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21.发明授权Tunable external cavity semiconductor laser incorporating a tunable bragg grating 有权结合可调谐布拉格光栅的可调谐外腔半导体激光器公开(公告)号：US06470036B1
公开(公告)日：2002-10-22
申请号：US09705326
申请日：2000-11-03
申请人： Timothy J. Bailey , Robert N. Brucato , Michael A. Davis , Alan D. Kersey , Martin A. Putnam , Paul E. Sanders , James S. Sirkis
发明人： Timothy J. Bailey , Robert N. Brucato , Michael A. Davis , Alan D. Kersey , Martin A. Putnam , Paul E. Sanders , James S. Sirkis
IPC分类号： H01S310
CPC分类号： H01S5/141 , H01S3/1053 , H01S3/1055 , H01S5/02248
摘要： A tunable external cavity semiconductor laser incorporating a tunable Bragg grating, including: a semiconductor gain medium; an elongated tuner housing having a tuner housing head and having a tuner housing foot, the tuner housing head and tuner housing foot being rigidly connected; a span of waveguide having a Bragg grating, for receiving the source light and for providing in turn the reflected light, and having a waveguide head and a waveguide foot, the waveguide head abutting the tuner housing head and the waveguide foot disposed toward the tuner housing foot; a piezoelectric crystal or other device or arrangement for providing a compressive force, disposed so as to abut the waveguide foot and also to abut the tuner housing foot, the means for applying a compressive force for exerting a compressive force on the span of waveguide along the direction of the axis of the span of waveguide, the compressive force being sufficient to alter the grating so as to affect the wavelength of light reflected by the grating. In some applications, the waveguide includes sections of different thicknesses, each having a sampled grating, the two sampled gratings being created so that at any given compressive force exerted by the piezoelectric crystal, the two gratings reflect at most one wavelength in common. The tunable laser in such an application therefore behaves as a stepped tunable laser.
摘要翻译： 一种包含可调谐布拉格光栅的可调谐外腔半导体激光器，包括：半导体增益介质; 具有调谐器壳体头部并且具有调谐器壳体脚的细长调谐器壳体，调谐器壳体头部和调谐器壳体脚刚性连接; 具有布拉格光栅的波导的跨距，用于接收源光并反过来提供反射光，并具有波导头和波导脚，波导头邻近调谐器壳体头部和朝向调谐器壳体设置的波导脚 脚丫子; 用于提供压缩力的压电晶体或其它装置或装置，其设置成邻接波导脚并且还抵靠调谐器壳体脚，用于施加压缩力以在波导跨度上施加压缩力的装置沿着 波导跨距的方向，压缩力足以改变光栅，以便影响由光栅反射的光的波长。 在一些应用中，波导包括不同厚度的部分，每个具有采样的光栅，两个采样的光栅被创建，使得在由压电晶体施加的任何给定的压缩力下，两个光栅共同反射至多一个波长。 因此，在这种应用中的可调谐激光器作为阶梯式可调谐激光器。
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公开(公告)号：US07386204B1
公开(公告)日：2008-06-10
申请号：US09648525
申请日：2000-08-26
IPC分类号： G02B6/34
CPC分类号： G02B6/4215 , G02B6/022 , G02B6/2932 , G02B6/29322 , G02B6/29395 , H04J14/02
摘要： An optical filter, including a pair of Bragg grating units optically coupled to respective ports of a circulator, is provided for filtering a selected wavelength band of light from a DWDM input light. Each grating unit includes a respective tunable optical element, which have a reflective element, such as a Bragg grating. Generally, one grating unit filters a selected wavelength band of light and reflects the selected wavelength band to the other grating unit, which reflects a portion of the reflected wavelength band to an output of the optical filter. This double reflection of the selected wavelength band provides an optical filter having an effective filter function that is equal to the product of the individual filter functions of the grating units. To create a desired effective filter function, the gratings may be written to have different filter functions or grating profiles. One or both of the grating units may also be tunable to selectively create, tailor, shape or change the effective filter function of the optical filter in response to a control signal by offsetting the reflection wavelengths of the gratings, having different grating profiles.
摘要翻译： 提供了一种光学滤波器，其包括光耦合到环行器的相应端口的一对布拉格光栅单元，用于对来自DWDM输入光的所选择的波长带进行滤波。 每个光栅单元包括各自的可调光学元件，其具有诸如布拉格光栅的反射元件。 通常，一个光栅单元对所选择的波长带进行滤光并将所选择的波长带反射到将反射波长带的一部分反射到滤光器的输出的另一光栅单元。 所选波长带的这种双重反射提供了具有等于光栅单元的各个滤波器功能的乘积的有效滤波器功能的滤光器。 为了创建期望的有效滤波器功能，可以将光栅写入以具有不同的滤波器功能或光栅轮廓。 光栅单元中的一个或两个也可以是可调谐的，以通过偏移具有不同光栅轮廓的光栅的反射波长来响应于控制信号选择性地创建，调整，形状或改变滤光器的有效滤光器功能。
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23.发明申请FLOW AND PIPE MANAGEMENT USING VELOCITY PROFILE MEASUREMENT AND/OR PIPE WALL THICKNESS AND WEAR MONITORING 有权流量和管道管理使用速度曲线测量和/或管壁厚度和磨损监测公开(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。
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24.发明授权Apparatus having a multi-band sensor assembly for measuring a parameter of a fluid flow flowing within a pipe 有权具有用于测量在管内流动的流体流的参数的多波段传感器组件的装置公开(公告)号：US07146864B2
公开(公告)日：2006-12-12
申请号：US10795111
申请日：2004-03-04
IPC分类号： G01F1/34
CPC分类号： G01F1/74 , G01F1/662 , G01F1/666 , G01F1/7082
摘要： An apparatus 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.
摘要翻译： 一种装置测量在流体流中传播的声音和/或涡流干扰的速度以确定通过管道传播的流的参数。 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薄膜材料条。 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。
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公开(公告)号：US20110203387A1
公开(公告)日：2011-08-25
申请号：US12986366
申请日：2011-01-07
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.
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26.发明授权Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensors 有权用于使用可配置的传感器阵列测量在管内流动的流体的参数的方法和装置公开(公告)号：US07253742B2
公开(公告)日：2007-08-07
申请号：US10909592
申请日：2004-08-02
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。
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27.发明授权Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensors 有权用于使用可配置的传感器阵列测量在管内流动的流体的参数的方法和装置公开(公告)号：US07882750B2
公开(公告)日：2011-02-08
申请号：US11890322
申请日：2007-08-06
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.
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缠绕在管的至少一部分上的单片压电膜材料和设置在膜材料上的不同位置的传感器阵列。 每个传感器提供在管道的相应轴向和/或周向位置处指示管内的压力的信号。 传感器可选择性地配置以提供压力信号。 处理信号以确定参数。 传感器阵列可根据不同的标准进行配置。 标准包括要输出的流体的参数，要选择的传感器的输入信号，基于要确定的参数的预定配置以及响应于先前确定的流体参数的至少一个。
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28.发明授权Flow and pipe management using velocity profile measurement and/or pipe wall thickness and wear monitoring 有权流量和管道管理使用速度曲线测量和/或管壁厚度和磨损监测公开(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
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。
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29.发明授权Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensors 有权用于使用可配置的传感器阵列测量在管内流动的流体的参数的方法和装置公开(公告)号：US08893558B2
公开(公告)日：2014-11-25
申请号：US12986347
申请日：2011-01-07
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.
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缠绕在管的至少一部分上的单片压电膜材料和设置在膜材料上的不同位置的传感器阵列。 每个传感器提供在管道的相应轴向和/或周向位置处指示管内的压力的信号。 传感器可选择性地配置以提供压力信号。 处理信号以确定参数。 传感器阵列可根据不同的标准进行配置。 标准包括要输出的流体的参数，要选择的传感器的输入信号，基于要确定的参数的预定配置以及响应于先前确定的流体参数的至少一个。
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30.发明授权Method and apparatus for measuring parameters of a fluid flowing within a pipe using a configurable array of sensors 有权用于使用可配置的传感器阵列测量在管内流动的流体的参数的方法和装置公开(公告)号：US08336393B2
公开(公告)日：2012-12-25
申请号：US12986366
申请日：2011-01-07
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.
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缠绕在管的至少一部分上的单片压电膜材料和设置在膜材料上的不同位置的传感器阵列。 每个传感器提供在管道的相应轴向和/或周向位置处指示管内的压力的信号。 传感器可选择性地配置以提供压力信号。 处理信号以确定参数。 传感器阵列可根据不同的标准进行配置。 标准包括要输出的流体的参数，要选择的传感器的输入信号，基于要确定的参数的预定配置以及响应于先前确定的流体参数的至少一个。
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