由于客运专线列车运行速度较高,则要求作为重要安全系统的车站联锁设备具有较高的安全性和可靠性,由于速度的提高,系统处理的信息量也大量增加。传统的继电器集中联锁具有一定的局限,因此在客运专线联锁系统制式选择中不予考虑。而随着容错技术的发展,选择了高可靠性的专用安全型计算机系统。现有双机热备、三取二、二乘二取二等高级别冗余。本文重点对二乘二取二制式提出了两种设计方案进行研究,对第二种方案进行了深入的分析,表明更适合客运专线运营对可靠性和安全性的需求。 Because of the high running speed of passenger dedicated trains, the station interlocking equipment that is an important safety system is required to have high safety and reliability. As the speed increases, the amount of information processed by the system also increases greatly. The traditional relay has some limitations, so it is not taken into consideration in the choice of passenger-dedicated line interlocking system. With the development of fault-tolerant technology, a dedicated and secure computer system with high reliability has been selected. The existing hot dual standby, three take two, two take two high-level redundancy. This article focuses on the two-two-two-two proposed design of two programs to conduct a thorough analysis of the second option, indicating that more suitable for the operation of passenger dedicated line reliability and security needs.