Diameter monitoring system

摘要

A method of monitoring the diameter of an elongated element (10) which is wound upon a winding unit (12). The method comprises as steps: (a) winding a length of an elongated element (10) having a particular diameter on a winding unit (12) with a number of angular rotations; (b) measuring said length; (c) measuring said number of angular rotations; (d) using data processing means (26) that produce from said measured length and from said measured number of angular rotations a signal that is indicative of said particular diameter d.