| 面向安全关键嵌入式系统的时钟同步设计 |
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| 引用本文： | 李翔,吴向阳,张激.面向安全关键嵌入式系统的时钟同步设计[J].计算机系统应用,2017,26(6):77-82. |
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| 作者姓名： | 李翔 吴向阳 张激 |
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| 作者单位： | 中国电子科技集团公司 第三十二研究所, 上海 201801,中国电子科技集团公司 第三十二研究所, 上海 201801,中国电子科技集团公司 第三十二研究所, 上海 201801 |
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| 摘 要： | 为了满足安全关键性实时嵌入式系统对实时行为正确性和确定性的要求，本文应用ETSEC网络控制器的硬件时间戳特性， ReWorks嵌入式实时操作系统的实时特性，结合IEEE 1588精密度时钟同步协议，设计并实现了一个面向安全关键性领域的时钟同步系统原型.其同步精度达到100纳秒以内，并通过软件插桩测试和验证了该时钟同步系统的正确性和精度.
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| 关 键 词： | 时钟同步 安全关键性 IEEE 1588 实时嵌入式系统 |
| 收稿时间： | 2016/9/25 0:00:00 |
| 修稿时间： | 2016/11/17 0:00:00 |
Design of Clock Synchronization System for Security Critical Embedded System |
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| LI Xiang,WU Xiang-Yang and ZHANG Ji.Design of Clock Synchronization System for Security Critical Embedded System[J].Computer Systems& Applications,2017,26(6):77-82. |
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| Authors: | LI Xiang WU Xiang-Yang and ZHANG Ji |
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| Affiliation: | The 32 nd Research Institute of China Electronics Technology Group Corporation, Shanghai 201801, China,The 32 nd Research Institute of China Electronics Technology Group Corporation, Shanghai 201801, China and The 32 nd Research Institute of China Electronics Technology Group Corporation, Shanghai 201801, China |
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| Abstract: | In order to meet the requirements of real-time behavior correctness and certainty of safety critical real-time embedded system, the paper shows a design and implementation of clock synchronization system with hardware timestamp characteristics of the of ETSEC Ethernet device controller. The real-time embedded operating system ReWorks and IEEE 1588 precision clock synchronization protocol is adopted for the implementation. The synchronization accuracy is less than 100 ns, and the accuracy and precision of the clock synchronization system are tested and verified. |
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| Keywords: | clock synchronization safety critical IEEE1588 real-time embedded OS |
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