Transducer for non-invasive measurement
US12203797B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2021 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Aug 31, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/2437
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A transducer for non-invasive measurement includes: a piezoelectric element; a base plate; and driver electronics. The piezoelectric element is mounted to a first face of the base plate. A second face of the base plate is mountable to a wall of a vessel that holds a liquid. The driver electronics drive the piezoelectric element at a plurality of activation frequencies. When the second face of the base plate is mounted to the wall of the vessel, the transducer when activated excites acoustic waves in the base plate and to launch an acoustic wave into the liquid. The transducer is designed such that an angular divergence of the acoustic wave launched into the liquid varies as a function of at least the activation frequency and a dimension of an emitter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.