Sediment state estimating apparatus, sediment state estimating method, and sediment state estimating system
US10006829B2 · kind B2 · utility
2Cited by
2References
2Claims
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Key dates
| Filing date | Mar 22, 2016 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Aug 5, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01L27/007
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The state of sediment can be estimated based on an initial power supply frequency at which a diaphragm resonates in an initial state in which sediment is not accumulated and a power supply frequency at which the diaphragm resonates after the sediment is accumulated, the state of the sediment can be estimated even in a stage in which the sediment is slightly accumulated on the diaphragm and a zero-point shift does not occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.