Research on Failure Processing of Axle Counter in CBTC System
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 10
Abstract
Objective The communication-based train control (CBTC) system usually uses the axle counter to provide train auxiliary positioning functions. However, in the case of axle counter failure, if it is always processed as "occupied", the system operating efficiency will be significantly affected; while if it is chosen to be processed as "idle" when there is no vehicle in reality, this processing method should not reduce the system safety. So it is necessary to research how to process axle counter faults in CBTC system. Method Based on the requirements of IEEE 1474 series international standards and CZJS/T 0033—2015 Interface Specification of Communication Based Train Control System for Urban Rail Transit-Interface Specification for Interoperability-General System Requirements for Interoperability, the state processing of the axle counter section inside the CBTC system is analyzed, and the state machine model of the axle counter section inside the CBTC system is proposed, and the method of processing the axle counter fault report occupancy inside the CBTC system is given. At the same time, the feasibility of CBTC system directly resetting a fault occupied axle counter section which is actually idle is discussed, and two methods for improving the availability of the axle counter system are compared. Result & Conclusion The IEEE 1474 series standards do not require axle counter system configured in CBTC system as mandatory. However, considering the degradation mode of CBTC systems, axle counters are usually equipped in CBTC systems. When the axle counter system is in fault and permanently reports occupancy, such processing methods can be used: manual reset to clear the axle counter fault, CBTC processing to enable the CBTC trains to operate normally, and configuring an axle counter supervisory section to avoid single axle counter section failure impact.
Authors and Affiliations
Binghao WU, Junchao DONG, Zhaoyang QIU, Yangxi CHEN
Keywords
Related Articles
- EP ID EP749241
- DOI 10.16037/j.1007-869x.2024.10.038
- Views 31
- Downloads 0
Maintenance Strategy Optimization of Urban Rail Transit OCS Based on Intelligent Operation and Maintenance
Objective With the development of the intelligence technology and the building of intelligent operation and maintenance platform for urban rail transit overhead catenary/collector system （OCS）, the operation and mainte...
Research on Engineering Acceptance Measures and Safety Evaluation Schemes of City Railway New Projects in Shanghai
Objective Several projects of city railway in Shanghai are currently under construction. However, there are no well-defined engineering acceptance and safety evaluation management measures for new city railway projects a...
Influence of Urban Rail Transit Carbody Vertical Vibration on Pantograph-catenary Current Collection Performance
Objective Most existing studies on catenary system dynamics simulation are based on the assumption that the pantograph base has only longitudinal degrees of freedom, neglecting the influence of carbody vertical vibration...
Construction and Application of Index System for Safety Effectiveness Evaluation of Urban Rail Transit Line Maintenance Construction
Objective At present, there are relatively few studies on the safety assessment of maintenance and construction of urban rail transit operation lines. In order to reduce the operation safety risk of urban rail transit li...
Prediction of Land Subsidence Caused by Shield Tunnel Construction with Joint CNN-LSTM Neural Network
Objective Metro shield tunnel construction may cause surrounding land subsidence, affecting the surrounding environment. Traditional land subsidence prediction models are difficult to comprehensively consider the influen...