APPARATUS FOR DETECTING END PORTION POSITION OF STRIP-LIKE BODY, AND METHOD FOR DETECTING END PORTION POSITION OF STRIP-LIKE BODY

摘要

This apparatus for detecting an end portion position of a strip-like body obtains positions of both the ends of a travelling strip-like body, said ends being in the width direction of the strip-like body, and heights of both the ends of the strip-like body. An end portion position detecting apparatus (100) is composed of: a first light source (110), which radiates light to a strip-like body (2000) from below the strip-like body; a second light source (120), which radiates linear light in the vertical direction to the surface of the strip-like body from above the strip-like body; an image pickup apparatus (130), which picks up an image of a surface of the strip-like body; and an end portion position calculating apparatus (140), which calculates positions of strip-like body end portions in the width direction of the strip-like body, and positions of the strip-like body end portions in the height direction of the strip-like body on the basis of an image obtained by means of the light emitted from the first light source (110), and an image obtained by means of reflected light from the second light source (120).