南京地铁ACC安全密钥系统概论

Concepts of ACC Security Key System in Nanjing Metro

本文通过对南京地铁ACC安全密钥系统功能定义和系统设计的描述．提供了一个实际应用的系统架构，并对架构中的子系统模块功能进行了定义，并阐述了系统的设计目标、设计思路。地铁ACC安全密钥系统的实现统一了线路AFC系统的安全接入，是地铁线网AFC系统发展的重要基石。

This paper provides a practical system architecture based on the description of function definition and design of ACC security key system in Nanjing Metro, it also defines the functions of the subsystem modules in the architecture, and represents the design target and ideas of the system. The realization of metro ACC security key system unifies the secure access of the line AFC system, which is the important foundation for the development of metro AFC system.