基于超磁致伸缩材料和光纤光栅的交流电流测量  

Current Measurement Based on Giant Magnetostriction Material and Fiber Bragg Grating

作　　者：姚远[1] 易本顺[1] 肖进胜[1] 

机构地区：[1]武汉大学电子信息学院

出　　处：《武汉理工大学学报》2008年第9期124-127,共4页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(60472025)

摘　　要：利用光纤光栅、超磁致伸缩材料和基于Fabry-Perot滤波器的解调系统实现了交流电流的测量。在介绍超磁致伸缩材料的磁致伸缩效应、光纤光栅检测电流原理的基础上,借助超磁致伸缩材料和光纤光栅等构建了电流测量单元。在施加0—5 A(50 Hz)范围的激励电流时,利用设计的电流测量单元,经基于Fabry-Perot滤波器的解调系统解调,验证了采用该方案检测电流的可行性。The measurement of alternating current （AC） is realized by using fiber Bragg grating （FBG）, giant magnetostriction material （GMM）, and the interrogation technology of Fabry-Perot （F-P） filter. Based on the theoretical analysis of the FBG current measurement, the magnetostrictive effect of GMM, and the interrogation technology of F-P filter are intro- duced as well. The sensing unit of AC current measurement is constructed with GMM and FBG. The feasibility of AC current measurement by using this method was verified, when the AC exciting current is in the scope of 0--5 A.

关 键 词：电流测量 光纤光栅 磁致伸缩效应 波长解调 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]