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Full Description
Scope
This recommended practice defines the functions, performance, interface and environmental conditions of vital computers used in rail transportation systems such as railways, metros, light transport and trams.
Purpose
The purpose of this recommended practice is to establish general requirements for vital computers, promote unified functions, performance and interfaces to increase interchangeability of vital computers and compatibility between vital computers and systems, simplify system design and reduce the overall cost of manufacturing, operating and maintaining systems.
Abstract
New IEEE Standard - Active - Draft.Requirements for functions, performance, and interface and environmental conditions for vital computers used in rail safety-related systems are established in this recommended practice. Vital computer functions are developed based on the technology of computer systems, communication, and functional safety as well as security considerations. A vital computer is composed with basic functional modules such as main process, input, output and communication. This recommended practice can be applied to vital computers for onboard and wayside equipment in rail applications. Application systems which are developed based on vital computers are not covered, but safety-related conditions for application systems are proposed. The internal structure and the technical realization of the vital computer are not constrained in this recommended practice.
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