Patent ID: 9062964
Filing Date: 2015-06-23
Classification: D21F,G01B

Abstract:
1. A system for measuring caliper of paper material, the system comprising: a first laser head that is positioned above a reference that is located along an edge of a roll, the first laser head to project a first incident radiation to the reference and to detect a first reflected radiation from the reference; based on the first reflected radiation, the first laser head to measure a first distance from the first laser head to the reference located along the edge of the roll; a second laser head positioned above the roll, the second laser head to project a second incident radiation onto a top surface of a roll and to detect a second reflected radiation from the top surface of the roll, the first laser head and the second laser head being positioned in an axis parallel to an axis of the reference and the roll; based on the second reflected radiation, the second laser head to measure a second distance from the second laser head to the top surface of the roll; and a control unit to calculate the caliper of the paper material.