公开(公告)号：US6118539A

公开(公告)日：2000-09-12

申请号：US470486

申请日：1999-12-22

申请人： Eric Gaumont ,  Michel Clement ,  Ayoub Chakari ,  Patrick Meyrueis

发明人： Eric Gaumont ,  Michel Clement ,  Ayoub Chakari ,  Patrick Meyrueis

IPC分类号： G01B11/16 ,  G01D5/34 ,  G01B11/14

CPC分类号： G01D5/344 ,  G01B11/18

摘要： An optical-fiber polarimetric sensor for measuring the displacement of an object relative to a frame, the sensor comprising a measurement optical fiber secured, over a fraction of its length, both to a central point of the object and to first and second fixed points of the frame, means disposed at one end of the measurement fiber and serving to emit a light beam of determined polarization into said measurement fiber, means for exerting twist on the measurement fiber so as to modify the polarization of the light beam, and means disposed at another end of the measurement fiber and serving firstly to detect the resulting light beam and secondly to determine the displacement of the object by analyzing the polarization modified in this way, wherein said measurement fiber is stripped, over said fraction of its length, of the covering that imparts mechanical strength thereto, and it is slid into a deformable guide sheath fixed both to the rotary object and also to the frame. Preferably, the deformable guide sheath is made of fine steel, and it may lined with a flexible protective sheath.

摘要翻译： 一种用于测量物体相对于框架的位移的光纤偏振传感器，所述传感器包括测量光纤，其测量光纤在其长度的一小部分上被固定到物体的中心点，并且固定到第一和第二固定点 所述框架，设置在所述测量光纤的一端并且用于将确定的偏振光发射到所述测量光纤中的装置，用于在所述测量光纤上施加扭曲以修改所述光束的偏振的装置，以及设置在 测量光纤的另一端，首先用于检测所得到的光束，其次通过分析以这种方式修改的偏振来确定物体的位移，其中所述测量光纤在其长度的所述部分上剥离覆盖物 其赋予机械强度，并且滑动到固定在旋转体上的可变形引导护套和框架。 优选地，可变形引导护套由精细钢制成，并且可以衬有柔性护套。