Detecting and measuring liquid flow in remote sewer structures
US5942698A · kind A · utility
53Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1997 |
| Grant date | Aug 24, 1999 |
| Priority date | — |
| Expiry date | Nov 19, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/002
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.