【摘要】 大型工程如坡体滑移、地基沉降等的变化都属于位移较大的移动。因此根据OTDR的弯曲损耗测试原理,设计了一种基于此原理的组合式光纤传感器,该传感器可以根据实际位移变化的需要改变量程的大小,并对单个该传感器进行了理论推导和试验测试,得出拟合公式。该实验结果可为弯曲损耗位移光纤传感器的开发研究作参考。更多还原

【Abstract】 Great engineering’movement such as slope slippage,groundsill sedimentation is belonged to great displacement motion.A knockdown optical fiber sensor for great displacement was designed based on the bending loss of OTDR and this system can detect measurement range arbitrarily expanded.The theoretical and experimental research on the optical fiber displacement sensor was done and the formula was fitted from the experiment data.The result will be the reference for further research about fiber optical displacement sensors.更多还原