As the operational length of railways in China continues to expand,traditional patrol inspection methods and modes have increasingly struggled to meet the growing requirements of railway operations for safety and bene...As the operational length of railways in China continues to expand,traditional patrol inspection methods and modes have increasingly struggled to meet the growing requirements of railway operations for safety and benefits.Based on an analysis of railway infrastructure patrol inspection requirements,this paper presents the development of a space-air-ground integrated intelligent patrol inspection technology system that leverages emerging technologies,including UAVs and satellite remote sensing.It also proposes an application solution and implementation path,along with the design of a componentized and plug-in system framework.Ablation experiments on the plug-in-based algorithm for intelligent detection of color steel tile hazards demonstrated the proposed BINDeepLabV3+algorithm's strong applicability to both satellite and UAV images,achieving an mIoU of 89.11%and an mPA of 94.83%.These results confirm the implementability of the plugin approach.Demonstration applications conducted on a selected section of the Beijing-Shanghai High Speed Railway validated the feasibility and advancement of the proposed system.The space-air-ground multi-source patrol inspection approach enables complementarity and collaboration,facilitating the timely and effective identification of a greater number of safety hazards.This approach provides a multi-faceted,full-process,one-stop,intelligent,and lean application model for railway infrastructure patrol inspections.展开更多
Over the past few years,major investments have been directed toward building new railway lines and upgrading existing ones.Many of these lines include critical infrastructure where operational and safety conditions mu...Over the past few years,major investments have been directed toward building new railway lines and upgrading existing ones.Many of these lines include critical infrastructure where operational and safety conditions must be carefully considered throughout their life cycle.Recent advancements in science and technology have enabled more effective structural monitoring of railway systems,largely driven by the adoption of intelligent strategies for inspection,maintenance,monitoring,and risk management.Research continues to expand and deepen the knowledge in this area;however,it remains a challenging field due to factors such as the complexity of railway systems,the high cost of implementation,and the need for reliable long-term data.展开更多
The China comprehensive inspection train(CIT)is designed for evaluating railway infrastructure to ensure safe railway operations.The CIT integrates an array of inspection devices,capable of simultaneously assessing ra...The China comprehensive inspection train(CIT)is designed for evaluating railway infrastructure to ensure safe railway operations.The CIT integrates an array of inspection devices,capable of simultaneously assessing railway health condition parameters.The CIT450,representing the second generation,can reach a top speed of 450 km/h with inspection on the infrastructure.This paper begins by outlining the global evolution of inspection trains.It then focuses on the critical technologies underlying the CIT450,which include:(1)real-time inspection data acquisition with spatial and temporal synchronization;(2)intelligent fusion and centralized management of multi-source inspection data,enabling remote supervision of the inspection process;(3)technologies in inspecting track,train–track interaction,catenary,signalling systems,and train operating environment;and(4)AI-driven analysis and correlation of inspection data.The future developmental directions for comprehensive inspection trains are discussed finally.The CIT450’s approach to real-time railway health monitoring can enrich traditional inspection means,operational,and maintenance methods by enhancing inspection efficiency and automating railway maintenance.展开更多
文摘As the operational length of railways in China continues to expand,traditional patrol inspection methods and modes have increasingly struggled to meet the growing requirements of railway operations for safety and benefits.Based on an analysis of railway infrastructure patrol inspection requirements,this paper presents the development of a space-air-ground integrated intelligent patrol inspection technology system that leverages emerging technologies,including UAVs and satellite remote sensing.It also proposes an application solution and implementation path,along with the design of a componentized and plug-in system framework.Ablation experiments on the plug-in-based algorithm for intelligent detection of color steel tile hazards demonstrated the proposed BINDeepLabV3+algorithm's strong applicability to both satellite and UAV images,achieving an mIoU of 89.11%and an mPA of 94.83%.These results confirm the implementability of the plugin approach.Demonstration applications conducted on a selected section of the Beijing-Shanghai High Speed Railway validated the feasibility and advancement of the proposed system.The space-air-ground multi-source patrol inspection approach enables complementarity and collaboration,facilitating the timely and effective identification of a greater number of safety hazards.This approach provides a multi-faceted,full-process,one-stop,intelligent,and lean application model for railway infrastructure patrol inspections.
文摘Over the past few years,major investments have been directed toward building new railway lines and upgrading existing ones.Many of these lines include critical infrastructure where operational and safety conditions must be carefully considered throughout their life cycle.Recent advancements in science and technology have enabled more effective structural monitoring of railway systems,largely driven by the adoption of intelligent strategies for inspection,maintenance,monitoring,and risk management.Research continues to expand and deepen the knowledge in this area;however,it remains a challenging field due to factors such as the complexity of railway systems,the high cost of implementation,and the need for reliable long-term data.
基金supported by the National Natural Science Foundation of China(Grant No.52272427)the Technology Research and Development Program of China National Railway Group(Grant No.K2021T015)Development Plan of China Academy of Railway Sciences Corporation Ltd.(Grant No.2022YJ256)。
文摘The China comprehensive inspection train(CIT)is designed for evaluating railway infrastructure to ensure safe railway operations.The CIT integrates an array of inspection devices,capable of simultaneously assessing railway health condition parameters.The CIT450,representing the second generation,can reach a top speed of 450 km/h with inspection on the infrastructure.This paper begins by outlining the global evolution of inspection trains.It then focuses on the critical technologies underlying the CIT450,which include:(1)real-time inspection data acquisition with spatial and temporal synchronization;(2)intelligent fusion and centralized management of multi-source inspection data,enabling remote supervision of the inspection process;(3)technologies in inspecting track,train–track interaction,catenary,signalling systems,and train operating environment;and(4)AI-driven analysis and correlation of inspection data.The future developmental directions for comprehensive inspection trains are discussed finally.The CIT450’s approach to real-time railway health monitoring can enrich traditional inspection means,operational,and maintenance methods by enhancing inspection efficiency and automating railway maintenance.
