Detecting and measuring liquid flow in remote sewer structures
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United States of America Patent
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Aug 24, 1999
Grant Date -
N/A
app pub date -
Nov 19, 1997
filing date -
Nov 19, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
In the particular embodiments described in the specification, a virtual sewer flow monitor detects flow rate and depth information periodically and supplies it to a scattergraph generator and a polynomial curve generator produces a polynomial curve corresponding to the scattergraph data. A filter eliminates polynomial curve portions corresponding to normal sewer flow conditions and an SSO detector responds to curve portions indicating a sewer overflow condition to generate an alarm.
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