反射式光纤束位移传感器的建模与仿真

Modeling and Simulation of Reflective Optical Fiber Bundle Displacement Sensors

系统地建立了具有普遍适用性的反射式光纤束传感器的理论模型。对于小数目光纤组成的光纤束,通过建立60°角坐标系来分析不同排列形式的光纤束,建立了离散式通用模型;对于大数目光纤组成的光纤束,通过引入轴间距分布密度参量,建立了积分式通用模型;进而给出了组合式光纤束传感器的模型。对常用的几种排列形式的光纤束进行了计算机仿真和分析,并与测量值进行了比对。结果表明,该模型准确有效。

The theoretical models of reflective optical fiber bundle sensors are put forward for their general applicability, which can provide guidance for the design and implement of these sensors. For the bundle with small number of fibers, the discrete common model is proposed by building a 60° coordinate system; for the bundle with large number of fibers, the integral common model is proposed by introducing a parameter called distribution density of the distance between fiber axes; furthermore, the model of combined fiber bundle sensors is introduced. The related computer simulation for several different arrangement types of fiber bundle is presented and compared with the measurement of an experimental sensor. The results show that the models are available.