基于VxWorks嵌入式系统下的实时性研究  

Research of Real-time Performance Based on VxWorks Embedded System

作　　者：刘大明[1] 李海明[1] 

机构地区：[1]上海电力学院,上海200090

出　　处：《核电子学与探测技术》2011年第2期139-142,156,共5页Nuclear Electronics & Detection Technology

摘　　要：进行EAST装置的离子回旋加热系统机理和加热效率等物理研究,需要高性能实时采集系统。通过系统逻辑分析仪、SPY及其他相应软件对基于VxWorks嵌入式系统进行了实时性测试,给出了相应系统下实时性的数据。系统实时性要做到时间与处理器空闲空间的平衡,需要高速的实时数据采集,尽量减少外部对系统的干扰,保证系统工作在自己设定的调度轨迹中运行。中断的切换时间及任务上下文切换时间满足了系统的要求。In the research of mechanism and heating efficiency of Ion Cyclotron Range of Frequency（ICRF） heating,data acquisition system with high real-time performance needed.By the means of system logic analyzer, SPY and other relevant software on VxWorks embedded operating system for real-time testing gives real-time data of the system.Real-time level to achieve balances used time and processor idle time,real-time data acquisition,and minimize the interference of external to the system,ensure the system work in its own set of scheduling trajectory.Interrupt switching time and task context switching time meet the system requirements.

关 键 词：嵌入式系统 VXWORKS 实时性 

分 类 号：TP316.2[自动化与计算机技术—计算机软件与理论]