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Visual inspection method for connector pins

A visual inspection and connector technology, applied in the field of visual inspection, can solve the problems of false detection, false detection, missed detection, difficult control of detection standards and quality, slow detection speed, etc. Accurate and stable effect

Inactive Publication Date: 2022-07-05
深圳市海蓝智能科技有限公司
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current connector detection is generally carried out manually with an electron microscope. The detection speed is relatively slow, and due to workers' cognitive standards and various subjective factors, there are many false detections, false detections, and missed detections. It is difficult to control the detection standards and quality. control

Method used

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  • Visual inspection method for connector pins

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Embodiment Construction

[0021] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] The present invention provides a visual detection method for connector pins, including a visual solution for detection and a detection algorithm, wherein when determining the visual solution for detection, it is necessary to determine a camera and lens for detection, and a light source for detection.

[0023] Specifically, in this solution, different models of cameras and lenses are selected according to the size and detection accuracy requirements of different products. The selection method is as follows:

[0024] The size of the product to be tested is: L*W*H (where L*W is the surface to be tested, and L is the long side);

[0025] The detection accuracy is: Acc;

[0026] The precision coefficient is: k (3≤k≤10);

[0027] The zoom ratio of the field of view is: r (r>1);

[0028] The pixel size is: p;

[0029] The working distance ...

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Abstract

The invention discloses a visual detection method for connector pins, and the method comprises a detection algorithm which comprises the following steps: 1, setting an ROI region; 2, a pin template is manufactured; step 3, performing coarse positioning on the pins of the detection image by using a template matching mode; 4, obtaining a target area through threshold segmentation; step 5, obtaining a pin feature region through feature extraction and feature screening; 6, after central point image coordinates of all the pin feature areas are calculated, straight line fitting is carried out by using the points, and a straight line of a normal pin path is obtained; and 7, calculating the horizontal distance and the vertical distance of the pins, and judging whether the pins are qualified or not. The beneficial effects of the invention lie in that the detection method can be used in cooperation with automatic equipment to rapidly detect products, the detection result is high in accuracy and stable, the shipment quantity of the products is greatly improved, and corresponding parameters can be adjusted according to the quality inspection standard of shipment requirements, and the shipment quality can be controlled.

Description

technical field [0001] The invention relates to the technical field of visual inspection, in particular to a method for visual inspection of connector pins. Background technique [0002] The current connector inspection generally uses manual inspection with electron microscopes, and the inspection speed is relatively slow, and due to workers' cognitive standards and various subjective factors, there are many false inspections, false inspections, and missed inspections. control. [0003] Therefore, the prior art has shortcomings and needs to be improved. SUMMARY OF THE INVENTION [0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a visual detection method for connector pins, which can be used for visual detection of plug-in electronic component connectors. [0005] The technical solution of the present invention is as follows: the present invention provides a visual detection method for connector pins, comprising: a d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06V10/25G06V10/28G06V10/75G06V10/764G06K9/62G06T7/11G06T7/136G06T7/194G06T7/66
CPCG06T7/0004G06T7/11G06T7/136G06T7/194G06T7/66G06T2207/30108G06F18/24
Inventor 文茜朱海平刘平高挺峰
Owner 深圳市海蓝智能科技有限公司
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