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    Method and apparatus for using a two-wave mixing ultrasonic detection in rapid scanning applications
    52.
    发明授权
    Method and apparatus for using a two-wave mixing ultrasonic detection in rapid scanning applications 有权
    在快速扫描应用中使用双波混频超声波检测的方法和装置

    公开(公告)号：US07667851B2

    公开(公告)日：2010-02-23

    申请号：US10060983

    申请日：2002-01-30

    申请人： Marc Dubois ,  Thomas E. Drake ,  Robert J. Filkins ,  Peter W. Lorraine

    发明人： Marc Dubois ,  Thomas E. Drake ,  Robert J. Filkins ,  Peter W. Lorraine

    IPC分类号： G01B11/02

    CPC分类号： G01N29/2418 ,  G01B9/02065 ,  G01B9/02081 ,  G01B11/164 ,  G01B2290/70 ,  G01D5/266 ,  G01N21/453 ,  G01N2291/0427 ,  G01N2291/269

    摘要： The invention is directed to a wave characteristic adjusting device used to compensate for a wave characteristic distortion caused by the scanning motion of a probe beam of a two-wave mixing interferometer. The invention is also directed to an apparatus and method for using the wave characteristic adjusting device in a rapid scanning laser ultrasound testing device. In a rapid scanning laser ultrasound testing device, a laser pulse is directed at periodic points along a path across the surface of a manufactured object. The laser pulse initiates an ultrasonic signal associated with the manufactured object. An interferometer may be used to measure the initiated ultrasonic signal. The interferometer scans a probe beam along a path similar to the sonic initiating laser. A pulse of the probe beam is directed at the manufactured object in the vicinity of the initiating laser pulse while continuously scanning. As a result, the probe beam pulse may exhibit a Doppler shift. This Doppler shift may cause a loss in sensitivity of the two-wave mixing interferometer. The wave characteristic adjusting device may be used to compensate for the Doppler shift, thereby improving the sensitivity of the two-wave mixing interferometer.

    摘要翻译： 本发明涉及一种波特性调节装置，用于补偿由双波混频干涉仪的探测光束的扫描运动引起的波特性失真。 本发明还涉及一种在快速扫描激光超声波检测装置中使用波特性调节装置的装置和方法。 在快速扫描激光超声测试装置中，激光脉冲沿着穿过制造对象表面的路径的周期性点。 激光脉冲启动与制造对象相关联的超声波信号。 可以使用干涉仪来测量所引发的超声波信号。 干涉仪沿着类似于声音启动激光器的路径扫描探测光束。 探头光束的脉冲在连续扫描的同时在起始激光脉冲附近被引导到制造对象。 结果，探测光束脉冲可以表现出多普勒频移。 该多普勒频移可能导致双波混频干涉仪的灵敏度损失。 波特性调整装置可以用于补偿多普勒频移，从而提高双波混频干涉仪的灵敏度。

    System and method for zero intermediate frequency filtering of information communicated in wireless networks
    56.
    发明授权
    System and method for zero intermediate frequency filtering of information communicated in wireless networks 有权
    在无线网络中传送的信息的零中频滤波系统和方法

    公开(公告)号：US08280337B2

    公开(公告)日：2012-10-02

    申请号：US13017378

    申请日：2011-01-31

    申请人： Marc Dubois ,  Stephen Rayment ,  Andrew Keir ,  Kieran Parsons

    发明人： Marc Dubois ,  Stephen Rayment ,  Andrew Keir ,  Kieran Parsons

    IPC分类号： H04B1/10

    CPC分类号： H04B1/30

    摘要： A circuit for communicating information in a wireless network includes a filtering circuit in communication with a zero intermediate frequency (ZIF) transceiver circuit. The filtering circuit includes a first mixer in communication with an output of the ZIF transceiver circuit. The filtering circuit includes a first Surface Acoustic Wave (SAW) filter circuit in communication with an output of the first mixer. The filtering circuit includes a second mixer in communication with an output of the first SAW filter circuit. The filtering circuit includes a third mixer, and a second SAW filter circuit in communication with an output of the third mixer. The filtering circuit includes a fourth mixer in communication with an output of the second SAW filter circuit and an input of the ZIF transceiver circuit. The filtering circuit also includes a local oscillator circuit in communication with the first, second, third and fourth mixers.

    摘要翻译： 用于在无线网络中传送信息的电路包括与零中频（ZIF）收发器电路通信的滤波电路。 滤波电路包括与ZIF收发器电路的输出通信的第一混频器。 滤波电路包括与第一混频器的输出通信的第一表面声波（SAW）滤波器电路。 滤波电路包括与第一SAW滤波器电路的输出通信的第二混频器。 滤波电路包括第三混频器和与第三混频器的输出通信的第二SAW滤波器电路。 滤波电路包括与第二SAW滤波器电路的输出和ZIF收发器电路的输入通信的第四混频器。 滤波电路还包括与第一，第二，第三和第四混频器通信的本地振荡器电路。

    Laser-ultrasound inspection using infrared thermography
    58.
    发明授权
    Laser-ultrasound inspection using infrared thermography 失效
    使用红外热像仪进行激光超声检查

    公开(公告)号：US07605924B2

    公开(公告)日：2009-10-20

    申请号：US11567405

    申请日：2006-12-06

    申请人： Donald Robert Howard ,  Harry Israel Ringermacher ,  Marc Dubois ,  Timothy Gerard Richter ,  Thomas E. Drake

    发明人： Donald Robert Howard ,  Harry Israel Ringermacher ,  Marc Dubois ,  Timothy Gerard Richter ,  Thomas E. Drake

    IPC分类号： G01B11/00

    CPC分类号： G01N29/2418 ,  G01N25/72 ,  G01N29/228 ,  G01N2291/0231 ,  G01N2291/02881

    摘要： An inspection system is provided to examine internal structures of a target material. This inspection system combines an ultrasonic inspection system and a thermographic inspection system. The thermographic inspection system is attached to ultrasonic inspection and modified to enable thermographic inspection of target materials at distances compatible with laser ultrasonic inspection. Quantitative information is obtained using depth infrared (IR) imaging on the target material. The IR imaging and laser-ultrasound results are combined and projected on a 3D projection of complex shape composites. The thermographic results complement the laser-ultrasound results and yield information about the target material's internal structure that is more complete and more reliable, especially when the target materials are thin composite parts.

    摘要翻译： 提供检查系统来检查目标材料的内部结构。 该检测系统结合了超声波检测系统和热成像检测系统。 热成像检测系统连接超声波检查，并进行了修改，以便在与激光超声波检测相匹配的距离内对目标材料进行热成像检测。 使用目标材料上的深度红外（IR）成像获得定量信息。 将IR成像和激光超声结果组合并投影在复杂形状复合材料的3D投影上。 热成像结果补充了激光超声结果，并产生了关于目标材料的内部结构的更完整和更可靠的信息，特别是当目标材料是薄的复合部件时。

    System and method for zero intermediate frequency filtering of information communicated in wireless networks
    60.
    发明申请
    System and method for zero intermediate frequency filtering of information communicated in wireless networks 有权
    在无线网络中传送的信息的零中频滤波系统和方法

    公开(公告)号：US20070238419A1

    公开(公告)日：2007-10-11

    申请号：US11399536

    申请日：2006-04-07

    申请人： Marc Dubois ,  Stephen Rayment ,  Andrew Keir ,  Kieran Parsons

    发明人： Marc Dubois ,  Stephen Rayment ,  Andrew Keir ,  Kieran Parsons

    IPC分类号： H04B1/44

    CPC分类号： H04B1/30

    摘要： A circuit for communicating information in a wireless network includes a filtering circuit in communication with a zero intermediate frequency (ZIF) transceiver circuit. The filtering circuit includes a first mixer in communication with an output of the ZIF transceiver circuit. The filtering circuit includes a first Surface Acoustic Wave (SAW) filter circuit in communication with an output of the first mixer. The filtering circuit includes a second mixer in communication with an output of the first SAW filter circuit. The filtering circuit includes a third mixer, and a second SAW filter circuit in communication with an output of the third mixer. The filtering circuit includes a fourth mixer in communication with an output of the second SAW filter circuit and an input of the ZIF transceiver circuit. The filtering circuit also includes a local oscillator circuit in communication with the first, second, third and fourth mixers.

    摘要翻译： 用于在无线网络中传送信息的电路包括与零中频（ZIF）收发器电路通信的滤波电路。 滤波电路包括与ZIF收发器电路的输出通信的第一混频器。 滤波电路包括与第一混频器的输出通信的第一表面声波（SAW）滤波器电路。 滤波电路包括与第一SAW滤波器电路的输出通信的第二混频器。 滤波电路包括第三混频器和与第三混频器的输出通信的第二SAW滤波器电路。 滤波电路包括与第二SAW滤波器电路的输出和ZIF收发器电路的输入通信的第四混频器。 滤波电路还包括与第一，第二，第三和第四混频器通信的本地振荡器电路。