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Strip steel surface defect on-line intelligent identification and detection system and detection method

A technology of intelligent identification and detection method, which is applied in the direction of optical defect/defect, image data processing, instrument, etc., can solve the problem of single detection method of strip steel surface defect detection technology, achieve precise classification accuracy, optimize acquisition and imaging technology, the effect of eliminating the interference of imaging

Inactive Publication Date: 2015-09-16
刘强
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problems existing in the prior art, the present invention provides an online intelligent identification and detection method for strip surface defects with real-time detection, precise classification and high accuracy for the technical problems to be solved. The problem of a single detection method in the technology

Method used

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  • Strip steel surface defect on-line intelligent identification and detection system and detection method
  • Strip steel surface defect on-line intelligent identification and detection system and detection method

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Embodiment 1

[0034] figure 1 It is a flow chart of target sample simulation training and defect detection and identification in this embodiment. The online intelligent identification and detection method for steel strip surface defects comprises the following steps,

[0035] Step 101 The light source irradiates the upper and lower surfaces of the steel strip, and the original image of the surface of the steel strip is collected by a high-speed linear array CCD, and the collected original defect image is converted into digital information and then transmitted to the image processor;

[0036] The identification and detection method of this embodiment optimizes the collection and imaging technology of defect images, adopts the image imaging method of high-speed line array camera and linear monochromatic light source, and can collect clear defect images; at the same time, the optical correction function based on statistics can effectively eliminate defects The interference of the external env...

Embodiment 2

[0051] Figure 4 It is a working principle diagram of the online intelligent identification and detection system for steel strip surface defects in this embodiment. The system including the system of this embodiment is divided into four levels: an imaging acquisition system, a detection and identification system, a control service system, and a quality inspection browsing system.

[0052] Among them, the acquisition system includes lighting system, imaging system, mechanical structure and three-proof system. The detection and identification system includes several defect detection computers. The detection and identification system controls the light source, camera control and system status monitoring of the imaging acquisition system. Data collection and transmission. The detection and recognition system detects and recognizes defects through head and tail detection, weld detection, hardware control, defect detection, defect filtering, defect merging, defect classification, d...

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Abstract

The invention provides a strip steel surface defect on-line intelligent identification and detection method. The method comprises image acquisition, feature extraction, multistage defect detection and identification, and result output. The invention also provides a strip steel surface defect on-line intelligent identification and detection system. The system comprises an encoder, a linear LED light source, a high speed linear array CCD camera, an image processor, a detection computer, a server computer, a quality inspection terminal computer and a printer. The detection system and detection method optimize a defect image acquisition and imaging technology, can acquire clear and complete defect images, improve a detect image processing technology, and realize complete and effective extraction of image characteristics. The method utilizes the multistage defect detection and identification method comprising primary defect detection and identification, secondary defect detection and identification and SVM identification, solves the problem that the prior art has a single detection method, is suitable for detection of a plurality of types of strip steel defects and has the advantages of real-time detection, accurate classification and high accuracy.

Description

technical field [0001] The invention relates to an online detection technology for surface quality information of a cold-rolled steel plate, in particular to an online intelligent identification and detection system and a detection method for surface defects of a strip steel. Background technique [0002] my country is a big country of steel production. Strip steel has become an indispensable raw material for automobile production, machinery manufacturing, chemical industry, aerospace, shipbuilding and other industries due to its wide range of applications. play a decisive role. The strip steel preparation process is divided into cold-rolled strip steel process and hot-rolled strip steel process. Among them, the cold-rolled strip steel process includes: pickling, rolling, annealing, synchronous lubrication of the rolled size, anti-rust oil, leveling and sizing, polishing and packaging; the hot-rolled strip steel process includes: heating furnace, dephosphorization machine, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/89G06T7/00
Inventor 刘强
Owner 刘强
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