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公开(公告)号：US20100162818A1
公开(公告)日：2010-07-01
申请号：US12663160
申请日：2008-06-02
IPC分类号： G01N22/04 , G01F23/00 , G01F23/284
CPC分类号： G01N22/04 , G01F23/284
摘要： The invention relates to the detection of liquid in a cavity of a structure, e.g. a sandwich-structure cell with honeycomb core and carbon fiber composite coating. The structure is subjected to a mechanical vibration, at a frequency fm in the audible range, by an excitation wave, the area being explored is subjected to an incident electromagnetic wave and the reflected electromagnetic wave is analyzed to deduce therefrom the presence or the absence of liquid in cavities. The Faraday wave induced on the surface of the liquid in the cavity comprises subharmonic frequencies of fm which modulate the reflected electromagnetic wave and make it possible to identify the presence of liquid. A detection apparatus comprises an excitation wave generation device for generating the vibration excitation wave, an electromagnetic wave generation device for generating the incident electromagnetic wave, a measuring device for detecting and measuring the reflected electromagnetic wave, and a signal processor.
摘要翻译： 本发明涉及在结构的空腔中的液体的检测。 具有蜂窝芯和碳纤维复合涂层的三明治结构电池。 该结构通过激发波在可听到的范围内以频率fm进行机械振动，所探测的区域经受入射电磁波，并且反射的电磁波被分析从而推断出存在或不存在 液体在空腔中。 在空腔中的液体表面引起的法拉第波包含调谐反射电磁波的fm的次谐波频率，并且可以识别液体的存在。 检测装置包括用于产生振动激励波的激发波产生装置，用于产生入射电磁波的电磁波产生装置，用于检测和测量反射的电磁波的测量装置以及信号处理器。
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公开(公告)号：US08176785B2
公开(公告)日：2012-05-15
申请号：US12663160
申请日：2008-06-02
CPC分类号： G01N22/04 , G01F23/284
摘要： The invention relates to the detection of liquid in a cavity of a structure, e.g. a sandwich-structure cell with honeycomb core and carbon fiber composite coating. The structure is subjected to a mechanical vibration, at a frequency fm in the audible range, by an excitation wave, the area being explored is subjected to an incident electromagnetic wave and the reflected electromagnetic wave is analyzed to deduce therefrom the presence or the absence of liquid in cavities. The Faraday wave induced on the surface of the liquid in the cavity comprises subharmonic frequencies of fm which modulate the reflected electromagnetic wave and make it possible to identify the presence of liquid. A detection apparatus comprises an excitation wave generation device for generating the vibration excitation wave, an electromagnetic wave generation device for generating the incident electromagnetic wave, a measuring device for detecting and measuring the reflected electromagnetic wave, and a signal processor.
摘要翻译： 本发明涉及在结构的空腔中的液体的检测。 具有蜂窝芯和碳纤维复合涂层的三明治结构电池。 该结构通过激发波在可听到的范围内以频率fm进行机械振动，所探测的区域经受入射电磁波，并且反射的电磁波被分析从而推断出存在或不存在 液体在空腔中。 在空腔中的液体表面引起的法拉第波包含调谐反射电磁波的fm的次谐波频率，并且可以识别液体的存在。 检测装置包括用于产生振动激励波的激发波产生装置，用于产生入射电磁波的电磁波产生装置，用于检测和测量反射的电磁波的测量装置以及信号处理器。
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3.发明授权Radioaltimeter type of detector and a proximity fuse equipped with such a detector 失效检测器的放射性计量器类型和配有这种检测器的接近保险丝
公开(公告)号：US4973967A
公开(公告)日：1990-11-27
申请号：US276250
申请日：1988-11-23
申请人： Jacques David , Raymond Crampagne , Jean Baricos
发明人： Jacques David , Raymond Crampagne , Jean Baricos
CPC分类号： G01S13/345 , F42C13/045 , H03B5/1847
摘要： The invention relates to a radioaltimeter type detector comprising an oscillator-transmitter (10), a modulator (20) suitable for frequency modulating the oscillator-transmitter according to a given characteristic, a mixer receiving the signal from the oscillator-transmitter and a corresponding echo signal reflected by a target, and a discriminator circuit (50, 60) connected to the output from the mixer. According to the invention, the modulator (20) includes a digital memory (21) containing a series of values defining the frequency modulation characteristic of the oscillator-transmitter (10).
摘要翻译： 本发明涉及一种包括振荡器 - 发射器（10），适于根据给定特性对振荡器 - 发射机进行频率调制的调制器（20）的放射计型式检测器，接收来自振荡器 - 发射器的信号的混频器和对应的回波 由目标反射的信号，以及连接到混频器的输出的鉴频电路（50,60）。 根据本发明，调制器（20）包括数字存储器（21），其包含定义振荡器 - 发射机（10）的频率调制特性的一系列值。
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