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.
Design and Reliability, Availability, Maintainability, and Safety Analysis of a High Availability Quadruple Vital Computer System
2017-12-15
16 pages
Article/Chapter (Book)
Electronic Resource
English
Fault tolerant , High availability quadruple vital computer (HAQVC) , Reliability , Availability , Maintainability , And safety (RAMS) Engineering , Transportation Technology and Traffic Engineering , Transportation , Electrical Engineering , Theoretical and Applied Mechanics , Materials Engineering
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