摘要
一个新奇变化三维(3D ) 颤动传感器基于啁啾的纤维布拉格栅栏(CFBG ) 被开发在机械设备领域里测量 3D 颤动。传感器由察觉到单位的三独立颤动组成。每联合起来的使用作为察觉到元素，和察觉到的信号被过滤解调方法的边处理加倍匹配的啁啾的栅栏。传感器的结构和原则理论上被分析，并且它的表演从一些实验被获得，结果如下：操作传感器的频率范围是 10 Hz500 Hz；加速测量范围是 2 m ? 慲吗？
A novel variety of three dimensional （3D） vibration sensor based on chirped fiber Bragg grating （CFBG） is developed to measure 3D vibration in the mechanical equipment field. The sensor is composed of three independent vibration sensing units. Each unit uses double matched chirped gratings as sensing elements, and the sensing signal is processed by the edge filtering demodulation method. The structure and principle of the sensor are theoretically analyzed, and its performances are obtained from some experiments and the results are as follows： operating frequency range of the sensor is 10Hz - 500Hz; acceleration measurement range is 2m.s-2 - 30m.s-2; sensitivity is about 70 mV/m.s-2; crosstalk coefficient is greater than 22 dB; self-compensation for temperature is available. Eventually the sensor is applied to monitor the vibration state of radiation pump. Seen from its experiments and applications, the sensor has good sensing performances, which can meet a certain requirement for some engineering measurement.
基金
This research was funded by the Key Project of National Science Foundation of China, Award Number： 61290311.
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Three-dimensional （3D）
matched
chirped fiber Bragg grating （CFBG）
edge filtering crosstalk demodulation
