Low frequency fiber Bragg grating acceleration sensors
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摘要: 為了擺脫電磁干擾對磁電式傳感器的影響,通過對光纖光柵加速度傳感器力學模型分析,建立了加速度與波長變化間的數學模型,設計了低頻光纖光柵加速度傳感器。實驗結果表明,光纖光柵加速度傳感器幅頻帶寬為45 Hz,橫向抗干擾能力為40 dB,能夠滿足工業測量需要。Abstract: To avoid the interference of model between acceleration and wavelength electromagnetism to magnetoelectric sensors, a mathematical was proposed with the analysis of fiber Bragg grating acceleration sensors' mechanical model, and then a low frequency fiber Bragg grating acceleration sensor was designed. With the experiment, the frequency range of amplitude is 45 Hz and the cross-axis disturbance is 40 dB, which means that the sensor can be used in practice.
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Key words:
- fiber Bragg grating /
- acceleration sensor /
- low frequency vibration /
- acceleration /
- wavelength
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