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    • 3. 发明授权
    • High speed demodulation systems for fiber optic grating sensors
    • 光纤光栅传感器的高速解调系统
    • US06335524B1
    • 2002-01-01
    • US09176515
    • 1998-10-21
    • Eric UddAndreas Weisshaar
    • Eric UddAndreas Weisshaar
    • G01B1116
    • G01D5/35383
    • Fiber optic grating sensor demodulation systems are described that offer high speed and multiplexing options for both single and multiple parameter fiber optic grating sensors. To attain very high speeds for single parameter fiber grating sensors ratio techniques are used that allow a series of sensors to be placed in a single fiber while retaining high speed capability. These methods can be extended to multiparameter fiber grating sensors. Optimization of speeds can be obtained by minimizing the number of spectral peaks that must be processed and it is shown that two or three spectral peak measurements may in specific multiparameter applications offer comparable or better performance than processing four spectral peaks. Combining the ratio methods with minimization of peak measurements allows very high speed measurement of such important environmental effects as transverse strain and pressure.
    • 描述了光纤光栅传感器解调系统,为单参数和多参数光纤光栅传感器提供高速和多路复用选项。 为了实现单参数光纤光栅传感器的非常高的速度,使用比例技术,允许将一系列传感器放置在单个光纤中,同时保持高速能力。 这些方法可以扩展到多参数光纤光栅传感器。 可以通过最小化必须处理的光谱峰值的数量来获得速度的优化,并且显示在特定多参数应用中的两个或三个光谱峰值测量可提供与处理四个光谱峰值相当或更好的性能。 将比例法与峰值测量的最小化结合使得能够非常高速地测量如横向应变和压力等重要的环境影响。