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1. 发明申请

US20190212177A1 METHOD OF DETECTING FLUID FLOWS, CORRESPONDING DEVICE AND COMPUTER PROGRAM PRODUCT 审中-公开
公开(公告)号：US20190212177A1
公开(公告)日：2019-07-11
申请号：US16227368
申请日：2018-12-20
申请人： STMicroelectronics S.r.l.
发明人： Fabio Passaniti , Enrico Rosario Alessi
IPC分类号： G01F1/72 , G01N29/02 , G01F1/36 , G01M3/28
CPC分类号： G01F1/72 , G01F1/36 , G01F1/712 , G01M3/20 , G01M3/26 , G01M3/28 , G01N29/02 , G01P5/14 , G01P5/22
摘要： A method includes: receiving, from a plurality of sensors, detection signals indicative of fluid flow, the fluid flow having a direction and a speed, the plurality of sensors having respective mutual positions and distances between pairs of sensors in the plurality of sensors; determining, as a function of the detection signals, a first detection sensor in the plurality of sensors detecting the fluid flow prior to other sensors in the plurality of sensors; determining time delays between detection of the fluid flow by a first sensor and by a second sensor in each pair of sensors in the plurality of sensors; and determining a fluid flow velocity vector indicative of the direction and the speed of the fluid flow as a function of the mutual positions and distances between the pairs of sensors in the plurality of sensors and the time delays.

2. 发明申请

US20180330520A1 METHOD AND SYSTEM FOR CALIBRATING A VELOCIMETRY SYSTEM 审中-公开
公开(公告)号：US20180330520A1
公开(公告)日：2018-11-15
申请号：US15592249
申请日：2017-05-11
申请人： Dantec Dynamics A/S
发明人： Christoph Brücker , Bo Beltoft Watz , David Hess
IPC分类号： G06T7/80 , H04N13/02 , G06T7/20 , G06T15/08 , H04N13/00 , G01P3/38
CPC分类号： G06T7/85 , G01P3/38 , G01P5/001 , G01P5/20 , G01P5/22 , G06T7/20 , G06T7/80 , G06T15/08 , G06T2207/30208 , H04N13/128 , H04N13/243 , H04N13/246 , H04N2013/0081
摘要： A method for calibrating a velocimetry system, the velocimetry system including at least one camera for imaging an illuminated volume comprising moving particles according to at least two different fields of view, comprising: receiving preliminary imaging equations; simultaneously acquiring sets of images of the illuminated volume from the fields of view; voxelizing the illuminated volume; dividing each voxelized volume into interrogation volumes and generating templates images of each interrogation volume for each field of view using the preliminary imaging equations, identifying a match between given clusters of particles in the corresponding template image and corresponding clusters of particles in the corresponding set of images; determining position disparities between the given clusters of particles within the template image and the corresponding clusters of particles within the set of images; and for each field of view, modifying the corresponding preliminary imaging equations based on the determined disparities.

3. 发明授权

US09702972B2 Angle independent velocity spectrum determination 有权
公开(公告)号：US09702972B2
公开(公告)日：2017-07-11
申请号：US14646770
申请日：2012-11-28
申请人： B-K MEDICAL APS
发明人： Jorgen Arendt Jensen
IPC分类号： G01S15/58 , G01S7/52 , G01S15/89 , A61B8/06 , G01P5/22 , G01P5/24 , A61B8/08
CPC分类号： G01S15/588 , A61B8/06 , A61B8/14 , A61B8/5207 , G01P5/22 , G01P5/244 , G01S7/5202 , G01S15/8915 , G01S15/8927 , G01S15/8984
摘要： An ultrasound imaging system (100) includes a transducer array (102) that emits an ultrasound beam and produces at least one transverse pulse-echo field that oscillates in a direction transverse to the emitted ultrasound beam and that receive echoes produced in response thereto and a spectral velocity estimator (110) that determines a velocity spectrum for flowing structure, which flows at an angle of 90 degrees and flows at angles less than 90 degrees with respect to the emitted ultrasound beam, based on the received echoes.

4. 发明申请

US20170052044A1 Sensor System For Determining Air Velocities 审中-公开
标题翻译：用于确定气流速度的传感器系统
公开(公告)号：US20170052044A1
公开(公告)日：2017-02-23
申请号：US15237947
申请日：2016-08-16
申请人： Airbus Operations GmbH
发明人： Klaus Renger , Nikolai Potschka
IPC分类号： G01F1/34
CPC分类号： G01F1/34 , G01P5/02 , G01P5/14 , G01P5/22 , G01P21/025
摘要： A sensor system for an aircraft for determining the air velocity of air flowing past the aircraft includes a first sensor and an evaluation device. The first sensor is configured for being arranged at the structure of the aircraft and determines a first response of the structure to a first local pressure fluctuation of a boundary layer of the air flowing past the aircraft. Furthermore, the first sensor generates a first signal on the basis of the determined first response of the structure. The evaluation device is configured for processing said first signal and for determining the actual air velocity on the basis of the first signal.
摘要翻译：用于确定飞过飞机的空气的空气速度的用于飞行器的传感器系统包括第一传感器和评估装置。第一传感器被配置为布置在飞行器的结构处，并且确定结构对流过飞行器的空气的边界层的第一局部压力波动的第一响应。此外，第一传感器基于确定的结构的第一响应产生第一信号。评估装置被配置用于处理所述第一信号并且用于基于第一信号确定实际空气速度。

5. 发明申请

US20140368638A1 METHOD OF MOBILE IMAGE IDENTIFICATION FOR FLOW VELOCITY AND APPARATUS THEREOF 审中-公开
标题翻译：流动速度的移动图像识别方法及其装置
公开(公告)号：US20140368638A1
公开(公告)日：2014-12-18
申请号：US14307658
申请日：2014-06-18
申请人： NATIONAL APPLIED RESEARCH LABORATORIES
发明人： FRANCO LIN , WEN-YI CHANG , LUNG-CHENG LEE , HUNG-TA HSIAO , WHEY-FONE TSAI , TAI-SHAN LIAO , SHUN-CHUNG TSUNG , JIHN-SUNG LAI , CHIN-HSIUNG LOH , SHIH-CHUNG KANG , YAO-YU YANG
IPC分类号： G01B13/00 , H04N7/18
CPC分类号： G01F1/002 , G01F1/7086 , G01P5/22
摘要： The present invention provides a method of mobile image identification for flow velocity and the apparatus thereof. The present invention integrates laser-light module and mobile photographing devices such as smartphones, cameras, or tablet computers. After multiple laser spots are projected on the surface of flowing water, water-surface images including the laser spots are photographed continuously. Then the software program of image identification in the mobile photographing device performs calculations and coordinate conversion. According to the difference between multiple water-surface images taken continuously, the flow-velocity information of the water surface is given.
摘要翻译：本发明提供了一种用于流速的移动图像识别方法及其装置。本发明集成了激光光模块和智能手机，相机或平板计算机等移动摄像装置。在流水表面投射多个激光点后，连续拍摄包括激光斑点在内的水面图像。然后，移动摄影装置中的图像识别软件程序执行计算和坐标转换。根据连续拍摄的多个水面图像之间的差异，给出了水面的流速信息。

6. 发明申请

US20140136142A1 SPEED SENSOR 有权
标题翻译：速度传感器
公开(公告)号：US20140136142A1
公开(公告)日：2014-05-15
申请号：US13673818
申请日：2012-11-09
申请人： AIRMAR TECHNOLOGY CORPORATION
发明人： Kenneth D. Rolt , Frederic S. Boericke, II
IPC分类号： G01S15/58 , G06F17/00
CPC分类号： G01S15/58 , G01P5/22 , G01S7/527 , G01S15/60 , G01S17/58
摘要： Embodiments relate to a speed sensor and a speed sensing method for measuring relative speeds of receivers with respect to particles in a fluid by detecting individual particles. A receiver generates a plurality of signals related to reflections from particles in a region being monitored. A sampling circuit samples the signals, and a processing device processes the signals according to a particle detection scheme to determine speed. Concomitant use of the same receivers allows depth measurement.
摘要翻译：实施例涉及一种用于通过检测单个颗粒来测量接收器相对于流体中的颗粒的相对速度的速度传感器和速度感测方法。接收器产生与被监视区域中的颗粒的反射有关的多个信号。采样电路对信号进行采样，并且处理装置根据粒子检测方案处理信号以确定速度。同时使用相同的接收器可以进行深度测量。

7. 发明申请

US20120173191A1 Airspeed And Velocity Of Air Measurement 审中-公开
标题翻译：空速和空气速度测量
公开(公告)号：US20120173191A1
公开(公告)日：2012-07-05
申请号：US12983402
申请日：2011-01-03
申请人： Lothar B. Moeller
发明人： Lothar B. Moeller
IPC分类号： G01P3/00 , G06F15/00
CPC分类号： G01P5/22 , G01P5/245
摘要： A velocity relevant to a body may be accurately measured using sound waves. Such velocity relevant to a body may be airspeed, i.e., the velocity of the body with respect to the surrounding air, or the velocity of air in the vicinity of the body or along its desired travel path. More specifically, the speed of two or more sounds may be correlated so that an airspeed, or the velocity of air, may be determined by taking into account the fact that sound traveling in the same direction as airflow travels faster than sound traveling in the direction opposite to airflow.
摘要翻译：可以使用声波精确地测量与身体相关的速度。与身体相关的这种速度可以是空速，即身体相对于周围空气的速度，或身体附近的空气速度，或者沿其所需的行进路径。更具体地说，两个或更多个声音的速度可以相关联，以便可以通过考虑以下事实来确定空速或空气速度：与气流相同方向行进的声音比沿着方向行进的声音行进的速度快与气流相反。

8. 发明申请

US20120105628A1 PARTICLE IMAGE VELOCIMETRY METHOD, PARTICLE IMAGE VELOCIMETRY METHOD FOR 3-DIMENSIONAL SPACE, PARTICLE IMAGE VELOCIMETRY SYSTEM, AND TRACER PARTICLE GENERATING DEVICE IN PARTICLE IMAGE VELOCIMETRY SYSTEM 有权
标题翻译：颗粒图像速度测量方法，用于三维空间的粒子图像视频方法，粒子图像视频测量系统和粒子图像速率系统中的跟踪粒子生成装置
公开(公告)号：US20120105628A1
公开(公告)日：2012-05-03
申请号：US13381244
申请日：2010-07-05
申请人： Yuichi Fukuchi , Takashi Yoshino , Minoru Teramura , Gensuke Hoshino
发明人： Yuichi Fukuchi , Takashi Yoshino , Minoru Teramura , Gensuke Hoshino
IPC分类号： H04N7/18
CPC分类号： G01M9/067 , G01P5/001 , G01P5/22 , G01P5/26 , G01S17/58
摘要： A particle image velocimetry system is provided which supplies tracer particles to a flow field around an object (12) from tracer particle supply means, takes an image of reflected light by imaging means (32A, 32B) by irradiating the tracer particles twice with laser light at different times, and determines a velocity vector of the flow field based on the two images obtained of the tracer particles. The two images are each divided into a plurality of test regions, and when first peak value (fp)/second peak value (sp)≧1.2 is satisfied by comparison between a first peak value fp and a second peak value sp of a cross-correlation value of a luminance pattern of tracer particles in each test region of the two images, it is determined that the reliability of the velocity vector is high. Thus, it is possible to enhance the precision of measurement of the state of flow by reliably determining erroneous vectors.
摘要翻译：提供一种粒子图像测速系统，其向示踪剂颗粒供应装置的物体（12）周围的流场提供示踪剂颗粒，通过用激光照射示踪剂颗粒两次，通过成像装置（32A，32B）拍摄反射光的图像并根据获得的示踪粒子的两个图像确定流场的速度矢量。两个图像分别被分成多个测试区域，并且当通过第一峰值值fp和第二峰值值sp之间的比较来满足第一峰值（fp）/第二峰值（sp）≥1.2）时，在两个图像的每个测试区域中的示踪剂颗粒的亮度图案的相关值，确定速度矢量的可靠性高。因此，可以通过可靠地确定错误矢量来提高流量状态的测量精度。

9. 发明申请

US20110216306A1 METHOD FOR DETERMINING THE FLOW OF A FLUID CLOSE TO A SURFACE OF AN OBJECT IMMERSED IN THE FLUID 审中-公开
标题翻译：用于确定流体接近流体中所存在的物体的表面的流动的方法
公开(公告)号：US20110216306A1
公开(公告)日：2011-09-08
申请号：US12673263
申请日：2008-08-13
申请人： Rudolf Rigler
发明人： Rudolf Rigler
IPC分类号： G01P5/22 , G01F1/00
CPC分类号： G01P5/22 , G01F1/7086 , G01F1/712 , G01P5/26
摘要： The invention relates to a Method for determining the flow of a fluid close to a surface of an object immersed in the fluid by analyzing at least one confocal measurement volume in the fluid, comprising the steps of: focusing light into the at least one confocal volume within the fluid; detecting and determining of at least one optical parameter of at least one particle comprised in the confocal volume; and determining the flow velocity of the fluid based on the determination of the at least one optical parameter using a correlation function, in particular an auto correlation function or a cross correlation function. Furthermore, the invention relates to an object immersed in a fluid and comprising a measuring device for carrying out the method.
摘要翻译：本发明涉及一种通过分析流体中的至少一个共聚焦测量体积来确定接近浸入流体中的物体表面的流体的流动的方法，包括以下步骤：将光聚焦到至少一个共焦体积在流体内检测和确定包含在共焦体积中的至少一个粒子的至少一个光学参数; 以及使用相关函数，特别是自相关函数或互相关函数，基于所述至少一个光学参数的确定来确定所述流体的流速。此外，本发明涉及浸没在流体中并包括用于执行该方法的测量装置的物体。

10. 发明授权

US06611319B2 Optical flow sensor using a fast correlation algorithm 有权
标题翻译：光流量传感器采用快速相关算法
公开(公告)号：US06611319B2
公开(公告)日：2003-08-26
申请号：US10057718
申请日：2002-01-29
申请人： Ting-I Wang
发明人： Ting-I Wang
IPC分类号： G01P336
CPC分类号： G01F1/712 , G01F1/7086 , G01P5/22 , G01P5/26
摘要： An optical flow sensor determines the velocity of a moving flow of air or other gas utilizing a plurality of photodetectors spaced apart in a direction parallel to the direction of gas flow. An optical beam is transmitted to the photodetectors across the flowing gas. Scintillations that occur in the flowing gas due to eddies and particulates in the gas are detected in the photodetectors at slightly different times. The output signals of the photodetectors are conditioned, amplified and transformed to digital form. Temporal cross correlation analysis is then performed on the digitized signals in a digital signal processor utilizing a fast correlation algorithm in which the total number of calculations is proportional to 2N, as contrasted with conventional systems in which the number of correlations is proportional to N2. A time differential between signals from the different photodetectors is then calculated electronically. The velocity of gas flow is then determined by dividing the spatial distance of separation between adjacent photodetectors by the time difference at which the same scintillation event is detected by each photodetector.
摘要翻译：光流传感器利用在与气体流动方向平行的方向间隔开的多个光电探测器来确定空气或其它气体的移动流的速度。光束通过流动的气体传输到光电探测器。在稍微不同的时间在光电检测器中检测在气体中由于涡流和颗粒物在流动气体中发生的闪烁。光电检测器的输出信号被调节，放大并转换为数字形式。然后，利用快速相关算法对数字信号处理器中的数字化信号执行时间互相关分析，其中总计数与2N成比例，与传统的系统相关，其中相关数量与N2成比例。然后电子地计算来自不同光电检测器的信号之间的时间差。然后通过将相邻光电探测器之间的间隔的空间距离除以每个光电检测器检测相同闪烁事件的时间差来确定气流的速度。

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