A real-time detection method and system for universal welding arc starting continuity

Abstract

The invention discloses a real-time detection method and system for universal welding arc-starting continuity. The detection method comprises: firstly sampling the collected high-frequency current data with sliding window, and according to the known arc-starting point and arc-extinguishing point as: Annotate the samples to generate a data sample set; then build a neural network model that integrates depthwise separable convolution and dilated causal convolution, and use the generated data sample set for training to obtain a welding arcing continuity detection model; finally obtain a new The real-time high-frequency current data is input into the trained detection model for prediction, and the arc starting point and arc extinction point are output in real time. The invention adopts the welding current signal generally possessed by electric welding machines, and combines the deep learning and the convolutional neural network training method without feature structure to design a universal, accurate and real-time arc starting continuity detection method, which can detect the continuity of arc starting in the welding process. Real-time intelligent detection of arc-starting events and arc-extinguishing events.

Description

technical field [0001] The invention relates to a method and a system for real-time detection of arc starting continuity of universal welding, and belongs to the technical field of automatic welding. Background technique [0002] Intelligent welding is one of the most important research topics in the field of intelligent manufacturing. The sensing technology and its information processing are the key elements to realize the intelligence and automation of the welding process. In recent years, the sensing technology with the characteristics of miniaturization, non-contact and large transmission capacity has been more applied to the welding process and real-time quality control, but more attention has been focused on the defect detection of welding. No one uses sensor data for continuity detection of welding arcs. [0003] Welding arc starting continuity detection refers to detecting the arc starting time and ending time of each welding, which plays a very important role in w...

AI Technical Summary

Problems solved by technology

On the one hand, frequent arcing, that is, the continuity of arcing is too short, will cause welding consistency problems, resulting in too many welded joints, and more likely to have hidden defects; on the other hand, the continuity of arcing can reflect the welder's operational ability, Through the continuous detection of arc starting, the welder's daily long-term welding and short-term welding can be counted, which is of great significance to the evaluation of process and personnel performance

[0004] Considering that the welding process is full of intense light, heat and noise, the current welding continuity detection mainly relies on visual inspection and random inspection after welding, which has defects such as inaccurate detection, large delay, and difficult closed-loop control

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