摘要
计算机技术在轨道交通信号系统中的应用改变了传统的基于继电器的控制方式,在缩短行车间隔,提高运营效率的同时,也对系统的安全性提出了更高的要求。结合EN 50126—2标准,阐述了安全论证的原则和策略,分析了主要使用的安全论证方法。给出基于信号系统生命周期不同阶段的安全论证内容,并结合论证策略和方法,给出不同阶段安全论证的建议,以保证信号系统高度的安全性,充分利用资源,节省生命周期成本。
The application of computer technology in rail transit signaling system has changed the traditional relay-based control. While the running interval is shortened and operational efficiency raised, safety requirements for the system itself have be come more critical. This paper, based on the European Standard En50126-2, analyzes the funda-mentals and the strategies of safety demonstration, and the adopted methods, then presents the contents of safety dem- onstration in different phases in the system lifecycle. Based upon the strategies and methods, this paper gives advices for safety demonstration of different kinds of signaling systems to assure the system safety with the possible limited resources and low lifecycle cost.
出处
《城市轨道交通研究》
北大核心
2009年第2期21-25,共5页
Urban Mass Transit
关键词
轨道交通
信号系统
安全论证
生命周期
rail transit
signaling system
safety demon-stration
lifecycle
