电子科技大学学报2017，Vol.46Issue(3)：631-635,5.DOI:10.3969/j.issn.1001-0548.2017.03.025
时间/事件触发的安全关键系统调度研究
Study on Scheduling Mechanism in Time-Triggered and Event-Triggered Safety Critical System
摘要
Abstract
For most real-time operating systems,only the event-triggered mechanism is supported.This paper proposes a scheduling mechanism which can support not only time-triggered but also event-triggered tasks in μC/OS-II.For safety critical tasks in this embedded system,a simple and easy scheduling algorithm is also presented based on criticality degree based priority (CDBP).This algorithm ensures the execution of the emergency tasks at a low level and the execution of the higher critical tasks at the high level while reducing the unnecessary task switching overhead.Experimental results show that the proposed algorithm is better than own criticality based priority(OCBP) algorithm in improving the system efficiency and provides better support for the criticality tasks and emergency tasks.关键词
嵌入式系统/事件触发/混合关键/调度算法/时间触发Key words
embedded system/event-triggered/mixed-criticality/scheduling algorithm/time-triggered分类
信息技术与安全科学引用本文复制引用
黄姝娟,刘白林,张雅,茹媛..时间/事件触发的安全关键系统调度研究[J].电子科技大学学报,2017,46(3):631-635,5.基金项目
陕西省工业科技攻关项目(2015GY031) （2015GY031）
