Functional architecture pattern for safety applications
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United States of America Patent
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Jan 12, 2016
Grant Date -
May 21, 2015
app pub date -
Apr 9, 2013
filing date -
Apr 9, 2012
priority date (Note) -
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Abstract
A process for decomposing safety software involves the steps of providing a first software module associated with a first logical unit, providing a second software module associated with a second logical unit, instructing the first software module to implement a first safety goal based on a quality management level, and instructing the second software module to implement a second safety goal based on a safety integrity level, where the second software module uses at least one input and at least one output of the second logical unit to determine if the second safety goal is satisfied. Consequently, the second software module uses a result of the first software module to determine if the first safety goal has been completed, and the second software module uses at least one algorithm to verify an operational status of the first logical unit.
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