Low Cost High Integrity Platform
This addresses the problem of costly and resource-intensive development of safety-critical systems for industries like railways, though it appears incremental as it builds on established formal methods.
The paper tackles the challenge of developing safety-critical systems (SIL3/SIL4) by introducing the CLEARSY Safety Platform, which uses a double-processor and formal B method with proof to ensure high safety levels, aiming to reduce reliance on rare human resources and adapt off-the-shelf solutions.
Developing safety critical applications often require rare human resources to complete successfully while off-the-shelf block solutions appear difficult to adapt especially during short-term projects. The CLEARSY Safety Platform fulfils a need for a technical solution to overcome the difficulties to develop SIL3/SIL4 system with its technology based on a double-processor and a formal method with proof to ensure safety at the highest level. The formal method, namely the B method, has been heavily used in the railways industry for decades. Using its IDE, Atelier B, to program the CLEARSY Safety Platform ensures a higherlevel of confidence on the software generated. This paper presents this platform aimed at revolutionising the development of safety critical systems, developed through the FUI project LCHIP (Low Cost High Integrity Platform).