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1. 发明公开

US20240085449A1 Electronic Devices With Anemometers 审中-公开
公开(公告)号：US20240085449A1
公开(公告)日：2024-03-14
申请号：US18350590
申请日：2023-07-11
申请人： Apple Inc.
发明人： David MacNeil , Michael J. Glickman , John P. Bergen , Richard Yeh
IPC分类号： G01P5/24 , G01W1/02
CPC分类号： G01P5/248 , G01W1/02
摘要： An electronic device may include a housing and a display in the housing. The display may be used as an anemometer to measure the speed of ambient air in the device's environment. In particular, the display may be monitored by a temperature sensor until it reaches an equilibrium temperature, at which point it may be heated by increasing the brightness of the display or using a separate heater. After heating, a cooling response of the display may be measured, and the ambient air speed may be calculated based on the cooling response of the display. Instead of measuring the air speed using the display, other components, such as a pressure sensor, may be used to measure the air speed by heating the components and measuring a cooling response of the components. Multiple temperature sensors may be incorporated into the device to determine a wind direction in addition to air speed.

2. 发明授权

US6089104A Ultrasonic flow meter using transit time across tube chords for determining the flow rates 失效
标题翻译：超声波流量计使用穿过管和弦的运输时间来确定流量
公开(公告)号：US6089104A
公开(公告)日：2000-07-18
申请号：US863471
申请日：1997-05-27
申请人： Hak Soo Chang
发明人： Hak Soo Chang
IPC分类号： G01F1/66 , G01P5/18 , G01P5/24
CPC分类号： G01F1/667 , G01F1/662 , G01P5/245 , G01P5/248
摘要： An ultrasonic multi-channel flow rate measuring system provides a single ultrasonic pulse emitting transducer mounted in a circular tube in which fluid flows at a tube cross section intermediate a short straight length of tubing extending upstream and downstream from the emitting transducer location at equal distances (d). A plurality of ultrasonic receiving transducer pairs are mounted respectively in tube cross sections at upstream and downstream ends of the length of tubing at different radial distances from the pulse emitting transducer, thereby defining a plurality of measurement channels within the tubing. The flow rate in the tube is then calculated as a function of the radial distances between the emitting transducer and the receiving transducers in the different measurement channels. Increased flow velocity accuracy is achieved by increasing the number of receiving transducers, thus defining more channels. The size of the transducers is reduced, and pulse emission direction is limited to reduce reflections from tube walls. Operation on all channels simultaneously produces an instantaneous flow rate time period.
摘要翻译：超声波多通道流量测量系统提供了安装在圆形管中的单个超声波脉冲发射换能器，其中流体以相等距离从发射换能器位置的上游和下游延伸的短直管长度的管横截面流动， d）。多个超声波接收换能器对分别安装在与脉冲发射换能器不同的径向距离处的管道长度的上游和下游端的管横截面中，从而在管道内限定多个测量通道。然后根据不同测量通道中的发射换能器和接收换能器之间的径向距离来计算管中的流量。通过增加接收换能器的数量来实现流速精度的提高，从而定义更多的通道。换能器的尺寸减小，并且脉冲发射方向被限制以减少管壁的反射。所有通道上的操作同时产生瞬时流量时间段。

3. 发明授权

US3860867A Circuits for detecting rapid fluctuations in the phase of an a.c. signal 失效
标题翻译：用于检测交流信号相位中的快速波动的电路
公开(公告)号：US3860867A
公开(公告)日：1975-01-14
申请号：US38168073
申请日：1973-07-19
申请人： KENT LTD G
发明人： JOHNSON PETER ALAN
IPC分类号： G01F1/66 , G01P5/24 , G01R25/00
CPC分类号： G01P5/248 , G01R25/00
摘要： A circuit for detecting rapid fluctuations in the phase of an A.C. signal, comprising a phase detector adapted to receive the A.C. signal at one of its input terminals and at the other of its input terminals an A.C. signal generated by a controlled oscillator and to provide an output signal dependent on the phase difference between the two signals applied to its input terminals, filter means through which the output of the phase detector is supplied to the controlled oscillator in such a manner that the output of the oscillator is held stably by negative feedback at a frequency equal to the means frequency of the A.C. signal, the filter means preventing rapid changes in the output of the phase detector from being applied to the controlled oscillator, and means for comparing the phase of the A.C. signal with that of the oscillator output thereby to provide an output dependent on the rapid fluctuations on phase of the A.C. signal.
摘要翻译：一种用于检测AC信号相位的快速波动的电路，包括相位检测器，其适于在其输入端之一和另一输入端处接收由受控振荡器产生的AC信号的AC信号，输出信号取决于施加到其输入端子的两个信号之间的相位差，滤波器装置，通过该滤波器装置将相位检测器的输出提供给受控振荡器，使得振荡器的输出通过负反馈稳定地保持频率等于交流信号的装置频率，滤波器装置防止相位检测器输出的快速变化施加到受控振荡器，以及用于将交流信号的相位与振荡器输出相位相比较的装置以提供取决于AC信号的相位上的快速波动的输出。

4. 发明授权

US11680959B2 Systems and methods for determining wind velocity 有权
公开(公告)号：US11680959B2
公开(公告)日：2023-06-20
申请号：US17188157
申请日：2021-03-01
申请人： BNSF RAILWAY COMPANY , AIRFLOW SCIENCES CORPORATION
发明人： Brian J. Dumont , James Paul , Matthew Fleming , Paul Harris , Corey D. Wills , Corey T. Pasta , Paul K. Gabler , Dennis W. Morgart
IPC分类号： G01P5/24 , B61K13/00 , G01P5/06 , G01P13/04
CPC分类号： G01P5/248 , B61K13/00 , G01P5/06 , G01P13/045
摘要： In one embodiment, a system includes a vehicle, one or more probes coupled to the vehicle, and a controller. The vehicle is operable to traverse a distance. The one or more probes are operable to measure wind pressure and generate one or more wind pressure measurements. The controller is operable to receive the one or more wind pressure measurements from the one or more probes, determine a wind angle relative to the vehicle using the one or more wind pressure measurements, and determine a wind speed relative to the vehicle using the one or more wind pressure measurements and the wind angle.

5. 发明授权

US10871502B2 Rotating three-dimensional ultrasonic anemometer and method of measuring three-dimensional wind velocity using the same 有权
公开(公告)号：US10871502B2
公开(公告)日：2020-12-22
申请号：US16315564
申请日：2018-04-23
申请人： KOREA AEROSPACE RESEARCH INSTITUTE
发明人： Byeong Hee Chang , Seunghoon Lee , Tae Hwan Cho , Yang Won Kim
IPC分类号： G01P5/06 , F03D3/04 , G01P5/24 , G01H11/06 , F03D17/00
CPC分类号： G01P5/06 , F03D3/0409 , F03D17/00 , G01H11/06 , G01P5/24 , G01P5/248 , F05B2270/32 , F05B2270/321
摘要： Provided are a three-dimensional (3D) ultrasonic anemometer, a 3D wind velocity measuring method, and a wind turbine. The 3D ultrasonic anemometer includes: an ultrasonic sensor including three pairs of ultrasonic transceivers arranged in different directions, wherein the ultrasonic sensor is installed at a rotation body rotating around a rotation axis and rotates around the rotation axis together with the rotation body; a signal processor outputting a 3D sensed wind velocity sensed by the ultrasonic sensor; and a coordinate converter converting the 3D sensed wind velocity into a 3D fixed wind velocity on a fixed coordinate system by using a rotation angle φ of the rotation body.

6. 发明申请

US20170138773A1 Method Of Measuring Time Of Flight Of An Ultrasound Pulse 审中-公开
公开(公告)号：US20170138773A1
公开(公告)日：2017-05-18
申请号：US15322456
申请日：2015-06-29
申请人： PCME LIMITED
发明人： Neil D'Souza-Matthew , Robert Fryers , Roger Millington , David Unitt
IPC分类号： G01F1/66
CPC分类号： G01F1/667 , G01F1/662 , G01F23/2962 , G01P5/248
摘要： Method and apparatus relating to ultrasound flow probes Measurement of time of flight of ultrasound pulses comprises: transmitting the pulses across a fluid flow; detecting a waveform (200) of the pulses, generating a cross-correlation between the waveform (200) and a tone (210) and identifying a plurality of peaks (220) in the cross-correlation; fitting a curve template (310) to the waveform at locations (300) corresponding to the peaks (220) and identifying the location (330) of the minimum error; performing a further cross-correlation (420) between the waveform (200) and the tone (210) over only a portion of the waveform (200) containing the minimum error location (330); and determining the temporal location corresponding to the maximum (430) of the further cross-correlation (430).

7. 发明授权

US5877416A Anemometer employing standing wave normal to fluid flow and travelling wave normal to standing wave 失效
标题翻译：风速计采用驻波常规流体流动，行波与驻波正交
公开(公告)号：US5877416A
公开(公告)日：1999-03-02
申请号：US840205
申请日：1997-04-11
申请人： Savvas Kapartis
发明人： Savvas Kapartis
IPC分类号： G01F1/66 , G01P5/24 , G01P13/04 , G01F13/00 , G01P5/18
CPC分类号： G01F1/662 , G01F1/667 , G01P13/045 , G01P5/248
摘要： An anemometer comprises an acoustic resonant cavity 1 between two plates 2 and 3 and open in the direction of flow of a fluid, the cavity having at least one pair of electro acoustic transducers 5 which are energised at an Eigenfrequency to produce a standing wave perpendicular to the direction of flow of the fluid and a travelling wave perpendicular to the standing wave. By using the time delays or phase shifts between the signal energising a transducer and the signal generated by the response of the other transducer the velocity of flow of the fluid can be calculated. Compensation is provided for changes in the Eigenfrequency caused by changes in the environment.
摘要翻译：风速计包括在两个板2和3之间的声学谐振腔1，并且在流体的流动方向上开放，空腔具有至少一对电声换能器5，其在本征频率被激励以产生垂直于流体的流动方向和垂直于驻波的行波。通过使用对换能器通电的信号与由另一换能器的响应产生的信号之间的时间延迟或相移，可以计算流体的流速。为环境变化引起的本征频率变化提供了补偿。

8. 发明授权

US5811689A Fluid flow meter 失效
标题翻译：流体流量计
公开(公告)号：US5811689A
公开(公告)日：1998-09-22
申请号：US725536
申请日：1996-10-03
申请人： James Digby Yarlet Collier , Christopher Davies , Christopher James Newton Fryer , Alain Henri Waha
发明人： James Digby Yarlet Collier , Christopher Davies , Christopher James Newton Fryer , Alain Henri Waha
IPC分类号： G01F1/66 , G01P5/24
CPC分类号： G01P5/245 , G01F1/662 , G01F1/667 , G01F1/668 , G01P5/248
摘要： A fluid flow meter comprises a pair of transducers spaced apart in the direction of fluid flow. A transmitter causes acoustic signals to be transmitted in both directions through the fluid by the transducers. A processor determines information relating to the fluid flow by monitoring the time of flight of acoustic signals received by the transducers. Part of the space between the transducers defines a flow path consisting of a flow structure having a plurality of parallel fluid flow passages which extend axially in the direction of flow, wherein the cross-sectional diameters of the passages are chosen such that substantially plane acoustic waves only are transmitted through the passages by the fluid, and wherein under working conditions that fluid flows through each passage such that the ratio of the volume flow rate through the passage to the total volume flow rate remains substantially constant with respect to the total volume flow rate.
摘要翻译：流体流量计包括沿流体流动方向间隔开的一对换能器。发射器使得声信号通过换能器通过流体在两个方向上传播。处理器通过监测由换能器接收的声学信号的飞行时间来确定与流体流动有关的信息。换能器之间的空间的一部分限定了流动路径，该流动路径由具有沿流动方向轴向延伸的多个平行流体流动通道的流动结构组成，其中通道的横截面直径选择为使得基本上平面的声波仅通过流体通过通道传送，并且其中在工作条件下，流体流过每个通道，使得通过通道的体积流量与总体积流量之比相对于总体积流量保持基本恒定。

9. 发明授权

US4336606A Wind speed measurement 失效
标题翻译：风速测量
公开(公告)号：US4336606A
公开(公告)日：1982-06-22
申请号：US189914
申请日：1980-09-23
申请人： Maurice C. Heard
发明人： Maurice C. Heard
IPC分类号： G01P5/24 , G01S15/89 , G01S11/00 , G01W1/00
CPC分类号： G01S15/899 , G01P5/248
摘要： Wind is the large-scale movement of air from one place to another. It is usual for the air to become horizontally stratified, the layers nearer the ground moving more slowly than or in a different direction to those higher up. This change of wind speed with height is known as wind gradient (or wind shear), and it may cause serious problems for aircraft during their approach and landing.Unfortunately, at present there is no satisfactory way of ascertaining the wind gradient situation.The invention provides acceptable apparatus for, and a method of, actually detecting--and preferably measuring--wind gradient at a location, and involves a comparison of the wind speed in the same direction at two or more heights at the location, this comparision being upon the basis of a comparison of the speed of sound in that direction and at those heights, a difference in the apparent speeds indicating the presence of wind gradient. The invention involves: beaming a regular sound wave train between a transmitter/receiver pair positioned and like orientated at each of two or more heights at the location; noting each transceiver pair's received sound wave train phase, and comparing it with its transmitted phase, so as to deduce the wind-caused phase change; and using these deduced phase changes to calculate the actual wind speeds, and thus the relative changes of wind speed with height, in the selected direction.
摘要翻译：风是空气从一个地方到另一个地方的大规模运动。通常，空气变得水平分层，靠近地面的层比不同方向移动得更慢或者沿着不同的方向运动。风速与高度的这种变化称为风向（或风切变），并可能在飞机进入和着陆期间造成严重问题。不幸的是，目前还没有确定风向梯度情况的令人满意的方法。本发明提供了用于实际检测并优选地测量一个位置处的风梯度的可接受的装置和方法，并且涉及在该位置处的两个或多个高度处的相同方向上的风速的比较，该比较是在该方向和这些高度上的声音速度的比较的基础，表示存在风梯度的表观速度的差异。本发明涉及：在位置处的两个或多个高度中的每一个定位和定位的发射机/接收机对之间发射规则声波串; 注意到每个收发器对的接收到的声波相位，并将其与其传输的相位进行比较，以推导出风引起的相位变化; 并使用这些推导的相位变化来计算实际的风速，从而计算出所选方向上的风速与高度的相对变化。

10. 发明授权

US3861211A Ultra-low flow velocity current meter 失效
标题翻译：超低流速电流表
公开(公告)号：US3861211A
公开(公告)日：1975-01-21
申请号：US45450474
申请日：1974-03-25
申请人： US NAVY
发明人： DEWAN RAJINDER N
IPC分类号： G01H5/00 , G01P5/24 , G01F1/00
CPC分类号： G01H5/00 , G01P5/248
摘要： This invention relates to the use of an acoustic signal to determine current velocity of water. The device makes use of a centrally single positioned transducer with four equispaced receivers equi-distant from the transducer. A carrier frequency with two different modulator frequencies are directed to the transducer and the receivers receive the transmitted pulses through the water current. The velocity of the water is determined by measuring the phase angle of the different signals that pass through the water and which are received by the receivers. The different signals permits one to determine the velocity of the water.
摘要翻译：本发明涉及使用声学信号来确定当前的水流速度。该装置利用具有与换能器等距离的四个等间隔的接收器的中央单位置换能器。具有两个不同调制器频率的载波频率被引导到换能器，并且接收器通过水流接收发射的脉冲。水的速度通过测量通过水并且由接收器接收的不同信号的相位角来确定。不同的信号允许人们确定水的速度。

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