Research Article Open Access

Design and Development of Object Controllers Risk Assessment Tool

Abstract

Railway signaling systems as safety-critical systems, must be developed according to some specified safety principles denoted in CENELEC standards to obtain the desired level of safety and reliability. The Interlocking system functions as the 'brain' of railway signaling, authorizing trains to travel along designated safe routes under specific conditions, ensuring no risk of collision. Object Controllers (OCs), functioning as interlocking subsystems, are responsible for controlling and managing field elements such as signals, points, track circuits, and other critical controllable objects. OC boards are composed of hardware and software subsystems that should be designed by relevant railway safety standards such as EN50129 and EN50126. This paper focused on a test platform developed to accelerate the design and development life cycle process of OCs. In this tool, by importing system architecture, identification and assessment of risks using the FMEA method are processed. Finally, the reliability of the subsystems and the whole system is calculated.

Donya Sheikhi*

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