Method of interrogating a sensor of surface acoustic wave type
US9435768B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2012 |
| Grant date | Sep 6, 2016 |
| Priority date | — |
| Expiry date | Nov 20, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0675
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of interrogating sensors of SAW type, which allows notably the gathering of physical measurements of parameters carried out by SAW sensors, the method for gathering the measurement of an SAW sensor comprising a first step of generating and emitting an electromagnetic signal corresponding to the dilated time-reversal of a dilation coefficient k, of an impulse response signature which is characteristic of the SAW sensor, a second step of gathering a signal received as echo originating from the SAW sensor, a third step of determining a maximum of cross-correlation of the signal received as echo during the second step, the first step being applied with a set of values of the dilation coefficient k in a determined domain, the measurement of a physical parameter then being determined by the dilation coefficient k for which the power or the amplitude of the signal gathered as echo is a maximum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.