Filling level measuring device and method for the non-contact determination of the filling level of a filling product in a receptacle
US6684919B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 7, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Feb 7, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F23/284
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for non-contact determination of overfilling of a receptacle filled with a filling product generates an envelope curve from echo signals reflected on a filling product surface. An amplitude of the echo signals is mathematically processed in a predetermined short range of the envelope curve, and is compared to a predetermined reference value (x). When the amplitude exceeds the predetermined reference value (x), a signal representative of overfilling of the receptacle is outputted. Further, described are an evaluation arrangement for realizing the method and a filling level measuring device equipped with such an evaluation arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.