OPTICAL DISPLACEMENT SENSOR.
    5.
    发明公开
    OPTICAL DISPLACEMENT SENSOR. 失效
    光学传感器位移。

    公开(公告)号:EP0639260A4

    公开(公告)日:1998-12-09

    申请号:EP93911687

    申请日:1993-05-05

    申请人: UNIV QUEENSLAND

    摘要: An optical displacement sensor (10) comprises a flexible tube (13) having a reflective internal surface. One end of the tube (13) is connected to a light source (14) via a solid optical fibre (11). The other end of the tube (13) is connected to a light detector (15) via another optical fiber (12). Light from source (14) passes through the tube (13) and is detected by detector (15). The tube (13) is connected to a measurand such that displacement of the mesurand causes deformation of the tube (13), and such deformation is detected by variation in the intensity of light transmitted through the tube (13). The sensor is also able to detect changes in pressure to which the tube (13) is subjected. In a modified form, both the light source and detector are located at the same end of the tube, and light passing through the tube is reflected from the other end back to the detector.