AUTOMATIC HIGH-SPEED MEASURING DEVICE FOR MOVING OBJECT

PROBLEM TO BE SOLVED: To prevent damaging an object by controlling the object passing in line and realizing accuracy and high speed in counting the object existing in a medium with flow and measuring the shape. SOLUTION: Optical fiber sensors are arranged in succession, pulses or modulated waves are transmitted and received in turn to them, and the size of the object are made variable according to the intervals. Since a measuring area distributes in spiral in accordance with the movement of the medium, a spiral effect is produced. Thus, not only sensing the object, but accurately measuring the object moving extremely at high speed or low speed reverse to the flow is made possible. COPYRIGHT: (C)2004,JPO