Automobile oil cooler pseudo soldering detection system and method based on machine vision

A machine vision and detection system technology, applied in the direction of instruments, measuring devices, scientific instruments, etc., can solve the problems that affect the detection speed and detection efficiency of the production line, cannot guarantee the efficiency and accuracy of detection, missed detection and false detection, etc., to achieve The workpiece imaging effect is good, the lighting conditions are stable, and the effect of ensuring accuracy

Pending Publication Date: 2021-06-25
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional detection method is to detect such defects manually, but manual detection is affected by subjective factors. It is difficult for the human eye to detect the bulge and record the number and position of the bulge, and it is prone to fatigue, especially when the bulge is not obvious enough. , it is prone to missed and false detections, and the efficiency and accuracy of detection cannot be guaranteed, which affects the detection speed and detection efficiency of the production line

Method used

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  • Automobile oil cooler pseudo soldering detection system and method based on machine vision
  • Automobile oil cooler pseudo soldering detection system and method based on machine vision
  • Automobile oil cooler pseudo soldering detection system and method based on machine vision

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Experimental program
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Embodiment 1

[0035] In this embodiment, a machine vision-based automobile oil cooler virtual welding detection system is disclosed, including:

[0036] An image acquisition device, used to acquire images before and after stamping of the oil cooler;

[0037] The virtual welding detection module is used to analyze the images before and after stamping of the oil cooler, obtain the area of ​​the void area corresponding to the image before and after stamping, and determine the number and position of the interlayer void area with area change in the image before and after stamping; according to the area change The number and location of interlayer void areas determine the number and location of virtual welds in the oil cooler.

[0038] Further, it also includes:

[0039] The controller is used to receive the compression signal of the compression oil cooler and the stamping completion signal of the oil cooler, and send the signal to the industrial computer;

[0040] The industrial computer is us...

Embodiment 2

[0085] In this embodiment, a machine vision-based method for detecting false welding of an automobile oil cooler is disclosed, including:

[0086] Collect images before and after stamping of the oil cooler;

[0087] Analyze the images before and after stamping of the oil cooler respectively, and obtain the area and position of the void area corresponding to the images before and after stamping;

[0088] Determining the number and location of interlaminar void regions with area changes in the images before and after stamping;

[0089] According to the number and location of interlayer void areas where area changes occur, the number and location of the oil cooler's virtual welds are determined.

Embodiment 3

[0091] In this embodiment, an electronic device is disclosed, including a memory, a processor, and computer instructions stored in the memory and executed on the processor. When the computer instructions are executed by the processor, a method disclosed in Embodiment 2 is completed. The steps described in a machine vision-based method for detecting false welding of an automobile oil cooler.

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Abstract

The invention discloses an automobile oil cooler pseudo soldering detection system and method based on machine vision, and the system comprises: an image collection device which is used for collecting images before and after stamping of an oil cooler; and a cold solder joint detection module which is used for analyzing the images before and after stamping of the oil cooler, obtaining the areas of gap areas corresponding to the images before and after stamping, determining the number and the positions of interlayer gap areas with area changes in the images before and after stamping, and according to the number and the position of the interlayer gap area with the area change, determining the number and the position of cold joint of the oil cooler. The accuracy of cold solder joint detection of the oil cooler is improved.

Description

technical field [0001] The invention relates to the technical field of workpiece defect detection, in particular to a machine vision-based detection system and method for false welding of an automobile oil cooler. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] With the rapid development of modern industrial manufacturing technology, the number of products is increasing, and the requirements for product quality are getting higher and higher. In the production process of automobile oil cooler, the workpiece needs to be stamped. After the oil cooler is stamped, it is easy to produce plastic deformation at the virtual welding position, and the appearance of the workpiece is "bulge". According to the number and size of the "bulge" Judge whether the workpiece is qualified to avoid the risk of leakage. The traditional detection method is to d...

Claims

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Application Information

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IPC IPC(8): G01N21/88G01N21/01
CPCG01N21/88G01N21/8851G01N21/01G01N2021/8887G01N2021/0112
Inventor 程勇田敏泽刘丹丹
Owner SHANDONG UNIV
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