| 列车超速防护系统中主机自诊断方法 |
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| 引用本文： | 赵明,汪希时.列车超速防护系统中主机自诊断方法[J].北京交通大学学报(自然科学版),1993(Z1). |
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| 作者姓名： | 赵明 汪希时 |
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| 作者单位： | 北方交通大学运输自动化科学技术研究所，北方交通大学运输自动化科学技术研究所 |
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| 摘 要： | 分析了 CPU,ROM,RAM 的几种故障检测方法,针对列车超速防护系统主机工作的特点,实现了系统开机时完备的主机功能级自诊断(包括关键 I/O 口)和工作中短时问的周期自检.利用主机中双 CPU 工作的特点,通过双口 RAM 通道,完成双机互检.能监视程序执行行为特征,发现单 CPU 故障或程序跑飞,并对 CPU 的执行结果进行合理性检测,提高了整个系统的故障检测覆盖率.还对故障检测覆盖平及检测代价做了评估.
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| 关 键 词： | 故障诊断 诊断程序 系统自诊断 功能测试 互检/列车超速防护系统 |
A Self-diagnosis Method for Main-board of Auto Train-speed Protection System |
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| Zhao Ming,Wang Xishi Automation Research Institute of Transportation Science and Technology.A Self-diagnosis Method for Main-board of Auto Train-speed Protection System[J].JOURNAL OF BEIJING JIAOTONG UNIVERSITY,1993(Z1). |
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| Authors: | Zhao Ming Wang Xishi Automation Research Institute of Transportation Science and Technology |
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| Institution: | Zhao Ming;Wang Xishi Automation Research Institute of Transportation Science and Technology |
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| Abstract: | This paper analyzcs the functional testing methods for CPU,ROM and RAM.In light of the operation characteristic of the ATP system,the proposed method can perform a total functional self-diagnosis to the main-board at the beginning of system starting and a short period self-testing during sys- tem operation.As there are two microprocessors on the main-board,the mutual checking can be performed by means of monitoring program behavior. The checking results are reasonable,the range of error testing coverage is ex- tended. |
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| Keywords: | trouble shooting diagnosis program system level self-diagnosis functional testing mutual checking/auto train-speed protection system |
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