Design and reliability, availability, maintainability, and safety analysis of a high availability quadruple vital computer system |
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| Authors: | Ping Tan Wei-ting He Jia Lin Hong-ming Zhao and Jian Chu |
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| Institution: | (1) Department of Electrical Engineering, Indian Institute of Technology Bombay (IITB), Powai, Mumbai, 400076, India;(2) Department of Civil Engineering, Indian Institute of Technology Bombay (IITB), Powai, Mumbai, 400076, India;(3) System Engineering Section Control Instrumentation Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai, 400076, India |
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| Abstract: | With the development of high-speed railways in China, more than 2000 high-speed trains will be put into use. Safety and efficiency
of railway transportation is increasingly important. We have designed a high availability quadruple vital computer (HAQVC)
system based on the analysis of the architecture of the traditional double 2-out-of-2 system and 2-out-of-3 system. The HAQVC
system is a system with high availability and safety, with prominent characteristics such as fire-new internal architecture,
high efficiency, reliable data interaction mechanism, and operation state change mechanism. The hardware of the vital CPU
is based on ARM7 with the real-time embedded safe operation system (ES-OS). The Markov modeling method is designed to evaluate
the reliability, availability, maintainability, and safety (RAMS) of the system. In this paper, we demonstrate that the HAQVC
system is more reliable than the all voting triple modular redundancy (AVTMR) system and double 2-out-of-2 system. Thus, the
design can be used for a specific application system, such as an airplane or high-speed railway system. |
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