关键词: 智能故障诊断, 非接触式振动测量, 事件相机, 扩散模型, 类脑计算

Abstract: Vibration monitoring and signal processing are crucial methods for machine fault diagnosis. Currently, the popular contact vibration measurement method has achieved significant results. However, such methods have high requirements for deployment environments, and are not suitable for many engineering scenarios. Therefore, contactless methods for vibration monitoring and fault diagnosis are gaining increasing attention. Event-based camera is a bio-inspired contactless dynamic visual sensor with extremely high temporal resolution, high dynamic range, and low data redundancy, which can capture mechanical micro-vibrations from a visual perspective. This paper proposes a contactless machine intelligent transfer diagnosis method enabled by dynamic vision. An event-based camera is used to capture the dynamic visual vibration signals of machines. A cross-domain diffusion generation model of dynamic visual data is established, enabling the intelligent generation of visual data in unknown fault states in testing scenarios. A novel intelligent method for processing dynamic visual data and recognizing machine fault patterns is proposed based on the neuromorphic computing framework, achieving cross-domain intelligent transfer diagnosis effect. The proposed method has been validated on a nuclear power plant pump circulation test bench. The results show that the proposed method is able to achieve intelligent transfer diagnosis of machines based on dynamic visual data, and provides an effective and promising solution for vibration measurement and fault diagnosis in engineering scenarios in the perspective of vision.

Key words: intelligent fault diagnosis, contactless vibration monitoring, event-based camera, diffusion model, neuromorphic computing