DEVICE FOR IMPROVED RESPONSE WHEN MEASURING VIBRATION FREQUENCY OF A VIBRATING OBJECT
    1.
    发明公开
    DEVICE FOR IMPROVED RESPONSE WHEN MEASURING VIBRATION FREQUENCY OF A VIBRATING OBJECT 审中-公开
    设备以改善响应测量时一个充满活力点的振动频率

    公开(公告)号:EP2243006A1

    公开(公告)日:2010-10-27

    申请号:EP08872448.9

    申请日:2008-12-03

    申请人: Sondero AB

    发明人: TYREN, Carl

    IPC分类号: G01H9/00 G01L1/10

    摘要: A device for measuring a vibration frequency of a mechanically vibrating string (11) or rod (41), comprising a microwave transmitter (14) for directing microwaves towards the vibrating string and a microwave receiver (17) for receiving the microwaves amplitude modulated by the frequency of mechanical vibration. A member (18) is arranged close to a vibration maximum of the vibrating string. The member is arranged on one side of the vibrating object and the microwave receiver is arranged on the other side thereof. The device is used for measuring temperature, pressure, torque, force or identity.

    METHOD AND APPARATUS FOR SENSING A MEASURAND
    2.
    发明授权
    METHOD AND APPARATUS FOR SENSING A MEASURAND 失效
    感测测量的方法和装置

    公开(公告)号:EP0229822B1

    公开(公告)日:1993-03-10

    申请号:EP86904503.9

    申请日:1986-06-05

    IPC分类号: G01D5/26

    摘要: Vibrating resonant mechanical structures are excited optically by photokinetic energy transfer and detected optically. In particular, a tuning fork sensor measuring a physical parameter is excited into oscillation by radiant energy and the frequency of vibration is detected by radiant energy which may be communicated via an optical fiber. These vibrations are communicated via a fiber optic to a detection location.

    METHOD AND APPARATUS FOR SENSING A MEASURAND
    5.
    发明公开
    METHOD AND APPARATUS FOR SENSING A MEASURAND 失效
    方法和装置确定测量。

    公开(公告)号:EP0229822A1

    公开(公告)日:1987-07-29

    申请号:EP86904503.0

    申请日:1986-06-05

    IPC分类号: G01D G01D5 G01D21 G01L9 G10K15

    摘要: Des structures mécaniques résonantes vibratoires sont excitées optiquement par transfert d'énergie photocinétique et sont détectées optiquement. En particulier, un capteur à fourche de syntonisation mesurant un paramètre physique est excité de manière oscillatoire par une énergie radiante et la fréquence des vibrations est détectée par l'énergie radiante qui peut être communiquée via une fibre optique. Ces vibrations sont communiquées à un point de détection via une fibre optique.

    IMPROVED FIBER OPTIC REMOTE SENSOR
    6.
    发明公开
    IMPROVED FIBER OPTIC REMOTE SENSOR 失效
    与光纤,遥测改进的传感器。

    公开(公告)号:EP0181397A1

    公开(公告)日:1986-05-21

    申请号:EP85903458.0

    申请日:1985-05-03

    IPC分类号: G01D5 G01K1 G01K7 G01K11 G01L1 G01L9

    摘要: Détecteur résonnant entraîné optiquement et à oscillation électromagnétique soumis à une force de tension, où l'énergie motrice optique et le signal communiqué optiquement produit en réponse à la force de tension sont tous les deux transmis à une distance considérable le long d'une seule fibre optique (14). Une partie de l'énergie d'alimentation (19) entraîne le mécanisme oscillatoire (20), et une autre partie est réfléchie vers un détecteur de fréquence (18) par l'action d'obturation de l'élément résonnant. Le dispositif peut être conçu de façon à être entraîné électriquement et détecté optiquement, entraîné optiquement et détecté électriquement, ou aussi bien entraîné que détecté optiquement ou électriquement, pour atteindre une versalité rétrospective maximale dans des systèmes de commande de processsus passés, présents et à venir.

    Resonator device
    7.
    发明公开
    Resonator device 失效
    Resonatorvorrichtung。

    公开(公告)号:EP0244086A2

    公开(公告)日:1987-11-04

    申请号:EP87302706.4

    申请日:1987-03-30

    申请人: STC PLC

    IPC分类号: G01L1/10 G01L1/16 G01L7/02

    摘要: A strain or pressure responsive transducer comprises a pair of elongate beam resonators arranged end to end and provided with a flexible coupling therebetween. The arrangement oscillates e.g. in a double see-saw or butterfly mode. The transducer is disposed on a diaphragm whereby strain may be transmitted to the oscillatory system. The frequency of oscillation is a function of this strain.

    摘要翻译: 应变或压力响应换能器包括一对细长的束谐振器,它们端对端布置并且在它们之间设置有柔性耦合。 该装置例如振荡。 在双锯或蝴蝶模式。 换能器设置在隔膜上,因此应变可以传递到振荡系统。 振荡的频率是该应变的函数。

    Pressure-to-frequency transducer
    8.
    发明公开
    Pressure-to-frequency transducer 失效
    压力到频率传感器

    公开(公告)号:EP0087612A3

    公开(公告)日:1984-04-11

    申请号:EP83101080

    申请日:1983-02-04

    IPC分类号: G01L07/00 G01L11/00

    摘要: A vibratable element whose resonant frequency changes in accordance with an external source of variable applied pressure, has an inner cavity in fluid communication with the source of applied pressure, so that variations therein produce corresponding changes in the internal pressure of the cavity. Increases in this internal pressure cause the flexible walls surrounding the cavity to expand outwardly, thereby increasing the mechanical stiffness of the element. The increased stiffness produces a corresponding increase in the resonant frequency. Conversely, a decrease in pressure allows the walls to slacken and reduce the overall stiffness of the element. A linear relationship exists between changes in applied pressure and changes in the resonant frequency, over an appreciable range of pressures. An optical scheme detects the frequency, and conventional electronics correlate the frequency to the corresponding pressure, or to another physical variable represented by the applied pressure.

    摘要翻译: 谐振频率根据可变施加压力的外部源变化的可振动元件具有与施加的压力源流体连通的内腔,使得其中的变化产生腔的内部压力的相应变化。 该内部压力的增加导致围绕空腔的柔性壁向外扩张,从而增加元件的机械刚度。 增加的刚度产生谐振频率的相应增加。 相反,压力的降低允许壁松弛并降低元件的总体刚度。 施加压力的变化和共振频率的变化之间存在线性关系,超过可观的压力范围。 光学方案检测频率,常规电子设备将频率与相应的压力相关联,或与由施加的压力表示的另一物理变量相关联。

    Measuring instrument using a pneumatically driven resonant element
    9.
    发明公开

    公开(公告)号:EP0091725A2

    公开(公告)日:1983-10-19

    申请号:EP83300845.1

    申请日:1983-02-18

    发明人: Bodge, Philip K.

    CPC分类号: G01L9/0013 G01L9/0014

    摘要: The problem of providing a process control instrument employing a vibratable string (41) that is safe in explosive environments is solved by using a continuous gas stream or series of gas impulses through a port (59), such as a jet nozzle, to impinge on the string which has its tension and therefore its resonant frequency determined by a process parameter as sensed, for example by pressure in a bellows (25). Variations in the alignment between the port and string produce different modes of vibration, one being particularly suitable for process measurement. In one example, an optical sensor provides an intrinsically safe instrument for measuring the frequency of vibration.

    摘要翻译: 提供使用在爆炸性环境中安全的可振动串(41)的过程控制仪器的问题通过使用连续气流或一系列气体脉冲通过诸如喷嘴的端口(59)来冲击 该弦具有其张力并因此其谐振频率由所检测到的过程参数确定,例如通过波纹管(25)中的压力。 端口和串之间的对准变化产生不同的振动模式,特别适用于过程测量。 在一个示例中,光学传感器提供用于测量振动频率的本质安全的仪器。