公开(公告)号：US06490931B1

公开(公告)日：2002-12-10

申请号：US09399403

申请日：1999-09-20

申请人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  James R. Dunphy ,  Christopher J. Wright ,  Martin A. Putnam ,  Robert J. Maron ,  Richard T. Jones ,  Guy A. Daigle ,  John J. Grunbeck ,  Alan D. Kersey

发明人： Mark R. Fernald ,  Timothy J. Bailey ,  Matthew B. Miller ,  James M. Sullivan ,  James R. Dunphy ,  Christopher J. Wright ,  Martin A. Putnam ,  Robert J. Maron ,  Richard T. Jones ,  Guy A. Daigle ,  John J. Grunbeck ,  Alan D. Kersey

IPC分类号： G01L900

CPC分类号： G01L1/242 ,  G01L11/025

摘要： A fused tension-based fiber grating pressure sensor includes an optical fiber having a Bragg grating impressed therein. The fiber is fused to tubes on opposite sides of the grating and an outer tube is fused to the tubes to form a chamber. The tubes and fiber may be made of glass. Light is incident on the grating and light is reflected from the grating at a reflection wavelength &lgr;1. The grating is initially placed in tension as the pressure P increases, the tension on the grating reduced and the reflection wavelength shifts accordingly. A temperature grating may be used to measure temperature and allow for a temperature-corrected pressure measurement.

摘要翻译： 基于熔融张力的光纤光栅压力传感器包括其中印有布拉格光栅的光纤。 纤维被熔合到光栅的相对侧上的管，并且外管与管融合以形成室。 管和纤维可以由玻璃制成。 光入射到光栅上，光以反射波长lambd1从光栅反射。 当压力P增加时，光栅最初处于张力状态，光栅上的张力减小，反射波长相应地移动。 温度光栅可用于测量温度并允许进行温度校正的压力测量。

公开(公告)号：US06317555B1

公开(公告)日：2001-11-13

申请号：US09073701

申请日：1998-05-06

申请人： Robert J. Maron ,  Guy A. Daigle ,  James R. Dunphy ,  Thomas W. Engel ,  John J. Grunbeck ,  Mark R. Fernald ,  Charles W. Helm

发明人： Robert J. Maron ,  Guy A. Daigle ,  James R. Dunphy ,  Thomas W. Engel ,  John J. Grunbeck ,  Mark R. Fernald ,  Charles W. Helm

IPC分类号： G02B602

CPC分类号： G02B6/3861 ,  G01L9/0039 ,  G01L9/0077 ,  G01L11/025 ,  G02B6/02052 ,  G02B6/2552 ,  G02B6/3644 ,  G02B6/3854

摘要： A creep-resistant optical fiber attachment includes an optical fiber 10, having a cladding 12 and a core 14, having a variation region 16 (expanded or recessed) of an outer dimension on of the cladding and a structure, such as a ferrule 30, disposed against least a portion of the variation region 16. The fiber 10 is held in tension against the ferrule and the ferrule 30 has a size and shape that mechanically locks the ferrule 30 to the variation 16, thereby holding the fiber 10 in tension against the ferrule 30 with minimal relative movement (or creep) in at least one axail direction between the fiber 10 and the ferrule 30. The ferrule 30 may be attached to or part of a larger structure, such as a housing. The variation 16 and the ferrule 30 may have various different shapes and sizes. There may also be a buffer layer 18 between the cladding 12 and the ferrule 30 to protect the fiber 10 and/or to help secure the ferrule 30 to the fiber 10 to minimize creep.

摘要翻译： 抗蠕变光纤附件包括具有包层12和芯14的光纤10，该包层12具有包层外部尺寸的变化区域16（扩展或凹陷）和诸如套圈30的结构， 设置在可变区域16的至少一部分上。纤维10被保持紧固在套圈上，并且套圈30具有将套圈30机械地锁定到变型16上的尺寸和形状，从而将纤维10保持紧固 套管30在纤维10和套管30之间的至少一个轴向方向上具有最小的相对运动（或蠕变）。套圈30可以附接到诸如壳体的较大结构的一部分。 变型16和套圈30可以具有各种不同的形状和尺寸。 在包层12和套管30之间还可以存在缓冲层18，以保护纤维10和/或有助于将套圈30固定到纤维10上以使蠕变最小化。

公开(公告)号：US06507693B2

公开(公告)日：2003-01-14

申请号：US09872855

申请日：2001-06-01

申请人： Robert J. Maron ,  Guy A. Daigle ,  James R. Dunphy ,  Thomas W. Engel ,  John J. Grunbeck ,  Mark R. Fernald

发明人： Robert J. Maron ,  Guy A. Daigle ,  James R. Dunphy ,  Thomas W. Engel ,  John J. Grunbeck ,  Mark R. Fernald

IPC分类号： G02B600

CPC分类号： G01L9/0039 ,  G01L9/0077 ,  G01L11/025 ,  G02B6/02052 ,  G02B6/2552 ,  G02B6/3644 ,  G02B6/3854 ,  G02B6/3861

摘要： A method and device for tuning an optical device including an optical fiber having a core, a cladding and a Bragg grating imparted in the core to partially reflect an optical signal at a reflection wavelength characteristic of the spacing of the Bragg grating. The cladding has two variation regions located on opposite sides of the Bragg grating to allow attachment mechanisms to be disposed against the optical fiber. The attachment mechanisms are mounted to a frame so as to allow the spacing of the Bragg grating to be changed by an actuator which tunes the reflection wavelength. In particular, the variation region has a diameter different from the cladding diameter, and the attachment mechanism comprises a ferrule including a front portion having a profile substantially corresponding to diameter of the variation region and a butting mechanism butting the ferrule against the optical fiber.

公开(公告)号：US06768825B2

公开(公告)日：2004-07-27

申请号：US09873978

申请日：2001-06-01

申请人： Robert J. Maron ,  Guy A. Daigle ,  James R. Dunphy ,  Thomas W. Engel ,  John J. Grunbeck ,  Mark R. Fernald

发明人： Robert J. Maron ,  Guy A. Daigle ,  James R. Dunphy ,  Thomas W. Engel ,  John J. Grunbeck ,  Mark R. Fernald

IPC分类号： G02B600

CPC分类号： G02B6/2552 ,  G01L1/246 ,  G01L9/0039 ,  G01L9/0077 ,  G01L11/025 ,  G02B6/02052 ,  G02B6/3644 ,  G02B6/3854 ,  G02B6/3861

摘要： A method and device for pressure sensing using an optical fiber having a core, a cladding and a Bragg grating imparted in the core for at least partially reflecting an optical signal at a characteristic wavelength. The cladding has two variation regions located on opposite sides of the Bragg grating to allow attachment mechanisms to be disposed against the optical fiber. The attachment mechanisms are mounted to a pressure sensitive structure so as to allow the characteristic wavelength to change according to pressure in an environment. In particular, the variation region has a diameter different from the cladding diameter, and the attachment mechanism comprises a ferrule including a front portion having a profile substantially corresponding to at least a portion of the diameter of the variation region and a butting mechanism which holds the ferrule against the optical fiber.

摘要翻译： 一种用于使用光纤的压力感测的方法和装置，所述光纤具有在芯中赋予的芯，包层和布拉格光栅，用于至少部分地反射特征波长的光信号。 包层具有位于布拉格光栅的相对侧上的两个变化区域，以允许将附着机构设置在光纤上。 附接机构安装在压敏结构上，以使特征波长根据环境中的压力而变化。 特别地，变化区域具有与包层直径不同的直径，并且附接机构包括套圈，该套圈包括具有基本上对应于变化区域的直径的至少一部分的轮廓的前部，以及保持 针对光纤的套圈。

公开(公告)号：US06278811B1

公开(公告)日：2001-08-21

申请号：US09399504

申请日：1999-09-20

申请人： Arthur D. Hay ,  Alan D. Kersey ,  Robert J. Maron ,  Phillip Edmund Pruett ,  Mark R. Fernald ,  Guy A. Daigle ,  F. Kevin Didden ,  Allen R. Davis ,  Michael A. Davis ,  Timothy J. Bailey

发明人： Arthur D. Hay ,  Alan D. Kersey ,  Robert J. Maron ,  Phillip Edmund Pruett ,  Mark R. Fernald ,  Guy A. Daigle ,  F. Kevin Didden ,  Allen R. Davis ,  Michael A. Davis ,  Timothy J. Bailey

IPC分类号： G02B600

CPC分类号： G01L11/025

摘要： A fiber optic Bragg grating pressure sensor particularly suited for measuring ambient pressure of a fluid includes a pressuring detecting device 12 such as a glass element whose elastic deformation is proportional to applied pressure. An optical fiber 28 with an integral first grating 33 is wrapped at least once around the device and has at least a portion of its length fused to the device 12 such that elastic deformation of the device 12 generates a corresponding axial strain in the fiber 28 and/or the grating 33 and thus a corresponding change of the fiber length and/or characteristic reflectance wavelength of the grating 33. A second grating 35 may be formed near the pressure detecting device 12 so as to sense ambient temperature but not be affected by deformation of the device 12 for temperature compensation. Also, the fiber 28 may have more than one grating or be doped at least between a pair of gratings 160,162, to form a fiber laser or a DFB fiber laser which lasing wavelength changes with changing pressure.

摘要翻译： 特别适用于测量流体环境压力的光纤布拉格光栅压力传感器包括加压检测装置12，例如玻璃元件，其弹性变形与施加的压力成比例。 具有集成的第一光栅33的光纤28至少缠绕在设备周围，并且其长度的至少一部分与设备12融合，使得设备12的弹性变形在纤维28中产生相应的轴向应变，并且 /或光栅33，从而光栅33的光纤长度和/或特征反射波长的相应变化。第二光栅35可以形成在压力检测装置12附近，以便感测环境温度但不受变形影响 的温度补偿装置12。 此外，光纤28可以具有多于一个光栅或者至少在一对光栅160,162之间被掺杂，以形成激光波长随着变化的压力而变化的光纤激光器或DFB光纤激光器。

公开(公告)号：US20110056298A1

公开(公告)日：2011-03-10

申请号：US12922261

申请日：2009-03-16

申请人： Christian Victor O'keefe ,  Robert J. Maron ,  Mark R. Fernald ,  Timothy J. Bailey ,  Alex M. Van der Spek ,  Michael A. Davis ,  John V. Viega

发明人： Christian Victor O'keefe ,  Robert J. Maron ,  Mark R. Fernald ,  Timothy J. Bailey ,  Alex M. Van der Spek ,  Michael A. Davis ,  John V. Viega

IPC分类号： G01N29/04

CPC分类号： G01N29/04 ,  G01B17/02 ,  G01N29/2437

摘要： The present invention provides new techniques for non-invasive and real-time measurement of the velocity profile of slurry flow in horizontal pipes, as well as the measurement and trending of pipe wear on slurry lines. In the first case, this information can be used to determine the approach and onset of solid deposition on the bottom of the pipe. Having this information in real time can enable operation at lower velocities or higher solids concentration or both while avoiding solids deposition or plugging and their associated operational costs. In the second case, the present invention uses a permanently or semi-permanently installed ring of conformable ultrasonic transducers clamped onto the outside of the pipe. These transducers are used to measure the thickness of the pipe under their respective locations.

摘要翻译： 本发明提供了用于非侵入式和实时测量水平管道中浆料流速度分布的新技术，以及浆料管线上管道磨损的测量和趋势。 在第一种情况下，该信息可用于确定管道底部固体沉积的方法和开始。 实时获得这些信息可以使运行速度更低，固体浓度更高，同时避免固体沉积或堵塞及其相关的运营成本。 在第二种情况下，本发明使用永久地或半永久地安装的适配超声波换能器的环夹在管的外部。 这些传感器用于测量管道在各自位置下的厚度。

公开(公告)号：US09404893B2

公开(公告)日：2016-08-02

申请号：US12922261

申请日：2009-03-16

申请人： Christian O'Keefe ,  Robert J. Maron ,  Mark R. Fernald ,  Timothy J. Bailey ,  Alex Van der Spek ,  Michael A. Davis ,  John V. Viega

发明人： Christian O'Keefe ,  Robert J. Maron ,  Mark R. Fernald ,  Timothy J. Bailey ,  Alex Van der Spek ,  Michael A. Davis ,  John V. Viega

IPC分类号： G01N29/24 ,  G01N29/04 ,  G01B17/02

CPC分类号： G01N29/04 ,  G01B17/02 ,  G01N29/2437

摘要： The present invention provides new techniques for non-invasive and real-time measurement of the velocity profile of slurry flow in horizontal pipes, as well as the measurement and trending of pipe wear on slurry lines. In the first case, this information can be used to determine the approach and onset of solid deposition on the bottom of the pipe. Having this information in real time can enable operation at lower velocities or higher solids concentration or both while avoiding solids deposition or plugging and their associated operational costs. In the second case, the present invention uses a permanently or semi-permanently installed ring of conformable ultrasonic transducers clamped onto the outside of the pipe. These transducers are used to measure the thickness of the pipe under their respective locations.

摘要翻译： 本发明提供了用于非侵入式和实时测量水平管道中浆料流速度分布的新技术，以及浆料管线上管道磨损的测量和趋势。 在第一种情况下，该信息可用于确定管道底部固体沉积的方法和开始。 实时获得这些信息可以使运行速度更低，固体浓度更高，同时避免固体沉积或堵塞及其相关的运营成本。 在第二种情况下，本发明使用永久地或半永久地安装的适配超声波换能器的环夹在管的外部。 这些传感器用于测量管道在各自位置下的厚度。

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：US09062682B2

公开(公告)日：2015-06-23

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 ,  Michael A. Davis ,  Mark R. Fernald ,  Timothy J. Bailey

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

IPC分类号： G06F19/00 ,  G01N29/14 ,  F04D15/00 ,  G01H1/00

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：US06175108B1

公开(公告)日：2001-01-16

申请号：US09016258

申请日：1998-01-30

申请人： Richard T. Jones ,  Robert J. Maron ,  Guy A. Daigle

发明人： Richard T. Jones ,  Robert J. Maron ,  Guy A. Daigle

IPC分类号： G01P1500

CPC分类号： G01P15/18 ,  G01P15/093

摘要： An accelerometer has a main body in combination with one or more Bragg grating sensors respectively arranged along one or more axes. The main body has a mass that responds to an acceleration, for providing a force having a component in one or more axes. The Bragg grating sensor means responds to the force, and further responds to an optical signal, for providing a Bragg grating sensor signal containing information about the acceleration respectively in one or more axes. The one or more axes may include orthogonal axes such as the X, Y and Z Euclidian axes. In one embodiment, the main body includes a proof mass and a pair of flexure disks, each having an inner ring, an outer ring, and radial splines connecting the inner ring and the outer ring. The proof mass is slidably arranged between the flexure disks. The Bragg grating means has an optical fiber and a Bragg grating sensor arranged therein. A first end of the Bragg grating sensor is fixedly coupled by a first ferrule to the proof mass. A second end of the Bragg grating sensor is fixedly coupled by a second ferrule to a housing of the accelerometer. In operation, the compression or stretching of a Bragg grating sensor causes a wavelength shift in the optical signal that contains information about the acceleration and that is sensed by a detector.

摘要翻译： 加速度计具有与沿一个或多个轴分别布置的一个或多个布拉格光栅传感器组合的主体。 主体具有响应于加速度的质量，用于提供具有一个或多个轴中的部件的力。 布拉格光栅传感器装置响应于力并进一步响应于光学信号，以分别在一个或多个轴中提供包含关于加速度的信息的布拉格光栅传感器信号。 一个或多个轴可以包括诸如X，Y和Z欧几里得轴之类的正交轴。 在一个实施例中，主体包括检测质量块和一对弯曲盘，每个挠性盘具有连接内圈和外圈的内圈，外圈和径向花键。 检测质量块可滑动地布置在弯曲盘之间。 布拉格光栅装置具有布置在其中的光纤和布拉格光栅传感器。 布拉格光栅传感器的第一端通过第一套圈固定到校验块。 布拉格光栅传感器的第二端通过第二套圈固定地耦合到加速度计的壳体。 在操作中，布拉格光栅传感器的压缩或拉伸导致包含关于加速度的信息并且由检测器感测的光信号中的波长偏移。