传感技术学报2016，Vol.29Issue(10)：1602-1605,4.DOI:10.3969/j.issn.1004-1699.2016.10.022
基于V/I转换电路与锁相放大器的磁阻抗测量系统
Magnetic Impedance Measurement System Based on V/I Conversion Circuit and Lock-in Amplifier
摘要
Abstract
In order to realize the low cost and portable application of GMI sensor,a new type of GMI sensor detec⁃tion system is proposed and studied. The novel GMI sensor detection system consists of a signal source ,a V/I con⁃version circuit and a lock-in amplifier. In the range of 1 MHz to 10 MHz excitation signal frequency range,the new test system of NiFe/Cu/NiFe sandwich structure GMI sensor were measured,and with the HP 4194A impedance ana⁃lyzer measurements under the same conditions results are analysis and comparison.The comparison results show that the error range of the system is less than 1.5%when the frequency is 6 MHz.关键词
磁传感器/巨磁阻抗/磁探测/V/I转换锁相放大Key words
magnetic sensor/grant magneto impedance/magnetic detection/V/I converter/phase-locked amplifier分类
信息技术与安全科学引用本文复制引用
樊天麒,刘岩,雷冲,周勇..基于V/I转换电路与锁相放大器的磁阻抗测量系统[J].传感技术学报,2016,29(10):1602-1605,4.基金项目
中国国家自然科学（61273065）；国家科技支撑计划项目（2012BAK08B05）；上海市自然科学（13ZR1420800）；上海交通大学Agri-X（AgriX2015005）；上海交通大学航天先进技术联合研究中心技术创新项目（USCAST2015-2）；航天支撑技术 （）
