基于RTAI/Linux的变电站微机监控装置实时性能研究  

ON REAL-TIME PERFORMANCE OF MICROCOMPUTER-BASED MONITORING EQUIPMENT FOR ELECTRIC SUBSTATION BASED ON RTAI/LINUX

作　　者：张鹏[1] 陈曾汉[1] 

机构地区：[1]重庆大学电气工程学院高电压与电工新技术教育部重点实验室,重庆400044

出　　处：《计算机应用与软件》2008年第12期207-209,共3页Computer Applications and Software

摘　　要：毫秒级的任务调度时延限制了标准Linux操作系统在电力系统微机监控装置中的应用。分析了操作系统自适应域环境Adeos(Adaptive Domain Environment for Operating System)的中断管道机制,利用实时应用接口RTAI(Real-Time Application Interface)对标准Linux操作系统进行实时扩展,并结合Cirrus Logic公司的基于EP9301处理器(ARM920T)的EDB9301工程开发板,设计了具有强实时性能的变电站微机监控装置。依据实时性将系统任务划分为实时任务部分和非实时任务部分,且实时任务和非实时任务通过管道(FIFOs)通信。测试数据显示,系统实时核上实时任务调度延迟在微秒级,可以满足硬实时的要求。Millisecond scheduler latency time restricts the applications of standard Linux for microcomputer-based monitoring equipments in electric power system. Adoes （Adaptive Domain Environment for Operating System） Interrupt Pipe Mechanism is studied, and the realtime performance of Linux kernel is enhanced by Adoes-based RTAI （Real-Time Application Interface）. Meanwhile,a microcomputer-based monitoring equipment with strong real-time performance for small electric substations on Cirrus Logic EDB9301 Engineering Development Board with EP9301 CPU（ARM920T） is designed. In order to have a good performance, the system tasks are designed into two parts according to real-time property,including real-time tasks and non-real time tasks, and FIFOs are used to transfer data between the real time tasks and non-real time tasks. Tests show that microsecond latency is got from the new real-time kernel and the hard real-time performance is attained.

关 键 词：操作系统自适应域环境 实时应用接口 实时 变电站微机监控装置 

分 类 号：TP316.81[自动化与计算机技术—计算机软件与理论] TM63[自动化与计算机技术—计算机科学与技术]