嵌入式Linux的实时化改造及其在故障录波器中的应用

TONG Xiaoyang; HOU Feng

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嵌入式Linux的实时化改造及其在故障录波器中的应用

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- 嵌入式Linux的实时化改造及其在故障录波器中的应用
- Automation of Electric Power Systems Vol. 35, Issue 9, Pages: 82-85(2011)
- 作者机构：
  
  1. 西南交通大学电气工程学院,四川省,成都市,610031
  2. 中国中铁二院工程集团有限责任公司,四川省,成都市,610031
- 作者简介：
- 基金信息：
- DOI：
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- Published：2011
- 稿件说明：
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TONG Xiaoyang, HOU Feng. [J]. Automation of electric power systems, 2011, 35(9): 82-85.
DOI：

TONG Xiaoyang, HOU Feng. [J]. Automation of electric power systems, 2011, 35(9): 82-85. DOI：

摘要

提出一种基于普通内核+RTLinux+抢占内核补丁的三核Linux实时化改造方案，并将其应用于故障录波器。研究了该三核操作系统的工作原理，采用双缓存技术提高前后台之间通信的实时性。运用Stress-Kernel RPM包和Amlat软件测试了该嵌入式Linux的实时性能，最大实时响应时间为1.2 ms，99.999%的中断响应时间都小于1 ms。仿真测试结果表明该三核Linux平台能满足故障录波的实时性处理要求。

Abstract

A three-nucleus real-time improvement scheme based on the normal core+ RTLinux patch+ kernel preemption patches is proposed for its application in the fault recorder. The operation principle of three-nucleus Linux is described. The key technology of double buffer is designed to improve the real-time performance of recording data transmission. The testing software of Stress-Kernel RPM package and Amlat are used to test the new platform. The real-time maximum response of three-nucleus platform is 1.2 ms， while 99.999% of the interrupts are lower than 1 ms. Test results show that the three-nucleus Linux platform can satisfy the real-time processing requirement of the fault recorder.

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