| 摘要 |
<p>A process for sensing the level of movement comprises passing 7 light through an optical fibre 6, allowing or causing the movement to be sensed to produce microbends in the fibre, and sensing 12 the light level after the microbends have been produced. The fibre may be sandwiched between fixed and movable intermeshing sets of rounded projections 9, 10. The source 7 and detector 12 may instead be at the same end of the fibre, the other end of the fibre being associated with a reflector. One set of the projections 9, 10 may be fixed to a diaphragm adapted to sense gas pressure. <IMAGE></p> |
