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With its ability to detect, identify and, if applicable, recover from occurred faults, online-diagnosis can help achieving fault-tolerant systems. A sound decision on an occurred fault is the foundation for fault-specific recovery actions. For this, typically a large amount of data has to be analyzed and evaluated. A diagnostic process implemented on a distributed system needs to communicate all those...
With its ability to detect, identify and, if applicable, recover from occurred faults, online-diagnosis can help achieving fault-tolerant systems. A sound decision on an occurred fault is the foundation for fault-specific recovery actions. For this, typically a large amount of data has to be analyzed and evaluated. A diagnostic process implemented on a distributed system needs to communicate all those...
Today mixed-criticality systems are used in most industrial domains, because of their integration advantages. They are smaller, weigh less and reduce the idle time of previously dedicated hardware. However, these systems can still be improved. Since their hardware is now used more efficiently it automatically suffers more under the aging effects of heat created by all the simultaneous computations...
With the ever increasing industrial demand for bigger, faster and more efficient systems, a growing number of cores is integrated on a single chip. Additionally, their performance is further maximized by simultaneously executing as many processes as possible not regarding their criticality. Even safety critical domains like railway and avionics apply these paradigms under strict certification regulations...
Transactional memories can radically simplify the programming of mixed-criticality systems by offering atomicity, consistency and isolation guarantees between subsystems of different criticality. A major objective in mixed-criticality systems is a modular safety case where each subsystem is certified to the respective safety assurance level. The prerequisite for this modular certification is the prevention...
Many Systems-of-Systems (SoS) are real-time systems and temporal correctness needs to be considered in the development process. Introducing a temporal specification and timing analysis in early design phases of the SoS architecting process avoids change efforts in later design phases where the SoS architecture fails to meet its timing requirements. This paper introduces a model-based development approach...
Active diagnosis aims at significantly improving system reliability by computing diagnostic information at run-time for fault isolation and online error recovery. The presented work extends semantic techniques, usually used in large-scale IT systems, for active diagnosis in open embedded real time systems. Open embedded systems (e.g., ambient assisted living for elderly care, critical infrastructures,...
Embedded systems must interact with their real-time environment in a timely and dependable fashion. Most embedded-systems architectures and design processes consider “non-functional” properties such as time, energy, and reliability as an afterthought, when functional correctness has (hopefully) been achieved. As a result, embedded systems are often fragile in their real-time behaviour, and take longer...
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