Abstract—Applications of advanced electronic technologies
have greatly increased the efficiency and performance of safetycritical computer systems. In addition, the architectural flexibility
of these systems reduces the types of printed circuit boards they
can use, thereby reducing difficulties with maintenance. A newly
developed safety-critical computer system is presented in this
paper. The system uses some advanced electronic technologies and
can be reconfigured to be a triple-modular-redundant system or a
dual-modular-duplex-redundant system for different applications.
The system’s architecture and fail-safe technologies are discussed,
and its reliability, availability, maintainability, and safety (RAMS)
are evaluated based on the Markov method. Based on these
evaluations, the safety-critical computer system developed herein
demonstrates great potential for rail use.
Index Terms—Fail-safe, Markov, recon
Abstract—Applications of advanced electronic technologies
have greatly increased the efficiency and performance of safetycritical computer systems. In addition, the architectural flexibility
of these systems reduces the types of printed circuit boards they
can use, thereby reducing difficulties with maintenance. A newly
developed safety-critical computer system is presented in this
paper. The system uses some advanced electronic technologies and
can be reconfigured to be a triple-modular-redundant system or a
dual-modular-duplex-redundant system for different applications.
The system’s architecture and fail-safe technologies are discussed,
and its reliability, availability, maintainability, and safety (RAMS)
are evaluated based on the Markov method. Based on these
evaluations, the safety-critical computer system developed herein
demonstrates great potential for rail use.
Index Terms—Fail-safe, Markov, recon
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