The invention discloses a main and standby switching method of a safe computer platform with a double 2-vote-2 structure. The method is a method for judging the working state of a system by integrating known detection faults in double systems. Data transmission is carried out between railway signal devices through communication modes such as Ethernet and a CAN bus, and the communication state between systems is one of important factors for determining main and standby switching. Due to the fact that redundant structures, communication modes and controlled devices of all systems are different, main-standby switching is disordered or low in efficiency. The invention provides a safe computer platform main and standby switching method based on a double two-out-of-two structure on the basis of the on-off state of a communication object, and on the basis of the communication state of a known safe computer platform and an external communication object, according to the factors such as the redundant structure, the communication mode and the control equipment type of the communication object, the communication state of the communication object is determined. According to the invention, the main/standby switching of the safe computer platform with the double 2-vote-2 structure is realized, the mistaken switching is avoided, and the system reliability is improved while the system safety is ensured.
二乘二取二结构的安全计算机平台的主备切换方法是综合双套系统中的已知检测故障对系统工作状态进行判决的方法。铁路信号设备之间是通过以太网、CAN总线等通信方式进行数据传递,各系统间的通信状态是决定主备切换的重要因素之一。由于各系统的冗余结构、通信方式、所控制设备不尽相同,主备切换存在紊乱或效率低下的问题。本发明提出了一种在通信对象通断状态的基础上,基于二乘二取二结构的安全计算机平台主备切换方法,在已知安全计算机平台与对外通信对象的通信状态的基础上,根据通信对象的冗余结构、通信方式、控制设备类型等因素,实现了二乘二取二结构的安全计算机平台的主备切换,避免误倒机,在保证系统安全性的同时,提高系统的可靠性。
Main and standby switching method for double 2-vote-2 security computer platform based on communication object state judgment
一种基于通信对象状态判断的二乘二取二安全计算机平台主备切换方法
2023-03-21
Patent
Elektronische Ressource
Chinesisch
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