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1.发明公开公开(公告)号：US20240329239A1
公开(公告)日：2024-10-03
申请号：US18613083
申请日：2024-03-21
Applicant: The University of Hong Kong
Inventor： Chenshu WU , Yi ZHANG , Weiying HOU
CPC classification number: G01S15/04 , A61B8/08 , B60Q9/00 , G01S15/50 , A61B2503/06
Abstract: The present invention provides a statistical acoustic sensing (SAS)-based method and system for in-vehicle Child Presence Detection. The SAS-based method comprises: transmitting acoustic signal to a subject in a vehicle cabin; receiving acoustic multipath signals scattered by the subject; and processing the acoustic multipath signals to detect presence of the subject by: extracting a plurality of channel impulse response (CIR) data from the received acoustic multipath signals; aggregating the extracted CIR data to estimate acoustic channel state information (CSI); obtaining an autocorrelation function (ACF) of the acoustic CSI based on a statistical acoustic sensing (SAS) model; and performing motion detection and breath tracking on basis of the ACF to detect presence of the subject in the vehicle cabin. The present invention can leverage in-car audio systems to detect presence of young children including newborns in an accurate and responsive manner.
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公开(公告)号：US11885876B2
公开(公告)日：2024-01-30
申请号：US17017724
申请日：2020-09-11
Applicant: QISDA CORPORATION
Inventor： Fu-Sheng Jiang , Chun-Chieh Wang , Yi-Hsiang Chan , Heng-Yi Shiu , Hsin-Chih Liu
Abstract: An underwater ultrasonic device includes a curvilinear ultrasonic transducer and a plurality of straight linear ultrasonic transducers. The straight linear ultrasonic transducers are disposed with respect to the curvilinear ultrasonic transducer. A first angle is included between the straight linear ultrasonic transducers. One of the curvilinear ultrasonic transducer and the straight linear ultrasonic transducer is configured to transmit a plurality of ultrasonic signals. Another one of the curvilinear ultrasonic transducer and the straight linear ultrasonic transducer is configured to receive a plurality of reflected signals of the ultrasonic signals.
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3.发明申请公开(公告)号：US20220221573A1
公开(公告)日：2022-07-14
申请号：US17145134
申请日：2021-01-08
Applicant: GOOGLE LLC
Inventor： Andrew Felch , Christopher Findeisen , JinJie Chen , Mark Alexander , Shang Shi , Zhuo Wang
Abstract: Embodiments are provided for managing the operation of sensors in an electronic device. According to certain aspects, the electronic device may detect a change in motion from a set of lower-sensitivity sensor data generated by a sensor(s) operating in a lower-sensitivity mode. When the change in motion is detected and during a timeout window, the sensor(s) may generate an additional set of lower-sensitivity sensor data and a set of higher-sensitivity sensor data. The electronic device may initially confirm the change in motion based on analyzing the set of higher-sensitivity sensor data. Further, the electronic device may determine that the additional set of lower-sensitivity does not indicate an additional change in motion, and may deem the confirmation of the change in motion as a false positive.
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公开(公告)号：US11194044B2
公开(公告)日：2021-12-07
申请号：US16790389
申请日：2020-02-13
Inventor： Alexey Abdulov
Abstract: Methods and devices for detecting movement of an object includes: receiving a plurality of output signal values from a sound wave receiver, each of the plurality of output signal values being representative of a distance between the object and the sound wave receiver; determining, based on the received plurality of output signal values, a difference value representative of a difference between a first output signal value and a second output signal value among the plurality of output signal values; determining whether the difference value is representative of motion of the object based on whether the difference value has a magnitude between a predetermined minimum threshold and a predetermined maximum threshold; and outputting a motion detection signal if the difference value is determined to have a magnitude between the predetermined minimum threshold and the predetermined maximum threshold.
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公开(公告)号：US11073612B2
公开(公告)日：2021-07-27
申请号：US15745459
申请日：2015-07-23
Applicant: B-K Medical Aps
Abstract: A method for determining a flow acceleration directly from beamformed ultrasound data includes extracting a sub-set of data from the beamformed ultrasound data, wherein the sub-set of data corresponds to predetermined times and predetermined positions of interest, determining the flow acceleration directly from the extracted sub-set of data, and generating a signal indicative of the determined flow acceleration. An apparatus includes a beamformer (112) configured to processes electrical signals indicative of received echoes produced in response to an interaction of a transmitted ultrasound signal with tissue and generate RF data, and an acceleration flow processor (114) configured to directly process the RF data and generate a flow acceleration therefrom.
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Patent Agency Ranking
公开(公告)号：US10982984B2
公开(公告)日：2021-04-20
申请号：US15795455
申请日：2017-10-27
Applicant: YSI, INC.
Inventor： Muthiah Radhakrishnan , Martin Milanov , Daniel J. Wagenaar , Issac Jones
IPC: G01F1/00 , G01S19/13 , G01F1/66 , G01C13/00 , G01S15/50 , G01S15/88 , G05D1/00 , H04W88/00 , G01D1/00 , G05D1/02
Abstract: A system for determining a measurement of a discharge of a streamflow in open channel conditions using a velocity-area technique featuring a signal processor configured to receive ADCP measurement signaling containing information about ADCP measurements taken in conjunction with the streamflow, GPS signaling containing information about GPS readings in conjunction with ADCP measurements, and signaling containing information about a projection or virtual tag line using two (2) Global Position System (GPS) locations having start and end latitudes and longitudes at a measurement site in a hydrographic operation for a measurement of a discharge in open channel conditions, and an instantaneous GPS position for a station; and determine control signaling containing information to take the ADCP measurements and the GPS readings in conjunction with the ADCP measurements, as well as corresponding signaling containing information about the measurement of the discharge of the streamflow, based upon a respective distance between each station in relation to the projection or virtual tag line, as well as ADCP signaling and the GPS signaling received, using Differential Global Position System (DGPS) or Real Time Kinematic GPS (RTK GPS).
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公开(公告)号：US20190354209A1
公开(公告)日：2019-11-21
申请号：US16417184
申请日：2019-05-20
Applicant: UltraSense Systems, Inc.
Inventor： Hao-Yen Tang , Sina Akhbari , Mo Maghsoudnia , Man-Chia Chen
Abstract: An ultrasound input device can be coupled to a material layer having an external surface located opposite the material layer from the ultrasound input device. The ultrasound input device can transmit an emitted signal through the material layer towards the external surface and receive a set of reflected ultrasound signals associated with the emitted signal. The set of reflected ultrasound signals comprises at least one reflected ultrasound signal, and the set of reflected ultrasound signals can be associated with a touch event between an object and the external surface. A system can comprise one or more data processors configured for performing operations including determining an energy signal associated with the set of reflected ultrasound signals, extracting feature information associated with the energy signal, determining an inference associated with the object based on the extracted feature information, and generating an output signal associated with the determined inference.
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8.发明申请公开(公告)号：US20050080329A1
公开(公告)日：2005-04-14
申请号：US10899036
申请日：2004-07-27
Applicant: Takanobu Uchibori
Inventor： Takanobu Uchibori
CPC classification number: A61B8/488 , A61B8/06 , G01S7/52066 , G01S15/8979
Abstract: An ultrasonic Doppler diagnostic equipment comprising a spectrum measurement unit which measures a Doppler spectrum, a decision unit which determines processing conditions of an average process on the basis of power values of spectral components in the Doppler spectrum, an average process unit which performs the average process of the Doppler spectrum on the basis of the processing conditions determined by the decision unit, and a display unit which displays a Doppler spectral image on the basis of the Doppler spectrum subjected to the average process by the average process unit. According to the configuration, the ultrasonic Doppler diagnostic equipment can improve discontinuities in those spectral components of small power values which are susceptible to interference noise, in the Doppler spectral image, and it can generate image data of high resolution.
Abstract translation: 一种超声波多普勒诊断装置，其特征在于，包括测定多普勒频谱的频谱测定单元，基于多普勒频谱的频谱分量的功率值决定平均处理的处理条件的决定单元，进行平均处理的平均处理单元 基于由判定单元确定的处理条件的多普勒频谱;以及显示单元，其基于由平均处理单元进行的平均处理的多普勒频谱显示多普勒频谱图像。 根据该结构，在多普勒频谱图像中，超声波多普勒诊断装置可以改善在多普勒频谱图像中易受干扰噪声影响的小功率值的频谱分量的不连续性，并且可以生成高分辨率的图像数据。
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9.发明授权Method for calculation of blood velocity and blood velocity spread from multi gated doppler signals 失效用于计算多门控多普勒信号的血液速度和血液速度扩散的方法
公开(公告)号：US5560363A
公开(公告)日：1996-10-01
申请号：US379208
申请日：1995-01-27
Applicant: Hans Torp , Kjell Kristoffersen
Inventor： Hans Torp , Kjell Kristoffersen
CPC classification number: A61B8/06 , G01P5/22 , G01P5/244 , G01S15/582 , G01S15/8979
Abstract: A method for velocity estimation based on a complex demodulated doppler signal in a multi-gated doppler. The method is based on the autocorrelation function estimates of the complex demodulated doppler signal. Contribution to the correlation function from the receiver noise is found by measuring the noise in absence of echo signals. The obtained values are subtracted from the correlation estimates before further processing. A limited number of candidates for the true velocity are calculated from the autocorrelation function phase.
Abstract translation: 一种基于多门控多普勒中复合解调多普勒信号的速度估计方法。 该方法基于复数解调多普勒信号的自相关函数估计。 通过在不存在回波信号的情况下测量噪声来发现对接收机噪声的相关函数的贡献。 在进一步处理之前从相关估计中减去获得的值。 从自相关函数阶段计算真实速度的有限数量的候选。
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公开(公告)号：US5257545A
公开(公告)日：1993-11-02
申请号：US790732
申请日：1991-11-08
Applicant: Man K. Au-Yang
Inventor： Man K. Au-Yang
CPC classification number: F16K37/00 , F16K37/0083 , G01H9/008 , G01N29/07 , G01S15/50 , G01N2291/02854 , G01N2291/044
Abstract: A non-intrusive vibration measurement system and method using commercial ultrasonic instruments together with digital signal filtering and analysis techniques is adapted to quantitatively detect vibrations as small as 0.04-inch peak-to-peak. The system and its methodology is used for in-service vibration monitoring of internal components of check valves, pumps, nuclear reactors, steam generators and heat exchangers, especially when the vibration frequency is too low for quantitative analysis by accelerometers and when the strain induced is too low for strain gauge analysis, and when the vibrating component is in an "encased" environment.
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