公开(公告)号：US20140320266A1

公开(公告)日：2014-10-30

申请号：US14265191

申请日：2014-04-29

Applicant: SENSEOR

Inventor： Luc CHOMMELOUX ,  Jean-Michel FRIEDT ,  Christophe DROIT ,  Jeremy MASSON

IPC: G06K7/10

CPC classification number: G06K7/10366 ,  G01K11/265 ,  G01S7/40 ,  G01S13/75

Abstract: A system comprises a cavity being reflecting for RF waves and comprises at least one acoustic wave sensor exhibiting a resonance frequency band, coupled to a sensor antenna; and an interrogation/reception device for the sensor. The interrogation/reception device comprises: means for transmitting/receiving an RF signal transmitting within an interrogation frequency band comprising the resonance frequency band of the sensor; at least a first transmission/reception antenna and a second transmission antenna/reception, positioned within the cavity; means for dividing the signal into at least a first RF signal and a second RF signal, the first signal being transmitted to the first transmission/reception antenna and the second signal being transmitted to the second transmission/reception antenna; means for creating a phase-shift between the first RF signal and the second RF signal; means for analysing the power level of the received signal. An interrogation method used in the system is also provided.

Abstract translation: 一种系统包括反射用于RF波的空腔，并且包括耦合到传感器天线的表现出共振频带的至少一个声波传感器; 以及用于传感器的询问/接收装置。 询问/接收装置包括：发送/接收在包括传感器的共振频带的询问频带内传送的RF信号的装置; 至少第一发送/接收天线和第二发送天线/接收，位于所述空腔内; 用于将所述信号分成至少第一RF信号和第二RF信号的装置，所述第一信号被发送到所述第一发送/接收天线，所述第二信号被发送到所述第二发送/接收天线; 用于在所述第一RF信号和所述第二RF信号之间产生相移的装置; 用于分析接收信号的功率电平的装置。 还提供了系统中使用的询问方法。

公开(公告)号：US20180335350A1

公开(公告)日：2018-11-22

申请号：US15983966

申请日：2018-05-18

Applicant: SENSEOR

Inventor： Manuel MONEDERO MIRANDA ,  Luc CHOMMELOUX

IPC: G01K11/26 ,  G01L1/16 ,  G01K1/02 ,  G01K7/32 ,  G08C17/02 ,  H01Q1/22

CPC classification number: G01K11/265 ,  G01D5/48 ,  G01K1/024 ,  G01K7/32 ,  G01L1/165 ,  G08C17/02 ,  H01Q1/2216

Abstract: A method for optimizing the design of a device includes interrogation means and a differential passive sensor, including a generator connected directly or indirectly to a reader antenna, a passive sensor including at least two resonators, a sensor antenna connected to the sensor. The method includes determining a set of curves PSAW as a function of the frequency of interrogation of the sensor, each curve being defined for a given impedance ZT representing the impedance of the Thevenin equivalent generator dependent on the impedance of the reader antenna, on the impedance of the sensor antenna and on the coupling between the two antennas, for a given sensor impedance ZSAW; selecting at least one curve PSAW from the set of predefined curves meeting two criteria: exhibiting two frequency peaks representative of a coherent differential sensor behavior; having a width at mid-height of the two the peaks below a threshold value; and determining the sensor antenna exhibiting the sensor antenna impedance correlated to the curve PSAW selected for the predefined SAW sensor.