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    Fringe locking subsystem and methods of making and using the same
    4.
    发明授权
    Fringe locking subsystem and methods of making and using the same 有权
    边缘锁定子系统及其制作和使用方法

    公开(公告)号：US08363224B2

    公开(公告)日：2013-01-29

    申请号：US12751476

    申请日：2010-03-31

    申请人： Sandip Maity ,  Sameer Dinkar Vartak ,  Umakant Damodar Rapol

    发明人： Sandip Maity ,  Sameer Dinkar Vartak ,  Umakant Damodar Rapol

    IPC分类号： G01B9/02

    CPC分类号： G01N21/45

    摘要： A fringe locking subsystem for an optical sensing cavity is provided. The subsystem comprises one or more photo detectors that detect a reference signal and a cavity signal; a first amplifier that generates a calculated differential between the reference signal and the cavity signal; a lock-in amplifier that generates a modulation signal based on the calculated differential; and a controller that adjusts a distance within the cavity based on the modulation signal.

    摘要翻译： 提供了用于光学感测腔的边缘锁定子系统。 子系统包括检测参考信号和腔信号的一个或多个光电检测器; 第一放大器，其产生所述参考信号和所述腔信号之间的计算差分; 锁定放大器，其基于所计算的差分产生调制信号; 以及基于所述调制信号来调整所述腔内的距离的控制器。

    FRINGE LOCKING SUBSYSTEM AND METHODS OF MAKING AND USING THE SAME
    5.
    发明申请
    FRINGE LOCKING SUBSYSTEM AND METHODS OF MAKING AND USING THE SAME 有权
    FRINGE锁定子系统及其制造和使用方法

    公开(公告)号：US20110242542A1

    公开(公告)日：2011-10-06

    申请号：US12751476

    申请日：2010-03-31

    申请人： Sandip Maity ,  Sameer Dinkar Vartak ,  Umakant Damodar Rapol

    发明人： Sandip Maity ,  Sameer Dinkar Vartak ,  Umakant Damodar Rapol

    IPC分类号： G01B9/02

    CPC分类号： G01N21/45

    摘要： A fringe locking subsystem for an optical sensing cavity is provided. The subsystem comprises one or more photo detectors that detect a reference signal and a cavity signal; a first amplifier that generates a calculated differential between the reference signal and the cavity signal; a lock-in amplifier that generates a modulation signal based on the calculated differential; and a controller that adjusts a distance within the cavity based on the modulation signal.

    摘要翻译： 提供了用于光学感测腔的边缘锁定子系统。 子系统包括检测参考信号和腔信号的一个或多个光电检测器; 第一放大器，其产生所述参考信号和所述腔信号之间的计算差分; 锁定放大器，其基于所计算的差分产生调制信号; 以及基于所述调制信号来调整所述腔内的距离的控制器。

    ARC DETECTOR
    8.
    发明申请
    ARC DETECTOR 审中-公开
    ARC检测器

    公开(公告)号：US20080288189A1

    公开(公告)日：2008-11-20

    申请号：US11747970

    申请日：2007-05-14

    申请人： Ravinuthala Ramakrishna Rao ,  Umakant Damodar Rapol ,  Thangavelu Asokan ,  Satyanarayana Murthy Ungarala

    发明人： Ravinuthala Ramakrishna Rao ,  Umakant Damodar Rapol ,  Thangavelu Asokan ,  Satyanarayana Murthy Ungarala

    IPC分类号： G01R31/08 ,  G01R31/02

    CPC分类号： H02H1/0015 ,  G01R31/1227

    摘要： A system and method for identifying an arcing event in electrical distribution equipment. The system includes memory for storing an arcing radio frequency characteristic indicative of an arcing event generated in electrical distribution equipment and a noise radio frequency characteristic indicative of background electrical noise and a sensor for detecting radio frequency signals resulting from the arcing event and propagating wirelessly from the electrical distribution equipment. The system also includes a processor for processing the radio frequency signals detected by the sensor to extract radio frequency characteristics from the detected signals and including a comparator for comparing the extracted frequency characteristics to the arcing radio frequency characteristic and the noise radio frequency characteristic stored in memory to identify occurrence of an arcing event. The system also includes an arc alarm generator for generating an arc fault signal indicative of the occurrence of the arcing event.

    摘要翻译： 用于识别配电设备中的电弧事件的系统和方法。 该系统包括存储器，用于存储指示在配电设备中产生的电弧事件的电弧射频特性和指示背景电噪声的噪声射频特性，以及用于检测由电弧事件产生的射频信号并从无线传播的传感器 配电设备。 该系统还包括处理器，用于处理由传感器检测的射频信号，以从检测到的信号中提取射频特性，并包括比较器，用于将所提取的频率特性与存储在存储器中的电弧射频特性和噪声射频特性进行比较 以识别电弧事件的发生。 该系统还包括用于产生指示电弧事件发生的电弧故障信号的电弧报警发生器。