摘要
城市轨道交通车载运控系统是信号系统整体架构中保证列车运行安全,实现行车指挥和列车运行现代化,提高运输效率的关键系统设备;而其主控制单元(MPU)作为控制该系统内多个子系统的核心部件,需通过引入多重硬件冗余技术以确保系统的可靠性及安全性,因此在其硬件设计过程中需要引入可实现各冗余模块在时间上严格协同工作的同步机制。基于上述背景,提出一种应用于轨道交通车载运控系统MPU的硬件同步机制,可实现三模块冗余硬件设计架构下各判决模块间时间同步,并通过对该方法实现过程的讨论及其硬件兼容性等问题的分析,并测试了该方法的实际效果。
Urban rail transit vehicle operation and control system is a key system equipment to realize the modernization of traffic control and train operation,and improve transport efficiency.Its main processing unit（MPU）,which is the core unit of the multiple subsystems of the control system,need to introduce multiple hardware redundancy in order to ensure the system reliability and security,so the synchronization mechanism should be introduced to ensure the collaborative work of all redundant modules in the hardware design process.Based on the above background,this paper presents a hardware synchronization mechanism used in rail transit vehicle operation and control system main processing unit（MPU）,which can achieve the time synchronization of all the three redundant modules.Furthermore,the effectiveness of this mechanism is also verified by analyzing the design architecture,and tests the practical effect of this method.
出处
《电子测量技术》
2013年第8期93-98,共6页
Electronic Measurement Technology
基金
上海市科委科研计划(10511500306)项目资助
关键词
轨道交通
安全计算机
车载主控制单元
三取二结构
硬件同步
FPGA
rail transit
vital computer
on-board operation and control system
2out of 3structure
hardware synchronization
field programmable gate array
