| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To detect defects such as an edge wave, an edge cut or a hole on the edge part of a metal band successively with high accuracy. <P>SOLUTION: A one-dimensional image sensor extending in the width direction is arranged on the edge part surface of the conveyed metal band, and a waveform sinal at every fixed time of the image sensor is accumulated in a memory of a shape determination device and compared successively with a prescribed stationary waveform, to thereby detect a shape failure of the edge part of the metal band. The one-dimensional image sensor is constituted of a light projecting part for projecting light to the metal band, and a light receiving part installed on the opposite side of the projecting part across the metal band, and a waveform sinal is formed corresponding to the one-dimensional light quantity extending in the width direction including the edge part sensed by a light receiving element of the light receiving part. <P>COPYRIGHT: (C)2004,JPO&NCIPI</p> |
