The pantograph transfers electric energy from the catenary to high-speed trains and is critical for electrified railways.However,excessive motion can cause pantograph-catenary malfunctions,including catenary breaks,ar...The pantograph transfers electric energy from the catenary to high-speed trains and is critical for electrified railways.However,excessive motion can cause pantograph-catenary malfunctions,including catenary breaks,arcing,and mechanical damage to the pantograph.Therefore,detecting pantograph head motion is crucial for reliable high-speed train operation.This paper employs an improved Siamese network to measure its horizontal/vertical displacement and estimate the dynamic envelope.A multi-branch Siamese network is also developed to extract displacements of multiple targets for stagger value estimation.Additionally,the proposed MOTFSE algorithm(Multi-Object Tracking and Optical Flow Speed Estimation)fuses tracking and optical flow results to estimate the vertical vibration speed.Experimental results show the proposed algorithm achieves over 90%tracking accuracy and precision for the pantograph head.It enables accurate measurement of the pantograph's dynamic envelope,contact wire stagger value,and head vertical oscillation velocity,offering a viable solution for practical application.展开更多
基金supported in part by the Open Fund of the Key State Laboratory of High-Speed Maglev Transportation Technology under grant number SKLM-SFCF-2024-004in part by the Frontiers Science Center for Smart High-speed Railway System under grant number 2022JBQY007。
文摘The pantograph transfers electric energy from the catenary to high-speed trains and is critical for electrified railways.However,excessive motion can cause pantograph-catenary malfunctions,including catenary breaks,arcing,and mechanical damage to the pantograph.Therefore,detecting pantograph head motion is crucial for reliable high-speed train operation.This paper employs an improved Siamese network to measure its horizontal/vertical displacement and estimate the dynamic envelope.A multi-branch Siamese network is also developed to extract displacements of multiple targets for stagger value estimation.Additionally,the proposed MOTFSE algorithm(Multi-Object Tracking and Optical Flow Speed Estimation)fuses tracking and optical flow results to estimate the vertical vibration speed.Experimental results show the proposed algorithm achieves over 90%tracking accuracy and precision for the pantograph head.It enables accurate measurement of the pantograph's dynamic envelope,contact wire stagger value,and head vertical oscillation velocity,offering a viable solution for practical application.
