Surface defect detection method, device and system

A defect detection and defect technology, applied in the field of inspection, can solve problems such as poor reliability

Pending Publication Date: 2020-10-30
WUXI LEAD INTELLIGENT EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a surface defect detection method, device and system for t

Method used

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  • Surface defect detection method, device and system
  • Surface defect detection method, device and system
  • Surface defect detection method, device and system

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[0029] In order to facilitate the understanding of the application, the application will be described in a more comprehensive manner with reference to the relevant drawings. The drawings show preferred embodiments of the application. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive.

[0030] See figure 1 , A surface defect detection method, including step S100, step S200 and step S300.

[0031] Step S100: Obtain a fringe image.

[0032] Specifically, the fringe image is an image formed on the surface of the object to be detected after the strip of light emitted by the strip light source is reflected by the first reflector and the second reflector. This example uses a strip light source to emit a linear light (ie strip light), please refer to figure ...

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Abstract

The invention relates to a surface defect detection method, device and system, and the method comprises the steps: forming spaced stripes on a mirror surface by reflection of a light path, concretely,enabling strip light emitted by a strip light source to be reflected by a first reflector and a second reflector, finally projecting the strip light to a to-be-detected surface of a to-be-detected object, and forming stripes on the to-be-detected surface; and then analyzing by acquiring a stripe image of the to-be-detected surface, and indirectly obtaining a detection result of whether the to-be-detected surface has defects by judging whether stripes formed on the to-be-detected surface are bent or not. By means of the scheme, whether the concave-convex defects exist on the cylindrical surface or the to-be-detected surfaces in other shapes or not can be effectively and automatically detected, the omission ratio is extremely low, manual detection can be replaced, and high detection efficiency is achieved. The scheme has the advantage of high detection reliability when being used for detecting the surface defects of the lithium battery.

Description

technical field [0001] The present application relates to the field of detection technology, in particular to a surface defect detection method, device and system. Background technique [0002] Lithium battery is a battery that uses lithium metal or lithium alloy as the positive / negative electrode material and uses a non-aqueous electrolyte solution. It is widely used due to its high energy, long service life, light weight, low self-discharge rate, and environmental protection. into daily production and life. In the production process of lithium batteries, multiple processes such as raw material processing, battery production, and finished product testing are required to ensure that the final lithium batteries have better working reliability. [0003] The traditional lithium battery surface defect detection adopts the method of camera combined with manual detection, but because the surface of the cylindrical lithium battery is a curved surface, the light source effect is un...

Claims

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Application Information

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IPC IPC(8): G01N21/88
CPCG01N21/8851G01N2021/8887
Inventor 不公告发明人
Owner WUXI LEAD INTELLIGENT EQUIP CO LTD
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