公开(公告)号：WO1995010022A1

公开(公告)日：1995-04-13

申请号：PCT/US1994009681

申请日：1994-08-26

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  GHAEM, Sanjar ,  GERBETZ, Kenneth, S. ,  XUE, Jie

IPC: G01B11/00

CPC classification number: G01D5/347

Abstract: A device and method for sensing linear displacements between a first member (101) and a second member (102) on a same axis (108). The second member (102) substantially encompasses the first member (101). To sense the linear displacements, an optical code pattern (103) is placed on the first member (101) and an encircling optical sensor (104) is placed on the second member (102). The encircling optical sensor (104) includes light transmitting (106) and receiving (107) paths that transmit and receive light to/from the optical code pattern (103). The light received from the optical code pattern (103) is sent to a displacement calculation device (105) that determines the linear displacement of the first member (101) with respect to the second member (102). Using this technique, linear displacements of the first member (101) with respect to the second member (102) can be accurately measured in high temperature environments without adversely affecting electrical components associated with the displacement calculation device (105).

Abstract translation: 一种用于感测同一轴线（108）上的第一构件（101）和第二构件（102）之间的线性位移的装置和方法。 第二构件（102）基本上包围第一构件（101）。 为了感测线性位移，光学代码图案（103）被放置在第一构件（101）上，并且环绕的光学传感器（104）被放置在第二构件（102）上。 环绕的光学传感器（104）包括向/从光学代码图案（103）发送和接收光的光发射（106）和接收（107）路径。 从光码图案（103）接收的光被发送到确定第一部件（101）相对于第二部件（102）的线性位移的位移计算装置（105）。 使用这种技术，可以在高温环境中精确地测量第一构件（101）相对于第二构件（102）的线性位移，而不会不利地影响与位移计算装置（105）相关联的电气部件。