KRAFTMESSZELLE
    91.
    发明授权

    公开(公告)号:EP1044356B1

    公开(公告)日:2004-12-22

    申请号:EP99945826.8

    申请日:1999-10-04

    Applicant: Digisens AG

    CPC classification number: G01G3/165 G01L1/10 G01L1/106 G01L5/0004

    Abstract: The inventive force measuring cell consists of a plate (2) which is provided with a circular hole (2), the axis of which is perpendicular to the surface of said plate (2) and to the direction of the force that is to be measured. Said axis also lies within the neutral surface of the plate (2). The plate (2) can also be the web of a carrier. A measuring transducer (12) is inserted into the hole (3) in order to measure any modification of the size of the diameter of said hole (3) on a plane that is inclined at an angle of 45 DEG counter to the direction of the force (F) to be measured. A lateral force is created in the direction of y in addition to a transverse stress tau with a component tau xy by applying force in the direction of y when at least one side of the plate (2) is clamped in the base. The originally circular hole (3) is deformed into an ellipse. The measuring transducer (12) consists of a measuring transformer with an oscillating string.

    Abstract translation: 本发明的测力单元由一个板(2)组成,该板具有一个圆孔(2),该圆孔的轴线垂直于所述板(2)的表面并且与要测量的力的方向 。 所述轴线也位于板(2)的中性表面内。 板(2)也可以是载体的网。 将测量变换器(12)插入孔(3)中,以测量在与所述孔(3)的方向相反倾斜45°的平面上的所述孔(3)的直径的尺寸的任何变化 力(F)被测量。 当板(2)的至少一侧被夹持在底座中时,通过沿y方向施加力,沿着y方向产生横向应力tau和tau分量的横向力。 原来的圆形孔(3)变形为椭圆形。 测量传感器(12)由带有振荡弦线的测量变压器组成。

    VIBRATING STRIP TRANSDUCER
    92.
    发明授权
    VIBRATING STRIP TRANSDUCER 失效
    VIBRANT条形变压器。

    公开(公告)号:EP0437476B1

    公开(公告)日:1994-05-04

    申请号:EP89911184.3

    申请日:1989-09-27

    Abstract: A vibrating strip transducer, wherein a vibrating strip (54) mounted between a fixed mount (52) and a moveable mount (51) and under load (53) directly responds to a change in force applied to the strip with a change in the magnitude of stress in the strip. The change in stress produces a corresponding change in the resonant frequency of vibrating strip (54) which is detected by coil assembly (55) to output a frequency based signal directly related to the force applied. Fluid level and buoyancy sensing embodiments are also disclosed.

    Messzelle
    93.
    发明公开
    Messzelle 失效
    Messzelle。

    公开(公告)号:EP0513481A1

    公开(公告)日:1992-11-19

    申请号:EP92102784.3

    申请日:1992-02-20

    Inventor: Meier, Eugen

    CPC classification number: G01G3/16 G01L1/10

    Abstract: Es wird eine Messzelle fuer ein Kraftmessgeraet, insbesondere fuer eine Waage, mit einem Kraftmesswandler und einem in diesem angeordneten, schwingfaehigen System, vorzugsweise einer Saite, mit Knotenmassen, angegeben, bei dem wenigstens ein Daempferelement 2 auf oder in einer Hauptmasse, beispielsweise einer der Knotenmassen 1 und / oder auf oder in wenigstens einer der Einspanneinrichtungen E der Saite angeordnet ist. Insbesondere kann das Daempferelement 2 die Form eines Prallelementes 2.5.2, 2.6.2, 2.7.2, 2.9.1 oder die Form eines Koppelschwingelementes 2.2.1, 2.2.2; 2.3; 2.4.1, 2.4.2; 2.8.1, 2.8.2, 2.8.3 aufweisen.

    Abstract translation: 所指出的是用于力测量装置的测量单元,特别是用于平衡的测量单元,其具有力测量传感器和布置在其中的具有节点质量的振动系统,优选地是串,其中至少一个阻尼元件 2布置在主质量块上,或者在主质量块中,例如节点质量块1中的一个和/或用于弦的夹紧装置E中的至少一个中。 特别地,阻尼元件2可以具有挡板元件2.5.2,2.6.2,2.7.2,2.9.1或耦合振动元件2.2.1,2.2.2的形式; 2.3; 2.4.1,2.4.2; 2.8.1,2.8.2,2.8.3。

    Vibration type force detector
    95.
    发明公开
    Vibration type force detector 失效
    Kraftwandler mit schwingender Saite。

    公开(公告)号:EP0361473A2

    公开(公告)日:1990-04-04

    申请号:EP89117951.7

    申请日:1989-09-28

    Inventor: Komoto, Akira

    CPC classification number: G01L1/10 Y10S73/01

    Abstract: A vibration type force detector comprising: a string to which a force to be measured is applied in the direction in which said string is tensioned; a driver for causing said string to vibrate at its natural frequency and simultaneously producing a series of pulses at a frequency in synchronism with the vibration of said string; a gate to which said series of pulses are applied; a counter for counting said series of pulses that have passed through said gate; means for providing a gating time determined in accordance with the result of the counting of said counter; and a controller for controlling said gate in accordance with said gating time. Said gating time providing means is so arranged that as the vibration frequency of said string increases, said gating time lengthens.

    Abstract translation: 一种振动型力检测器,包括:在所述弦被张紧的方向上施加测量力的弦; 用于使所述弦以其固有频率振动的驱动器,并同时产生与所述弦的振动同步的频率的一系列脉冲; 施加所述一系列脉冲的栅极; 用于计数已经通过所述门的所述一系列脉冲的计数器; 用于提供根据所述计数器的计数结果确定的选通时间的装置; 以及控制器,用于根据所述门控时间控制所述门。 所述选通时间提供装置被布置成随着所述弦的振动频率增加,所述选通时间延长。

    荷重センサ
    97.
    发明专利
    荷重センサ 审中-公开
    载荷传感器

    公开(公告)号:JPWO2013132842A1

    公开(公告)日:2015-07-30

    申请号:JP2014503488

    申请日:2013-03-06

    CPC classification number: G01L1/10 G01H1/003 G01L1/106 G01L5/00

    Abstract: 荷重センサは、振動子と、振動子に設けられた駆動電極と、振動子を振動させる駆動電圧を駆動電極に供給する駆動回路と、振動子の振動に応じた電流を出力する検出電極と、検出電極から出力される電流を電圧に変換するIV変換器とを備える。駆動回路は、駆動電圧を出力するオペアンプと、そのオペアンプに接続された抵抗とを有して小さい内部抵抗を有する。IV変換器は、電流が入力されてかつ仮想接地された反転入力端子を有して負帰還回路を構成する。この荷重センサでは、周囲の温度が変動しても出力信号の精度が安定している。

    Abstract translation: 负载传感器包括换能器,设置在振子的驱动电极,用于振动振动器,其输出的电流对应于振动器的振动检测电极提供驱动电压到所述驱动电极的驱动电路, 和IV转换器,用于从所述检测电极输出的电流转换为电压。 驱动电路具有较小的内阻具有用于输出驱动电压,电阻器和连接到所述运算放大器的运算放大器。 IV转换器构成具有一个反相输入端,其当前正在被输入和虚拟地面的负反馈电路。 该负载传感器,即使环境温度变化的输出信号的精度是稳定的。

    Pressure sensor
    98.
    发明专利
    Pressure sensor 有权
    压力传感器

    公开(公告)号:JP2013234853A

    公开(公告)日:2013-11-21

    申请号:JP2012105306

    申请日:2012-05-02

    Abstract: PROBLEM TO BE SOLVED: To accurately detect very small pressure fluctuation, to set the lower limit frequency of the pressure fluctuation to a desired value, and to optionally set the frequency band of the detectable pressure fluctuation.SOLUTION: A pressure sensor for detecting the pressure fluctuation of a predetermined frequency band includes a sensor body 3 having a cavity 10 formed therein, a cantilever 4 disposed inside a communication opening 11 in the state of being supported in cantilever in the sensor body and distorted to be deformed according to a pressure difference between the inside and the outside of the cavity, a displacement measuring part for measuring displacement of the cantilever. A gap 13 is formed between the outer peripheral edge of the cantilever and the opening end of the communication opening, and a lower limit frequency f(Hz) in the frequency band is set by the following expression (1): [f>k (G/V). [k is proportional constant, G is a gap width (μm), and V is cavity volume (ml).]

    Abstract translation: 要解决的问题:为了准确地检测非常小的压力波动,将压力波动的下限频率设定为期望值,并且可选地设定可检测压力波动的频带。解决方案:用于检测压力的压力传感器 预定频带的波动包括其中形成有空腔10的传感器主体3,悬置在布置在连通开口11内的悬臂4,该悬臂4在传感器主体中悬臂支撑的状态下,根据压力差而变形 空腔的内部和外部,用于测量悬臂的位移的位移测量部分。 在悬臂的外周边缘和通信开口的开口端之间形成间隙13,并且通过以下表达式(1)设定频带中的下限频率f(Hz):[f> k( G / V)。 [k是比例常数,G是间隙宽度(μm),V是腔体积(ml)]。

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