Two-out-of-three Safety-critical Computer System
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摘要: 介绍一种用于铁路车载控制设备的三取二安全计算机系统。该计算机系统由3套相同的子系统构成,采用冗余容错技术并利用VxWorks实时操作系统和软件进行开发。三系冗余容错系统的特点是对单系故障具有屏蔽作用,体现在控制过程中就是控制的连续性和故障后的无缝切换,这是选择三系的主要动机。Abstract: This article introduced a two-out-of-three Safety-critical Computer System which was used in on-board equipment of railway transport. The System consisted of three same subsystems, was developed with fault-tolerant technology and the VxWorks real-time operating system. The characteristic of three series redundant fault-tolerant system is the shielding effect to the single line fault, reflects the continuity in the control process and seamless handover after breakdown.
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Keywords:
- two-out-of-three /
- security /
- redundant system /
- tolerance of failure
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