Method for monitoring deviation of steel belt in annealing furnace

Abstract

The invention relates to the field of deviation of steel belts in annealing furnaces, in particular to a method for monitoring deviation of a steel belt in an annealing furnace. A system for monitoring deviation of the steel belt in the annealing furnace comprises a camera, a monitor, a deviation control server, a multi-path video converter, an alarm and an input apparatus. The method for monitoring deviation of the steel belt in the annealing furnace comprises the following steps of: (1) setting a criterion of deviation of the steel belt; (2) acquiring image data; (3) converting RGB (Red, Green and Blue) image data into gray level image data; (4) processing the gray level image data, extracting the edge of the steel belt, and obtaining the profile of the steel belt; (5) selecting a template, and obtaining the position of the edge of the inner steel belt in the image through template matching positioning; and (6) judging whether to give an alarm. Through interception of in-furnace steel belt running ITV image data, the system effectively achieves a steel belt deviation image recognition function, can give an alarm in time when the steel belt deviates, and provides the basis for post hoc analysis on the reason of deviation of the in-furnace steel belt.

Description

technical field [0001] The invention relates to the field of deviation of a steel strip in an annealing furnace, in particular to a method for monitoring the deviation of a steel strip in an annealing furnace Background technique [0002] After the cold-rolled steel strip is rolled, it must be annealed at high temperature to meet the user's stamping use. The annealed steel strip runs at high temperature and high speed in a sealed annealing furnace due to its many specifications and large jump changes. It is very easy to cause the steel strip to deviate from the center line of the unit on the furnace rolls, resulting in rubbing and breaking of the strip. Each time the steel strip in the furnace is broken, the average downtime is 30 hours, which brings great difficulties to the production organization and huge economic losses. Therefore, it is necessary to detect the deviation of the steel strip in time, to provide help for timely adjustment of the parameters of the annealing...

AI Technical Summary

Problems solved by technology

[0004] In order to monitor the operation of the steel strip in the annealing furnace, industrial TV ITV is installed on the continuous annealing production line at present to monitor the operation of the steel strip in various parts of the annealing furnace, but this monitoring is real-time and must be passed through the human eyes of the operator Carry out monitoring and judge the deviation of the steel belt before taking corresponding measures, and the deviation situation at that time cannot be reproduced. For example, the steel belt deviation accident occurred in the middle shift, night shift and rest day, and the technicians could not accurately know the deviation process at that time. Steel belt deviation accident brings great difficulties

There are still the following disadvantages in this method of detecting steel strip deviation by human eyes: because human eyes are prone to fatigue, long-term inspections cannot be performed, and only random inspections can be performed; the production speed of steel strips in the furnace is increased, and it is difficult for personnel to observe details; Accurate and timely steel belt deviation correction; unable to conduct accurate post-event failure analysis; unable to complete the filing of steel belt production history in the furnace

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