地铁综合监控系统前置处理器设计

Design of Metro Integrated Supervisory Control System Front End Processor

为解决地铁综合监控系统(ISCS)项目中不同厂商的协议转换、网络隔离及通信实时性的需求,提出一种在ISCS上层应用软件与现场各子系统之间配置通信前置处理器(FEP)的设计方案。首先,分析地铁ISCS的复杂性,从而引出设置通信FEP的必要性;然后,分析了FEP可实现的主要功能,重点论述了FEP软硬件设计方案、系统冗余设计等关键技术要点。通信FEP的使用,有效地提升了ISCS通信的可靠性和数据转发的及时性。目前,该设计方案已经在国内多条城市地铁ISCS中得到应用,并取得了良好的效果。该设计方案也可用在对数据实时性、可靠性要求较高的其他系统集成应用场合中。

To solve the requirements of protocol conversion,network isolation and real-time communication of different vendors in the metro integrated supervisory control system(ISCS)project,a design scheme is proposed to configure the communication front end processor(TEP)between the upper layer application software of ISCS and each sub-system on site.Firstly,the complexity of the integrated metro monitoring application system is analyzed,which leads to the necessity of setting up the communication front end processor.Then,the main functions are analyzed that the FEP can achieve,and focus on the key technical points such as the FEP software and hardware design scheme,system redundancy design,etc.The use of communication FEP effectively improves the reliability of communication and the timeliness of data forwarding of the ISCS.The design has been applied in the ISCS of many metro cities in China and has achieved good results.The design scheme can also be used in other system integration applications that require high data real-time and reliability.