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    Low IF architectures for noncontact vital sign detection
    12.
    发明授权
    Low IF architectures for noncontact vital sign detection 有权

    公开(公告)号：US09833200B2

    公开(公告)日：2017-12-05

    申请号：US15154324

    申请日：2016-05-13

    Applicant: University of Florida Research Foundation, Inc.

    Inventor： Jenshan Lin ,  Changyu Wei

    IPC: H04B1/38 ,  A61B5/00 ,  H04L27/00 ,  H04L27/227 ,  H04L27/38 ,  A61B5/05 ,  A61B5/024

    CPC classification number: A61B5/7475 ,  A61B5/024 ,  A61B5/0507 ,  H04L27/0002 ,  H04L27/2273 ,  H04L27/3881

    Abstract: Various examples of methods and systems are provided for vibrational frequency detection (e.g., noncontact vital sign detection) using digitally assisted low intermediate frequency (IF) architectures. In one example, a transceiver system is configured to transmit a modulated signal generated by modulating a local oscillator (LO) signal with an IF carrier; generate an IF signal by down converting a received signal comprising backscatter with the LO signal; and simultaneously sample the IF carrier and the IF signal. A vibration frequency can be determined by demodulating the sampled IF signal with the sampled IF carrier. In another example, a method includes generating and transmitting a modulated signal; receiving backscatter of the modulated signal; generating an IF signal by down converting the received signal with the LO signal; simultaneously sampling the IF carrier and the IF signal; and determining a vibration frequency by demodulating the sampled IF signal with the sampled IF carrier.

    Wavelength division sensing RF vibrometer for accurate measurement of complex vibrations
    13.
    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 。

    Wireless power transfer to biomedical implants
    16.
    发明授权
    Wireless power transfer to biomedical implants 有权

    公开(公告)号：US11682927B2

    公开(公告)日：2023-06-20

    申请号：US17875552

    申请日：2022-07-28

    Applicant: University of Florida Research Foundation, Inc.

    Inventor： Jenshan Lin ,  Lawrence Fomundam

    IPC: H02J50/12 ,  H02J50/20 ,  H02J50/40 ,  H01F38/14

    CPC classification number: H02J50/12 ,  H01F38/14 ,  H02J50/20 ,  H02J50/402

    Abstract: Various examples are provided for wireless power transfer to implants. In one example, a system includes a radio frequency (RF) power source and a transmitter (TX) array comprising an excitation coil and resonant coils distributed about the excitation coil. The TX array can transfer power from the RF power source to a biomedical implant inserted below a skin surface of a subject when the TX array is positioned on the skin surface adjacent to the biomedical implant. A receiver (RX) coil of the biomedical implant can inductively couple with the TX array for the power transfer. The resonant coils can allow power transfer when the RX coil is not aligned with the excitation coil.

    Wireless power transfer to biomedical implants
    17.
    发明授权
    Wireless power transfer to biomedical implants 有权

    公开(公告)号：US11451093B2

    公开(公告)日：2022-09-20

    申请号：US16644863

    申请日：2018-09-05

    Applicant: University of Florida Research Foundation, Inc.

    Inventor： Jenshan Lin ,  Lawrence Fomundam

    IPC: H02J50/12 ,  H02J50/20 ,  H02J50/40 ,  H01F38/14

    Abstract: Various examples are provided for wireless power transfer to implants. In one example, a system includes a radio frequency (RF) power source and a transmitter (TX) array comprising an excitation coil and resonant coils distributed about the excitation coil. The TX array can transfer power from the RF power source to a biomedical implant inserted below a skin surface of a subject when the TX array is positioned on the skin surface adjacent to the biomedical implant. A receiver (RX) coil of the biomedical implant can inductively couple with the TX array for the power. The resonant coils can allow power transfer when the RX coil is not aligned with the excitation coil.

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