Optimization of Urban Rail Transit Signaling System Functions Based on Alternate Day Depot Return Operation Mode
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 11
Abstract
Objective In the alternate day depot return operation mode, trains either stay overnight on the mainline or run continuously day and night. The relevant functions of existing urban rail transit signaling system can no longer meet the requirements, therefore needing an optimization. Method Starting with an analysis of the functional optimization needs of signaling system, the optimization scenarios and contents for the on-board ATC (automatic train control) subsystem, the trackside ATC subsystem, the ATS (automatic train supervision) subsystem, and the signaling equipment self-inspection/monitoring are elaborated in detail. Result & Conclusion For the alternate day depot return operation mode, the on-board ATC subsystem is enhanced with train position memory function, allowing overnight trains on the mainline to start directly upon powered on in the controlled mode of signaling system. By adjusting buffer zone settings, the convergence protection envelope is optimized for non-communication trains staying overnight on the mainline, to avoid impacting the operation of other mainline trains. The optimized ATS subsystem supports both the automatic schedule matching after online timetable changes and the cross-day operation schedules. The functional optimization of signaling equipment self-inspection work enables the extension of signaling system equipment self-inspection or reboot cycle, meeting the requirements for long-term continuous operation. The series of signaling system functional optimizations enhance the availability of signaling systems and improve the service levels.
Authors and Affiliations
Juan CHAI
Keywords
Related Articles
- EP ID EP751176
- DOI 10.16037/j.1007-869x.2024.11.003
- Views 50
- Downloads 0
Impact Simulation Analysis of Wind Resistance Brakes on High-speed Train Aerodynamic Performance under Crosswind Conditions
Objective As the train operational speed increases, various braking methods become essential for ensuring high-speed train emergency safety braking. Wind resistance brakes, which complement wheel-rail adhesion brakes, ha...
Influence Mechanism of Kunming Metro Station Built Environment on Passenger Flow Based on the Comparison between Working Days and Rest Days
［Objective］ In order to study the influence mechanism of metro station built environment on the passenger flow of the station, taking metro stations in Kunming city as the example, the influence mechanism of station bu...
Stability Measurement of Metro Passenger Travel Patterns Based on Information Entropy Model
［Objective］ It is aimed to more accurately measure the individual travel pattern stability of urban rail transit passengers, improve travel prediction accuracy, and address bias issues in existing information entropy m...
Planning Scheme of Shenzhen Airport East Comprehensive Transportation Hub for Air-Rail Intermodal Integration
Objective In recent years, China actively promotes the development of air-rail intermodal transportation. However, as a complex system with aviation and high-speed rail two major external transportation modes meeting, th...
Simulation Analysis of Passenger Evacuation and Rescue in Straddle Monorail Transit Intervals
Objective Due to the unique characteristics of straddle monorail transit system, evacuation and rescue forms on its elevated lines differ from conventional urban rail transit. Therefore, it is necessary to conduct an in-...