Yarn travelling information acquiring device, yarn processing device, and yarn information acquiring method

摘要

A yarn travelling information acquiring device includes a first yarn unevenness detecting sensor (43) adapted to detect a thickness unevenness of a travelling yarn and to output first yarn thickness unevenness signals; a second yarn unevenness detecting sensor (44) adapted to detect the thickness unevenness of the yarn and to output second yarn thickness unevenness signals; a similarity degree evaluating section (65) adapted to use a first imaginary frame and a second imaginary frame to select a plurality of positions of the first imaginary frame on a time axis of the second imaginary frame within a second time range, and to evaluate a plurality of similarity degrees of the first yarn thickness unevenness signals and the second yarn thickness unevenness signals,; and a travelling information acquiring section (67) adapted to acquire travelling information of the yarn in accordance with the similarity degree. [Most Illustrative Drawing] FIG. 3