基于网络通信的地铁线路相邻联锁站间闭塞技术研究

为保障地铁线路相邻站间的行车安全,文章提出一种基于网络通信的站间闭塞方式。分析了线路相邻联锁站相互发送的信息和闭塞原理,提出通过设置时间戳、序列号、校验码等安全技术实现闭塞故障导向安全的解决方案,设计了冗余网络以增加系统可靠性,并通过延时解决了非预期进路不解锁故障。通过在长沙地铁4号线信号系统的实际应用表明,不同运营场景下该网络闭塞技术实用、有效。

Research on Block between Subway Line Adjacent Interlocking Stations Based on Network Communication

In order to ensure the traffic safety between subway line adjacent stations, a blocking method based on network communication was proposed. The information transformed between the adjacent interlocking stations of the line and blocking principle was introduced. The solution to realize the fail-safe blocking by setting the time stamp, serial number, check code and other safety technologies was analyzed in detail. Redundant network to increase the system reliability was designed. The problem that the unexpected route was not unlocked by delay was solved. The practical application of the signaling system of Changsha metro line 4 show that the network blocking technology was practical and effective in different operation scenarios.