Rail transit vehicle-mounted equipment fault propagation monitoring method and system

Abstract

The invention provides a rail transit vehicle-mounted equipment fault propagation monitoring method and system, and belongs to the technical field of rail transit operation control, and the method comprises the steps: employing distributed Hadoop as a data storage and processing platform, and building a vehicle-mounted equipment operation data model; according to the vehicle-mounted equipment operation data model, constructing a vehicle-mounted equipment fault propagation directed graph layering model; the fault influence degree of component nodes and adjacent components is reasonably evaluated in combination with a vehicle-mounted equipment fault propagation directed graph hierarchical model, a fault source is positioned in combination with the vehicle-mounted equipment fault probability, the fault step-by-step diffusion process is simulated, key nodes of each level are identified, and a key fault propagation path is determined. According to the method, a directed graph model, DEMATEL / ISM and FMMEA combination is adopted, the fault propagation and diffusion behavior of the vehicle-mounted equipment is researched from microcosmic to macroscopic and qualitative to quantitative, a fault source is accurately positioned, and an effective fault prevention and control strategy is formulated, so that high-risk faults are specifically eliminated, and the safety and reliability of a railway transportation system are improved.

Description

technical field [0001] The invention relates to the technical field of rail transit operation control, in particular to a method and system for monitoring fault propagation of on-board equipment of rail transit based on digital-analog drive. Background technique [0002] As a large-scale transportation system, rail transit is of great significance to ensure its safety to ensure the safety of people's lives and property. As one of the key technologies with demanding safety features, the on-board equipment of the train operation control system is the core system to ensure the safety of train operation and improve transportation efficiency. Its safe and reliable operation is of great significance to passenger safety, train operation efficiency, and railway economic benefits. . It is of great significance to carry out key technology research on the reliability analysis of rail transit vehicle equipment to provide theoretical and technical support for ensuring the safety of rail...

AI Technical Summary

Problems solved by technology

[0003]At the present stage, in the complex operating environment, when the train is affected by the natural environment or damaged by external forces, equipment failures occur from time to time, and the ambiguity of the internal mechanism of the failure often leads to Unable to quickly locate the fault, and then make it spread and lead to the paralysis of a certain function of the system, affecting train operation and traffic scheduling, thereby greatly reducing operational efficiency and causing serious safety hazards

[0004]The current fault propagation detection work on vehicle equipment is mainly to locate the fault source through the existing fault phenomena of some rail transit vehicle equipment, which is highly dependent on maintenance personnel. Lack of complete failure causes and propagation rules

At the same time, existing fault propagation models describe faults ambiguously

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