分析化学2017，Vol.45Issue(7)：980-986,7.DOI:10.11895/j.issn.0253-3820.170012
基于光纤光栅的高压固体压力传感器研究
Research on Solid Pressure Sensor for High-pressureMeasurement Based on Fiber Bragg Grating
摘要
Abstract
Solid internal pressure is one of the important parameters in traffic bridge and defense field.However, the existing testing equipments have the defects of serious electromagnetic interference, poor reliability, and poor accuracy.To overcome the above problems, a fiber bragg grating (FBG) high pressure solid pressure sensor which used thin plates as elastic bearing diaphragm and applied the deflection under pressure to pull the pressure sensitive grating to realize pressure sensing axial displacement was designed.By calculating on the structure according to the measurement range and finite element simulation, its feasibility was confirmed.In the laboratory with constant temperature, the pressure calibration experiment was carried out, and the temperature compensation was performed by the temperature compensation grating in the same temperature field to correct the temperature drift of strain grating.Experimental results showed that the newly devised FBG pressure sensor could sense the pressure as high as 50 MPa, with a linearity of 99.2%.关键词
光纤光栅/压力传感器/承压膜片/温度补偿/零点温漂Key words
Fiber bragg grating/Pressure sensor/Pressure diaphragm/Temperature compensation/Zero temperature drift引用本文复制引用
郭红英,王召巴..基于光纤光栅的高压固体压力传感器研究[J].分析化学,2017,45(7):980-986,7.基金项目
本文系国家自然科学基金 (No.11604304)和山西省高等学校科技创新项目(No.201657)资助 This work was supported by the National Natural Science Foundation of China (No.11604304) （No.11604304）
