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Rectangular multi-light source lighting device and defect detection method for its application

A multi-light source and rectangular technology, which is applied in the direction of optical testing flaws/defects, measuring devices, color TV parts, etc., can solve the problems of high difficulty in secondary assembly and high requirements for installation technicians, and achieve low assembly difficulty requirements, The effect of high detection efficiency and saving the initial cost

Active Publication Date: 2022-05-27
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of difficult secondary assembly of existing lighting devices and high requirements for installation technicians, the embodiments of the present invention provide a rectangular multi-light source lighting device on the one hand, including:

Method used

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  • Rectangular multi-light source lighting device and defect detection method for its application
  • Rectangular multi-light source lighting device and defect detection method for its application
  • Rectangular multi-light source lighting device and defect detection method for its application

Examples

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Effect test

no. 1 example

[0041] An embodiment of the present invention provides a rectangular multi-light source lighting device, including:

[0042] an adjustment bracket, the adjustment bracket includes a z-direction bracket and a movable frame which is arranged on the z-direction bracket and can move vertically along the z-direction bracket;

[0043] The lighting bracket includes a joint for connecting with the movable frame and a "well"-shaped frame located below the joint. The "well"-shaped frame extends in the circumferential direction to form four pairs of cantilevers, and the inner sides of the cantilevers are opposite to each other. It is used for erecting light sources, and the outside of the two opposite cantilevers is used for setting angle adjustment devices; the "well"-shaped frame is also provided with a shooting component at the bottom;

[0044] an object table, the object table is the area to be measured formed at the bottom of the lighting bracket;

[0045] a controller, at least us...

no. 2 example

[0049] Please refer to Figure 1 to Figure 4 As shown, an embodiment of the present invention provides a rectangular multi-light source lighting device, including:

[0050] Adjusting bracket 1, the adjusting bracket includes a z-direction bracket 11 and a movable frame 12 which is arranged on the z-direction bracket 11 and can move vertically along the z-direction bracket 11;

[0051] The lighting bracket 2 includes a joint part 21 for connecting with the movable frame 12 and a "well"-shaped frame 22 located below the joint part 21, and the "well"-shaped frame 22 extends in the circumferential direction to form four pairs of cantilevers 23 , the inner side of the opposite cantilevers 23 is used to set up the light source 24, and the outer side of the opposite cantilever 23 is used to set the angle adjustment device; the "well"-shaped frame 22 is also provided with a shooting assembly 25 at the bottom;

[0052] an object table, the object table is the area to be measured forme...

no. 3 example

[0060] What is different from the second embodiment above is that the joint part is a first electric slider with a lighting bracket arranged on the first x-direction beam, and a second electric slider is also provided between the first x-direction beam and the y-direction beam. slider. The above-mentioned visual inspection module is also used to obtain the real-time image of the workpiece to be tested, and to determine the real-time geometric center point of the workpiece to be tested and the extra x offset of the camera assembly according to the real-time image, and the controller also uses According to the additional x offset, the position of the chute of the first electric slider on the first x-direction beam is controlled to determine the x-direction stroke of the lighting bracket, so that the camera assembly and the to-be-to-be- The real-time geometric center point of the measured workpiece maintains the preset x offset.

[0061] The visual inspection module is also used...

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Abstract

The invention discloses a rectangular multi-light source lighting device and a defect detection method for its application. The lighting device includes: an adjustment bracket, including a z-direction bracket and a movable frame that can move vertically along the z-direction bracket; the lighting bracket , including a "well"-shaped frame, the "well"-shaped frame extends in the circumferential direction to form four pairs of cantilevers, the inner sides of the two opposite cantilevers are used to erect the light source, and the outer sides of the two opposite cantilevers are used to set the angle adjustment device; The "well"-shaped frame is also provided with a shooting component at the bottom; an object stage is formed at the bottom of the lighting bracket to be measured; a controller is used to control each of the light sources to be turned on or off according to preset rules, and Controlling the shooting component to acquire the image of the workpiece to be tested; the machine vision detection module is used to generate a composite image according to the images of the workpiece to be measured acquired by the shooting component under all lighting environments. The defect detection method is applied to the above-mentioned lighting device. The modular assembly of the invention guarantees the detection reliability.

Description

technical field [0001] The invention relates to the field of automatic detection devices, in particular to a rectangular multi-light source lighting device and a defect detection method for its application. Background technique [0002] The existing surface defect detection of parts is usually done manually, which has slow detection speed, great influence of subjective factors, low reliability, and affects the processing quality of products. Therefore, a defect detection method based on image recognition technology has emerged, and the above detection method has a great dependence on the corresponding lighting device and the corresponding imaging system. [0003] The current lighting device usually has a complex structure. In order to ensure the detection efficiency and reliability when applying the defect detection method, the parameters such as the height and position of the camera and each light source usually require professional technicians to install and debug, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/88G01N21/01H04N5/265
CPCG01N21/8806G01N21/8851G01N21/01H04N5/265G01N2021/8809G01N2021/8835G01N2021/8887
Inventor 金闳奇陈新度吴磊
Owner GUANGDONG UNIV OF TECH
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