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High temperature steel billet motion state multi-rate detection method based on machine vision

A motion state and machine vision technology, applied in the field of measurement control, to achieve the effect of improving measurement accuracy and reliability, good matching, and miniaturization

Active Publication Date: 2014-12-10
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there is still no effective and feasible method for how to use machine vision to automatically collect images and detect the motion state of billets in motion.

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  • High temperature steel billet motion state multi-rate detection method based on machine vision
  • High temperature steel billet motion state multi-rate detection method based on machine vision
  • High temperature steel billet motion state multi-rate detection method based on machine vision

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Embodiment Construction

[0047] In order to describe the present invention more specifically, a vision-based multi-rate detection method for high-temperature steel slab motion states of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0048] Such as figure 1 As shown, a vision-based multi-rate detection method for high-temperature billet motion state includes the following steps:

[0049] Step 1. Each section sets the sampling frequency of the image and the physical size corresponding to the unit pixel of the image through calibration.

[0050] In the current embodiment, an image acquisition system that works in parallel with two threads is constructed, each thread controls a camera to collect images of corresponding sections and calculates them, and each section sets a corresponding sampling frequency f through calibration i And the physical size M corresponding to the unit pixel i .

[0051] Such as figure 2 As sho...

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Abstract

The invention discloses a high temperature steel billet motion state multi-rate detection method based on machine vision. The high temperature steel billet motion state multi-rate detection method based on the machine vision includes the following steps: firstly, building an image collection system in multiple thread concurrent working mode, wherein each thread controls a camera to collect an image of a corresponding work section and calculate, and respective sampling frequency and the physical size corresponding to unit pixels of images are set in each work section through a calibration method; then, collecting the images and extracting feature information of the images according to the set sampling frequency in each work section, and performing motion state calculation in each work section. By using the high temperature steel billet motion state multi-rate detection method based on the machine vision, a detection device is not contacted with an object to be detected, and the problem that a traditional mechanical contact type device difficultly measures a high temperature object is solved.

Description

technical field [0001] The invention relates to the technical field of measurement and control, in particular to a machine vision-based multi-rate detection method for the motion state of a high-temperature billet. Background technique [0002] In the iron and steel industry, the high-intensity hot continuous rolling integrated automatic production mode is widely respected at home and abroad. The high-temperature steel billet from the continuous casting machine directly enters the continuous rolling unit after being warmed and soaked by the online heating equipment. During the transmission process of the high-temperature steel billet, if the phenomenon of steel jamming occurs, it will cause serious consequences (such as the melting of the steel billet, etc.), so it is necessary to detect whether the motion state is still and alarm processing; in addition, in order to realize the heating and rolling For precise control, it is also necessary to detect and control the motion sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P3/38
Inventor 毛维杰陈凯
Owner ZHEJIANG UNIV