Strip steel surface on-line inspection system and method based on embedded image processing system

Abstract

The invention provides a strip steel surface on-line inspection system and method based on an embedded image processing system. The inspection system mainly comprises an encoder (1) installed on an S roller, a fixed frame (10) located above and below a transmission strip steel be detected, a linear LED light source (2) mounted on the fixed frame, a linear array CCD camera (3), an embedded image processing system connected to the encoder and the CCD camera through Gigabit Ethernet, a server (5) connected to the embedded image processing system (4) through a switchboard (7), a storage (6) and a display (8). The invention uses a small amount of equipment and devices, and a bus mode to ensure real-time and accurate data acquisition of surface quality information of a cold-rolled strip steel, saves a large amount of system resources, and has the advantages of simple structure and convenient maintenance. Besides, the invention solves the problem of low running speed of a PC based pure software detection method and the problems of complex system and high cost of multiple DSP parallel processing of data.

Description

technical field [0001] The invention relates to an online detection technology for surface quality information of cold-rolled steel sheets, in particular to an online detection system and method for surface quality of cold-rolled steel sheets based on an embedded image processing system. Background technique [0002] my country is a big country of steel production. At present, the main line of steel products, such as automobile plates and stainless steel decorative plates, etc., the surface quality plays a decisive role in its overall quality and even market competitiveness. At present, the detection of surface quality defects of cold-rolled steel sheets mostly adopts the method of manual visual inspection, or pure electromechanical technology or optical technology detection methods. The manual detection method has the disadvantages of small detection effective speed range, low visual sensitivity, and being affected by human body functions, while inspection methods based on ...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a strip steel surface online detection system and method based on an embedded image processing system, which uses the means of combining machine vision and embedded digital information processing to collect surface defect information of high-speed cold-rolled strip steel, and solve the problem of The running speed of the PC-based pure software detection method is relatively slow, and the machine vision-based cold-rolled strip surface defect collection method has problems such as complex systems, many types of equipment, and high system resource consumption; The combination of detection system can effectively and accurately locate defect information and analyze the type of defect, which meets the real-time collection and identification of strip surface defect information under the high-speed movement of cold-rolled strip steel

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