一种双活塞光纤流体差压传感器及其强度补偿性能

A Double Piston Optical Fiber Fluid Differential Pressure Sensor and Its Strength Compensation Performance

本文对一种双活塞光纤流体差压传感器系统及其强度补偿性能进行了研究,首先提出了一种双活塞式的光纤差压传感器探头,基于该探头结构,设计了该光纤差压传感器的检测系统,并对传感器的强度补偿原理进行了分析。最后,对传感器进行了强度补偿实验,得到了不同光源功率时未进行强度补偿的输出电压及强度补偿后传感器的输出值,结果表明:当光源功率发生变化时,光电探测器的输出电压会随之发生较大的变化,最大输出值比最小输出值增大67%左右。经过强度补偿后,传感器左右两检测腔的输出值在检测压力不变的情况下维持在一个定值,不会因为光源功率的波动而发生变化。研究表明,传感器具有较好的强度补偿效果,能够满足检测要求。

In this paper,the optical fiber fluid differential pressure sensor system based on double piston and its strength compensation performance are studied.Firstly,a double piston optical fiber differential pressure sensor probe is proposed.Based on the probe structure,the detection system of the optical fiber differential pressure sensor is designed,and the strength compensation principle of the sensor is analyzed.Finally,the intensity compensation experiment of the sensor is carried out.The output voltage of the sensor without intensity compensation at different light source power and the output value of the sensor after intensity compensation are obtained.The results show that when the light source power changes,the output voltage of the photodetector will change greatly,and the ratio of maximum output value to minimum output value will decrease,The output value increased by about 67%.After intensity compensation,the output value of the left and right detection chambers of the sensor remains at a fixed value under the condition of constant detection pressure,and will not change because of the fluctuation of the power of the light source.The results show that the sensor has good strength compensation effect and can meet the detection requirements.