Method of interrogation of a differential sensor of acoustic type having two resonances and device implementing the method of interrogation
US9395392B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2012 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Jan 23, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of interrogating a surface acoustic wave differential sensor formed by two resonators is provided, wherein the method allows the measurement of a physical parameter by determination of the difference between the natural resonant frequencies of the two resonators, which difference is determined on the basis of the analysis of a signal representative of the level of a signal received as echo of an interrogation signal, for a plurality of values of a frequency of the interrogation signal in a domain of predetermined values; the analysis can be based on the cross-correlation of the said signal representative of the level according to a splitting into two distinct frequency sub-bands. An advantage is that it may be implemented in a radio-modem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.