Methods and systems for diagnosing hardware and software faults using time-stamped events
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United States of America Patent
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Jun 11, 2013
Grant Date -
Jun 28, 2012
app pub date -
Dec 23, 2010
filing date -
Dec 23, 2010
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Abstract
A transportation vehicle including a high-resolution clock, an electronic network including two or more tasks, including first and second tasks, and a memory including instructions causing a processor to classify faults in the electronic network using the clock. The steps include receiving a first fault code generated at the first task, receiving a second fault trouble code generated at the second task of the electronic system in response to a second fault, and identifying an execution cycle offset associated with the first and second tasks using an execution schedule, and considering whether the first cycle is separated from the second cycle by the execution cycle offset identified by the schedule. The instructions also cause the processor to identify causal relationships for a plurality of faults via a pair-wise repetition of the above-described analysis for at least one combination of tasks other than the first and second tasks.
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