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Plug hole defect detection method and plug hole defect detection equipment based on image detection

A defect detection and image detection technology, which is applied in the direction of optical defect/defect, measuring device, instrument, etc., can solve the problem of inability to detect three-dimensional shape of the depth of the depression, and achieve the effect of accurate defect detection results

Active Publication Date: 2021-04-16
深圳宜美智科技股份有限公司
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Problems solved by technology

[0006] The present invention provides a plug hole defect detection method and plug hole defect detection equipment based on image detection, which can realize effective detection of resin depression defects of PCB boards; to solve the existing plug hole defect detection method and plug hole defect detection equipment The technical problem of being unable to detect the depth of the resin depression and the three-dimensional shape of the depression

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  • Plug hole defect detection method and plug hole defect detection equipment based on image detection
  • Plug hole defect detection method and plug hole defect detection equipment based on image detection
  • Plug hole defect detection method and plug hole defect detection equipment based on image detection

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Embodiment Construction

[0064]Next, the technical solutions in the embodiments of the present invention will be apparent from the embodiment of the present invention, and it is clearly described, and it is understood that the described embodiments are merely embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, those skilled in the art are in the range of the present invention in the scope of the present invention without making in the pre-creative labor pre-.

[0065]The sequence word "first" "second" "third" in the terms of the present invention is intended to be a description, and cannot be understood as an indication or implies relative importance, and is not limited to the order of order;

[0066]Further, the term "connection" "setting" in the terms of the present invention should be a broad understanding, which may be a component directly connected or directly disposed on another component, which can be an indirect connection or indirectly set ...

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Abstract

The present invention provides a plug hole defect detection method based on image detection. The method includes: under the illumination of the first side light source, the camera acquires the first orthographic projection image; under the illumination of the second side light source, the camera acquires the second orthographic projection image The projected image; based on the first shadow part and the second shadow part, calculate the recessed area of ​​the plug hole depression; according to the sunken area of ​​the plug hole depression, the first shadow part and the incident angle of the first side light source, calculate the plug hole of the plug hole depression Depth; if the plug hole depth is greater than the preset value, it is determined that the PCB board has a resin plug hole defect. The present invention also provides a plug hole defect detection device. Through the setting of the first side light source and the second side light source, the present invention can obtain the first shadow part and the second shadow part related to the plug hole depression, and then can pass the first shadow The portion and the second shaded portion calculate the plug hole depth and the plug hole shape of the plug hole depression.

Description

Technical field[0001]The present invention relates to the field of image detection, and more particularly to an image detection method and a plug defect detection device based on image detection.Background technique[0002]With the development of electronic technology, especially the in-depth development of 5G technology, the frequency of data transmission is getting higher and higher, and the circuit board production has also introduced more and more new processes, and the PCB resin fumble process is the circuit board production process. An important process.[0003]During the landfill of the PCB resin hole, bubbles are generated inside the resin. After the shovel is disposed, the recess of some resin surfaces, which affect the performance of the PCB sheet.[0004]The existing defect detection device can only detect the two-dimensional shape of the recessed on the surface of the PCB sheet, and the three-dimensional shape of the depression and the three-dimensional shape of the recess can...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/01G01N21/95
CPCG01N21/01G01N21/95
Inventor 陈胜鹏
Owner 深圳宜美智科技股份有限公司
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