Intelligent online detection device based on multi-source information fusion for welded joint

Abstract

The invention discloses an intelligent online detection device based on multi-source information fusion for a welded joint. High-quality and time-varying infrared imaging information is acquired according to the welding residue temperature, an infrared light video and a visible light video of a real-time welded joint during the welding process are acquired through an infrared ray array sensor anda visible light camera, the fusion and the intelligent identification of two video information are realized through a video information acquisition module and an intelligent processing module, information such as the weld width, the center path, the welded joint texture and the surface temperature field distribution of the welded joint is acquired, and the quality of the welded joint is evaluatedby utilizing a deep learning algorithm; and the video information and a processing result are sent to a server through a wireless data transmission module, the image splicing and the matched fusing ofthe whole welded joint are carried out through the server according to the obtained infrared and visible light images of the welded joint, and a whole welding process quality evaluation database is built, so that a decision support is provided for welding process evaluation.

Description

Technical field: [0001] The invention relates to a welding seam intelligent online detection device based on multi-source information fusion, which belongs to the technical field of welding seam detection. Background technique: [0002] As an important technical means of modern machinery manufacturing, welding technology is widely used in machinery manufacturing. During the welding process, it is inevitable that human or non-human factors will cause the welding direction to change, which will lead to welding deviation; during the welding process, the change of welding parameters will directly affect the change of the shape of the weld, which will cause welding defects and seriously affect the welding quality. In the welding of important industries such as aerospace, nuclear power, chemical industry containers, high-speed rail manufacturing, and automobile ships, in addition to internal inspection requirements, strict weld appearance and surface defect inspections are require...

AI Technical Summary

Problems solved by technology

The X-ray method should be detected by radiation, and it is necessary to use radiation protection devices to avoid radiation risks, which leads to its cost process and low safety, and is not suitable for large-scale components and steel structure welding; although magnetic flux detection does not have hard rays. The harm to the human body is so terrible, but its electromagnetic pollution is also very large, which has a certain impact on the peripheral equipment and the environment; The technical requirements for personnel are very high, and the ultrasonic transmitting and receiving devices are relatively large, so it is difficult to realize welding of large-scale structural parts

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