An Automatic Detection and Identification Method of Welded Joints Based on Deep Neural Network

Welding quality is an important factor to affect the performance, quality and strength of different products, and it will affect the safe production. Therefore, welding quality detection is a key process of industrial production. And the detection and identification of welded joints are the premise of welding quality detection, which could reduce the quality detection range and improve the detection precision. Welded joint identification is also important for providing information for automatic control of welding process. Faced with the complex characteristics of industrial environment, such as weak texture, weak contrast and corrosion, we propose a detection and identification method of welded joints based on deep neural network. Firstly, aimed at the problem of insufficient training samples, combined with image processing and Generative Adversarial Network (GAN), the high-quality training samples are generated. Secondly, the updating mechanism of training samples is established to guarantee that the deep neural network model could cover all samples. Finally, the detection and identification of welded joints are realized by the deep neural network which could avoid the handcrafted features of conventional machine learning methods. Experiments show that the proposed method could quickly and efficiently finish the detection and identification task of welded joints. Meanwhile, the proposed method could well solve the detection and identification problems of complex industrial environment.