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Frequency multiplication differential anti-interference mirror reflection orthogonal imaging circumferential weld detection device and method

A specular reflection and detection device technology, which is applied in the direction of measuring devices, analyzing materials, optical testing flaws/defects, etc., to ensure the consistency of imaging, improve the recognition rate, and overcome the effect of large volume

Pending Publication Date: 2021-01-01
宁波积微速成智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the application of weld defect detection, due to the interference of natural light and other environmental factors, it is necessary to extract high-quality sample pictures, but the current retrieval does not involve environmental factors, and there is a demand for the detection of circular welds. Both are tubular structure samples

Method used

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  • Frequency multiplication differential anti-interference mirror reflection orthogonal imaging circumferential weld detection device and method
  • Frequency multiplication differential anti-interference mirror reflection orthogonal imaging circumferential weld detection device and method
  • Frequency multiplication differential anti-interference mirror reflection orthogonal imaging circumferential weld detection device and method

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Embodiment 1

[0042] Such as figure 1 As shown, the present invention provides a girth weld detection device for frequency multiplication differential anti-interference mirror reflection orthogonal imaging, including a support rotation mechanism 1, an industrial computer 2, a stepping motor 3 connected to the industrial computer 2, and an industrial WIFI The signal terminal 4, the light source controller 5 and the industrial camera 6, the LED light source 7 connected to the light source controller 5 and the installation top plate 8 positioned above the supporting rotating mechanism 1, the industrial computer 2, the industrial WIFI signal terminal 4, The light source controller 5 , the industrial camera 6 and the LED light source 7 are all arranged on the support rotation mechanism 1 . The installation top plate 8 is located above the girth weld detection object 9 and a rotating bearing 10 is provided between the supporting rotating mechanism 1 and the installation top plate 8 . The rotating...

Embodiment 2

[0050] Such as Figure 6 As shown, the present invention provides a girth weld detection method of frequency multiplication differential anti-interference mirror reflection orthogonal imaging, and its implementation method is as follows:

[0051] S1, input start signal;

[0052] S2. According to the starting signal, control the light source controller through the industrial computer to drive the LED light source, and use the frequency multiplication differential imaging sequence to modulate the intensity of the LED light source with frequency f. The implementation method is as follows:

[0053] S201. According to the start signal, control the light source controller to drive the LED light source through the industrial computer;

[0054] S202. Set the output timing of the LED light source as a square wave with a modulation frequency f by using the frequency multiplication differential imaging timing;

[0055] S203. Using a square wave with a modulation frequency f to modulate...

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Abstract

The invention provides a frequency multiplication differential anti-interference mirror reflection orthogonal imaging circumferential weld detection device and method, and belongs to the technical field of weld detection. The frequency multiplication differential anti-interference mirror reflection orthogonal imaging circumferential weld detection device comprises a support rotating mechanism, anindustrial personal computer, a stepping motor, an industrial WIFI signal end, a light source controller, an industrial camera and an LED light source, wherein the stepping motor, the industrial WIFIsignal end, the light source controller and the industrial camera are connected with the industrial personal computer, the LED light source is connected with the light source controller, and the industrial personal computer, the industrial WIFI signal end, the light source controller, the industrial camera and the LED light source are all arranged on the support rotating mechanism. According to the frequency multiplication differential anti-interference mirror reflection orthogonal imaging circumferential weld detection device and the method, ambient light interference is removed through adopting a frequency multiplication difference technology, the contrast ratio of weld seam imaging details is improved through adopting the mirror reflection illumination imaging principle, imaging consistency of all positions of the circumferential weld seam is ensured in an orthogonal imaging mode, the imaging definition and consistency of the circumferential weld seam and similar structures of the circumferential weld seam of an electronic component can be effectively improved, and high-quality image information is provided for visual monitoring of the welding technological process, and therefore the recognition rate of online detection is increased.

Description

technical field [0001] The invention belongs to the technical field of weld seam detection, and in particular relates to a circumferential weld seam detection device and method for orthogonal imaging of frequency multiplication differential anti-interference mirror reflection. Background technique [0002] More and more mechatronic equipment is used in industry and life. With the popularization and application of laser welding technology in recent years, a large number of electronic and power devices are welded by laser welding technology, and the ring weld is the representative welding The industry has been widely used. At the same time, because the visual inspection of girth welds has the characteristics of axial symmetry, and the optical conditions of the industrial production environment are complex, the current surface imaging machine vision technology based on diffuse reflection imaging technology has shown disadvantages in the inspection application process. Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/01G01N21/88
CPCG01N21/01G01N21/84G01N21/8851G01N2021/0112G01N2021/8416G01N2021/8887
Inventor 高椿明龚艳丽
Owner 宁波积微速成智能科技有限公司
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