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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 availability quadruple vital computer (HAQVC)%29&ck%5B%5D=abstract&ck%5B%5D=keyword'>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.

[1]Dou, F.S., Cao, Z., Luo, L., Long, Z.Q., 2007. Design and Realization of Safety Computer Systems Based on Double 2-Vote-2 Redundancy. Chinese Control Decision Conference, Wuxi, China, p.1059-1061, 1066 (in Chinese).

[2]EN 50126:1999. Railway Applications—the Specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS). European Committee for Electrotechnical Standardization.

[3]EN 50128:2001. Railway Applications-Communication, Signaling and Processing Systems-Software for Railway Control and Protection Systems. European Committee for Electrotechnical Standardization.

[4]EN 50129:2003. Railway Applications-Communication, Signaling and Processing Systems-Safety Related Electronic Systems for Signaling. European Committee for Electrotechnical Standardization.

[5]IEC 61508-2:2000. Functional Safety of Electrical/Electronic/ Programmable Electronic Safety-Related Systems—Part 2: Requirements for Electrical/Electronic/Programmable Electronic Safety-Related Systems. International Electrotechnical Commission.

[6]IEC 61508-6:2000. Functional Safety of Electrical/Electronic/ Programmable Electronic Safety-Related Systems—Part 6: Guidelines on the Application of IEC 61508-2 and IEC 61508-3. International Electrotechnical Commission.

[7]IEC/PAS 62409:2005. Real-time Ethernet for Plant Automation (EPA). International Electro Technical Commission.

[8]Kim, H., Jeon, H.J., Lee, K., Lee, H., 2002. The Design and Evaluation of All Voting Triple Modular Redundancy System. Annual Reliability and Maintainability Symposium, p.439-444.

[9]Kim, H., Lee, H., Lee, K., 2005. The design and analysis of AVTMR (all voting triple modular redundancy) and dual-duplex system. Reliability Engineering and System Safety, 88(3):291-300.

[10]Paul, C.R., 2006. Introduction to Electromagnetic Compatibility (2nd Ed.). John Wiley & Sons, Inc., Hoboken, NJ, USA.

[11]Qin, Q.N., Wei, X.Y., Yu, R.R., Han, L., 2010. Simplified Design of Embedded Double 2-Vote-2 Computer System. 3rd International Symposium on Test Automation and Instrumentation, Xiamen, China, p.233-236.

[12]Wang, S., Ji, Y.D., Dong, W., Yang, S.Y., 2007. Design and RAMS analysis of a fault-tolerant computer control system. Tsinghua Science and Technology, 12(S1):116-121.