Automotive side object detection sensor blockage detection system and related techniques
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United States of America Patent
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Aug 26, 2003
Grant Date -
N/A
app pub date -
Aug 8, 2002
filing date -
Aug 8, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system is provided for detecting blockage of an automotive side object detection system ('SODS'). The system includes a blockage detection processor, which is operative to determine whether an RF leakage signal level sensed between transmit and receive antennas of the system substantially match one or more of a plurality of pattern recognition information curves. If it is determined that the leakage signal level substantially matches one or more of a plurality of pattern recognition information curves, a blocked condition of the SODS is declared, as may be caused by mud, salt, ice, etc. The blockage detection processor is further operative to determine whether the leakage signal exceeds a predetermined blockage threshold level. If the leakage exceeds the predetermined blockage threshold level, a blocked condition of the SODS is also declared.
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