光纤法珀应变传感器波长检测量化误差理论分析

Wave Detection Error Analysis of Fiber Optic F-P Strain Sensing System

介绍了光纤法珀应变传感器的基本原理 ,通过钢衍梁连续加载实验发现了应变误差有规律的跳动现象 ,并在误差理论的基础上深入分析了影响传感器精度的因素 ,提出了光探测器件本身波长感知的不连续性是造成传感器误差的重要原因 ,并对此进行了实验仿真 .验证了我们的分析 。

In the paper, we introduced the basic principle of optical fiber F P sensor, the phenomenon of strain error regular sway in the experiment of truss repetition sequence load. It is emphasis to analyze the reasons affecting the precision of sensor on the basis of the error theory. We put forward that the discontinuousness for wave of optic detector is the important reason of error, a emulational experimentation is designed to prove the analysis. It shows the direction on how to improve the pricision of sensor.