公开(公告)号：US20020166970A1

公开(公告)日：2002-11-14

申请号：US10142446

申请日：2002-05-10

申请人： METSO PAPER AUTOMATION OY

发明人： Antti Komulainen ,  Kari Juppi ,  Pertti Aimonen

IPC分类号： G01J005/02

CPC分类号： D21G9/0027 ,  D21G9/0036 ,  G01N21/8922 ,  G01N25/72 ,  G01N33/346

摘要： The invention relates to a method in the process of manufacturing and/or finishing a fibre web (11), in which method said continuous and moving web (11), and/or a moving means (16, 17) related to the processing of the web (11), is monitored by one or more thermal cameras (10) of the infrared range or a corresponding detector/detectors for the purpose of controlling the quality or condition. According to the invention, a substantially continuous two-dimensional thermal image or continuous thermal chart (20) of an object (11, 16, 17) being monitored and in a propagating and/or rotating movement is formed by said detector/detectors in a time-resolved manner and in synchronization with the movement of the object (11, 16, 17) in the direction of the movement. To determine the properties of the object (11, 16, 17) and/or to detect defects in the object from the continuous thermal chart (20), local deviations and/or discontinuities (21, 22) in the temperature, particularly in the direction of movement, are detected, and the cause of said deviations and/or discontinuities (21, 22) is identified on the basis of the periodicity of said phenomena in the direction of movement.

摘要翻译： 本发明涉及在纤维网（11）的制造和/或整理过程中的一种方法，其中所述连续和移动的网（11）和/或移动装置（16,17）涉及处理 网络（11）由红外范围的一个或多个热摄像机（10）或相应的检测器/检测器监视，以控制质量或状况。 根据本发明，被监视并且在传播和/或旋转运动中的物体（11,16,17）的基本连续的二维热图或连续热图（20）由所述检测器/检测器形成 并且与物体（11,16,17）在运动方向上的运动同步地进行。 为了确定对象（11,16,17）的属性和/或从连续热图（20）中检测物体中的缺陷，温度的局部偏差和/或不连续（21,22），特别是在 检测出运动方向，并且基于运动方向上的所述现象的周期性来识别所述偏差和/或不连续性（21,22）的原因。