大致D形的横截面并且横向波导尺寸d 2大于约0.3mm。 可以在波导10中施加至少一个布拉格光栅16，和/或可以使用多于一个的光栅或一对光栅，并且可以使用多于一个的芯。 器件9提供了一个坚固的波导平台，用于将光耦合到和流出波导，并用于连接和对准其他波导，用于单核和多核应用。 芯和/或包层12,14可掺杂稀土掺杂剂和/或可以是光敏的。 芯12的至少一部分可以掺杂在一对光栅50,52之间以形成光纤激光器或光栅16，或者可以被构造为波导10内的可调DFB光纤激光器或交互光纤激光器。波导 可能类似于短的“块”或更长的“手杖”类型，具体取决于所使用的应用和尺寸。

公开(公告)号：US06982996B1

公开(公告)日：2006-01-03

申请号：US09455868

申请日：1999-12-06

申请人： Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders ,  Timothy J. Bailey ,  James M. Sullivan ,  Alan D. Kersey

发明人： Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders ,  Timothy J. Bailey ,  James M. Sullivan ,  Alan D. Kersey

IPC分类号： H01S3/30 ,  G02B6/16

CPC分类号： G02B6/022 ,  G02B6/02 ,  G02B6/02042 ,  H01S3/06708 ,  H01S3/06729 ,  H01S3/06754

摘要： A large diameter optical waveguide, grating, and laser includes a waveguide 10 having at least one core 12 surrounded by a cladding 14, the core propagating light in substantially a few transverse spatial modes; and having an outer waveguide dimension d2 of said waveguide being greater than about 0.3 mm. At least one Bragg grating 16 may be impressed in the waveguide 10. The waveguide 10 may be axially compressed which causes the length L of the waveguide 10 to decrease without buckling. The waveguide 10 may be used for any application where a waveguide needs to be compression tuned, e.g., compression-tuned fiber gratings and lasers or other applications. Also, the waveguide 10 exhibits lower mode coupling from the core 12 to the cladding 14 and allows for higher optical power to be used when writing gratings 16 without damaging the waveguide 10. The shape of the waveguide 10 may have other geometries (e.g., a “dogbone” shape) and/or more than one grating or pair of gratings may be used and more than one core may be used. The core and/or cladding 12,14 may be doped with a rare-earth dopant and/or may be photosensitive. At least a portion of the core 12 may be doped between a pair of gratings 50,52 to form a fiber laser or the grating 16 or may be constructed as a tunable DFB fiber laser or an interactive fiber laser within the waveguide 10. The waveguide may resemble a short “block” or a longer “cane” type, depending on the application and dimensions used.

摘要翻译： 大直径光波导，光栅和激光器包括具有由包层14围绕的至少一个芯12的波导10，芯以基本上几个横向空间模式传播光; 并且所述波导的外波导尺寸d 2大于约0.3mm。 可以在波导10中施加至少一个布拉格光栅16.波导10可以被轴向压缩，这导致波导10的长度L在没有弯曲的情况下减小。 波导管10可用于波导需要被压缩调谐的任何应用，例如压缩调谐的光纤光栅和激光器或其它应用。 此外，波导10表现出从芯12到包层14的较低模式耦合，并且允许在写入光栅16时使用更高的光功率，而不损坏波导10.波导10的形状可具有其他几何形状（例如， “狗骨”形状）和/或可以使用多于一个的光栅或一对光栅，并且可以使用多于一个的核心。 芯和/或包层12,14可掺杂稀土掺杂剂和/或可以是光敏的。 芯12的至少一部分可以掺杂在一对光栅50,52之间以形成光纤激光器或光栅16，或者可以被构造为波导10内的可调DFB光纤激光器或交互光纤激光器。波导 可能类似于短的“块”或更长的“手杖”类型，具体取决于所使用的应用和尺寸。

公开(公告)号：US06877378B2

公开(公告)日：2005-04-12

申请号：US10427335

申请日：2003-05-01

申请人： Timothy J. Bailey ,  Mark R. Fernald ,  Alan D. Kersey ,  Trevor W. MacDougall ,  Martin A. Putnam

发明人： Timothy J. Bailey ,  Mark R. Fernald ,  Alan D. Kersey ,  Trevor W. MacDougall ,  Martin A. Putnam

IPC分类号： G01L1/24 ,  G01L9/00 ,  G01L11/02 ,  G01J1/34

CPC分类号： G01L1/246 ,  G01L9/0077 ,  G01L11/025

摘要： A fluid diffusion resistant tube-encased fiber grating pressure sensor includes an optical fiber 10 having a Bragg grating 12 impressed therein which is encased within a sensing element, such as a glass capillary shell 20. A fluid blocking coating 30 is disposed on the outside surface of the capillary shell to prevent the diffusion of fluids, such as water molecules from diffusing into the shell. The fluid diffusion resistant fiber optic sensor reduces errors caused by the diffusion of water into the shell when the sensor is exposed to harsh conditions.

摘要翻译： 耐流体扩散的管封装的光纤光栅压力传感器包括一个光纤10，其中布置有布拉格光栅12，其被封装在诸如玻璃毛细管壳20之类的感测元件内。流体阻挡涂层30设置在外表面 的毛细管壳，以防止流体的扩散，例如水分子扩散到壳体中。 当传感器暴露在恶劣的条件下时，防止流体扩散的光纤传感器减少了由水扩散到壳体中引起的误差。

公开(公告)号：US06776045B2

公开(公告)日：2004-08-17

申请号：US10007735

申请日：2001-11-08

申请人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  James R. Dunphy ,  Michael A. Davis ,  Christopher J. Wright ,  Alan D. Kersey ,  Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders

发明人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  James R. Dunphy ,  Michael A. Davis ,  Christopher J. Wright ,  Alan D. Kersey ,  Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders

IPC分类号： G01L900

CPC分类号： G01L11/025

摘要： A fiber grating pressure sensor for use in an industrial process includes an optical sensing element 20,600 which includes an optical fiber 10 having a Bragg grating 12 impressed therein which is encased within and fused to at least a portion of a glass capillary tube 20 and/or a large diameter waveguide grating 600 having a core and a wide cladding and which has an outer transverse dimension of at least 0.3 mm. Light 14 is incident on the grating 12 and light 16 is reflected from the grating 12 at a reflection wavelength &lgr;1. The sensing element 20,600 may be used by itself as a sensor or located within a housing 48,60,90,270,300. When external pressure P increases, the grating 12 is compressed and the reflection wavelength &lgr;1 changes. The shape of the sensing element 20,600 may have other geometries, e.g., a “dogbone” shape, so as to enhance the sensitivity of shift in &lgr;1 due to applied external pressure and may be fused to an outer shell 50. A temperature grating 270 may be used to measure temperature and allow for a temperature-corrected pressure measurement. The sensor may be suspended within an outer housing 112, by a fluid, spacers, or other means. The sensor may also be combined with an instrument, an opto-electronic converter and a controller in an industrial process control system.

摘要翻译： 用于工业过程的光纤光栅压力传感器包括光学传感元件20,600，光学传感元件20,600包括光纤10，该光纤10具有印刷在其中的布拉格光栅12，该布置光栅12被封装在玻璃毛细管20的至少一部分内并与其融合，和/或 具有芯和宽包层并且具有至少0.3mm的外横向尺寸的大直径波导光栅600。 光14入射到光栅12上，光16以反射波长λ1从光栅12反射。 感测元件20,600可以自身用作传感器或位于壳体48,60,270,300内。 当外部压力P增加时，光栅12被压缩，反射波长λ1变化。 感测元件20,600的形状可以具有其他几何形状，例如“狗骨”形状，以便增强由于施加的外部压力而导致的λ1偏移的灵敏度，并且可以将其熔合到外壳50.温度光栅270可以 用于测量温度并允许进行温度校正的压力测量。 传感器可以通过流体，间隔件或其他装置悬挂在外壳体112内。 传感器还可以与工业过程控制系统中的仪器，光电转换器和控制器组合。

公开(公告)号：US06668656B2

公开(公告)日：2003-12-30

申请号：US10191710

申请日：2002-07-09

申请人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  James R. Dunphy ,  Michael A. Davis ,  Christopher J. Wright ,  Alan D. Kersey ,  Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders

发明人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  James R. Dunphy ,  Michael A. Davis ,  Christopher J. Wright ,  Alan D. Kersey ,  Martin A. Putnam ,  Robert N. Brucato ,  Paul E. Sanders

IPC分类号： G01L900

CPC分类号： G01L11/025

摘要： A fiber Bragg grating based sensor is disclosed. The sensor comprises an optical waveguide having a core and a cladding. The core comprises a pressure sensor such as a fiber Bragg grating. In one embodiment, a support is affixed around the cladding which has two first portions each having a first diameter. The pressure sensor is located at a second portion of the support positioned between the two first portions which has a second smaller diameter, thus giving the sensor a “dog bone” shape. In another embodiment, the dog bone shape is imparted by positioning the pressure sensor at a portion of a waveguide having a reduced cladding diameter.

摘要翻译： 公开了一种基于光纤布拉格光栅的传感器。 传感器包括具有芯和包层的光波导。 核心包括诸如光纤布拉格光栅的压力传感器。 在一个实施例中，支撑件固定在包层周围，该包层具有两个各自具有第一直径的第一部分。 所述压力传感器位于所述支撑件的位于所述两个第一部分之间的第二部分，所述第二部分具有第二较小的直径，从而使所述传感器成为“狗骨”形状。 在另一个实施例中，通过将压力传感器定位在具有减小的包层直径的波导的部分处来施加狗骨形状。