Acoustic method for measuring properties of a mobile medium
US5056357A · kind A · utility
57Cited by
2References
19Claims
0Family size
Inventors
Key dates
| Filing date | Jun 30, 1989 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Jun 30, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02836
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method for measuring parameters and/or properties in a mobile medium, e.g. a liquid or a gas. If acoustic energy is transmitted into a mobile medium, a flow is initiated in the medium. This flow is measured providing information on the properties of the medium. If the medium contains bodies which reflect acoustic and/or optical signals, ultrasound or laser-Doppler is used for measuring the velocity of the bodies. The Doppler-shifted signal provides information on the viscosity of the medium and on the bodies in the medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.