Method and apparatus for safe single-channel evaluation of sensor signals
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United States of America Patent
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May 28, 2002
Grant Date -
May 2, 2002
app pub date -
Jul 27, 2001
filing date -
Aug 2, 2000
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Abstract
For the safe evaluation of sensor signals, singular further processing is permitted by producing a redundancy signal in accordance with a prescribed algorithm when the sensor signals are actually generated. The redundant single-channel nature is made possible by virtue of safety-conforming data processing and data transmission being carried out on a single channel by virtue of a downstream processing device deriving dual-channel signals therefrom, by reversing the algorithm, and testing them for plausibility by reciprocal result comparison.
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