为了更好地满足城市轨道交通互联互通对信号领域安全通信的要求，将具有数据吞吐量大、传输时间确定、故障隔离严格、容错性好等特点的ARINC659总线用于城市轨道交通信号控制系统领域。提出了一种基于ARINC659总线技术的二乘二取二安全通信计算机平台的方案，用以实现ZC平台的对外通信功能和安全通信协议运算功能。设计其软硬件结构、用户软件和总线间线程的通信序列，并对数据的冗余处理和安全协议运算等关键功能进行研究，以满足系统高安全性、高可靠性和高实时性通信的需求。

To better meet the demands of urban rail transit interconnection on safety communications in the signal field, the ARINC659 bus is used in urban rail transit signal control systems. The advantages of the bus technology include large data throughput, definite transmission time, strict fault isolation, and high fault tolerance. In this study, a scheme of a double 2-vote-2 safety communication computer platform based on the ARINC659 bus technology is proposed to realize the external communication and safety communication protocol operation functions of the ZC platform. By appropriately designing the software and hardware structures, communication sequence of user software and threads between buses, as well as the research of key functions, including data redundancy processing and safety protocol operation, the system can meet the requirements of high safety, reliability, and real-time communication.

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