Citation

Huang S, Wen T, Li K, Wang L, Feng H, Cai B. China Saf. Sci. J. 2022; 32(12): 110-117.

Copyright

(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2022.12.2590

PMID

unavailable

Abstract

In order to further improve the operation efficiency of the signal system, a decentralized train line resource negotiation method based on TACS was proposed. From the perspective of system structure, the network modularity of the centralized system and decentralized system was compared. It was proved that the decentralized system structure had high stability and was more suitable for system network structure of multi-agent system cooperative control. Based on Raft consensus mechanism in blockchain technology, the principle of train node state transition of the decentralized TACS system was designed to descreibe two specific scenarios of campaign leader train and leader train handover. The performance test was carried out by means of virtual machine and port mapping, and the relationship between campaign success probability, campaign cycle and timeout critical value was summarized. Combined with the test results and industry standards, the suggestion of setting the vehicle communication timeout critical value in TACS in 50-100 ms was given. The results show that this multi-train resource negotiation driven by Raft consensus mechanism can improve the operation efficiency of train control system and reduce the time dependence on communication system. © 2022 China Safety Science Journal. All rights reserved.

Language: zh