城市轨道交通主用与备用车载控制器冗余切换方案研究

主用与备用车载控制器(VOBC)的冗余是保证城市轨道交通信号系统可用性的重要技术措施,而实现冗余的方案各不相同。分析了一种主用与备用VOBC冗余方案的切换过程、实现原理、实现电路、安全分析以及应用案例。该解决方案从市场需求出发,实现了VOBC所有设备包括外部设备等的完全冗余,解决了无扰切换等技术难题。

Research on Main Use and Reserve VOBC Head to Tail Redundancy Switching Scheme

The main use and reserve head to tail redundancy of VOBC is an important technical measure to ensure the availability of signal system,but the implementation schemes are various. In this paper,the switching process, implementation principle, implementation circuit,security analysis and applica-tion case of a VOBC redundancy scheme are analyzed. The solution realizes complete redundancy including all the head to tail devices according to market demands,solves the technical problems such as non-interference switching and so on.