METHOD AND DEVICE FOR MEASURING OUTER DIAMETER OF SECTIONAL BODY

摘要

PURPOSE: To accurately measure the outer diameter of a sectional body such as a power cable without any contact and by assuring insulation performance. CONSTITUTION: The shade of a sectional body 10 be measured and that of a sample sectional body whose outer diameter is recognized in advance are captured and output as the change in each amount of received light by light receivers 13 and 23 corresponding to projectors 12 and 22 within the area of parallel beams 25 and 26 emitted from a plurality of projectors 12 and 22 and the amount of compensation for the size of the outer diameter of the sectional body is obtained according to each output for the shape of the sample sectional body 10 by a CPU 27. Output is compensated based on each output for the shape of the sectional body 10 to be measured and a compensation value and the outer diameter of the sectional body 10 to be measured is detected based on the compensated output.