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公开(公告)号：US08436512B2
公开(公告)日：2013-05-07
申请号：US13080508
申请日：2011-04-05
IPC分类号： H01L41/107
CPC分类号： G01N29/036 , B60C23/0449 , G01N29/2481 , G01N29/42 , G01N29/4454 , G01S13/753 , H04Q9/00 , H04Q2209/10 , H04Q2209/40 , H04Q2209/75
摘要： A method of remotely interrogating a passive sensor, comprising at least one resonator, so as to determine the resonant frequency of said resonator, having a resonant frequency response defined by the design of said resonator, includes: a preliminary frequency-scan step for interrogating said resonator over a frequency range allowing for the rapid determination of a first resonant frequency (fr0) of said resonator by detecting the amplitude of the response signal of said resonator; a first step of a first couple of interrogations of said resonator at a first frequency (f11) and a second frequency (f21) such that: f11=fr0−fm/2 and f21=fr0+fm/2, fm being smaller than the width at half-maximum of the resonant frequency response defined by the design, allowing a first couple of amplitudes (Pf11, Pf21) of first and second reception signals to be defined; a second step of determining the amplitude difference (Δ(Pf11−Pf21)), said difference being signed; a third step allowing a first resonant frequency (fr1), controlled by said signed amplitude difference, to be defined and having the formula fr1=fr0+K*[Δ(Pf11−Pf21)−Ca], where Ca is a control set-point and K is a constant; and the reiteration of the first, second and third steps comprising the definition of an (i+1)th resonant frequency (fri+1) from an ith resonant frequency (fri) having the formula: fri+1=fri+K*[Δ(Pf1i−Pf2i)−Ca], so as to obtain a determined resonant frequency (fri+1) such that the signed amplitude difference (Δ(Pf1i−Pf2i)) is equal to the control set-point (Ca).
摘要翻译： 一种远程询问无源传感器的方法，包括至少一个谐振器，以便确定具有由所述谐振器的设计定义的谐振频率响应的所述谐振器的谐振频率，包括：初步频率扫描步骤，用于询问所述 谐振器，其允许通过检测所述谐振器的响应信号的幅度来快速确定所述谐振器的第一谐振频率（fr0）; 以第一频率（f11）和第二频率（f21）对所述谐振器的第一对询问的第一步骤，使得：f11 = fr0-fm / 2和f21 = fr0 + fm / 2，fm小于 由设计定义的谐振频率响应的最大值的宽度，允许定义第一和第二接收信号的第一对幅度（Pf11，Pf21）; 确定振幅差（Delta（Pf11-Pf21））的第二步骤，所述差被签名; 允许由所述有符号振幅差控制的第一共振频率（fr1）被定义并具有公式fr1 = fr0 + K * [Δ（Pf11-Pf21）-Ca]的第三步骤，其中Ca是控制设置 - 点和K是常数; 并且重复第一，第二和第三步骤包括从具有以下公式的第i个谐振频率（星期一）定义第（i + 1）个谐振频率（星期一+ 1） Delta（Pf1i-Pf2i）-Ca]，以获得确定的谐振频率（fri + 1），使得有符号的振幅差（Delta（Pf1i-Pf2i））等于控制设定点（Ca）。
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2.发明申请公开(公告)号：US20130218498A1
公开(公告)日：2013-08-22
申请号：US13588606
申请日：2012-08-17
IPC分类号： G01R9/00
摘要： 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.
摘要翻译： 提供了一种询问由两个谐振器形成的表面声波差分传感器的方法，其中该方法允许通过确定两个谐振器的固有谐振频率之间的差异来测量物理参数，该差是基于 对于在预定值的域中的询问信号的频率的多个值，表示作为询问信号的回波接收的信号的电平的信号的分析; 分析可以基于表示根据分成两个不同频率子带的电平的所述信号的互相关。 优点在于它可以在无线电调制解调器中实现。
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3.发明授权公开(公告)号：US09395392B2
公开(公告)日：2016-07-19
申请号：US13588606
申请日：2012-08-17
摘要： 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.
摘要翻译： 提供了一种询问由两个谐振器形成的表面声波差分传感器的方法，其中该方法允许通过确定两个谐振器的固有谐振频率之间的差异来测量物理参数，该差是基于 对于在预定值的域中的询问信号的频率的多个值，表示作为询问信号的回波接收的信号的电平的信号的分析; 分析可以基于表示根据分成两个不同频率子带的电平的所述信号的互相关。 优点在于它可以在无线电调制解调器中实现。
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公开(公告)号：US20110241482A1
公开(公告)日：2011-10-06
申请号：US13080508
申请日：2011-04-05
IPC分类号： H01L41/04
CPC分类号： G01N29/036 , B60C23/0449 , G01N29/2481 , G01N29/42 , G01N29/4454 , G01S13/753 , H04Q9/00 , H04Q2209/10 , H04Q2209/40 , H04Q2209/75
摘要： A method of remotely interrogating a passive sensor, comprising at least one resonator, so as to determine the resonant frequency of said resonator, having a resonant frequency response defined by the design of said resonator, includes: a preliminary frequency-scan step for interrogating said resonator over a frequency range allowing for the rapid determination of a first resonant frequency (fr0) of said resonator by detecting the amplitude of the response signal of said resonator; a first step of a first couple of interrogations of said resonator at a first frequency (f11) and a second frequency (f21) such that: f11=fr0−fm/2 and f21=fr0+fm/2, fm being smaller than the width at half-maximum of the resonant frequency response defined by the design, allowing a first couple of amplitudes (Pf11, Pf21) of first and second reception signals to be defined; a second step of determining the amplitude difference (Δ(Pf11−Pf21)), said difference being signed; a third step allowing a first resonant frequency (fr1), controlled by said signed amplitude difference, to be defined and having the formula fr1=fr0+K*[Δ(Pf11−Pf21)−Ca], where Ca is a control set-point and K is a constant; and the reiteration of the first, second and third steps comprising the definition of an (i+1)th resonant frequency (fri+1) from an ith resonant frequency (fri) having the formula: fri+1=fri+K*[Δ(Pf1i−Pf2i)−Ca], so as to obtain a determined resonant frequency (fri+1) such that the signed amplitude difference (Δ(Pf1i−Pf2i)) is equal to the control set-point (Ca).
摘要翻译： 一种远程询问无源传感器的方法，包括至少一个谐振器，以便确定具有由所述谐振器的设计定义的谐振频率响应的所述谐振器的谐振频率，包括：初步频率扫描步骤，用于询问所述 谐振器，其允许通过检测所述谐振器的响应信号的幅度来快速确定所述谐振器的第一谐振频率（fr0）; 以第一频率（f11）和第二频率（f21）对所述谐振器的第一对询问的第一步骤，使得：f11 = fr0-fm / 2和f21 = fr0 + fm / 2，fm小于 由设计定义的谐振频率响应的最大值的宽度，允许定义第一和第二接收信号的第一对幅度（Pf11，Pf21）; 确定振幅差（＆Dgr;（Pf11-Pf21））的第二步骤，所述差被签名; 允许由所述有符号幅度差控制的第一共振频率（fr1）被定义并具有公式fr1 = fr0 + K * [＆Dgr（Pf11-Pf21）-Ca]的第三步骤，其中Ca是控制集 -point和K是一个常数; 并且重复第一，第二和第三步骤包括从具有以下公式的第i个谐振频率（星期一）定义第（i + 1）个谐振频率（星期一+ 1） ＆Dgr;（Pf1i-Pf2i）-Ca]，以获得确定的谐振频率（fri + 1），使得有符号振幅差（＆Dgr;（Pf1i-Pf2i））等于控制设定点（Ca） 。
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