Safety critical systems are embedded systems that, in cases of errors or failures, could cause injury or loss of human life. Systems such as flight control, automotive drive-by-wire, nuclear reactor management, or operating room heart-lung-bypass machines naturally come to mind. But devices as common as the power windows in the car are also safety-critical, as soon as you imagine a small child reaching out of the car window at a fast food drive-thru to get another packet of ketchup and accidentally leaning on the control switch making the window shut on the child's arm, or worse. Small system defects or situations can cascade into life-threatening failures very quickly. The selection of a safety critical system architecture is driven by a rigorous hazard analysis followed by risk analysis, in addition to conventional system requirements definition. System design may include combinations of redundant sensor configurations, shutdown systems, actuation monitoring, multiple channel architectures, and/or monitoractuator structuring. These embedded systems architectures are much more valuable than can be measured in dollars and cents. Their true value is in protecting and saving human lives.
Design of safety critical systems
2011
14 Seiten, 10 Bilder, 4 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
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