摘要
结合西安地铁1号线环境与设备监控系统(BAS)中采用的可编程逻辑控制(PLC)冗余技术,利用可靠性框图模型和马尔可夫模型分析方法 ,对BAS的可靠性和可用性进行分析,得出了评价系统可靠性和可用性的指标及其计算方法。结果表明,采用PLC冗余技术的西安地铁1号线BAS系统具有较高的可靠性和可用性,可满足地铁运营高可靠性的要求。
Combined with PLC redundancy technology in BAS system on Xi'an metro Line 1, and by usingreliability block diagram and Markov model analysis method, the reli- ability and availability of BAS system are analyzed. On this basis, the indexes related to evaluation reliability and avail- ability and the calculation method are obtained. The result shows that BAS system on Xi'an metro Line 1 where the PLC redundancy technology is adopted has higher reliability and availability, and could meet the high reliability require- mentsin subway operation.
出处
《城市轨道交通研究》
北大核心
2015年第10期75-78,共4页
Urban Mass Transit
关键词
地铁
环境与设备监控系统
可编程逻辑控制
冗余控制
可靠性
可用性
metro
building automation system (BAS)
programmable logic controller(PLC)
redundant control
reliability
availability