Research on the External Device Redundancy Scheme of Onboard Signaling System for High-speed Railways
With the rapid development of high-speed railway in China, the train control system has been able to guarantee sufficient safety, but reliability issue could still seriously restricts the improvement of operational efficiency. So how to quickly and effectively improve system reliability has become a...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Control and Information Technology
2019-01-01
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| Series: | Kongzhi Yu Xinxi Jishu |
| Subjects: | |
| Online Access: | http://ctet.csrzic.com/thesisDetails#10.13889/j.issn.2096-5427.2019.03.015 |
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| Summary: | With the rapid development of high-speed railway in China, the train control system has been able to guarantee sufficient safety, but reliability issue could still seriously restricts the improvement of operational efficiency. So how to quickly and effectively improve system reliability has become a key issue. By modeling and analyzing the reliability of the onboard signaling system, the necessity to implement redundancy scheme of external devices was expounded and two redundancy schemes were proposed that one is configuration-level redundancy and the other is device-level redundancy. According to the research on the functional requirements, working principle, communication interaction and external dependent objects of different types of external device in the onboard signaling system, the applicability of the two schemes was analyzed. Finally, the management strategy of the redundant external devices and the selection strategy of the redundant data by the onboard host unit were introduced to illustrate the feasibility of the schemes. Practical results show the validity of the device redundancy scheme. |
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| ISSN: | 2096-5427 |