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    Capacitive force sensor
    91.
    发明授权
    Capacitive force sensor 失效
    电容力传感器

    公开(公告)号：US5447076A

    公开(公告)日：1995-09-05

    申请号：US980786

    申请日：1993-02-24

    Applicant: Karlheinz Ziegler

    Inventor： Karlheinz Ziegler

    IPC: G01L1/14 ,  G01L1/12

    CPC classification number: G01L1/142

    Abstract: A capacitive force sensor is comprised of a base (1) containing a capacitance electrode (3), a cover (8) containing a second capacitance electrode (9) and spacers (7) separating these two components. The material thickness of the base (1) and the cover (8) is such that when a force is applied at least one of the materials constituting the base (1), the cover (8) and the spacers (7) will be compressed to such a degree that a decrease in the distance between the capacitance electrodes (3,9) will result but the materials bridging the areas between the spacers (7) will not be deformed.

    Abstract translation: PCT No.PCT / DE91 / 00671 Sec。 371日期：1993年2月24日 102（e）日期1993年2月24日PCT 1991年8月21日PCT PCT。 出版物WO92 / 04608 电容式力传感器由包含电容电极（3）的基座（1），包含第二电容电极（9）的盖（8）和分离这两个部件的间隔件（7）构成。 基体（1）和盖（8）的材料厚度使得当构成基体（1）的材料中的至少一种施加力时，盖（8）和间隔件（7）将被压缩 达到使得电容电极（3,9）之间的距离减小的程度，但是桥接间隔件（7）之间的区域的材料将不会变形。

    Hull monitoring apparatus and method
    92.
    发明授权
    Hull monitoring apparatus and method 失效
    船体监测装置及方法

    公开(公告)号：US5425275A

    公开(公告)日：1995-06-20

    申请号：US65927

    申请日：1993-05-21

    Applicant: James Lockshaw

    Inventor： James Lockshaw

    IPC: B63B9/00 ,  G01B7/16 ,  G01L1/14 ,  G01L1/20 ,  G01M5/00 ,  G01L1/00

    CPC classification number: G01M5/0033 ,  B63B9/00 ,  G01B7/18 ,  G01L1/142 ,  G01L1/20 ,  G01M5/0083 ,  Y10T428/2804 ,  Y10T428/2848

    Abstract: For detecting strains or breaks in the surface of a boat hull or other structure, the surface is covered with non-intersecting lengths of tape adhered to the surface. The tape has an inner strip of conductive elastomer and an outer strip of the same material, and between them a corrugated layer of copper foil. Both strips and the foil are insulated from each other and the outside. The strips and foil layer are connected to electrical resistance and capacitance measuring devices, which monitor any changes in the electrical properties of the tape lengths, caused by strain or breaking of the surface. Because of the corrugations, the foil will not change its resistance when the tape is elongated or compressed.

    Abstract translation: 为了检测船体或其他结构的表面中的应变或断裂，表面被粘附在表面上的不相交的条带覆盖。 胶带具有导电弹性体的内条和相同材料的外条，并且在它们之间是铜箔的波纹层。 两条条和箔片彼此绝缘和外面。 带和箔层连接到电阻和电容测量装置，其监测由表面的应变或断裂引起的带长度的电特性的变化。 由于波纹，当胶带伸长或压缩时，箔不会改变其电阻。

    Weight and pressure measuring device
    93.
    发明授权
    Weight and pressure measuring device 失效
    重量和压力测量装置

    公开(公告)号：US4909339A

    公开(公告)日：1990-03-20

    申请号：US299758

    申请日：1989-01-23

    Applicant: Michael Burkhardt ,  Hans-Ulrich Augustin

    Inventor： Michael Burkhardt ,  Hans-Ulrich Augustin

    IPC: A61B5/022 ,  G01G5/04 ,  G01G7/06 ,  G01G19/02 ,  G01G19/44 ,  G01G19/50 ,  G01L1/02 ,  G01L1/14

    CPC classification number: A61B5/022 ,  G01G19/022 ,  G01G19/44 ,  G01G19/50 ,  G01G5/04 ,  G01G7/06 ,  G01L1/02 ,  G01L1/142

    Abstract: A weight and pressure measuring device, comprising a fluid filled cushion pad of limited volume, connected to a pressure indicator to measure the pressure produced during pressure loading. Such a measuring device requires little space, is lightweight, and can easily be transported and used. A blood pressure and weight measuring device has an inflatable sleeve which is connected through a tube connection, with a pump device and a pressure measuring device. In order to measure blood pressure as well as weight, by means of such a measuring device, a second inflatable device, with a limited volume, is connected with the pressure measuring device and the pump device. The device measures the pressure produced by the weight load, which is proportional to the weight being determined.

    Abstract translation: 一种重量和压力测量装置，包括有限体积的流体填充缓冲垫，连接到压力指示器以测量在压力加载期间产生的压力。 这样的测量装置需要很小的空间，重量轻，并且可以容易地被运输和使用。 血压和重量测量装置具有通过管连接与泵装置和压力测量装置连接的可充气套筒。 为了测量血压和重量，通过这种测量装置，具有有限体积的第二可充气装置与压力测量装置和泵装置连接。 该装置测量由重量负载产生的压力，该压力与所确定的重量成比例。

    Force transducer
    94.
    发明授权
    Force transducer 失效
    力传感器

    公开(公告)号：US4649759A

    公开(公告)日：1987-03-17

    申请号：US694927

    申请日：1985-01-25

    Applicant: Shih-Ying Lee

    Inventor： Shih-Ying Lee

    IPC: G01G3/12 ,  G01G7/06 ,  G01L1/14

    CPC classification number: G01L1/142 ,  G01G3/12 ,  G01G7/06

    Abstract: Two pairs of parallel plate electrodes forming respectively a sensor capacitor and a reference capacitor are mounted on a parallelogram structure designed to deform under load in such a way that the gap width of the sensor capacitor changes as a function of load while the gap width of the reference capacitor is unaffected by the load. The capacitance of the reference capacitor is, however, similarly affected by temperature, humidity and other physical properties which may affect the dielectric constant of the medium, and is available for use in a ratio circuit to compensate for spurious changes in the sensor capacitance.

    Abstract translation: 形成分别为传感器电容器和参考电容器的两对平行板电极安装在设计成在负载下变形的平行四边形结构，使得传感器电容器的间隙宽度随着负载的变化而变化，而间隙宽度 参考电容不受负载影响。 然而，参考电容器的电容同样受到温度，湿度和可能影响介质的介电常数的其它物理性质的影响，并且可用于比例电路中以补偿传感器电容中的杂散变化。

    Capacitive dynamometer
    95.
    发明授权
    Capacitive dynamometer 失效
    电容式测力计

    公开(公告)号：US4175428A

    公开(公告)日：1979-11-27

    申请号：US864798

    申请日：1977-12-27

    Applicant: Nils A. J. Eilersen

    Inventor： Nils A. J. Eilersen

    IPC: G01L1/14

    CPC classification number: G01L1/142

    Abstract: A capacitive dynamometer comprises an elastic body with a measuring cavity which is deformed in different directions when a mechanical force to be measured is applied to the elastic body. Deformation of the inner wall of the cavity in different directions are picked up in the form of changes of capacity in opposite senses by means of capacitor electrodes co-operating with the inner wall. By applying these changes of capacity to a differential capacity measuring device, a signal may be obtained which is representative of the force to be measured and is not influenced by changes of temperature, because these will change the capacity values of all electrodes in the same sense.

    Abstract translation: 电容测力计包括具有测量腔的弹性体，当测量的机械力被施加到弹性体时，测量腔在不同方向上变形。 通过与内壁协作的电容器电极，以不同方向的容量变化的形式拾取不同方向的空腔内壁的变形。 通过将这些容量变化应用于差分容量测量装置，可以获得代表待测量的力并且不受温度变化的影响的信号，因为这将改变相同意义上的所有电极的容量值 。

    Device for measuring loads, especially transient loads
    96.
    发明授权
    Device for measuring loads, especially transient loads 失效
    用于测量负载，特别是瞬态负载的装置

    公开(公告)号：US4102422A

    公开(公告)日：1978-07-25

    申请号：US674972

    申请日：1976-04-08

    Applicant: Per Lennart Christiansson

    Inventor： Per Lennart Christiansson

    IPC: G01G7/06 ,  G01L1/14 ,  G01G19/02 ,  G01G3/14

    CPC classification number: G01G7/06 ,  G01L1/142

    Abstract: A device comprises for sensing or measuring loads, especially transient loads, such as a load imposed by a wheel of a vehicle driving over the device. The device comprises two electrically conductive plates and an intermediate dielectric and elastomeric or elastic material. In a central plane of the dielectric material a series of threads of steel wire is embedded. Said threads are connected together electrically at one end. At least two spaced capacitor electrodes are constituted by one plate and said threads. The dielectric and elastomeric material is adapted to be engaged by the load and the variation in the capacitance is linearly proportional to the magnitude of the applied load. The two plates are pressed towards each other in order to cause a mechanical preloading of the intermediate material in order to give said linear proportionality.

    Abstract translation: 一种装置包括用于感测或测量载荷，特别是瞬时载荷，例如由在装置上行驶的车辆的轮施加的载荷。 该装置包括两个导电板和中间电介质和弹性或弹性材料。 在电介质材料的中心平面内嵌有一系列钢丝线。 所述螺纹在一端电连接在一起。 至少两个间隔开的电容器电极由一个板和所述螺纹构成。 电介质和弹性体材料适于被负载接合，并且电容的变化与所施加的负载的大小成线性比例。 为了给出所述线性比例性，将两个板彼此挤压以引起中间材料的机械预加载。

    Electromechanical force sensor based on extrema degeneracy point with nonlinear response
    99.
    发明授权
    Electromechanical force sensor based on extrema degeneracy point with nonlinear response 有权

    公开(公告)号：US12104967B2

    公开(公告)日：2024-10-01

    申请号：US17681320

    申请日：2022-02-25

    Applicant: Wisconsin Alumni Research Foundation ,  Wesleyan University

    Inventor： Ramathasan Thevamaran ,  Jizhe Cai ,  Tsampikos Kottos ,  Fred Ellis ,  Rodion Kononchuk

    IPC: G01L1/14

    CPC classification number: G01L1/142

    Abstract: One or more computing devices, systems, and/or methods are provided. In an example, a method includes tuning a sensor comprising a first resonator having an effective gain, a second resonator having an effective loss, and a coupling circuit connected between the first resonator and the second resonator at an extrema degeneracy point with a nonlinear response to a force applied to the sensor. At least one of the first resonator, the second resonator, or the coupling circuit comprises a variable capacitor having a capacitance that varies as a function of the force. The method comprises injecting an input signal into one of the first resonator or the second resonator, receiving an output signal from one of the first resonator or the second resonator, and determining a magnitude of a force based on a difference between a first frequency extrema point and a second frequency extrema point in the output signal.

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