ADAPTIVE FILTERS FOR FIBER OPTIC SENSORS
    16.
    发明申请
    ADAPTIVE FILTERS FOR FIBER OPTIC SENSORS 有权
    适用于光纤传感器的滤光片

    公开(公告)号:US20110204875A1

    公开(公告)日:2011-08-25

    申请号:US12598651

    申请日:2008-05-02

    IPC分类号: G01R19/00

    CPC分类号: G01R15/247

    摘要: Systems and methods according to these exemplary embodiments provide for methods and systems related to optical current and voltage sensors and, more particularly, to filters for use in such sensors.

    摘要翻译: 根据这些示例性实施例的系统和方法提供与光电流和电压传感器相关的方法和系统,更具体地,提供用于这种传感器的滤波器。

    Wide dynamic range sensor signal processing method & circuitry for analog and digital information signals
    19.
    发明申请
    Wide dynamic range sensor signal processing method & circuitry for analog and digital information signals 有权
    用于模拟和数字信息信号的宽动态范围传感器信号处理方法和电路

    公开(公告)号:US20070253719A1

    公开(公告)日:2007-11-01

    申请号:US11820428

    申请日:2007-06-19

    IPC分类号: H04B10/06

    CPC分类号: G01R15/24 G01R21/133

    摘要: A sensor provides an analog sensor output signal that is first converted by a A/D converter, followed by a digital signal processor having a digital signal output that is converted to an analog signal by way of a D/A converter so as to provide an analog information output signal indicative of a parameter quantity intended to be sensed. An analog dither signal and/or a digital dither signal is provided for modulating the A/D converter input signal and/or D/A converter input signal, respectively, separately, or in combination, to enhance dynamic range accuracy of the resultant analog information output signal representative of the quantity of the parameter intended to be sensed.

    摘要翻译: 传感器提供模拟传感器输出信号,该信号首先由A / D转换器转换,随后是具有数字信号输出的数字信号处理器,该数字信号处理器通过D / A转换器转换成模拟信号,从而提供 模拟信息输出信号,指示要被感测的参数量。 提供模拟抖动信号和/或数字抖动信号用于分别或组合地调制A / D转换器输入信号和/或D / A转换器输入信号,以增强所得模拟信号的动态范围精度 输出信号表示要被感测的参数的数量。

    Optical depolarizer
    20.
    发明授权
    Optical depolarizer 有权
    光学去极化器

    公开(公告)号:US06574015B1

    公开(公告)日:2003-06-03

    申请号:US09314240

    申请日:1999-05-18

    IPC分类号: H04K300

    摘要: A system and method for achieving, while using a laser and optical fibers, high signal-to-noise ratio. In particular, the system splits an incoming main light signal into two orthogonal polarization states, which then propagate through an optical circuit before recombining. The use of appropriate path differences ensures that the system is immune from the conversion of mode partition noise to intensity noise arising from the interference between parasitic light waves which traveled through the system in undesired polarization states.

    摘要翻译: 在使用激光和光纤时实现高信噪比的系统和方法。 特别地,系统将输入的主光信号分成两个正交偏振状态,然后在重新组合之前传播通过光电路。 使用适当的路径差异确保了系统免于将模式分区噪声转换为强度噪声,这是由于以不希望的极化状态行进通过系统的寄生光波之间的干扰而引起的。