视景仿真技术被广泛应用于模拟驾驶以及列车运行场景的展示与测试.其生动的画面能够清楚地展示城市轨道交通信号系统的工作原理与列车运行的工作场景.然而,在虚拟线路环境中,信号系统的搭建与联锁关系的设置比较繁琐,灵活度低,难以重复使用.通过对信号机底层状态显示与控制逻辑脚本的改写,并对信号设备创建相关扩展接口,使得虚拟线路场景的信号设备能够被外部系统如列车自动监控系统或车站联锁系统控制,极大地提升了仿真场景的真实性和多样性.%Visual simulation technology is widely used in train driving simulation and train operating scene display,it can show the working principle and condition of rail transit signal system with vivid images. However, in the virtual envi-ronment,the setting up of signal system with interlocking rela-tion is complicated,less flexibile and limited by the single use. In this paper,by rewriting the underlying script and creating external interface,the external system like ATS or interlocking system could control the signal facilities in the virtual environ-ment,thus greatly improve the authenticity and diversity of the simulation scenes.
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