发明名称 |
METHOD FOR THE RAPID INTERROGATION OF A PASSIVE SENSOR, IN PARTICULAR OF THE SURFACE ACOUSTIC WAVES TYPE, AND SYSTEM FOR MEASURING THE UNIQUE FREQUENCY OF SUCH A SENSOR |
摘要 |
For passive sensor with resonator having a natural frequency, a method comprises: a first phase emission of an electromagnetic signal toward the passive sensor at an emission frequency, the resonator oscillating in a forced regime at the emission frequency and then oscillating at its natural frequency when the emission is cut off; a first phase reception of the damped signal oscillating at natural frequency emitted by passive sensor, a measurement of the frequency being performed; a second phase emission of an electromagnetic signal at the measured frequency toward the passive sensor, the resonator oscillating in a forced regime at the measured frequency and then oscillating at its natural frequency when the emission is cut off; a second phase reception of the damped signal oscillating at natural frequency, a measurement of the frequency being performed, determination of the natural frequency being stopped due to measurement performed in this second reception phase. |
申请公布号 |
EP2769237(A1) |
申请公布日期 |
2014.08.27 |
申请号 |
EP20120778096 |
申请日期 |
2012.10.19 |
申请人 |
UNIVERSITÉ DE LORRAINE;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) |
发明人 |
PRIEUR, GÉRARD;EL MAZRIA, OMAR;M'JAHED, MOHAMED |
分类号 |
G01S13/75;G01D5/244 |
主分类号 |
G01S13/75 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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