利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

68 条记录 (耗时 0.046 秒)

    Apparatus having an array of piezoelectric film sensors for measuring parameters of a process flow within a pipe
    1.
    发明授权
    Apparatus having an array of piezoelectric film sensors for measuring parameters of a process flow within a pipe 有权
    具有用于测量管道内的工艺流程的参数的压电膜传感器阵列的装置

    公开(公告)号：US07474966B2

    公开(公告)日：2009-01-06

    申请号：US11521627

    申请日：2006-09-14

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

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

    IPC分类号： G06F19/00

    CPC分类号： 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 mounted or 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管14轴向设置的预定轴向位置x1-xN处的不稳定压力传感器15-18的空间阵列。压力传感器15-18向信号提供声压信号P1（t）-PN（t） 处理单元30，其确定在管14中流动的工艺流程12传播的声音amix的速度。压力传感器是压电膜传感器，其在相应的轴向位置处安装或夹紧在管的外表面上。

    Tube-encased fiber grating
    3.
    发明授权
    Tube-encased fiber grating 有权
    管状光纤光栅

    公开(公告)号：US06519388B1

    公开(公告)日：2003-02-11

    申请号：US09455865

    申请日：1999-12-06

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

    IPC分类号： G02B634

    CPC分类号： G02B6/022 ,  G02B6/0218

    摘要： A tube-encased fiber grating includes an optical fiber 10 having at least one Bragg grating 12 impressed therein which is embedded within a glass capillary tube 20. Light 14 is incident on the grating 12 and light 16 is reflected at a reflection wavelength &lgr;1. The shape of the tube 20 may be other geometries (e.g., a “dogbone” shape) and/or more than one concentric tube may be used or more than one grating or pair of gratings may be used. The fiber 10 may be doped at least between a pair of gratings 150,152, encased in the tube 20 to form a tube-encased compression-tuned fiber laser or the grating 12 or gratings 150,152 may be constructed as a tunable DFB fiber laser encased in the tube 20. Also, the tube 20 may have an inner region 22 which is tapered away from the fiber 10 to provide strain relief for the fiber 10, or the tube 20 may have tapered (or fluted) sections 27 which have an outer geometry that decreases down to the fiber 10 and provides added fiber pull strength. Also, the tube-encased grating 12 exhibits lower mode coupling from the fiber core to the cladding modes due to the increased diameter of the cladding where the tube 20 is fused to the fiber 10 where the grating is located 12.

    摘要翻译： 管状光纤光栅包括光纤10，其具有嵌入其中的至少一个布拉格光栅12，该布拉格光栅12嵌入玻璃毛细管20内。光14入射到光栅12上，光16以反射波长lambd1反射。 管20的形状可以是其他几何形状（例如，“狗骨”形状）和/或可以使用多于一个的同心管，或者可以使用多于一个的光栅或一对光栅。 纤维10可以至少掺杂在一对光栅150,152之间，封装在管20中以形成管封装的压缩调谐光纤激光器，或者光栅12或光栅150,152可被构造为包含在该光纤12中的可调DFB光纤激光器。 管20也可以具有内部区域22，该内部区域22远离纤维10逐渐变细，以为纤维10提供应变消除，或者管20可以具有锥形（或凹槽）部分27，其具有外部几何形状 降低到纤维10并提供增加的纤维拉伸强度。 此外，由于包层的直径增加，管20被熔合到光栅位于12处的光纤10，管状光栅12表现出从纤维芯到包层模式的较低模式耦合。

    Compression-tuned Bragg grating and laser
    4.
    发明授权
    Compression-tuned Bragg grating and laser 有权
    压缩调谐布拉格光栅和激光

    公开(公告)号：US06363089B1

    公开(公告)日：2002-03-26

    申请号：US09691997

    申请日：2000-10-19

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

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

    IPC分类号： H01S310

    CPC分类号： G02F1/0115 ,  G02B6/0218 ,  G02B6/022 ,  G02F1/0128 ,  G02F2201/307

    摘要： A compression-tuned bragg grating includes a tunable optical element 20,600 which includes either an optical fiber 10 having at least one Bragg grating 12 impressed therein encased within and fused to at least a portion of a glass capillary tube 20or a large diameter waveguide grating 600 having a core and a wide cladding. Light 14 is incident on the grating 12 and light 16 is reflected at a reflection wavelength &lgr;1. The tunable element 20,600 is axially compressed which causes a shift in the reflection wavelength of the grating 12 without buckling the element. The shape of the element may be other geometries (e.g., a “dogbone” shape) and/or more than one grating or pair of gratings may be used and more than one fiber 10 or core 612 may be used. At least a portion of the element may be doped between a pair of gratings 150,152, to form a compression-tuned laser or the grating 12 or gratings 150,152 may be constructed as a tunable DFB laser. Also, the element 20 may have an inner tapered region 22 or tapered (or fluted) sections 27. The compression may be done by a PZT, stepper motor or other actuator or fluid pressure.

    摘要翻译： 压缩调谐布拉格光栅包括可调谐光学元件20,600，其包括光纤10，其具有印刷在其中的至少一个布拉格光栅12，该光纤10被封装在玻璃毛细管20或大直径波导光栅600的至少一部分中并且熔合到其中， 一个核心和宽广的包层。 光14入射到光栅12上，光16以反射波长lambd1反射。 可调谐元件20,600被轴向压缩，这导致光栅12的反射波长的偏移而不使元件弯曲。 元件的形状可以是其他几何形状（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光纤10或核612。 元件的至少一部分可以掺杂在一对光栅150,152之间，以形成压缩调谐的激光器，或者光栅12或光栅150,152可被构造为可调DFB激光器。 此外，元件20可以具有内锥形区域22或锥形（或凹槽）部分27.压缩可以由PZT，步进电动机或其他致动器或流体压力来实现。

    Strain-isolated Bragg grating temperature sensor
    6.
    发明授权
    Strain-isolated Bragg grating temperature sensor 有权
    应变隔离布拉格光栅温度传感器

    公开(公告)号：US06865194B1

    公开(公告)日：2005-03-08

    申请号：US09455866

    申请日：1999-12-06

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

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

    IPC分类号： G01K11/32 ,  H01S3/30 ,  G01N21/00

    CPC分类号： G01K11/32

    摘要： A strain-isolated bragg grating temperature sensor includes an optical sensing element 20,600 which includes an optical fiber 10 having at least one Bragg grating 12 disposed 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 having the grating 12 disposed therein, which senses temperature changes but is substantially not sensitive to strains on the element caused by the fiber or other effects. Light 14 is incident on the grating 12 and light 16 is reflected at a reflection wavelength λ1. The shape of the sensing element 20,600 may be other geometries and/or more than one concentric tube may be used or more than one grating or pair of gratings may be used or more than one fiber or optical core may be used. At least a portion of the element 20,600 may be doped between a pair of gratings 150,152, disposed therein to form a temperature tunable laser or the grating 12 or gratings 150,152 may be constructed as a temperature tunable DFB laser disposed in the element. Also, the element may have an inner or outer tapered regions 22,27, respectively, to provide strain relief and/or added pull strength for the fiber 10. Further, the fiber 10 and the tube 20 may be made of different coefficients of thermal expansion for increased sensitivity.

    摘要翻译： 应变隔离布拉格光栅温度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具有布置在其中的至少一个布拉格光栅12，该布拉格光栅12被封装在玻璃毛细管20的至少一部分内并且熔合到玻璃毛细管20和/ 大直径波导光栅600具有芯和宽包层并且其中布置有光栅12，其感测温度变化，但对由纤维或其它效应引起的元件上的应变基本上不敏感。 光14入射在光栅12上，光16以反射波长λ1反射。 感测元件20,600的形状可以是其他几何形状，和/或可以使用多于一个的同心管，或者可以使用多于一个的光栅或一对光栅，或者可以使用多于一个的光纤或光纤。 元件20,600的至少一部分可以被掺杂在放置在其中的一对光栅150,152之间以形成温度可调激光器，或者光栅12或光栅150,152可以被构造为设置在元件中的温度可调谐DFB激光器。 此外，元件可以分别具有内部或外部锥形区域22,27，以为纤维10提供应变消除和/或增加的拉伸强度。此外，纤维10和管子20可以由不同的热系数 扩大灵敏度提高。

    Bragg grating pressure sensor
    9.
    发明授权
    Bragg grating pressure sensor 有权
    布拉格光栅压力传感器

    公开(公告)号：US06422084B1

    公开(公告)日：2002-07-23

    申请号：US09455867

    申请日：1999-12-06

    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 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. At least a portion of the sensing element may be doped between a pair of gratings 150, 152, to form a compression-tuned laser or the grating 12 or gratings 150, 152 may be constructed as a tunable DFB laser. Also, the axial ends of element 20, 600 where the fiber 10 exits the tube 20 may have an inner tapered region 22 and/or a protruding tapered (or fluted) axial section 27 to provide strain relief or improved pull strength for the fiber 10. 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 invention may also be used as a force transducer.

    摘要翻译： 光纤光栅压力传感器包括光学感测元件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，该光纤10包围玻璃毛细管20和/或大直径波导的至少一部分 光栅600具有芯和宽包层，并且具有至少0.3mm的外横向尺寸。 光14入射到光栅12上，光16以反射波长lambd1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48,60,90,270,3300内。当外部压力P增加时，光栅12被压缩并且反射波长lambd1改变。 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羔羊皮1偏移的灵敏度，并且可以将其熔合到外壳50上。至少 感测元件的一部分可以掺杂在一对光栅150,152之间以形成压缩调谐的激光器，或者光栅12或光栅150,152可被构造为可调DFB激光器。 此外，纤维10离开管20的元件20,600的轴向端部可以具有内锥形区域22和/或突出的锥形（或槽纹）轴向部分27，以提供应变消除或改进的纤维10的拉伸强度 可以使用温度光栅270来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。 本发明也可以用作力传感器。

    Apparatus having an array of clamp on piezoelectric film sensors for measuring parameters of a process flow within a pipe
    10.
    发明授权
    Apparatus having an array of clamp on piezoelectric film sensors for measuring parameters of a process flow within a pipe 有权
    具有用于测量管道内的工艺流程的参数的压电膜传感器上的夹具阵列的装置

    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。