摘要
该文开展了基于偏芯光纤马赫-曾德尔干涉仪和磁致伸缩介质Galfenol构建的光学电流传感系统的实验研究,为“传感器原理”课程中电流传感理论教学环节做实验示范。利用透射光谱中波谷处的光波长解调待测电流信号,相应的电流灵敏度为66.8 nm/A。该传感器提供了一种电流信号测量的替代方法,在电力和电子电路相关行业中具有一定的应用价值。教学实践结果表明:通过引入电流传感系统的实验教学,可激发学生学习兴趣,加深学生对传感系统相关理论知识及实际应用价值的理解,提高学生分析与解决实际问题的能力,取得了良好的教学效果。
In this paper,the experimental research of optical current sensing system based on core-offset fiber Mach-Zehnder interferometer and magnetostrictive medium Galfenol is carried out,which provides an experimental demonstration for the teaching of current sensing theory in the course of“Sensor principle”.The current signal is demodulated through the optical wavelength at the trough in the transmission spectrum,and the corresponding current sensitivity achieves 66.8 nm/A.The sensor provides an alternative method for current signal measurement,and has certain application value in power and electronic circuit related industries.The results of teaching practice show that the teaching of current sensing system can stimulate students’interest in learning,deepen their understanding of relevant theoretical knowledge and practical application value of the sensing system,improve their ability to analyze and solve practical problems,and achieve good teaching results.
作者
于长秋
陈志远
马世昌
周铁军
YU Changqiu;CHEN Zhiyuan;MA Shichang;ZHOU Tiejun(School of Electronic Information,Hangzhou University,Hangzhou 310018,China)
出处
《实验技术与管理》
CAS
北大核心
2021年第12期103-106,共4页
Experimental Technology and Management
基金
杭州电子科技大学教学改革研究项目(YBJG201907)
国家自然科学基金项目(61805061)。
关键词
电流传感
偏芯光纤
马赫-曾德尔干涉仪
current sensing
core-offset fiber
Mach-Zehnder interferometer
