APPARATUS FOR MEASURING WIDTH OF PLATE AND MEHTOD THEREOF

摘要

Disclosed are an apparatus to measure a width of a steel sheet, and a method thereof. According to the present invention, the apparatus to measure the width of a steel sheet comprises: a line laser generator to irradiate a plurality of lines to a steel sheet at intervals of a setting distance; a camera part to photograph a plurality of lines irradiated to the steel sheet; an encoder to detect a moving distance of the steel sheet; a storing part to separate and store information on a plurality of lines by each line; and a controlling part to extract information on the plurality of lines with respect to the plurality of lines from the photographed image photographed by operating a camera part whenever the moving distance of the steel sheet inputted from an encoder is moved as much as a setting distance after the line laser generator is operated and storing the information in the storing part, and to calculate a width of the sheet by performing shape compensation and vibration compensation based on information on the plurality of lines stored in the storing part.