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    Random body movement cancellation for non-contact vital sign detection
    1.
    发明授权
    Random body movement cancellation for non-contact vital sign detection 有权
    随机身体动作取消非接触式生命体征检测

    公开(公告)号：US09477812B2

    公开(公告)日：2016-10-25

    申请号：US14276300

    申请日：2014-05-13

    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.

    Inventor： Jenshan Lin ,  Changzhi Li ,  Ya-Chi Liu

    IPC: A61B5/08 ,  G06F19/00 ,  A61B5/05 ,  A61B5/00 ,  G06F17/14

    CPC classification number: A61B5/7214 ,  A61B5/0205 ,  A61B5/024 ,  A61B5/05 ,  A61B5/0507 ,  A61B5/0816 ,  A61B5/6823 ,  A61B5/7278 ,  A61B5/742 ,  G01S7/032 ,  G01S7/354 ,  G01S7/40 ,  G01S13/34 ,  G01S13/536 ,  G01S13/87 ,  G01S13/88 ,  G06F17/14 ,  G06F19/00 ,  G06F19/3418 ,  G16H80/00

    Abstract: A method and system for cancelling body movement effect for non-contact vital sign detection is described. The method begins with sending on a first electromagnetic wave transceiver a first electromagnetic signal with a first frequency to a first side of a body, such as a person or animal. Simultaneously using a second electromagnetic wave transceiver a second electromagnetic signal is sent with a second frequency to a second side of a body, wherein the first frequency and the second frequency are different frequencies. A first reflected electromagnetic signal reflected back in response to the first electromagnetic wave on the first transceiver is received and a first baseband complex signal is extracted. Likewise a second reflected electromagnetic signal reflected back in response to the second electromagnetic wave on the second transceiver is received and a second baseband complex signal is extracted. The first baseband complex signal is mathematically combined with the second baseband complex signal to cancel out a Doppler frequency drift therebetween to yield a periodic Doppler phase effect.

    Abstract translation: 描述了用于消除非接触式生命体检测的身体运动效应的方法和系统。 该方法开始于在第一电磁波收发器上发送具有第一频率的第一电磁信号到诸如人或动物的身体的第一侧。 同时使用第二电磁波收发器，第二电磁信号以第二频率发送到身体的第二侧，其中第一频率和第二频率是不同的频率。 接收响应于第一收发器上的第一电磁波反射回的第一反射电磁信号，并且提取第一基带复信号。 类似地，接收响应于第二收发器上的第二电磁波反射回的第二反射电磁信号，并且提取第二基带复信号。 第一基带复信号与第二基带复信号数学地组合以抵消其间的多普勒频移，产生周期性多普勒相位效应。

    Interferometric Doppler Radar and Method for Wave and Water Level Measurement
    4.
    发明申请
    Interferometric Doppler Radar and Method for Wave and Water Level Measurement 审中-公开
    干涉多普勒雷达和波和水位测量方法

    公开(公告)号：US20160209260A1

    公开(公告)日：2016-07-21

    申请号：US15000776

    申请日：2016-01-19

    Applicant: University of Florida Research Foundation, Inc. ,  Texas Tech University Systems

    Inventor： Jennifer A. Rice ,  Changzhi Li ,  Changzhan Gu ,  Justin R. Davis

    IPC: G01F23/284 ,  G01S13/87

    CPC classification number: G01F23/284 ,  G01S7/003 ,  G01S13/36 ,  G01S13/583 ,  G01S13/70 ,  G01S13/87 ,  G01S13/88 ,  G01S2007/358

    Abstract: Devices, methods and systems for wave and water level measurement using a single DC (direct current)-coupled CW (continuous wave) Doppler radar for detecting water elevation changes in time when installed up to several meters from the water surface. The radar is wireless and can stream continuous data to a local PC (personal computer) or base station in range of its radio. The radar can sample up to 40 Hz and can run on batteries for continuous sampling. The radars can include multiple radar configurations of 1, 2 and 4 radar configurations. Applications for this radar can include the measurement of beach run-up, free surface elevation in tidal zones, and storm surge elevations near bridges and critical infrastructure during storm events.

    Abstract translation: 使用单个DC（直流）耦合CW（连续波）多普勒雷达进行波浪和水位测量的装置，方法和系统，用于在从水面安装多达几米时检测时间的水位变化。 雷达是无线的，可以将连续的数据流传输到其无线电范围内的本地PC（个人计算机）或基站。 该雷达可以采样高达40 Hz，并可以运行电池进行连续采样。 雷达可以包括1,2和4雷达配置的多雷达配置。 这种雷达的应用可以包括沙尘暴的测量，潮汐区的自由地面高程，以及暴风雨事件期间桥梁和关键基础设施附近的风暴潮高潮。

    Wavelength division sensing RF vibrometer for accurate measurement of complex vibrations
    5.
    发明授权
    Wavelength division sensing RF vibrometer for accurate measurement of complex vibrations 有权
    波分传感RF振动计，用于精确测量复杂振动

    公开(公告)号：US09200945B2

    公开(公告)日：2015-12-01

    申请号：US13692892

    申请日：2012-12-03

    Applicant: UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.

    Inventor： Jenshan Lin ,  Yan Yan ,  Changzhi Li

    IPC: G01H9/00

    CPC classification number: G01H9/00

    Abstract: Embodiments of the present invention provide a method for non-contact detection techniques of mechanical vibrations utilizing a radio frequency system incorporating multiple carrier wavelengths. The new detection method measures multiple harmonic pairs at a carrier frequency and improves the detection accuracy and reliability by first inspecting the Bessel function coefficient of each harmonic and then determining the harmonic amplitude. The original mechanical vibration can then be reconstructed. Embodiments can be used to realize sensing of complex non-sinusoidal vibrations using a wavelength division sensing technique and allow non-contact detection through walls, smoke, fog or other low visibility environments with the advantage of longer range detection and easy integration at a low cost.

    Abstract translation: 本发明的实施例提供一种利用包含多个载波波长的射频系统的机械振动的非接触检测技术的方法。 新的检测方法以载波频率测量多个谐波对，首先检查每个谐波的贝塞尔函数系数，然后确定谐波幅度，提高检测精度和可靠性。 然后可以重建原始的机械振动。 可以使用实施例来实现使用波分传感技术来检测复杂的非正弦振动，并允许通过墙壁，烟雾，雾或其他低可见度环境进行非接触检测，具有更长距离检测和易于以低成本集成的优点 。

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