LIU Jing-cheng, REN Xiao-yu, CHEN Xiao-qiang, et al. Fiber-optic current sensor based on F-P[J]. 2009, 28(9): 73-74+78. DOI: 10.13873/j.1000-97872009.09.023.
光纤F-P电流传感器
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。经比较
选择超磁致伸缩棒(Tb0.3Dy0.7Fe1.95)作为核心材料
对光纤F-P传感器实现电流测量的理论进行了研究分析
在解调方式上采用了相位解调法
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。
Abstract
Based on characteristics of anti-electromagnetic interference
good insulation and small volume of optical fiber
a new type of fiber-optic current sensor is given.Tb0.3 Dy0.7 Fe1.95is used as core material.Current measurement theory is analyzed and phase demodulation method is adopted.The mathematical model of the F-P gap is built up and a current measurement equation is given.Some experiments are done.