强激光与粒子束, 2013, 25 (11): 2869, 网络出版: 2013-11-14
基于啁啾布喇格光栅的液位传感器
Liquid-level sensor based on chirped-fiber Bragg gratings
光纤传感器 液位传感器 液位测量 啁啾光纤布喇格光栅 fiber optic sensor liquid-level sensor liquid-level measurement chirped-fiber Bragg grating
摘要
设计了一种基于啁啾光纤布喇格光栅的新型液位传感器,该传感器主要由矩形悬臂梁构成的传感机构和光纤光谱仪组成。导出了啁啾光纤布喇格光栅的反射谱带宽与液位的关系;通过光谱仪检测啁啾光纤布拉格光栅反射谱的带宽,就可以得到被测液位的高度。并对设计的传感器系统进行了实验验证,实验结果表明,该啁啾光纤布拉格光栅反射谱带宽对温度变化不敏感,且在测量范围内,反射谱带宽与被测液位间有很好的线性关系。
Abstract
A novel liquid-level sensor based on a chirped-fiber Bragg grating (CFBG) is proposed. It is mainly constituted of a rectangular cantilever beam sensing mechanism and a fiber optic spectrometer. The expression of relationship between the liquid-level and the bandwidth of the reflection spectra of CFBG is derived. The liquid-level can be obtained by measuring the bandwidth of the reflection spectral of CFBG. The experimental results show that the reflection spectrum bandwidth of a CFBG is insensitive to temperature changes within the measuring range, and a good linear relationship of the bandwidth of the reflection spectrum with the measured liquid-level is obtained.
杨淑连, 盛翠霞, 魏芹芹, 何建廷, 宿元斌, 申晋. 基于啁啾布喇格光栅的液位传感器[J]. 强激光与粒子束, 2013, 25(11): 2869. Yang Shulian, Sheng Cuixia, Wei Qinqin, He Jianting, Su Yuanbin, Shen Jin. Liquid-level sensor based on chirped-fiber Bragg gratings[J]. High Power Laser and Particle Beams, 2013, 25(11): 2869.