基于纳米晶合金的宽频差分式磁场传感器的研究

英文篇名：Research of Broad Frequency Difference Magnetic Field Sensor Based on Nanocrystalline Alloy
中文刊名：传感技术学报
英文刊名：Chinese Journal of Sensors and Actuators
作者：王言章 ; 程德福 ; 王君 ; 林君
英文作者：WANG Yan-zhang1 ; 2 ; CHENG De-fu1 ; 2 ; WANG Jun1 ; LIN Jun11.Key Laboratory for Geophysical Instrumentation of Ministry of Education ; Jilin University ; Changchun 130061 ; China ; 2.Texas Instrument-Jilin University DSPs Laboratory ; Changchun 130061 ; China
中文关键词：纳米晶合金 ; 差分 ; 补偿 ; 磁感应传感器
英文关键词：nanocrystalline alloy ; difference ; compensation ; magnetic induction sensor
出版日期：2007-09-15
机构：吉林大学地球信息探测仪器教育部重点实验室,吉林大学地球信息探测仪器教育部重点实验室,吉林大学地球信息探测仪器教育部重点实验室,吉林大学地球信息探测仪器教育部重点实验室长春130061吉林大学—美国德州仪器DSP联合实验室,长春130061,长春130061吉林大学—美国德州仪器DSP联合实验室,长春130061,长春130061,长春130061
年：2007
期：09
出版单位：传感技术学报

摘要

介绍了一种基于纳米晶合金的差分式交变磁场传感器结构,给出了传感器磁芯的长径比与有效相对磁导率的关系曲线.为扩展传感器工作频带,对线圈模型的幅频与相频曲线进行仿真,并根据仿真结果设计了补偿电路.所设计传感器标定后的结果表明,该传感器可以在1Hz-10kHz较宽频率范围内保持平坦的灵敏度曲线,可以满足工程中弱磁场探测的需要.
Structure of difference magnetic field sensor based on nanocrystalline alloy is introduced and relationship curve between ratio of length and diameter and effective relative magnetic permeability is offered.To expand working frequency band of the sensor,amplitude-frequency and phase-frequency curve of the loop model were simulated and compensation circuit was designed based on results of the simulation.After calibrating the designed sensor,calibration results show that the sensor has flat sensitive curve in frequency range of 1 Hz-10 kHz and fulfils the needs of feebleness magnetic field detection in engineering.

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