GMI电流传感器的研究进展

Progress of the research of Giant Magnetoimpedance effect current sensor

本文介绍了GMI（巨磁阻抗）效应的起源、理论方法以及基于GMI效应电流传感器原理。讨论了GMI电流传感器敏感材料选择标准，列出了能够产生GMI效应的各种材料以及这些材料的软磁特性。叙述了国内外典型的GMI电流传感器设计方案和它们的优缺点。最后展望了GMI电流传感器发展趋势，指出薄膜探头是传感器微型化发展的一个方向。

This paper describes the origin of giant magnetoimpendacne （GMI） effect, the theoretical approaches and the principles of GMI current sensor. The selection criterial of GMI materials of GMI current sensor materials is discussed, various materials of producing GMI effect, and the soft magnetic properties of GMI materials are given. The typical GMI current sensor designs at home and abroad, and their advantages and disadvantages are viewd. Finally, the development trend of GMI current sensor in future are proposed, and the paper points out that the film probes is a development for the miniaturized sensor.