Diverse integrated processing using processors and diverse firmware
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United States of America Patent
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Aug 7, 2018
Grant Date -
Jan 18, 2018
app pub date -
Jul 12, 2016
filing date -
Jul 12, 2016
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Abstract
Fault detection devices, systems and methods are provided which implement identical processors. A first processor is configured to receive a first measurement, execute a first firmware based on the first measurement, and output a first result of the executed first firmware. A second processor, identical to the first processor, is configured to receive a second measurement, execute a second firmware based on the second measurement, and output a second result of the executed second firmware. The first firmware and the second firmware provide a same nominal function in a diverse manner for calculating the first result and the second result, respectively, such that the first result and the second result are expected to be within a predetermined margin. Thus, a fault can be detected by comparing the first and the second results.
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