A safety-related transmission method for a new railway signalling system based on an IP-Network
A safety-related transmission method for a new railway signalling system based on an IP-Network
复制标题
一种基于IP网络的新型铁路信号系统安全相关传输方法
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
M. Matsumoto
中科院分区：
文献类型：
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作者：
M. Endo;T. Okada;D. Watanabe;K. Aimi;T. Kunifuji;M. Matsumoto
本文开发了一种通过IP网络控制信号设备的信令系统。该系统由逻辑控制器(LC)和现场控制器(FCS)通过光缆连接而成。LC是位于信号室的与安全相关的装置。LC生成命令数据，并通过IP网络将数据传输到FCS。FC是配备在每个信号设备中的安全相关设备，并且基于来自LC的命令数据来控制设备。在铁路信号系统中，对安全性和可靠性要求很高。在该系统中，传输设备和协议都是基于通用技术的。因此，我们需要承担传输设备上的各种错误，即使发生最严重的错误，整个系统也必须保持自己的安全状态。为了符合IEC62280-1标准，我们制定了安全传输协议。此外，该系统需要运行20年而不会出现系统故障。文中定义了各设备故障率小于10-7/h的目标，并测量了传输设备的流量限制，以验证LC和FC之间传输的可靠性，证实了传输设备的流量远小于传输设备的流量限制。本文结合原型系统对该系统的安全性和可靠性进行了评估，并于2007年2月在武藏野线池川站投入实际使用。
This paper developed a signaling system which controls signal devices through an IP-Network. This system consists of a Logic Controller (LC) and Field Controllers (FCs) connected with optical cable. The LC is a safety-related device located at the signal house. The LC generates the command data, and transmits the data to the FCs through IP-Network. The FC is a safety-related device equipped in each signal device, and controls the device based on the command data from the LC. In the railway signaling system, high level of safety and reliability are required. In this system, the transmission devices and protocol are based on the general technologies. Therefore, we need to assume all kinds of errors on the transmission devices, and the whole system must keep itself in safe status even if the worst error occurs. In order to comply with the IEC62280-1, we have developed a safety transmission protocol. Moreover, this system needs to operate for 20 years without system down. The paper defined the target of the failure rate of each device less than 10-7/h. The paper measured the traffic limitation in order to validate the reliability about the transmission between the LC and the FC, and confirmed that the traffic is much less than the traffic limitation of the transmission device. The paper have evaluated the safety and reliability of this system with prototype system, and put this system into practical use at the Ichikawaono station on the Musashino line in February 2007.