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    LIQUID MAGNET SENSOR
    1.
    发明公开
    LIQUID MAGNET SENSOR 审中-公开

    公开(公告)号：US20240272019A1

    公开(公告)日：2024-08-15

    申请号：US18569912

    申请日：2022-06-15

    申请人： FLORIDA ATLANTIC UNIVERSITY BOARD OF TRUSTEES

    发明人： Erik D. ENGEBERG

    IPC分类号： G01L1/12

    CPC分类号： G01L1/122

    摘要： A novel sensor, intended for use in applications for robots, prosthetics, biomedical devices, or the internet of things, using a ferrous magnetic fluid is presented here. The sensor includes a deformable member containing the magnetic fluid therein and an array of Hall effect sensors to measure the changing magnetic field in the fluid as the deformable member is deformed. The sensor was found to be sensitive to varying applied pressure and is capable of resolving both the location and amplitude of externally applied forces. The range of applications for this novel pressure sensor are broad, ranging from robotics to biomedical devices and the Internet of things. The novel sensor can also be used as an orientation sensor or an accelerometer, torque detector and linear shear forces detector.

    Two-dimensional force sensor for measuring first and second forces in a first and second direction
    3.
    发明授权
    Two-dimensional force sensor for measuring first and second forces in a first and second direction 有权

    公开(公告)号：US12013294B2

    公开(公告)日：2024-06-18

    申请号：US17438982

    申请日：2020-03-04

    申请人： KONINKLIJKE PHILIPS N.V.

    发明人： Ype Bernardus Brada ,  Maurits Koenen

    IPC分类号： G01L1/12 ,  G01L1/22 ,  G01L5/164 ,  G01L5/169

    CPC分类号： G01L1/12 ,  G01L1/22 ,  G01L5/164 ,  G01L5/169

    摘要： A two-dimensional force sensor for measuring a first force in a first direction and a second force in a second direction. The sensor comprises a first resilient plate oriented in the second direction, a first end of the first resilient plate being arranged for being coupled to a reference point; a second resilient plate oriented in the first direction, a first end of the second resilient plate coupled to a second end of the first resilient plate and a measurement probe coupled to a second end of the second resilient plate. The measurement probe is mounted on an extension device mounted to the second end of the second resilient plate. The extension device positions the measurement probe at a position deviating from an imaginary cross-section point of the first resilient plate and the second resilient plate by no more than 20% of a length of the extension device.

    Stress sensor and manufacturing method therefor
    4.
    发明授权
    Stress sensor and manufacturing method therefor 有权

    公开(公告)号：US11959815B2

    公开(公告)日：2024-04-16

    申请号：US17329675

    申请日：2021-05-25

    申请人： Murata Manufacturing Co., Ltd. ,  The University of Tokyo

    发明人： Akira Ando ,  Daichi Chiba

    IPC分类号： G01L1/12 ,  H01F10/32 ,  H01F41/30

    CPC分类号： G01L1/12 ,  H01F10/3272 ,  H01F41/302

    摘要： Disclosed herein is a stress sensor that includes a stress detection layer including a laminated body including a first ferromagnetic layer, a first non-magnetic layer, a second ferromagnetic layer, and an antiferromagnetic layer stacked one on another. The antiferromagnetic layer includes Mn, and the magnetization direction of the second ferromagnetic layer is fixed by the exchange bias caused by the exchange coupling with the antiferromagnetic layer. The stress sensor detects a stress by an electric resistance depending upon a relative angle between magnetization directions of the first ferromagnetic layer and the second ferromagnetic layer, the relative angle changing depending upon an externally applied stress.