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Based on Autonomous Decentralized Train Dispatching System

Author: ChaiHuiJun
Tutor: TanYongDong
School: Southwest Jiaotong University
Course: Rail transportation electrification and automation
Keywords: Autonomous Decentralized Dispatch Virtual Private Network Virtual LAN
CLC: U284.59
Type: Master's thesis
Year: 2010
Downloads: 208
Quote: 1
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Abstract


As the train speed and density increase, the train dispatching system (Train Dispatching and Controlling System, TDCS) to become the whole railway system to the orderly operation of the core. TDCS by the Ministry of Railways, Railway Bureau and grass-roots network of three stations, is a typical hierarchical distributed systems, covering the whole country as a large and complex control system, its online maintenance, online expansion, and online testing requirements become more stringent. Autonomous Decentralized Systems (Autonomous Decentralized Systems, ADS) technology has a better online maintenance, online expansion, online testing and other functions. 2003 Autonomous Decentralized Protocol (Autonomous Decentralized Protocol, ADP) to become an international ISO standards (ISO15745-4), a standardized protocol makes use of autonomous decentralized technology to build distributed systems become a mainstream trend. Refer to our existing decentralized autonomous centralized dispatching system, the use of technology to build autonomous decentralized autonomous decentralized system based TDCS, information centralized, decentralized control, and has good online features TDCS system is the subject of this idea. Applications in the system, through the TDCS interactive information system and other types of systems, the system partition type of the multicast group, the communication optimization information. Meanwhile, the analysis TDCS system structure, the whole system is divided into different levels TDCS data fields and different application modules, create self-dispersion type TDCS model. This article will be consolidated Dispatching System (Traffic Management Information System, TMIS) and in accordance with ADS heterogeneous TDCS gateway model, heterogeneous system expansion. This extension method solves TDCS systems and information exchange between TMIS, while achieving the information system and control system isolation, reducing the interaction between different information. For frequent TDCS Station Terminal Expansion grassroots problems caused by building virtual local area network (VLAN), the TDCS terminal extension confined within the VLAN, reducing the impact on the system level. The use of VLAN provides firewall mechanisms and management processes, to prevent excessive switching network broadcasting and improve network performance purposes. Autonomous decentralized system in accordance with the concept of multi-wave group will each VLAN TDCS system data as a bureau-level domain for a multicast group, you can perform different types of information processing and management. Finally, TDCS system through network management problems, propose solutions and experimental verification of the system through an online extension properties.

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CLC: > Transportation > Rail transport > Railway communication,signal > Railway signal > Turnout and signal remote control, remote ( CTC ) > Computer-aided dispatch concentration, traffic dispatching automation
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