一种硅差压芯片及内置该硅差压芯片的微差压传感器

    公开(公告)号:CN106840508A

    公开(公告)日:2017-06-13

    申请号:CN201710202854.1

    申请日:2017-03-30

    CPC classification number: G01L19/0618 G01L1/083

    Abstract: 本发明提供一种硅差压芯片及内置该硅差压芯片的微差压传感器,其中硅差压芯片包括下止挡层、上止挡层以及位于下止挡层和上止挡层中间的可移动的测量隔膜,下止挡层和测量薄膜之间及上止挡层和测量薄膜之间均采用硅硅键合连接,上止挡层内侧设置有上止挡层凸起,下止挡层内侧设置有下止挡层凸起,上止挡层凸起与测量隔膜之间设置间隙a,下止挡层凸起与测量薄膜之间设置间隙b。本发明的结构设计在过压情况下能有效地保护硅差压芯片,并且结构和制造工艺简单,介质通道简洁,介质充灌量较少,测量精度较好,成本较低,适合大规模生产。

    Variable range load cell system and method of application
    3.
    发明授权
    Variable range load cell system and method of application 失效
    变量称重传感器系统及其应用方法

    公开(公告)号:US5257549A

    公开(公告)日:1993-11-02

    申请号:US729273

    申请日:1991-07-12

    Applicant: Philip J. Mole

    Inventor: Philip J. Mole

    CPC classification number: G01G3/1406 G01L1/083

    Abstract: A variable load cell arrangement operative for precisely measuring loads over a range beyond the range of a single conventional single low range load cell. The arrangement includes a low range measuring element positioned in a case and having one end adapted to be connected through the case to a load and the opposing end coupled to a fixed reference. A variable pressure means, such as a controllable bellows, is interposed in the case between the load element and an end of the case whereby a predetermined force may be selectively applied to the load measuring element in a direction opposing the load to relieve the strain on the element and permit it to continue to function in an extended range. Electrical circuits, including Wheatstone bridges, are coupled to the load measuring element and provide an electrical output indicative of the applied load and an electrical output that is used to control the variable pressure means.

    Abstract translation: 一种可变称重传感器装置,用于在单个常规单个低范围称重传感器的范围之外的范围内精确测量载荷。 该装置包括定位在壳体中的低范围测量元件,并且其一端适于通过壳体连接到负载,并且相对端耦合到固定基准。 诸如可控的波纹管之类的可变压力装置被插入在负载元件和壳体的端部之间的壳体中,由此可以以与负载相反的方向选择性地将负载测量元件施加预定的力以减轻应变 该元件并允许其在更大范围内继续运行。 包括惠斯通电桥的电路耦合到负载测量元件,并提供指示施加的负载的电输出和用于控制可变压力装置的电输出。

    Force balance transmitter and method of making the same
    4.
    发明授权
    Force balance transmitter and method of making the same 失效
    力平衡发射机和制造方法

    公开(公告)号:US3945257A

    公开(公告)日:1976-03-23

    申请号:US487864

    申请日:1974-07-12

    CPC classification number: G01L1/083 F16J15/50 Y10T74/20582

    Abstract: A force balance transmitter having a substantially flat base plate detachably carrying a primary unit and a secondary unit on an upper substantially flat surface thereof. A bell crank flexure pivot operatively interconnects a primary arm of the primary unit to a secondary arm of the secondary unit.

    Abstract translation: 一种力平衡传动器,其具有可拆卸地承载主单元和基本上平坦表面上的次级单元的基本平坦的基板。 钟形曲柄挠曲枢轴可操作地将主单元的主臂与次级单元的辅助臂相互连接。

    Linkage for moment balancing measuring apparatus
    5.
    发明授权
    Linkage for moment balancing measuring apparatus 失效
    力平衡测量装置的联动

    公开(公告)号:US4388943A

    公开(公告)日:1983-06-21

    申请号:US261242

    申请日:1981-05-06

    Applicant: Juhani Kukkula

    Inventor: Juhani Kukkula

    Abstract: A linkage for use in moment balancing measuring apparatus of the pneumatic type includes first and second pivotally mounted levers, the second lever being adapted to be acted upon by a measuring force and the first lever being adapted to be acted upon by a pneumatic force for balancing the linkage. According to the invention, apparatus are provided for adjustably varying the leverage ratio of the linkage, i.e., the ratio of the pneumatic force to the measuring force according to the particular application to which the linkage is put. The leverage ratio adjusting apparatus includes a rod-like member having one end rotatably attached to one of the levers and first locking means for selectively securing the rod-like member in a particular position corresponding to the particular application to which the linkage is put.

    Abstract translation: 用于气动式力矩平衡测量装置的联动装置包括第一和第二枢转安装的杠杆,第二杆适于通过测量力作用,并且第一杆适于通过用于平衡的气动作用 联动。 根据本发明,提供了一种装置,用于可调节地改变联动装置的杠杆比,即根据连杆所在的具体应用的气动力与测量力之比。 杠杆比调节装置包括杆状构件,其一端可旋转地附接到一个杆和第一锁定装置,用于选择性地将杆状构件固定在对应于连杆所在的特定应用的特定位置。

    Fluidic/pneumatic devices using equilibrium of forces
    6.
    发明授权
    Fluidic/pneumatic devices using equilibrium of forces 失效
    流体/气动装置使用平衡力

    公开(公告)号:US3739798A

    公开(公告)日:1973-06-19

    申请号:US3739798D

    申请日:1971-02-18

    Inventor: DUCOUSSET R

    CPC classification number: F15C3/14 G01L1/083 Y10T137/2409 Y10T137/2452

    Abstract: In the several preferred embodiments of the present invention disclosed herein, a pneumatic controller is provided with a depending flexible vane which is cooperatively arranged and positioned to be moved in relation to a gas-bleed orifice for selectively regulating the pressure of a gaseous control media being supplied to a pressure-responsive control device. To control the movements of the vane, a variable force is applied to the vane to selectively deflect it in response to variations of a measured condition. Proportional feedback is provided in a unique fashion by supplying the regulated gas to one or more nozzles which are arranged to jet gas against the vane for reestablishing the equilibrium of the vane in accordance with the regulated gas pressure.

    Abstract translation: 在本文公开的本发明的几个优选实施例中,气动控制器设置有依赖的柔性叶片,该柔性叶片协同地布置和定位成相对于气体排放孔移动,用于选择性地调节气体控制介质的压力, 提供给压力响应控制装置。 为了控制叶片的运动,响应于测量条件的变化,向叶片施加可变的力以选择性地偏转叶片。 通过将调节的气体供应到一个或多个喷嘴来提供比例反馈,所述喷嘴布置成喷射气体抵靠叶片,以根据调节的气体压力重新建立叶片的平衡。

    Measuring device and measuring method for measuring unbalanced moment of bottom surface of circular valve core

    公开(公告)号:US11703401B2

    公开(公告)日:2023-07-18

    申请号:US17253632

    申请日:2020-05-12

    CPC classification number: G01L1/083 G01M1/14

    Abstract: Provided are a device and a measuring method for measuring an unbalanced moment on a bottom surface of a circular valve core. The device includes a diverging shaped tube, a water tank, a transparent tube, spring dynamometers, laser sources, a circular valve core, and a high-speed camera with a camera stand. Inner shackles and the laser sources are evenly distributed on an outer side of the circular valve core of the device, the spring dynamometers are connected with the inner shackles and with the outer shackles evenly distributed on an inner wall of the transparent tube. The method records an unbalanced state of the circular valve core under an impact of water flow from different orientations with the high-speed camera on the camera stand, the location of the laser point on the outer wall and a tension force of the spring dynamometer are read to calculate a torque of the circular valve core.

    ZERO-STRAIN SOIL PRESSURE SENSOR
    10.
    发明申请

    公开(公告)号:US20180306653A1

    公开(公告)日:2018-10-25

    申请号:US15771386

    申请日:2016-03-30

    CPC classification number: G01L1/083 G01L1/02 G01L1/08 G01N33/24

    Abstract: A zero-strain soil pressure sensor includes a shell provided with a hydraulic oil cavity and a cavity located below the hydraulic oil cavity, a processor, an outer elastic film arranged at the upper end of the hydraulic oil cavity, an inner elastic film arranged between the hydraulic oil cavity and the cavity, an outer strain bridge circuit connected with the outer elastic film, an inner strain bridge circuit connected with the inner elastic film, a piston communicated with the hydraulic oil cavity, and a driving mechanism connected with the piston. The outer strain bridge circuit, the inner strain bridge circuit and the driving mechanism are electrically connected with the processor. The invention has the beneficial effect that the piston is driven by the driving mechanism to control the oil pressure in the hydraulic oil cavity, external soil pressure is balanced through the oil pressure to keep the outer elastic film in an non-deforming state all the time, and only the inner elastic film is deformed, so that the soil arch effect and soil displacement are avoided, and thus the liquid pressure measured by the inner elastic film is the soil pressure, and the measurement result is more accurate.

Patent Agency Ranking