Leveraging deep learning techniques for ship pipeline valve leak monitoring

• Published in: Ocean engineering 2023-11, Vol.288, p.116167, Article 116167
• Main Authors: Zhengjie, Liu, Xiaohui, Yang, Mengmeng, Wu, Weilei, Mu, Guijie, Liu
• Format: Article
• Language: English
• Subjects: Fault diagnosis; Multi-channel multi-scale convolutional neural network; Ship pipeline valve leakage; Signal-to-image mapping
• ISSN: 0029-8018; 1873-5258
• DOI: 10.1016/j.oceaneng.2023.116167

The monitoring of ship pipeline valve leaks holds immense significance as it serves to enhance ship safety, mitigate energy and material losses, and protect the health and sustainability of the marine environment. In comparison to traditional expert-based fault diagnosis methods, this study presents a deep learning-based fault feature extraction approach for end-to-end valve leak fault diagnosis. To address the challenge of incomplete leak fault description by a single sensor, a Multi-Channel Multi-Scale Convolutional Neural Network (MCMS-CNN) model is established. Diverging from existing methods, the proposed MCMS-CNN model automatically extracts fault features from grayscale images obtained from two sensors and performs feature-level fusion for fault classification, thereby mitigating the impact of data redundancy and noise and enhancing fault recognition accuracy. The effectiveness of the proposed approach is verified through valve leak experiments, and comparisons are conducted with different models and information fusion methods. The results demonstrate that the proposed MCMS-CNN model exhibits advantages in terms of accuracy and robustness, confirming its practicality in ship pipeline valve leak fault diagnosis. •Using deep learning methods to automatically extract raw signal features, avoiding the influence of expert experience and human factors.•Fuses fault information from multiple sensors to improve the accuracy of leakage identification of ship pipeline valves.•Studied the performance difference between MCMS-CNN, BP neural network and traditional CNN.•Studied the effectiveness of feature-level data fusion methods in ship pipeline valve leakage.