公开(公告)号：US20050145039A1

公开(公告)日：2005-07-07

申请号：US10905419

申请日：2005-01-03

Applicant: John Tsai

Inventor： John Tsai

IPC: G01F1/00 ,  G01F1/28

CPC classification number: G01F1/28 ,  G01F1/661

Abstract: A metering module, or a system employing such, for monitoring fluid flow with a laser light source, a light detector and a processor, wherein the fluid may be a gas or liquid. A valve section and a grating section including a fiber Bragg grating (FBG) are provided. The valve section applies strain on the FBG that is representative of the flow of the fluid. An optical fiber couples a probing laser signal to the FBG and the FBG reflects a portion back as a return laser signal that the optical fiber couples to the light detector for detection and processing.

Abstract translation: 测量模块或采用这种方式的系统用于利用激光光源，光检测器和处理器监测流体流动，其中流体可以是气体或液体。 提供了一个阀部分和一个包括光纤布拉格光栅（FBG）的光栅部分。 阀门部分应用于代表流体流动的FBG上。 光纤将探测激光信号耦合到FBG，并且FBG将部分反射回作为光纤耦合到光检测器进行检测和处理的返回激光信号。

公开(公告)号：US06903812B2

公开(公告)日：2005-06-07

申请号：US10151839

申请日：2002-05-20

Applicant: Masamichi Ipponmatsu ,  Masashi Nishigaki ,  Akira Hirano ,  Tsuyoshi Nakajima ,  Yuji Ikeda ,  Minoru Suzuki ,  Tsuyoshi Tsurutani

Inventor： Masamichi Ipponmatsu ,  Masashi Nishigaki ,  Akira Hirano ,  Tsuyoshi Nakajima ,  Yuji Ikeda ,  Minoru Suzuki ,  Tsuyoshi Tsurutani

IPC: G01F1/66 ,  G01F1/704 ,  G01F1/708 ,  G01P3/36 ,  G01P5/00 ,  G01P5/20 ,  G01P5/26

CPC classification number: G01P5/001 ,  G01F1/661 ,  G01F1/704 ,  G01F1/7086 ,  G01P5/005 ,  G01P5/20 ,  G01P5/26

Abstract: The disclosed method of measuring the flow of a fluid with a porous particulate ceramic tracer and an optical instrument is characterized in that spherical particles having diameters in the range of 0.5 to 150 μm are used as the tracer. Inasmuch as the tracer particles for flow measurement are spherical, the sectional area of scattered light to be detected by an optical sensor means is constant regardless of the orientation of particles. Furthermore, spherical particles have no surface irregularities that might cause concatenation so that individual particles are not agglomerated in tracking a fluid flow, thus contributing to improved measurement accuracy.

Abstract translation: 所公开的使用多孔颗粒陶瓷示踪剂和光学仪器测量流体的方法的特征在于使用直径在0.5-150μm范围内的球形颗粒作为示踪剂。 由于用于流量测量的示踪剂颗粒是球形的，所以由光学传感器装置检测的散射光的截面面积与颗粒的取向无关。 此外，球形颗粒没有可能引起连接的表面不规则性，使得各个颗粒在跟踪流体流动时不凝聚，从而有助于提高测量精度。

公开(公告)号：US20040074313A1

公开(公告)日：2004-04-22

申请号：US10428735

申请日：2003-05-02

Inventor： Robert O. Brandt JR.

IPC: G01F001/44

CPC classification number: G01F1/46 ,  G01F1/37 ,  G01F1/44 ,  G01F1/661 ,  G01F1/667

Abstract: A method and apparatus for fluid flow straightening and measurement introduces a high beta nozzle or venturi in-line with existing conduit. A fluid velocity measuring device is positioned in the throat of the high beta nozzle and measurements of velocity at multiple points in a plane perpendicular to the direction of fluid flow are taken. The velocity data points are then averaged and produce an output signal from which fluid flow rate can be determined.

Abstract translation: 用于流体流动矫直和测量的方法和装置引入与现有管道一致的高β喷嘴或文丘里管。 流体速度测量装置定位在高β喷嘴的喉部，并且在垂直于流体流动方向的平面中的多个点处测量速度。 然后对速度数据点进行平均，并产生可以确定流体流速的输出信号。

公开(公告)号：US06545261B1

公开(公告)日：2003-04-08

申请号：US09650573

申请日：2000-08-30

Applicant: James N. Blake ,  Alexander A. Tselikov

Inventor： James N. Blake ,  Alexander A. Tselikov

IPC: G01B910

CPC classification number: G01B11/272 ,  G01F1/661

Abstract: A method and system for aligning optical fibers includes aperturing the optical beams from the optical fibers at two points along a path. Photodetectors are placed on the apertures and the positions of the tips of the optical fibers are controlled using actuators to center the optical beams within the apertures.

Abstract translation: 用于对准光纤的方法和系统包括沿着路径的两个点处来自光纤的光束。 光检测器被放置在孔上，并且使用致动器来控制光纤的尖端的位置以使光束在孔内居中。

公开(公告)号：US06510842B2

公开(公告)日：2003-01-28

申请号：US09854561

申请日：2001-05-15

Applicant: Murad M. Ismailov

Inventor： Murad M. Ismailov

IPC: G01F100

CPC classification number: F02M51/0678 ,  F02B2075/125 ,  F02D41/40 ,  F02D2041/288 ,  F02D2041/389 ,  F02D2200/0614 ,  F02M55/02 ,  F02M61/163 ,  F02M61/18 ,  F02M63/00 ,  F02M65/00 ,  F02M2200/24 ,  G01F1/661 ,  G01F1/86 ,  Y02T10/123 ,  Y02T10/44

Abstract: The flow meter is a device having a laser Doppler anemometer (LDA) which measures the instantaneous center line velocity of fluid flow in a pipe and processes the instantaneous velocity so obtained to compute the volumetric flow rate, mass rate, and other flow characteristics as instantaneous quantities and/or integrated over a time interval using an electronic processing method which provides an exact solution to the Navier-Stokes equations for any periodically oscillating flow. The flow meter is particularly adapted for measuring the flow characteristics of high pressure automotive fuel injection systems. Three embodiments of the flow meter are described, including a stationary stand for off-line bench testing flow rate in a fuel injection system, a portable flow meter for inline testing in a vehicle's fuel line, and an on-board flow meter sensor connected to an engine control module.

公开(公告)号：US20020189366A1

公开(公告)日：2002-12-19

申请号：US10151839

申请日：2002-05-20

Applicant: Osaka Gas Company Limited

Inventor： Masamichi Ipponmatsu ,  Masashi Nishigaki ,  Akira Hirano ,  Tsuyoshi Nakajima ,  Yuji Ikeda ,  Minoru Suzuki ,  Tsuyoshi Tsurutani

IPC: G01F001/708

CPC classification number: G01P5/001 ,  G01F1/661 ,  G01F1/704 ,  G01F1/7086 ,  G01P5/005 ,  G01P5/20 ,  G01P5/26

Abstract: The disclosed method of measuring the flow of a fluid with a porous particulate ceramic tracer and an optical instrument is characterized in that spherical particles having diameters in the range of 0.5 to 150 nullm are used as the tracer. Inasmuch as the tracer particles for flow measurement are spherical, the sectional area of scattered light to be detected by an optical sensor means is constant regardless of the orientation of particles. Furthermore, spherical particles have no surface irregularities that might cause concatenation so that individual particles are not agglomerated in tracking a fluid flow, thus contributing to improved measurement accuracy.

公开(公告)号：US06473705B1

公开(公告)日：2002-10-29

申请号：US09685785

申请日：2000-10-10

Applicant: Timothy Raymond Conners

Inventor： Timothy Raymond Conners

IPC: G01F2500

CPC classification number: G01F1/661 ,  G01F15/046

Abstract: A method for determining corrected gas flow values from measured physical gas flow values is provided. A laser-based sensor system is deployed in a duct through which the gas moves. The sensor system includes two or more pairs of photoemitters/photodetectors that emit and detect light beams. Spectral changes in the light beams associated with the laser sensor system caused by the properties of the gas passing through the duct are referenced to known gas physical properties, including density. That information as well as the velocity of the gas and the temperature in the duct are analyzed and manipulated in a programmed processing unit. The processing unit is programmed to calculate a corrected gas flow value from the information obtained directly and indirectly from the detected light beams. The system and the method for obtaining the corrected flow value are suitable for use in the determination of corrected airflow through a duct, including a duct of an aircraft engine.

Abstract translation: 提供了一种从测量的物理气体流量值确定校正气体流量值的方法。 基于激光的传感器系统部署在气体移动的管道中。 传感器系统包括发射和检测光束的两对或更多对光电发射器/光电探测器。 与通过管道的气体的性质引起的与激光传感器系统相关联的光束中的光谱变化参考已知的气体物理性质，包括密度。 该信息以及气体的速度和管道中的温度在编程的处理单元中被分析和操纵。 处理单元被编程为根据从检测到的光束直接和间接获得的信息来计算校正气体流量值。 用于获得校正的流量值的系统和方法适合于用于确定包括飞机发动机的管道的管道的校正气流。

公开(公告)号：US20020089659A1

公开(公告)日：2002-07-11

申请号：US09756405

申请日：2001-01-08

Inventor： Ian D. Williamson ,  Sergei A. Sharonov ,  Pierre-Jean Daniel ,  Darwin E. Kiel

IPC: G01P003/36

CPC classification number: G01N21/41 ,  G01F1/661 ,  G01P5/20 ,  G01P5/26

Abstract: An optical design for delivering or receiving light from a fluid being measured is disclosed. The optical design is capable of immersion in the fluid being measured, and is capable of operating with fluids that have a different index of refraction. The optical design includes a solid prism of optical material to which a fiber optic attaches by a suitable adhesive. In an optical delivery system, light from the fiber enters the prism and reflects off an internal mirror to a second internal reflective surface. The second internal reflective surface focuses the light to a fixed point through an exit surface of the prism. The second internal reflective surface may in the shape of an ellipse, or may comprise a diffractive surface. The exit surface has a spherical concave shape that is centered on the fixed point where the light is focused, so that light passes through the exit surface at substantially ninety degrees. In an optical collection system, light from a point enters the prism at an entry surface, that is spherically concave so that light passes through the entry surface at substantially ninety degrees. Light then reflects from a first internal reflective surface that may be a diffractive lens or an elliptically shaped lens, to thereby focus the light received from the point. Light reflecting from the first internal reflective surface is received at a second mirrored surface, where the light is reflected to the base of the prism, where the fiber optic attaches.

Abstract translation: 公开了用于从被测流体输送或接收光的光学设计。 光学设计能够浸入正在测量的流体中，并且能够与具有不同折射率的流体一起操作。 光学设计包括光学材料的固体棱镜，光纤通过合适的粘合剂附着在该棱镜上。 在光学传送系统中，来自光纤的光线进入棱镜并从内部反射镜反射到第二内部反射表面。 第二内部反射表面通过棱镜的出射表面将光聚焦到固定点。 第二内部反射表面可以是椭圆形，或者可以包括衍射表面。 出射表面具有以光聚焦的固定点为中心的球形凹形，使得光以大致九十度的速度穿过出射表面。 在光学收集系统中，来自一个点的光在入射表面进入棱镜，其是球形凹的，使得光以大致九十度的速度穿过进入表面。 光然后从可以是衍射透镜或椭圆形透镜的第一内反射表面反射，从而聚焦从点接收的光。 从第一内部反射表面反射的光被接收在第二镜像表面处，其中光被反射到棱镜的基部，在光纤的附接处。

公开(公告)号：US6071242A

公开(公告)日：2000-06-06

申请号：US107704

申请日：1998-06-30

Applicant: Gregory Sharat Lin

Inventor： Gregory Sharat Lin

IPC: A61B8/06 ,  G01F1/66 ,  G01S7/52 ,  G01S15/58 ,  G01S15/89

CPC classification number: G01S15/8979 ,  A61B8/06 ,  A61B8/13 ,  A61B8/483 ,  G01F1/661 ,  G01S15/8988 ,  G01S7/5206 ,  G01S7/52068 ,  G01S7/52071 ,  G01S15/58

Abstract: A system is disclosed for measuring volume flow through vessel. A longitudinal area of a vessel in a body is scanned using a color Doppler imaging method, such that an imaging plane is formed approximately through the center of said vessel. A number of color pixels in a scanned cross-section of the vessel in which volume flow is detected are counted and tabulated. From this number of pixels, an observed cross-sectional area of the vessel is determined. Frequency shift information for each of the counted pixels is determined and these frequency shifts are spatially averaged. The instantaneous volume flow through the vessel is then computed from the cross-sectional area and frequency shift information. The volume flow for several different samples is computed. The instantaneous volume flows from each color Doppler imaging frame are temporally averaged over one or more integral cardiac cycles to compute a temporally-averaged volume flow.

Abstract translation: 公开了一种用于测量通过容器的体积流量的系统。 使用彩色多普勒成像方法扫描身体中的血管的纵向区域，使得成像平面大致形成在所述血管的中心附近。 检测体积流量的容器的扫描横截面中的多个彩色像素被计数并列表。 从该数量的像素，确定观察到的容器的横截面面积。 确定每个计数像素的频移信息，并且这些频移在空间上被平均。 然后从横截面积和频移信息计算通过容器的瞬时体积流量。 计算几个不同样本的体积流量。 在每个彩色多普勒成像帧上的瞬时体积流量在一个或多个积分心动周期上进行时间平均，以计算时间平均体积流量。

公开(公告)号：US6023340A

公开(公告)日：2000-02-08

申请号：US74081

申请日：1998-05-07

Applicant: Xu Wu ,  Edmund J. Fordham ,  Oliver C. Mullins ,  Rogerio Tadeu Ramos

Inventor： Xu Wu ,  Edmund J. Fordham ,  Oliver C. Mullins ,  Rogerio Tadeu Ramos

IPC: G01N21/85 ,  G01N21/00

CPC classification number: G01F1/74 ,  G01F1/661 ,  G01N21/8507

Abstract: Single point optical probes for measuring three-phase characteristics of fluid flow in a hydrocarbon well and methods of processing signals generated by the probe are disclosed. A probe having a single fiber optic is coupled to a light source and apparatus for detecting reflectance and fluorescence. Light is delivered to the tip of the probe where it either is internally reflected in the probe or exits the probe and illuminates the fluid (liquid) ambient the probe tip. If the fluid at the probe tip is oil, the light exits the probe, illuminates the oil, and causes the oil to fluoresce. If the fluid is water, no fluorescence occurs. If the fluid is gas, at least some light is internally reflected in the probe. A detection system including at least one beam splitter and fluorescence and reflectance detectors is provided in conjunction with the probe. Preferably, the fluorescence detector is coupled to the fiber optic by a wavelength division multiplexer. A preferred signal processing system for detecting oil, gas, and water provides two quasi-binary indicators: gas/liquid and oil/not oil. Three of the four possible indications (gas-not oil, liquid-not oil, and liquid-oil) give reliable results indicating whether the fluid at the probe tip is gas, water, or oil. One of the four possible indications (gas-oil) can be considered an error indicator.

Abstract translation: 公开了用于测量烃井中流体流动的三相特性的单点光学探针以及由探针产生的处理信号的方法。 具有单个光纤的探针被耦合到光源和用于检测反射率和荧光的装置。 光被传送到探头的尖端，其中它被内部反射在探头中或者离开探头并照亮探针尖端的流体（液体）环境。 如果探针尖端处的液体是油，则光离开探头，照亮油，并引起油发荧光。 如果液体是水，则不会发生荧光。 如果流体是气体，则至少有一些光在探头内部被反射。 与探头一起提供了包括至少一个分束器和荧光和反射检测器的检测系统。 优选地，荧光检测器通过波分复用器耦合到光纤。 用于检测油，气和水的优选信号处理系统提供两个准二进制指示器：气/液和油/非油。 四种可能的适应症（气体不是油，液体不是油和液体油）中的三种给出了可靠的结果，指示探针尖端的流体是气体，水还是油。 四种可能的迹象（瓦斯油）中的一种可以被认为是错误指示器。