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A Model for Intelligent Protection of Critical Computer Systems

Gonzalez Fernando, Rusinkiewicz Marek, Zalewski Janusz

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2021

Vol. 25, No 3

279--294

We propose a unified model for the enforcement of safety and security of cyber-physical systems in critical applications. We argue that the need for resilience of a critical system requires simultaneous protection from hazards (safety) and from unauthorized access (security). We review how the critical system properties are handled and present a framework for their modeling. Then we present a model for the enforcement of critical system properties through situational awareness, including threat monitoring, data analysis and state prediction for decision making. We conclude by presenting a case study of a power grid simulation and advocate the ability to move from today's reactive approaches to proactive ones that aim at avoiding system failures.

Conception of a Control Unit for Critical Systems

Sałamaj M.

International Journal of Electronics and Telecommunications

2013

Vol. 59, No. 4

363-368

The article regards critical systems precisely controlled by safety units. A new idea of safety logic microcontroller is proposed. It is built on the basis of the simplest mechanisms and technical solutions. This approach allowed to obtain a complex decision-making and control microsystem, in which the applied mechanisms and solutions increased its reliability. As a result, the proposed control unit proved to be a universal solution, which can be used in any critical system.

New Conception of Safety Logic Microcontroller

Sałamaj M.

International Journal of Electronics and Telecommunications

2012

Vol. 58, No. 4

419-424

In this paper a new conception of safety logic microcontroller (BML) is described, together with its physical hardware realization. The unit has various mechanisms which increase its safety and reliability, so that it can satisfy rigorous requirements of safety-critical systems. Thus, the BML unit uses some untypical and innovative technical solutions. The new approach to safety systems development allowed to propose a new conception. The paper describes also physical realization of small multiprocessor BML unit for management of decision-control systems adopted to critical usage.