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外压式弹性圆筒耐高压光纤光栅压力传感器 被引量:3

Study of the performance of the high-pressure resistant FBG pressure sensor with the exterally pressurized type elastic cylinder
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摘要 设计了一种以金属弹性圆筒为衬底的高压光纤布喇格光栅压力传感器.在温度为16-60℃.压力为O~52MPa的范围内测试了传感器的特性.计算了性能参数及温度修正因子.结果表明.该传磨器性能稳定.重复性好。线性调谐范围为4.066nm。压力灵敏度为0.0782nm/MPa,压力解调的波长分辨率为l.56pm.温度修正后压力测量的相对误差由5.2%减小为0.25%.采用双重密封设计.避免了流体或气体的渗满.通过选择不同弹性模量的材料、内径和壁厚.可调整传感器的量程和灵敏度. A high-pressure resistant fiber Bragg grating(FBG) pressure sensor using a metallic elastic cylinder as the substrate is designed, the properties of the said sensor are tested in the temperature range of 16-60℃ and the pressure range of 0-52 MPa, and its performance parameters and the temperature revise factor are calculated. Results show that the performance of the said sensor is stable, with its repeatability being good, the tuning range of linearity being 4.066 nm, the pressure sensitivity being 0.0782nm/MPa, and the wavelength resolving capability for pressure demodulation being 1.56pm.After the temperature is revised, the opposite error margin of the pressure measure is reduced from 5. 2%to 0. 25%. Double sealing design has been adopted, thus avoiding fluid or gas leakage. By selecting the materials of different elastic moduli, the inner diameter and thickness, the measuring range and sensitivity of the said sensor can be adjusted.
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2006年第4期646-649,共4页 Journal of Xidian University
基金 国家"863"计划资助项目(2002AA313150) 国家自然科学基金资助项目(69877025)
关键词 光纤光学 光纤布喇格光栅传感 压力传感特性 传感器灵敏度 fiber optics in-fiber Bragg grating sensing pressure-sensing-characteristics sensitivity of the sensor
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