LIZhen-fei, YUANTong-wen, ZHUGuang-yu, YANGChao, MEIYu-ye
To address the challenges of frequent bearing failures under complex working conditions, as well as the low real-time performance and strong dependence on manual feature extraction in traditional diagnostic methods, this paper proposes a bearing fault diagnosis method based on a deep learning model combining a Multi-Scale Convolutional Neural Network (MSCNN) and Long Short-Term Memory (LSTM), and develops an intelligent bearing health management system. The system adopts an end-to-end diagnostic workflow, directly taking raw time-domain vibration signals as input. It extracts hierarchical local features across different frequency domains through MSCNN, and captures the temporal evolution of fault characteristics using LSTM, thereby achieving high-accuracy automated fault classification. To enhance the interpretability of diagnostic results and support intelligent maintenance decisions, the system integrates the Chinese large language model iFLYTEK Spark, which generates natural language diagnostic reports and maintenance suggestions through standardized prompts. The system is deployed on a domestically developed Phytium quad-core processor platform, ensuring full autonomy and reliability of both hardware and software components for industrial applications. Experimental results show that the proposed system achieves an average classification accuracy of 98.46% on the CWRU bearing dataset, and 96.73% on the AITHE bearing fault dataset, demonstrating strong robustness and cross-dataset generalization under complex and noisy conditions. With real-time visualization of diagnostic results and maintenance recommendations through a human-machine interface (HMI), this system provides a reliable and intelligent solution for equipment health management and predictive maintenance.