Design of Power Supplies Used in Safety-Critical Computer Platform

Abstract

Power supply system is an important part of safety-critical computer platform for the railway signal control equipment. According to the basic architecture of dual-duplex platform, to meet the reliability requirements of safety-critical computer platform in EN50126, the power supply system is improved and better architectures is proposed. In addition, according to the EMC requirements of EN50121 railway standard, to solve some important EMC problems, the power system adopts the following design methods: transient voltage suppression, current-limiting and voltage dips suppression. Finally, this paper uses Reliability analysis Software to verify the effect of this power supply system design on system reliability, and uses experimental method to verify the function realization of EMC solutions.