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公开(公告)号：US11733381B2
公开(公告)日：2023-08-22
申请号：US17232163
申请日：2021-04-16
申请人： ZHEJIANG UNIVERSITY
发明人： Liling Jin , Wen Xu
摘要： A sound velocity profile inversion method based on an inverted multi-beam echometer. Said method comprises the following steps: mounting, in an inverted manner, the multi-beam echometer on an underwater submerged buoy or fixing same to a water bottom, transmitting a beam to a water surface by means of a transmitting transducer array, and receiving an echo signal by means of a receiving transducer array; the multi-beam echometer obtaining an angle of arrival and arrival time of an echo according to the received echo signal; solving an EOF according to sound velocity profile prior information, and obtaining a dimension reduction primary function description method of the sound velocity profile; in combination with the EOF, a ray tracing algorithm, a surface sound velocity and multi-beam data, establishing an optimization model; according to the established optimization model, the arrival time and the angle of arrival of the received echo and the surface sound velocity, using an optimization algorithm to obtain an estimation result of the sound velocity profile of a measurement area; and further, calculating a water temperature profile of the measurement area by using an estimated value of the sound velocity profile. Said method can rapidly and accurately track fluctuations of the sound velocity profile and the temperature profile.
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公开(公告)号：US11428569B2
公开(公告)日：2022-08-30
申请号：US16654553
申请日：2019-10-16
发明人： Tongwei Zhang , Lei Yang , Shengjie Qin , Xiangxin Wang , Dequan Lu , Jichao Yang
摘要： The present invention discloses a method for determining an effective sound velocity in the deep sea. The method is applied to an apparatus for determining an effective sound velocity in the deep sea having a transmission point, a receiving point, and an underwater mobile carrier. The transmission point is installed on the sea surface such that the depth of the transmission point is unchanged. The receiving point is installed on the underwater mobile carrier such that the depth of the receiving point changes with movement of the underwater mobile carrier. The underwater mobile carrier can measure a sound velocity profile between the transmission point and the receiving point and a horizontal distance between the transmission point and the receiving point.
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公开(公告)号：US20210231800A1
公开(公告)日：2021-07-29
申请号：US17232163
申请日：2021-04-16
申请人： ZHEJIANG UNIVERSITY
发明人： Liling JIN , Wen XU
摘要： A sound velocity profile inversion method based on an inverted multi-beam echometer. Said method comprises the following steps: mounting, in an inverted manner, the multi-beam echometer on an underwater submerged buoy or fixing same to a water bottom, transmitting a beam to a water surface by means of a transmitting transducer array, and receiving an echo signal by means of a receiving transducer array; the multi-beam echometer obtaining an angle of arrival and arrival time of an echo according to the received echo signal; solving an EOF according to sound velocity profile prior information, and obtaining a dimension reduction primary function description method of the sound velocity profile; in combination with the EOF, a ray tracing algorithm, a surface sound velocity and multi-beam data, establishing an optimization model; according to the established optimization model, the arrival time and the angle of arrival of the received echo and the surface sound velocity, using an optimization algorithm to obtain an estimation result of the sound velocity profile of a measurement area; and further, calculating a water temperature profile of the measurement area by using an estimated value of the sound velocity profile. Said method can rapidly and accurately track fluctuations of the sound velocity profile and the temperature profile.
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公开(公告)号：US10912538B2
公开(公告)日：2021-02-09
申请号：US14509093
申请日：2014-10-08
申请人： FUJIFILM Corporation
发明人： Toshitaka Agano
摘要： An ultrasound diagnostic apparatus includes an ultrasound image producer which produces an ultrasound image from reception data based on a predetermined set sound speed, a reception data image producer which produces a reception data image representing a luminance image of an ultrasonic echo wavefront from the reception data corresponding to a predetermined range on at least one scan line in the ultrasound image, a sound speed determination unit configured to determine an optimum sound speed based on ultrasound images respectively produced by the ultrasound image producer while changing the predetermined set sound speed, and a controller which makes an ultrasound image for diagnosis produced by the ultrasound image producer and the reception data image produced by the reception data image producer be displayed simultaneously on a display unit based on the optimum sound speed determined by the sound speed determination unit.
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5.发明申请公开(公告)号：US20200333178A1
公开(公告)日：2020-10-22
申请号：US16843965
申请日：2020-04-09
发明人： Nicole Leanne Key , Yujun Leng , Nicholas Joseph Kormanik, III , Fangyuan Lou , Douglas Ryan Matthews
摘要： The present disclosure relates to a novel method to monitor rotor blade vibration using unsteady casing pressure. The novel method applies a non-intrusive blade vibration monitoring technique by using an array of unsteady pressure sensors flush-mounted in the casing of a multistage axial compressor. The novel method comprises using spinning mode theory to obtain frequency and nodal diameter information for all pressure waves that can be identified and determining any of the pressure waves that is associated with blade vibration.
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6.发明授权公开(公告)号：US10720064B2
公开(公告)日：2020-07-21
申请号：US16235923
申请日：2018-12-28
摘要： Avionic display systems and methods are provided for generating avionic displays, which include symbology and other graphics pertaining to forecast overpressure events, which are forecast to occur during supersonic aircraft flight. In various embodiments, the avionic display system includes a display device on which an avionic display is produced. A controller architecture is operably coupled to the display device. Storage media contains computer-readable code or instructions that, when executed by the controller architecture, cause the avionic display system to determine whether an overpressure event is forecast to occur due to the predicted future occurrence of a sonic boom, which has a magnitude exceeding a boom tolerance threshold. When the controller architecture determines that an overpressure event is forecast to occur, the avionic display system further generates symbology on the avionic display indicative of or visually signifying the forecast overpressure event.
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公开(公告)号：US20180283934A1
公开(公告)日：2018-10-04
申请号：US15760274
申请日：2016-09-15
IPC分类号： G01H5/00 , G01N29/12 , G01H9/00 , G01N29/07 , G01N29/024 , G01N29/24 , G01N29/036
摘要： Certain embodiments are directed to an acoustograph or acoustic sensor configured as a thermometer or direct specific absorption rate (DSAR) sensor for the measurement of electromagnetic energy.
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公开(公告)号：US09880048B2
公开(公告)日：2018-01-30
申请号：US14898316
申请日：2014-06-13
发明人： James Martin , Daniela Donno , Bence Papp , Arthur Hartog
CPC分类号： G01H9/004 , G01D5/35361 , G01H5/00 , G01V1/52
摘要： An apparatus and method for correcting the wavenumber sensitivity of a distributed fiber optic sensor are disclosed. The distributed fiber optic sensor is deployed in a region of interest to measure a characteristic of an incident acoustic wavefield. A composite response of the distributed sensor is determined based on backscatter optical signals generated by the sensor, where the composite response is indicative of a characteristic of an incident acoustic wavefield. The composite response includes at least a first response having a first wavenumber sensitivity and a second response having a second wavenumber sensitivity. The second wavenumber sensitivity is selected so that wavenumber notches of the first and second responses do not overlap.
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公开(公告)号：US09720122B2
公开(公告)日：2017-08-01
申请号：US14339240
申请日：2014-07-23
发明人： Rocco DiFoggio
CPC分类号： G01V1/50 , E21B47/0005 , E21B47/011 , E21B47/101 , G01H5/00 , G01N29/024 , G01N29/343 , G01N2291/011 , G01N2291/044 , G01V1/40
摘要： Methods, systems, and devices for determining a parameter of interest of downhole fluid using an acoustic assembly comprising a single solid acoustic transmission medium having a face immersed in the downhole fluid. Methods include using characteristics of a plurality of acoustic pulse reflections from a solid-liquid interface at the face of the solid acoustic transmission medium to estimate the parameter of interest in near real-time. The characteristics may comprise a corresponding reflection amplitude and the corresponding unique angle of reflection for each acoustic pulse reflection. Methods may include generating a two dimensional data set from measured characteristics, generating a curve by performing data fitting on the two dimensional data set, and using the reciprocal slope of the curve to estimate the parameter of interest. Methods may include estimating time-dependent values for the parameter of interest substantially continuously while the acoustic assembly is on a single logging run in the borehole.
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公开(公告)号：US20160116330A1
公开(公告)日：2016-04-28
申请号：US14609627
申请日：2015-01-30
发明人： Tetsuya OBA
CPC分类号： G01D11/245 , G01S7/521 , G01S15/931
摘要： An ultrasonic sensor, which can prevent a breakdown caused by the infiltration of water from the outside occurring due to the jet of high-pressure wash water or the like without the deterioration of the sensitivity of an ultrasonic transducer within the range of the fixing-clamping caused by an elastic member, is obtained. The ultrasonic sensor includes a cylindrical sensor case, an ultrasonic transducer that is disposed close to an opening face in the sensor case and includes a vibration surface, and an elastic member that is provided between the ultrasonic transducer and the sensor case and covers a side surface and a bottom of the ultrasonic transducer. An exposed surface end of the elastic member close to the opening face is formed to be thinner than a portion of the elastic member that covers the side surface of the ultrasonic transducer.
摘要翻译： 一种超声波传感器，其可以防止由于高压洗涤水等的喷射而引起的外部水的渗透而不会在固定夹紧范围内的超声波换能器的灵敏度降低 由弹性构件产生。 超声波传感器包括圆柱形传感器壳体，超声波换能器，其布置成靠近传感器壳体中的开口面并且包括振动表面，以及弹性构件，其设置在超声波换能器和传感器壳体之间并且覆盖侧表面 和超声波换能器的底部。 靠近开口面的弹性构件的暴露的表面端形成为比覆盖超声波换能器的侧表面的弹性构件的一部分更薄。
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