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An online detection method and device for metal wire production

A metal wire, non-destructive testing technology, applied in the direction of optical testing flaws/defects, etc., can solve problems such as limitations, and achieve the effect of improving product quality

Inactive Publication Date: 2015-10-28
INST OF AUTOMATION CHINESE ACAD OF SCI
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Problems solved by technology

This approach limits the full use of the excellent performance of the GPU (Graphics Processing Unit) in scientific fields

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  • An online detection method and device for metal wire production
  • An online detection method and device for metal wire production
  • An online detection method and device for metal wire production

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0019] The invention provides an online non-destructive testing system for metal wire production and a non-destructive testing method for metal wire production. The system includes a light source, a constant current controller, a CCD camera, and a computer. The basic steps included in the method are: recording one-dimensional light intensity data, splicing into two-dimensional images, transferring to GPU, dark current elimination, gain adjustment, metal wire area segmentation, defect detection, dumping to computer internal memory, feature Extract, pattern recognize and output the result. The invention solves the defects of other methods such as low detection accuracy, long feedback cycle, offline spot check, and low effi...

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Abstract

The invention discloses an online detection system for metal wire production. The online detection system comprises a light source, a constant-current controller, a CCD (Charge Coupled Device) camera and a computer, wherein the light source is an annular LED (Light Emitting Diode) light source and is sleeved outside a metal wire, a light illumination angle is parallel with the running direction of the metal wire to be detected, a defect is remarkably shown through small-angle large-lumen illuminating of the metal wire to be detected, the light source is connected with the constant-current controller, the brightness of the light source is controlled by the constant-current controller, and the constant-current controller is arranged on the edge of the light source, is connected with the light source, id used for controlling and stabilizing the brightness through controlling a current, id also connected with the computer to receive a brightness control command of the computer. Based on an optical technology, GPU (Graphics Processing Unit) calculation and an image processing algorithm, the online detection system overcomes the defects of low detection precision, long feedback period, offline random inspection, low efficiency and the like in other methods and can meet the demands of metal wire manufactures can be met.

Description

technical field [0001] The invention belongs to the technical field of machine vision, and in particular relates to an on-line detection method and device for metal wire production. Background technique [0002] As a major product in metal wires, electrical flat wires are widely used in the manufacture of motors, electrical equipment windings, installation of power distribution equipment and other projects. The main materials are non-ferrous metals with low resistivity such as copper and aluminum. Generally, the surface brightness is required to be relatively high. high. Due to raw materials, production equipment, production technology and other reasons, defects such as air bubbles, oxide scales, and scratches often appear on the surface of the wire rod, which reduces the performance of the product such as corrosion resistance, wear resistance, and fatigue limit. [0003] The traditional detection method is manual visual inspection, which has low efficiency, poor real-time ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/89
Inventor 高阳常红星夏卫平李书晓朱承飞
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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