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苛求，本文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[1][2]的ARINC659总线用于城市轨道交通信号控制系统领域。本文提出了一种基于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。通过设计其软硬件结构、用户软件和总线间线程的通信序列，以及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。

In order to better meet the demands of urban rail transit interconnection on safety communication in signal field, ARINC659 bus, which has advantages including large data throughput, definite transmission time, strict fault isolation and high fault tolerance, is used in the field of urban rail transit signal control system. This paper presents a scheme of 2oo2×2 safety communication computer platform based on ARINC659 bus technology to realize the external communication function and safety communication protocol operation function of ZC platform. By designing its software and hardware structure, the 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, high reliability and high real-time communication.

(J2021G006)