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公开(公告)号：US20240310196A1
公开(公告)日：2024-09-19
申请号：US18261528
申请日：2022-06-20
申请人： FLOW-TRONIC S.A.
发明人： Jean-Marie SEVAR
CPC分类号： G01F1/663 , G01P13/045
摘要： A stationary system is for measuring the surface velocity of a fluid flowing in a river, an open channel or an underground pipe. The system includes a non-invasive device measuring the surface velocity of the fluid, and a wind speed and direction measuring device to validate and/or to correct the measurements taken by the non-invasive device in order to take into account the effect of the wind on the surface velocity of the fluid. A method for validates and/or corrects the measurements carried out by the non-invasive device as a function of the wind speed and direction.
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公开(公告)号：US20230408310A1
公开(公告)日：2023-12-21
申请号：US18247089
申请日：2021-10-12
申请人： FLOW-TRONIC S.A.
发明人： Jean-Marie Sevar
IPC分类号： G01F1/58
CPC分类号： G01F1/584
摘要： A sensor assembly is for measuring average velocity of a fluid flowing in a closed conduit or in an open channel. The sensor assembly is adapted to measure average velocity though closed conduits of different sizes or through open channels with different fluid levels. The sensor assembly includes a housing extending across an inside of the closed conduit or to extend vertically in the section of the open channel. The housing includes pairs of electrodes and at least one associated electromagnet for measuring the velocity distribution in the closed conduit or in the open channel. An isolator allows isolation from the pairs of electrodes or from signals of the pairs of electrodes that are not in contact with the fluid flow to be measured. The isolator is configured to be adapted depending on water level in the open channel or size of the closed conduit.
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公开(公告)号：US20220011143A1
公开(公告)日：2022-01-13
申请号：US17289102
申请日：2019-10-31
申请人： Flow-Tronic S.A.
发明人： Jean-Marie SEVAR
IPC分类号： G01F1/66
摘要： The invention relates to a device (7) for measuring the surface velocity of a fluid (10) flowing in a confined space such as through a pipe or a channel (12), said device (7) comprising a patch antenna (1) with a transmitting area (1a) generating a microwave signal and a receiving area (1b) receiving the microwave signal reflected on the surface of the fluid (10), the device (7) being wherein it comprises an electrically conductive tube (8), called reflector tube, with at least the transmitting area (1a) of the patch antenna (1) mounted at one end (8a) of the reflector tube (8) to reduce the side lobes of the generated microwave signal. The invention also relates to the non-invasive method for measuring the surface velocity of the fluid using said device (7).
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公开(公告)号：US20220113173A1
公开(公告)日：2022-04-14
申请号：US17423764
申请日：2020-01-20
申请人： FLOW-TRONIC S.A.
摘要： A method measures surface velocity of a fluid having a free surface flowing through a pipe or a channel. A microwave beam is sent by patch antenna including an emitting patch area and receiving patch areas parallel to the emitting patch area. Microwave signals reflected by the moving fluid free surface are received on the receiving patch areas separated by a predetermined distance. The patch antennae are either in horizontal or vertical planes parallel to the average fluid velocity. For each microwave signal received, a phase shift between microwave signals received by different patch areas is determined to calculate azimuth angles and azimuth position of reflectors on the fluid surface or to calculate the elevation angle corresponding to each signal received. Based on Doppler frequency shifts between the sent and received microwaves and corresponding phase shifts, lateral and/or longitudinal distribution of the surface velocity of the fluid is calculated.
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公开(公告)号：US10704934B2
公开(公告)日：2020-07-07
申请号：US14900104
申请日：2014-06-19
申请人： FLOW-TRONIC S.A.
发明人： Jean-Marie Sevar
摘要： A method calculates mean speed of a fluid flowing in an open channel or a partially filled duct. Fluid having a free surface of width L1 extending between walls of the channel or duct includes local speed measurements at the surface of the fluid over a zone of width L2, the set of local measurements generating a spectrum of discrete data expressed in a temporal domain. The spectrum of discrete data is converted into a spectrum of data expressed in a frequency domain via a Fourier transform. A Gaussian curve is fitted to the spectrum and the mean μ and the standard deviation σ of the Gaussian curve are calculated. L2 and σ enable calculating the distribution of speeds over L2. The ratio L2/L1 is calculated and the mean speed of the fluid within the channel or duct is determined based on the Gaussian curve and the ratio L2/L1.
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6.发明申请METHOD FOR CONVERTING A MEASUREMENT OF LOCAL VELOCITY OF A FLUID IN A CHANNEL OR A DUCT INTO A MEAN VELOCITY 审中-公开用于将通道中的流体的本地速度的测量值转换成平均速度的方法公开(公告)号：US20160138950A1
公开(公告)日：2016-05-19
申请号：US14900104
申请日：2014-06-19
申请人： FLOW-TRONIC S.A.
发明人： Jean-Marie SEVAR
IPC分类号： G01F1/00
摘要： A method calculates mean speed of a fluid flowing in an open channel or a partially filled duct. Fluid having a free surface of width L1 extending between walls of the channel or duct includes local speed measurements at the surface of the fluid over a zone of width L2, the set of local measurements generating a spectrum of discrete data expressed in a temporal domain. The spectrum of discrete data is converted into a spectrum of data expressed in a frequency domain via a Fourier transform. A Gaussian curve is fitted to the spectrum and the mean μ and the standard deviation σ of the Gaussian curve are calculated. L2 and σ enable calculating the distribution of speeds over L2. The ratio L2/L1 is calculated and the mean speed of the fluid within the channel or duct is determined based on the Gaussian curve and the ratio L2/L1.
摘要翻译： 一种方法计算在开放通道或部分填充的管道中流动的流体的平均速度。 具有在通道或管道的壁之间延伸的宽度L1的自由表面的流体包括在宽度为L2的区域上的流体表面处的局部速度测量，该局部测量的集合生成在时域中表达的离散数据的频谱。 离散数据的频谱通过傅里叶变换转换成频域表示的频谱。 高斯曲线适用于光谱，平均值μ和标准偏差σ 计算高斯曲线。 L2和＆sgr 使得能够计算L2上的速度分布。 计算出比率L2 / L1，并且基于高斯曲线和比率L2 / L1来确定通道或管道内的流体的平均速度。
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公开(公告)号：US20230016847A1
公开(公告)日：2023-01-19
申请号：US17782757
申请日：2020-12-15
申请人： Flow-Tronic S.A.
发明人： Jean-Marie SEVAR
摘要： A non-invasive microwave measuring device (01) is for calculating the flow rate of a fluid. The device (01) includes a non-invasive microwave fluid velocity measuring device (03) having a patch antenna or horn antenna to generate a microwave signal (14) that is transmitted at a specific elevation angle α towards the fluid surface (16) and to receive the reflected microwave signal (15) from the fluid surface (16) with a doppler shift frequency. The measuring device (03) is suspended from a drone (02) by a suspension system (04). The suspension system (04) eliminates vibration noise generated by the drone (02). At least one vibration sensor eliminates false velocity readings. At least one angle sensor compensates for Pitch, Roll and Yaw from the drone (02) that influence the fluid surface velocity measurement.
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