Abstract
Today systems become more and more complex and networked. This increasing complexity requires new methods for systems engineering. In addition, with the number of internal or external components the probability of faulty components within systems increases. At every point of time, some component may be faulty or does not deliver the desired function. This paper presents a new design methodology to design systems that can handle the mentioned issues of the systems by design. The new methodology is based on System-Theoretic Process Analysis and standard systems engineering methods.
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Notes
- 1.
Please note that stopping ventilation in case of an error is the defined safe state and thus not considered as a hazard. (Safe states are defined in the respective standards e.g. IEC60601-2-12.) Therefore, it is put in parenthesis. Nevertheless, this situation may be added as hazard in order to improve the design and to increase reliability. In addition, it may be regarded as a business risk because some notified bodies or government institutions (e.g. the German ministry of health) require information regarding interrupted ventilation caused by devices going to their safe states.
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Becker, U. (2018). STPA Guided Systems Engineering. In: Gallina, B., Skavhaug, A., Schoitsch, E., Bitsch, F. (eds) Computer Safety, Reliability, and Security. SAFECOMP 2018. Lecture Notes in Computer Science(), vol 11094. Springer, Cham. https://doi.org/10.1007/978-3-319-99229-7_15
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DOI: https://doi.org/10.1007/978-3-319-99229-7_15
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