Open AccessDesign of system-level hot standby redundancy-based signal system
Author(s) -
Yu Zhang,
Xiaoyong Wang,
Yi Yu,
Pengzi Chu,
Ye Xu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2010/1/012090
Subject(s) - redundancy (engineering) , signal (programming language) , control system , computer science , communications system , embedded system , computer hardware , engineering , real time computing , electrical engineering , telecommunications , operating system , programming language
Focusing on the improvement of the availability for signal systems, a system-level heterogeneous hot standby redundancy-based signal system is discussed. The system includes a communication-based train control system (CBTC), a track circuit-based train control system (TBTC), and a switching unit. The CBTC and TBTC are respectively connected to the communication system via the switching unit. Under normal condition, the CBTC is connected to the communication system via the switching unit, and the function commands received by the train come from the CBTC. When the CBTC fails, the TBTC is connected to the communication system via the switching unit, and the function commands received by the train come from the TBTC. The switch between the CBTC and the TBTC is automatically executed by the system. Simulation results showed that the proposed design in this paper improved the availability of the signal system and reduced the impact of failures on operations.