Detecting and measuring liquid flow in remote sewer structures

Details Detecting and measuring liquid flow in remote sewer structures Detecting and measuring liquid flow in remote sewer structures

1997-11-19

1999-08-24

Dombroske, George

Measuring and testing

Sampler, sample handling, etc.

Automatic control

340616, 340606, G01N 100

Patent

active

059426985

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.

REFERENCES:
patent: 3703715 (1972-11-01), McNally
patent: 3978462 (1976-08-01), Goodman
patent: 4392128 (1983-07-01), Young et al.
patent: 4546346 (1985-10-01), Wave et al.
patent: 4922234 (1990-05-01), Murphy
patent: 4961068 (1990-10-01), Hendricksen
patent: 5006833 (1991-04-01), Marlowe et al.
patent: 5053751 (1991-10-01), Gould
"A Guide to Short Term Flow Surveys of Sewer Systems", published by the Water Research Centre, Wiltshire, England, Chapter 4.

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