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公开(公告)号：US08733162B2
公开(公告)日：2014-05-27
申请号：US12737376
申请日：2009-07-27
申请人： Norman Wood , Karin Bauer , Xaver Riedl , Roland Wagner
发明人： Norman Wood , Karin Bauer , Xaver Riedl , Roland Wagner
IPC分类号： G01M9/00
摘要： The invention relates to a flow state sensor (10) for detecting a flow state at a body (16) that may be impinged on by a flow (12). A flow state sensor (10) that is of a simple construction and that is simple to evaluate is characterized in accordance with the invention by at least one frequency detecting device (20) for detecting at least one predefined frequency characteristic of the flow state. The frequency detecting device (20) has at least one oscillation element (22; 22a, 22b, 22c) excitable to resonant oscillatory movement (30) by a flow (12) and having a resonant frequency or natural frequency adapted to the predefined frequency characteristic, especially corresponding to the predefined frequency characteristic. Uses of the flow state sensor (10) in a flow measuring device (62) and in a flow measuring method, and an advantageous production method for the flow state sensor (10) are also proposed.
摘要翻译： 本发明涉及一种用于检测可能被流动（12）撞击的主体（16）处的流动状态的流量状态传感器（10）。 根据本发明，具有简单结构且简单评估的流状态传感器（10）由至少一个用于检测流动状态的至少一个预定频率特性的频率检测装置（20）来表征。 频率检测装置（20）具有至少一个振荡元件（22; 22a，22b，22c），该振荡元件（22; 22a，22b，22c）可通过流动（12）激励到谐振振荡运动（30），并具有适应预定频率特性的谐振频率或固有频率 ，特别是对应于预定义的频率特性。 还提出了流量测量装置（62）中的流量状态传感器（10）和流量测量方法的使用以及用于流动状态传感器（10）的有利的生产方法。
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公开(公告)号：US4567776A
公开(公告)日：1986-02-04
申请号：US508466
申请日：1983-06-28
申请人： Haruhiko Adachi
发明人： Haruhiko Adachi
CPC分类号： G01F1/3281 , F24F11/053 , G01F1/329 , G01P5/01 , G01P5/24
摘要： Fluid flowmeter which includes a Karman vortex generator, ultrasonic transmitter and receiver apparatus and networks for detecting the Karman vortices and for detecting and controlling information of a received wave and a reference wave of the ultrasonic transmitter. The flowmeter detects an air flow volume and/or speed by Karman vortex detecting means using ultrasonic waves.
摘要翻译： 流体流量计，其包括卡曼涡流发生器，超声波发射器和接收器装置以及用于检测卡曼涡流并用于检测和控制超声波发射器的接收波和参考波的信息的网络。 流量计通过使用超声波的卡门涡流检测装置来检测气流量和/或速度。
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公开(公告)号：US4472022A
公开(公告)日：1984-09-18
申请号：US377421
申请日：1982-05-12
CPC分类号： G01F1/3254 , G01P5/01
摘要： A vortex flowmeter including a single optical fiber into one end of which a light signal can be transmitted from a source to the other fiber end where it is vortex modulated. Modulated light at the other end is then reflected to a receiver back along the same optical fiber. Relative movement between the other fiber end and a reflector serves to modulate the light signal. Embodiments are disclosed in which the other fiber end moves and the reflector is stationary. In the alternative case, the other fiber end is stationary and the reflector moves.
摘要翻译： 涡流流量计，其包括单个光纤，其一端可以将光信号从源传输到另一光纤端，在那里进行涡旋调制。 然后另一端的调制光沿相同的光纤反射回接收机。 另一光纤端与反射器之间的相对运动用于调制光信号。 公开了其他光纤端移动并且反射器是静止的实施例。 在替代的情况下，另一个光纤端是静止的并且反射器移动。
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公开(公告)号：US4385830A
公开(公告)日：1983-05-31
申请号：US210704
申请日：1980-11-26
申请人： Watt W. Webb , Michael B. Frish
发明人： Watt W. Webb , Michael B. Frish
摘要： An optical system for direct measurement of vorticity in a flowing fluid is disclosed. Spherical particles suspended in the flow rotate with an angular velocity that is accurately equal to half the local vorticity; thus, measurements of the rotation rates of such particles indicate the vorticity. The particles are transparent, and preferably are less than 50 .mu.m diameter, and each contains embedded planar crystal mirrors. The particles are suspended in a refractive index matched liquid. Measurement of the particle rotation rate and thus the vorticity of the fluid is preferably accomplished by measuring the rotation rates of reflections of one or more light beams from the planar mirrors. The measurements may be carried out using any system of position sensitive optical detectors such as photo sensitive devices screened by suitable slits or photo diode arrays.
摘要翻译： 公开了一种用于在流动流体中直接测量涡度的光学系统。 悬浮在流体中的球形颗粒以精确等于局部涡度的一半的角速度旋转; 因此，这种颗粒的旋转速率的测量表明涡度。 颗粒是透明的，并且优选地直径小于50μm，并且每个都包含嵌入的平面晶体镜。 颗粒悬浮在折射率匹配的液体中。 颗粒旋转速率的测量以及流体的涡度优选通过测量来自平面反射镜的一个或多个光束的反射的旋转速率来实现。 可以使用任何位置敏感光学检测器系统来执行测量，例如由合适的狭缝或光电二极管阵列屏蔽的光敏设备。
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公开(公告)号：US4248085A
公开(公告)日：1981-02-03
申请号：US785
申请日：1979-01-03
申请人： John Coulthard
发明人： John Coulthard
IPC分类号： G01F1/712 , G01P3/80 , G01P5/01 , G01P5/18 , G01P5/22 , G01P5/24 , G01S13/60 , G01S15/58 , G01P5/00
摘要： An apparatus and method for measuring the velocity of a relative movement between first and second bodies or between a first body and a fluid. The first body may be stationary and the second body a moving body, such as hot strip steel. Alternatively, the first body may be an aircraft or ship whose velocity is to be measured or it may be a pipe or duct along which a fluid is flowing. At least two detectors are mounted on the first body and serve to detect noise signals representing disturbances in the fluid or on the second body. Correlating means generate data for producing at least two correlation or autocorrelation curves from the signals from the detectors. The data from the correlating means is then combined to enable production of a combined cross-correlation or auto-correlation curve, from which the relative velocity can be computed.
摘要翻译： 一种用于测量第一和第二主体之间或第一主体和流体之间的相对运动的速度的装置和方法。 第一主体可以是静止的，而第二主体可以是移动体，例如热带钢。 或者，第一机体可以是要测量其速度的飞机或船舶，或者它可以是流体流过的管道或管道。 至少两个检测器安装在第一主体上，用于检测表示流体或第二主体上的干扰的噪声信号。 相关装置产生用于从来自检测器的信号产生至少两个相关或自相关曲线的数据。 然后将来自相关装置的数据组合以产生组合的互相关或自相关曲线，从该相关曲线可以计算相对速度。
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公开(公告)号：US3888120A
公开(公告)日：1975-06-10
申请号：US35480373
申请日：1973-04-26
申请人： FISCHER & PORTER CO
发明人： BURGESS THOMAS H
CPC分类号： G01P5/04 , G01F1/3263 , G01P5/01
摘要： A flowmeter including a conduit-forming a passage for the fluid to be measured and an obstacle assembly mounted therein capable of generating strong, stabilized fluidic oscillations which cause a deflectable non-streamlined section of the assembly to vibrate at a corresponding rate. The vibrations are sensed by a strain gauge to produce a signal whose frequency is proportional to the flow rate of the fluid passing through the conduit.
摘要翻译： 一种流量计，其包括形成用于待测量流体的通道的管道和安装在其中的障碍物组件，其能够产生强烈的，稳定的流体振荡，其导致组件的可偏转的非流线型部分以相应的速率振动。 振动由应变计检测以产生频率与通过导管的流体的流速成比例的信号。
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公开(公告)号：US3824853A
公开(公告)日：1974-07-23
申请号：US6351470
申请日：1970-08-13
发明人： MAHON R
摘要： The angle of attack effects on the primary sensing element of an aircraft altitude/airspeed measuring instrument are minimized and controlled by means of a shroud device having a particular inlet shape which surrounds and isolates such sensing element. The primary element includes an upstream cylindrical member and a downstream disc-like member spaced from the cylindrical member by a predetermined distance. Fluid parameter fluctuations are produced in the airstream behind the cylinder-disc structure which are directly related to true airspeed. The measured fluctuation frequency, however, is also influenced by the angle of attack of the aircraft. This latter effect constitutes a source of instrument error which the shroud device minimizes and controls.
摘要翻译： 攻角对飞机高度/空速测量仪器的主感测元件的影响被最小化，并通过具有特定入口形状的护罩装置进行控制，围绕并隔离这种传感元件。 主要元件包括上游圆筒形构件和与圆柱形构件隔开预定距离的下游圆盘形构件。 在气缸 - 圆盘结构后面的气流中产生与真实空速直接相关的流体参数波动。 然而，测量的波动频率也受到飞机的迎角的影响。 后一种效应构成了护罩装置最小化和控制的仪器误差的来源。
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8.发明申请METHOD AND SYSTEM FOR DETERMINING AERODYNAMIC LOADS FROM DOWNSTREAM FLOW PROPERTIES 有权用于确定下游流动特性的气动载荷的方法和系统公开(公告)号：US20160153825A1
公开(公告)日：2016-06-02
申请号：US14954222
申请日：2015-11-30
发明人： Arun S. MANGALAM , Siva M. MANGALAM
CPC分类号： G01P5/01 , G01P5/24 , G01P5/26 , G01P21/025
摘要： A method is provided for determining flow conditions for a body immersed in a fluid. The method comprises obtaining flow sensor data downstream of the leading edge stagnation point (LESP) using one or more minimal calibration flow sensors. The method further comprises obtaining at least one normalizing flow parameter value and normalizing the flow sensor data using the at least one normalizing flow parameter value. The method also comprises determining an overall flow condition for the body using the normalized flow sensor data.
摘要翻译： 提供了一种用于确定浸入流体中的身体的流动状态的方法。 该方法包括使用一个或多个最小校准流量传感器获得前缘停滞点（LESP）下游的流量传感器数据。 该方法还包括获得至少一个归一化流量参数值，并使用至少一个归一化流量参数值对流量传感器数据进行归一化。 该方法还包括使用归一化的流量传感器数据确定身体的总体流量状况。
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公开(公告)号：US20140139820A1
公开(公告)日：2014-05-22
申请号：US13684040
申请日：2012-11-21
发明人： Pierre Vigneaux , Eve Le Bastard , Thomas Barrou
IPC分类号： G01P5/26
CPC分类号： G01P5/01
摘要： A flow sensing apparatus includes a light source, at least one fiber Bragg grating and at least one optical fiber. The apparatus may be inserted into a flowing fluid stream, and the fiber Bragg grating detects the vortices of the Von Karman street in the wake of the apparatus. The fiber Bragg grating reflects light emitted from the light source, and the spectral nature of the reflected light provides information concerning the fluid velocity in the flowing stream.
摘要翻译： 流量检测装置包括光源，至少一个光纤布拉格光栅和至少一个光纤。 该装置可以插入流动的流体流中，并且光纤布拉格光栅在装置之后检测到Von Karman街道的涡流。 光纤布拉格光栅反射从光源发射的光，并且反射光的光谱特性提供关于流动流中的流体速度的信息。
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公开(公告)号：US5060522A
公开(公告)日：1991-10-29
申请号：US467486
申请日：1990-01-19
申请人： Hyok S. Lew
发明人： Hyok S. Lew
CPC分类号： G01P5/14 , G01F1/3218 , G01F1/3263 , G01F1/46 , G01F1/86 , G01F1/88 , G01N9/32 , G01P5/01
摘要： A vortex shedding flowmeter includes at least one total pressure hole emerging through the leading edge of the vortex generator of an elongated cylindrical shape disposed perpendicular to the direction of the fluid flow and at least one static pressure hole emerging through at least one of the two side faces of the vortex generator, wherein the dynamic pressure of the fluid flow is determined from the difference between the total pressure and the static pressure, and the velocity of the fluid is determined from the shedding frequency of vortices shed from the vortex generator; whereby the mass flow rate can be determined from the ratio of the dynamic pressure to the velocity of the fluid and the density of the fluid is determined from the ratio of the mass flow rate to the velocity of the fluid.
摘要翻译： 涡流脱流流量计包括至少一个总压力孔，其通过垂直于流体流动方向设置的细长圆柱形形状的涡流发生器的前缘出现，以及至少一个通过两侧中的至少一个出现的静压力孔 涡流发生器的表面，其中流体流动的动态压力根据总压力和静压之间的差确定，并且流体的速度由从涡流发生器脱落的涡流的脱落频率确定; 从而可以根据动态压力与流体的速度的比值确定质量流量，并且根据质量流量与流体的速度的比率来确定流体的密度。
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