ON THE RELIABILITY AND SAFETY OF THE MICROCOMPUTERS AND THEIR RAILWAY APPLICATIONS

Assen Krumov; Borislav Boiadjiev

Scientific paper ID 1020 : 2014/3

ON THE RELIABILITY AND SAFETY OF THE MICROCOMPUTERS AND THEIR RAILWAY APPLICATIONS

Assen Krumov, Borislav Boiadjiev

For the computers and microprocessors, working in a real time environment, like railway systems, the most important characteristics are the reliability and safety. In the paper the reliability characteristics of some of the widely used microprocessors and microcomputers are given. Since their safety and reliability values are not high enough for application in the safety critical systems, like railway control systems, a redundancy method using logical circuits is applied. As result a significant improvement of safety is reached and in some extent – improvement in reliability. The block diagram of the redundancy method using logical IC is shown. In the paper concrete applications of microcomputers in the railway systems are suggested, corresponding to their reliability and safety characteristics.

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Надеждност Безопасност Микропроцесори Микрокомпютри Вградени компютърни системи Работа в реално време Железопътни осигурителни системиReliability Safety Microcomputers Embedded Computer Systems Real Time Railway Signalling SystemsAssen Krumov Borislav Boiadjiev

BIBLIOGRAPHY

[1] John C. Knight “Dependability of Embedded Systems”, ZCSE’02, May 19-25,2002, Orlando, Florida, USA.

[2] Palo Sauli “Reliability Prediction Of Microcircuits”, Microelectron. Reliability, vol.23, No.2, pp.283-294, 1983.

[3] David de Andrés, Juan-Carlos Ruiz, Daniel Gil, Pedro Gil “Dependability Assessment for the Selection of Embedded Cores”, Seventh European Dependable Computing Conference, 978-0-7695-3138-0/08 25.00 © 2008 IEEE DOI 10.1109/EDCC-7.2008.19.

[4] E. Moore, C. Shanon “ Reliable circuit using less reliable relays”, J. Franklin Inst. ,1956, 262, p.191., p.281.

[5] J. von Neuman “Probability logics and synthesis of reliable organisms from unreliable components”, Automata Studies, Prinston University Press, 1956.

[6] A. V. Krumov “Dependable computer systems”, AMAZON, 2012. ISBN-13: 978-1484949504, ISBN-10: 1484949501.