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    ARC FLASH DETECTION SYSTEM AND METHOD
    3.
    发明申请
    ARC FLASH DETECTION SYSTEM AND METHOD 有权
    ARC闪光检测系统和方法

    公开(公告)号：US20110267620A1

    公开(公告)日：2011-11-03

    申请号：US12770827

    申请日：2010-04-30

    申请人： Juntao Wu ,  Hua Xia ,  Robert Deveaux ,  Zhihong Mao ,  David John Allcock ,  Qin Chen

    发明人： Juntao Wu ,  Hua Xia ,  Robert Deveaux ,  Zhihong Mao ,  David John Allcock ,  Qin Chen

    IPC分类号： G01N21/55 ,  G01H1/00 ,  G01R31/333

    CPC分类号： H02H1/0023

    摘要： A sensor to simultaneously detect light and acoustic waves is presented. The sensor includes one or more optical fibers and a diaphragm disposed near one end of at least one of the one or more optical fibers. The diaphragm is configured to vibrate upon incidence of acoustic waves from an arc flash and reflect a light beam into at least the one of the one or more of the optical fibers. A semi-transparent region is disposed around the one or more optical fibers to diffuse light originating from the arc flash into at least one of the one or more optical fibers.

    摘要翻译： 提出了同时检测光和声波的传感器。 传感器包括一个或多个光纤和位于一个或多个光纤中的至少一个的一端附近的隔膜。 隔膜被配置为在从电弧闪光引起的声波入射时振动，并且将光束反射到至少一个或多个光纤中的一个。 半透明区域设置在所述一个或多个光纤周围，以将来自所述电弧闪光的光漫射到所述一个或多个光纤中的至少一个中。

    Arc flash detection system and method
    4.
    发明授权
    Arc flash detection system and method 有权
    电弧闪光检测系统及方法

    公开(公告)号：US08040517B1

    公开(公告)日：2011-10-18

    申请号：US12770827

    申请日：2010-04-30

    申请人： Juntao Wu ,  Hua Xia ,  Robert Deveaux ,  Zhihong Mao ,  David John Allcock ,  Qin Chen

    发明人： Juntao Wu ,  Hua Xia ,  Robert Deveaux ,  Zhihong Mao ,  David John Allcock ,  Qin Chen

    IPC分类号： G01N21/00 ,  H02H3/00

    CPC分类号： H02H1/0023

    摘要： A sensor to simultaneously detect light and acoustic waves is presented. The sensor includes one or more optical fibers and a diaphragm disposed near one end of at least one of the one or more optical fibers. The diaphragm is configured to vibrate upon incidence of acoustic waves from an arc flash and reflect a light beam into at least the one of the one or more of the optical fibers. A semi-transparent region is disposed around the one or more optical fibers to diffuse light originating from the arc flash into at least one of the one or more optical fibers.

    摘要翻译： 提出了同时检测光和声波的传感器。 传感器包括一个或多个光纤和位于一个或多个光纤中的至少一个的一端附近的隔膜。 隔膜被配置为在从电弧闪光引起的声波入射时振动，并且将光束反射到至少一个或多个光纤中的一个。 半透明区域设置在所述一个或多个光纤周围，以将来自所述电弧闪光的光漫射到所述一个或多个光纤中的至少一个中。

    Gas detection system incorporating fiber gas sensors having fiber bragg gratings
    5.
    发明授权
    Gas detection system incorporating fiber gas sensors having fiber bragg gratings 有权
    含有光纤布拉格光栅的光纤气体传感器的气体检测系统

    公开(公告)号：US08542955B2

    公开(公告)日：2013-09-24

    申请号：US12913950

    申请日：2010-10-28

    申请人： Hua Xia ,  Renato Guida ,  Juntao Wu ,  Axel Busboom ,  Aniceto Bantug ,  Pramod Chamarthy

    发明人： Hua Xia ,  Renato Guida ,  Juntao Wu ,  Axel Busboom ,  Aniceto Bantug ,  Pramod Chamarthy

    IPC分类号： G02B6/00 ,  G01N25/00

    CPC分类号： G01N21/774 ,  G01N21/783

    摘要： A gas detection system is provided for identifying a gas. The gas detection system includes a sensing module with a hollow chamber enclosed by a chamber housing. Additionally, the sensing module includes an optical sensing fiber positioned within the hollow chamber. The optical sensing fiber includes a gas sensor including a fiber Bragg grating positioned at a grating location along the optical sensing fiber, and a sensing layer affixed to an exterior surface of the optical sensing fiber at the grating location. After the gas is directed into the hollow chamber, the sensing layer and the gas exchange heat energy, based in part on a heat transfer coefficient of the gas. The exchange of the heat energy induces a shift in a Bragg resonant wavelength of the fiber Bragg grating which exceeds a threshold shift required for detection, where the shift is used to identify the gas.

    摘要翻译： 提供了用于识别气体的气体检测系统。 气体检测系统包括具有由腔室壳体包围的中空室的感测模块。 此外，感测模块包括位于中空室内的光学感测纤维。 光学传感光纤包括气体传感器，该气体传感器包括沿着光学感测光纤位于光栅位置处的光纤布拉格光栅，以及在光栅位置处固定到光学感测光纤的外表面的感测层。 在将气体引入中空室之后，感测层和气体交换热能部分地基于气体的传热系数。 热能的交换引起光纤布拉格光栅的布拉格谐振波长的偏移，其超过检测所需的阈值偏移，其中使用偏移来识别气体。

    Optical sensors, systems, and methods of making
    6.
    发明授权
    Optical sensors, systems, and methods of making 有权
    光学传感器，系统和制作方法

    公开(公告)号：US08019190B2

    公开(公告)日：2011-09-13

    申请号：US12413648

    申请日：2009-03-30

    申请人： Hua Xia ,  Kevin Thomas McCarthy ,  Juntao Wu ,  Cheryl Zhan

    发明人： Hua Xia ,  Kevin Thomas McCarthy ,  Juntao Wu ,  Cheryl Zhan

    IPC分类号： G02B6/032

    CPC分类号： G02B6/021 ,  G01D5/35303 ,  G01K11/3206

    摘要： An optical fiber sensing cable is disclosed. The optical fiber sensing cable comprises a fiber with a core having an index of refraction n1, and a circumferential surface of the fiber including a nanoporous cladding having an index of refraction index n2. The methods of preparing the fiber sensor cable, including forming the nanoporous cladding and the sensor systems incorporating the optical fiber sensing cable of this invention are also disclosed.

    摘要翻译： 公开了一种光纤传感电缆。 光纤感测电缆包括具有折射率n1的芯的光纤，并且光纤的圆周表面包括具有折射率指数n2的纳米多孔包层。 还公开了制备光纤传感器电缆的方法，包括形成纳米多孔包层和结合本发明的光纤传感电缆的传感器系统。

    Turbomachinery system fiberoptic multi-parameter sensing system and method
    7.
    发明申请
    Turbomachinery system fiberoptic multi-parameter sensing system and method 有权
    涡轮机械系统光纤多参数传感系统及方法

    公开(公告)号：US20090320609A1

    公开(公告)日：2009-12-31

    申请号：US12215094

    申请日：2008-06-25

    申请人： Hua Xia ,  Norman Arnold Turnquist ,  David So Keung Chan ,  Danian Zheng ,  Kevin Thomas McCarthy ,  Richard Joseph Gawrelski ,  Matthew Damian Pietrykowski ,  Alexander Seth Ross ,  Yun Li ,  Juntao Wu

    发明人： Hua Xia ,  Norman Arnold Turnquist ,  David So Keung Chan ,  Danian Zheng ,  Kevin Thomas McCarthy ,  Richard Joseph Gawrelski ,  Matthew Damian Pietrykowski ,  Alexander Seth Ross ,  Yun Li ,  Juntao Wu

    IPC分类号： G01L1/24 ,  G01H9/00 ,  G01B11/00

    CPC分类号： G01L3/12 ,  G01H9/004 ,  G01L3/109 ,  G01M11/081

    摘要： A fiberoptic multi-parameter sensing system for monitoring turbomachinery system shaft static and dynamic torques, vibration modes and associated operation status includes a multi-furcated fiber bundle based optical splitter configured to transmit light to a surface of at least one turbomachinery system shaft through a plurality of optical fiber bundles disposed at a plurality of locations in proximity to the surface of the at least one shaft, in which the plurality of locations together are arranged in a substantially axial direction between the ends of the at least one shaft. The system further includes an array of high-temperature bifurcated fiber bundle based reflectance probes to receive reflectance signals from the shaft surface and send to an array of photosensitive detectors, configured to detect dynamic light reflected from the at least one turbomachinery system shaft surface in response to the transmitted light during rotation of at least one turbomachinery system shaft and generate dynamic reflected light signals there from. A sensing mechanism is configured to determine a torque or vibration on at least one turbomachinery system shaft in response to the dynamic reflected light signal signatures based on time-domain and frequency-domain signal processes.

    摘要翻译： 用于监测涡轮机械系统轴静态和动态扭矩，振动模式和相关操作状态的光纤多参数感测系统包括多分叉光纤束分光镜，其被配置为通过多个透镜将光透射到至少一个涡轮机械系统轴的表面 设置在所述至少一个轴的表面附近的多个位置的光纤束，其中所述多个位置一起在所述至少一个轴的端部之间沿大致轴向布置。 该系统还包括一组高温分叉纤维束的反射探测器，用于接收来自轴表面的反射信号并发送到一组光敏检测器，该阵列被配置为响应于检测从至少一个涡轮机械系统轴表面反射的动态光 在至少一个涡轮机械系统轴的旋转期间的透射光，并且从那里产生动态反射光信号。 感测机构被配置为响应于基于时域和频域信号处理的动态反射光信号特征来确定至少一个涡轮机械系统轴上的扭矩或振动。