Medium plate surface plate shape measuring system and method

Abstract

The invention provides a medium plate surface plate shape measuring system and method. The system comprises an image acquisition unit, an image identification unit, an image processing unit and an image computing unit, wherein the image acquisition unit is used for collecting a steel plate image through a linear array camera; the image identification unit is connected with the image acquisition unit and used for identifying the coordinates of the steel plate region in the steel plate image; the image processing unit is connected with the image processing unit, and is used for fitting the coordinates of the steel plate regions in a plurality of steel plate images, so as to obtain a steel plate curve; the image computing unit is connected with the image processing unit, and is used for calculating the yield points of the steel plate curve. According to the medium plate surface plate shape measuring method and system, provided by the invention, a laser line source and a linear array CCD camera are adopted, not only can the function that a common width gauge measures the real-time width of a steel plate be achieved, but also the outline shape of the steel plate can be measured and characteristic yield points on the outline of the steel plate can be given, the lengths of the head and the tail of the steel plate can detected, and visual and reliable data can be provided for shearing optimization.

Description

technical field [0001] The invention relates to the technical field of machine vision, in particular to a flat shape measurement system and method for medium and thick plates. Background technique [0002] In order to reduce material waste and improve the yield of medium and thick plates, advanced steel companies in the world have generally adopted online automatic detection technology to detect the width and length of steel plates to determine the optimal shearing plan and achieve optimal shearing. [0003] Optimal shearing consists of two steps: first, use the plate shape measurement system to detect the precise coordinates of the planar outline of the steel plate to obtain the shape and size of the steel plate; then, the optimal shearing system calculates the best cutting plan based on the specific conditions of the steel plate shape above, Determine the position of the cutting line, and transmit the optimization result to the cutting operation system. [0004] At presen...

AI Technical Summary

Problems solved by technology

Therefore, domestic steel mills use foreign shapers to detect the profile of medium and thick plates, and foreign shapers also include many other functions such as flatness detection, which makes the overall equipment very expensive, resulting in only a few high-end medium and thick plates in China. The plate factory has the ability to adopt the optimized shearing technology, which makes the domestic application market of this technology very small. Therefore, in order to reduce the capital threshold for steel mills to use the optimized shearing technology, a plate shape specially used for medium and thick plates before shearing is developed. measurement system is necessary

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