Luminance real-time adjusting device of light source in pole piece surface defect detection and adjusting method thereof

A technology for light source brightness and defect detection, applied in light sources, electric light sources, lighting devices, etc., can solve problems such as difficulty in ensuring image quality, complex structure and algorithm, and achieve the effect of ensuring accuracy without affecting detection accuracy.

Inactive Publication Date: 2014-06-04
HENAN UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

The disadvantage of this design is that the structure algorithm of this invention is complicated, and when the surface characteristics of the object to be inspected change, the light intensity component of the light source controlled by it is difficult to ensure the image quality

Method used

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  • Luminance real-time adjusting device of light source in pole piece surface defect detection and adjusting method thereof
  • Luminance real-time adjusting device of light source in pole piece surface defect detection and adjusting method thereof

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Embodiment Construction

[0024] The real-time adjustment device and adjustment method of the brightness of the light source in the pole piece surface defect detection of the present invention will be further described in conjunction with specific implementation methods.

[0025] The LED light source includes a group of high-brightness LEDs, a PCB board and a housing. The LEDs are welded on the PCB board and assembled in the housing. There is a condenser prism outside the PCB.

[0026] The light source light intensity control module 8 is realized by a light source light intensity control circuit.

[0027] The contrast color card is a monochromatic gray scale card, the gray value of this card is similar to the color of the tested pole piece and is under the same light source as the tested pole piece. When the brightness changes, the contrast color card image collected by the camera changes synchronously with the gray value of the inspected electrode image, that is, the brightness change of the contrast ...

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Abstract

The invention discloses a luminance real-time adjusting device of a light source in pole piece surface defect detection and an adjusting method thereof. The luminance real-time adjusting device comprises an LED light source, a contrast color swatch, an image collecting device and a light source constant-current driver. The light source luminance real-time adjusting device based on close loop control enables the light source to be capable of being adjusted in luminance in real time according to the joint function of light of outside environments and the light source on the contrast color swatch so as to enable a detected pole piece to be adjusted in an optimized illumination state, and the quality of images is ensured.

Description

technical field [0001] The invention relates to the field of on-line detection of industrial products, in particular to a device for real-time adjustment of light source brightness based on closed-loop control in a lithium battery pole piece surface defect detection system and an adjustment method thereof. The illuminance of the surface of the contrast color card in the detection area adjusts the light intensity of the light source in real time, so that the inspected pole piece is always in the best lighting state during the detection process. Background technique [0002] In recent years, due to its simple structure, fast speed, and convenient on-site installation, the visual inspection system has well met the needs of the modern manufacturing industry and has become the most promising technology in the online inspection of industrial products. The pole piece surface defect detection system realizes the pole piece surface defect detection by processing and analyzing the pol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02G01N21/88
CPCY02B20/40
Inventor 徐巧玉黄艳王军委韦孟辉赵伟超王卫敏王已伟王红梅
Owner HENAN UNIV OF SCI & TECH
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