降低迟滞误差的光纤光栅传感器的研究  

Research on Reducing Hysteresis Error of New FBG Sensors

作　　者：王宏亮[1] 宋娟[1] 李明[1] 冯德全[1] 樊伟[1] 邬华春[1] 

机构地区：[1]西安石油大学光电油气测井与检测教育部重点实验室,陕西西安710065

出　　处：《光电技术应用》2010年第4期50-53,共4页Electro-Optic Technology Application

基　　金：国家863计划资助项目(2007AA03Z413);国家自然科学基金项目(60727004);陕西省教育厅项目(09JK704)

摘　　要：主要针对传感器的迟滞问题,研制了一种适合做光纤光栅传感器基底材料的恒弹性铌基合金,该合金的弹性后效、弹性滞后作用很低.设计一种新的传感器结构,分别用弹簧钢和新研制的恒弹性铌基合金作基底材料,通过压力实验比较两个传感器的压力迟滞误差.实验结果表明,在0～50 MPa的压力检测范围内,弹簧钢制成的传感器在加压、减压过程中产生了较大迟滞误差,迟滞误差为0.54%;利用新合金制成的传感器迟滞误差非常小,仅为0.099%,在0～50 MPa的范围内实现线性传感.传感器具有温度补偿的功能,能够同时对温度和压力进行测量,很好地解决温度交叉敏感问题,可应用于油气井、大型储油罐等的温度和压力测量.On account of the hysteresis error of the sensor, a new kind of elasticity alloy suitable for a substrate material of the FBG sensor was studied. The elastic after effect and the elastic hysteresis effects of this alloy are very low. A new sensor structure was designed, using elastic steel and newly developed constant elasticity alloy as substrate materials and the two sensors＇ pressure hysteresis errors were compared through pressure experirnent. Experimental results show that the sensor in non-ferrous, made the process of pressure, and by using the new hysteresis error of pressure sensor material retardation is very small, for 0. 099 % error and can be neglected. Sensor has function of temperature compensation, can also measure of temperature and pressure. The sensor can be applied in oil tank, the temperature and pressure etc.

关 键 词：光纤光学 光纤光栅 恒弹性合金 迟滞误差 温度补偿 

分 类 号：TN256[电子电信—物理电子学]