Six-dimensional force sensor with high sensitivity and low inter-dimensional coupling

    公开(公告)号:US11650117B2

    公开(公告)日:2023-05-16

    申请号:US16973690

    申请日:2020-04-22

    IPC分类号: G01L5/00 G01L5/1627 G01L1/22

    CPC分类号: G01L5/1627 G01L1/2262

    摘要: The present invention discloses a six-dimensional force sensor with high sensitivity and low inter-dimensional coupling, including a clockwise or counterclockwise swastika-shaped beam, vertical beams, a rectangular outer frame, and strain gauges; the clockwise or counterclockwise swastika-shaped beam includes a cross-shaped transverse beam and four rectangular transverse beams; a center of the cross-shaped transverse beam is provided with several force application holes used for applying forces and moments; four tail ends of the cross-shaped transverse beam are each connected to one of the rectangular transverse beams to form a clockwise or counterclockwise swastika-shaped structure; a top end of a vertical beam is connected to a tail end of a corresponding rectangular transverse beam, and bottom ends of the vertical beams are connected to the rectangular outer frame; and there are a plurality of strain gauges to form six groups of Wheatstone bridges that are respectively used for measuring an X-direction force, a Y-direction force, a Z-direction force, an X-direction moment, a Y-direction moment, and a Z-direction moment. Strain gauges for measuring the forces are all pasted on the cross-shaped transverse beam, strain gauges for measuring the X-direction moment and the Y-direction moment are all pasted on the four rectangular transverse beams, and strain gauges for measuring the Z-direction moment are all pasted on the four vertical beams. According to the present invention, the structure is simple, and inter-dimensional coupling is low while high sensitivity is ensured.

    Force sensor and fitting system
    16.
    发明授权

    公开(公告)号:US12044590B2

    公开(公告)日:2024-07-23

    申请号:US17700192

    申请日:2022-03-21

    申请人: SINTOKOGIO, LTD.

    摘要: A force sensor includes a force receiver which receives a force or a moment that acts on a detection target part, and a strain element which is provided to a sensor base and which serves as an elastic support that supports the force receiver. The force sensor includes two systems of detecting sections which each independently detect strain of four beam parts of the strain element, two systems of computing circuits which each independently compute, on the basis of a detection result that has been outputted from a corresponding one of the two systems of detecting sections, the force or the moment that acts on the detection target part, and two systems of output sections which each independently output, as an electrical signal, a computation result that has been outputted from a corresponding one of the two systems of computing circuits.

    PULSE WAVE SENSOR
    17.
    发明公开
    PULSE WAVE SENSOR 审中-公开

    公开(公告)号:US20240230433A1

    公开(公告)日:2024-07-11

    申请号:US18559690

    申请日:2022-04-27

    IPC分类号: G01L1/22 G01L5/1627

    CPC分类号: G01L1/2287 G01L5/1627

    摘要: A pulse wave sensor includes a strain generating body with a circular opening and a strain gauge provided on the strain generating body and including a Cr mixed phase film as a resistor, wherein a diameter of the circular opening is set to d [mm] and a thickness of the strain generating body is set to t [mm], wherein when a material of the strain generating body is SUS and d is 32, a required range of t is 0.059≤t≤0.124; wherein when the material is SUS and d is 22, a required range of t is 0.046≤t≤0.099; wherein when the material is SUS and d is 13, a required range of t is 0.030≤t≤0.067; wherein when the material is SUS and d is 7, a required range of t is 0.026≤t≤0.034; wherein when the material is copper and d is 32, a required range of t is 0.084≤t≤0.166; wherein when the material is copper and d is 22, a required range of t is 0.066≤t≤0.132; wherein when the material is copper and d is 13, a required range of t is 0.044≤t≤0.088; wherein when the material is copper and d is 7, a required range of t is 0.032≤t≤0.050; wherein when the material is aluminum and d is 32, a required range of t is 0.097≤t≤0.212; wherein when the material is aluminum and d is 22, a required range of t is 0.079≤t≤0.168; wherein when the material is aluminum and d is 13, a required range of t is 0.050

    Split bridge circuit force sensor
    18.
    发明授权

    公开(公告)号:US11965789B2

    公开(公告)日:2024-04-23

    申请号:US17885370

    申请日:2022-08-10

    发明人: Ashwinram Suresh

    摘要: A force sensor comprising a beam having a longitudinal axis and a proximal end portion and a distal end portion; a first Wheatstone bridge disposed on a first face of the beam, including multiple tension gauge resistors and multiple compression gauge resistors; a second Wheatstone bridge disposed on the first face of the beam, including multiple tension gauge resistors and multiple compression gauge resistors; wherein at least one tension gauge resistor and at least one compression gauge resistor from each of the first and second Wheatstone bridges is disposed at a proximal end portion of the beam; wherein at least one tension gauge resistor and at least one compression gauge resistor from each of the first and second Wheatstone bridges is disposed at a distal end portion of the beam.

    ELONGATE FORCE SENSOR ASSEMBLY WITH THROUGHGOING BORE

    公开(公告)号:US20240102875A1

    公开(公告)日:2024-03-28

    申请号:US18529321

    申请日:2023-12-05

    发明人: Tal RAHAV Rafi OUZAN

    IPC分类号: G01L5/1627 G01L1/22

    摘要: An elongate force sensor assembly for measuring a force applied in a force application direction and a method of manufacturing the assembly, the force sensor assembly including an elongate force responsive beam element extending along a longitudinal axis which is generally perpendicular to the force application direction, the elongate force responsive beam element being formed with a throughgoing longitudinal bore along the longitudinal axis, at least one strain gauge affixed to the elongate force responsive beam element, each of the at least one strain gauge generating a strain gauge output in response to the force, and a plurality of circuit elements operative to convert the strain gauge output into a force indication, indicating a magnitude of the force.

    Force sensor
    20.
    发明授权

    公开(公告)号:US11933681B2

    公开(公告)日:2024-03-19

    申请号:US17277382

    申请日:2019-09-23

    IPC分类号: G01L1/00 G01L1/22 G01L5/1627

    CPC分类号: G01L1/22 G01L5/1627

    摘要: A force sensor comprising a force sensitive resistor having a common electrode and an electrode array separated by a force sensitive resistor material. The sensor includes a preload structure, where the preload structure imparts a force on the force sensitive resistor material. The sensor may also include a signal conditioning board to read a signal from the electrode array and convert it to a digital output.