| 高可靠性的嵌入式软件现场更新方法 |
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| 引用本文： | 李权,鄢萍,贺晓辉.高可靠性的嵌入式软件现场更新方法[J].计算机应用,2010,30(8):2228-2231. |
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| 作者姓名： | 李权 鄢萍 贺晓辉 |
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| 作者单位： | 1. 重庆大学机械传动国家重点实验室2. 机械传动国家重点实验室3. |
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| 基金项目： | 教育部新世纪优秀人才支持计划项目，重庆市自然科学基金资助项目，重庆市重大科技攻关项目 |
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| 摘 要： | 针对传统嵌入式软件更新方法的不足，提出了一种高可靠性的嵌入式软件现场更新方法，通过读取SD卡上的更新文件来更新嵌入式设备的Flash分区，从而实现设备软件的更新。该方法在保证快速更新功能的前提下，采用更新文件兼容性避错检测、双Bootloader设计、更新文件验证及软件异常处理机制，有效提高了软件的避错、容错性能。通过Nelson模型可靠性评估及其在产品中的应用，证明该更新方法具有高可靠性。
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| 关 键 词： | 嵌入式软件 现场更新 避错容错 可靠性评估 |
| 收稿时间： | 2010-01-21 |
| 修稿时间： | 2010-03-10 |
New update method with high-reliability for embedded system software |
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| LI Quan,YAN Ping,HE Xiao-hui.New update method with high-reliability for embedded system software[J].journal of Computer Applications,2010,30(8):2228-2231. |
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| Authors: | LI Quan YAN Ping HE Xiao-hui |
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| Abstract: | Concerning the shortages of traditional embedded software updates, a new on-site update method with high-reliability was proposed, which achieved embedded system software updating by copying update files from a SD card to the flash partitions of the embedded device. On condition of fast update, the compatibility detection of update files for fault-avoidance, the double-Bootloader design, the test and verification of the update files, and the exception handling mechanism were adopted to effectively improve fault-avoidance and fault-tolerance properties of the software. The high reliability of this method is proved through the reliability assessment based on the Nelson model and the application in the product. |
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| Keywords: | embedded system software on-site update fault-avoidance and fault-tolerance reliability assessment |
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