【摘要】 利用光纤抗电磁干扰、绝缘性好,体积小等特性,提出一种新型的光纤电流传感器.该传感器将悬臂梁结构和光纤Fabry-Perot相结合,基于材料力学理论和电磁感应原理,利用Fabry-Perot干涉仪原理来实现对电流的测量.在解调方式上采用了相位解调法,分析了该传感器的工作原理及光纤F-P的测量原理,建立了光纤F-P腔的数学模型,推导出电流检测理论公式,并进行了相关实验,证明该电流传感器具有绝缘性好、结构简单、灵敏度高等优点.更多还原

【Abstract】 Fiber measurement technology has many advantages,such as no electromagnetic interference,good insulation and small volume.A kind of fiber current sensor is giver,which bases material mechanics and electromagnetic induction,and also makes a cantilever beam and F-P together for measurement. Phase demodulation way is adopted in this paper.The sensor principle and measurement principle of F-P are analyzed.This paper builds up the mathematical model of the F-P gap and gave a current measurement equation.At last some experiments are done to validate it.Advantages of this sensor are small volume,high sensitivity and compact structure.更多还原