The CLEARSY Safety Platform: 5 Years of Research, Development and Deployment
This addresses the problem of high development and certification costs for safety-critical systems in industries like railways, though it appears incremental as it builds on existing formal methods and hardware.
The CLEARSY Safety Platform (CSSP) was developed to reduce costs and ease the creation of safety-critical systems, achieving SIL4 readiness through a combination of hardware and formal methods, with 5 years of deployment experience in railways.
The CLEARSY Safety Platform (CSSP) was designed to ease the development of safety critical systems and to reduce the overall costs (development, deployment, and certification) under the pressure of the worldwide market. A smart combination of hardware features (double processor) and formal method (B method and code generators) was used to produce a SIL4-ready platform where safety principles are built-in and cannot be altered by the developer. Summarizing a 5-year return of experience in the effective application in the railways, this article explains how this approach is a game-changer and tries to anticipate the future of this platform for safety critical systems. In particular, the education of future engineers and the seamless integration in existing engineering processes with the support of Domain Specific Languages are key topics for a successful deployment in other domains. DSL like Robosim to program mobile robots and relay circuits to design railway signalling systems are connected to the platform.