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动车组转向架维修智能交检系统研究与开发

Research and development of intelligent handover inspection system for EMU bogie maintenance

  • 摘要: 为有效解决动车组转向架维修人工交检效率偏低、检测精度不足的问题,研究开发了一套融合智能多机器人控制、图像识别分析及深度学习等技术的动车组转向架维修智能交检系统。该系统通过推送定位机器人实现转向架自动精准对位,依托顶部、底部图像采集机器人完成转向架外部可见区域图像的全面采集,由智能检测子系统开展深度识别分析。系统集成基于YOLOv5的目标检测算法、基于语义分割的防松线检测算法、基于深度学习的多类型缺陷检测模型等关键技术,可实现CRH380B、CR400BF型动车组4种典型转向架的智能检测。经持续迭代优化后,试验验证结果表明,该系统对转向架外部可见关键部件的缺陷检测召回率达99%以上,检测准确率达95%,单台转向架检测效率提升48.5 %,能够有效替代转向架总装落成验收环节的人工检查。

     

    Abstract: To effectively address the issues of low efficiency and insufficient accuracy in manual inspection and acceptance during EMU bogie maintenance, this paper develops an intelligent handover inspection system for bogie maintenance that integrates emerging technologies such as intelligent multi-robot control, image recognition and analysis, and deep learning. The system achieves automatic and precise positioning of bogies through push positioning robots, completes comprehensive image collection of the externally visible areas of bogies by top and bottom image acquisition robots, and conducts in-depth recognition and analysis via the intelligent detection subsystem. Integrating key technologies including YOLOv5-based object detection algorithm, semantic segmentation-based lockwire detection algorithm, and deep learning-based multi-type defect detection model, the system enables intelligent inspection of four typical types of bogies used in CRH380B and CR400BF EMUs. Through continuous iterative optimization, the test results show that the system achieves a defect detection recall rate of over 99% and an accuracy rate of 95% for the key externally visible components of bogies. Compared with traditional manual inspection, it can improve inspection efficiency by 48.5% per bogie. This system can effectively replace manual inspection in the final assembly acceptance process of bogies.

     

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