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Xu, G., Liao, W., Zhang, X., Li, C., He, X. and Wu, X. (2023) Haar Wavelet Downsampling: A Simple but Effective Downsampling Module for Semantic Segmentation. Pattern Recognition, 143, 109819. https://doi.org/10.1016/j.patcog.2023.109819

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• TITLE: Plunger Pump Fault Diagnosis Method Based on Wavelet Convolution and Multi-Head Self-Attention Mechanism for Multi-Channel Feature Fusion

  AUTHORS: Pu Zhou, Zhichun Qian, Dongliang Fu, Yi Zhang

  KEYWORDS: Plunger Pump Fault Diagnosis, Wavelet Decomposition, Multi-Head Self-Attention Mechanism, Multi-Channel Fusion

  JOURNAL NAME: Journal of Computer and Communications, Vol.13 No.7, July 30, 2025

  ABSTRACT: To address the issues of low accuracy, high dependence on prior knowledge, and poor adaptability in fusing multi-channel features in existing plunger pump fault diagnosis methods, a new method based on single-channel wavelet convolution and multi-head self-attention mechanism is proposed. This method first applies wavelet decomposition and 2D convolution to extract local features of each channel signal individually, and then utilizes the multi-head self-attention mechanism to enhance inter-channel mutual information perception, enabling intelligent diagnosis of plunger pump conditions. Experimental results show that this method can effectively diagnose plunger pump faults with an accuracy of 99.54%, outperforming other deep learning models in terms of training efficiency and diagnostic accuracy.