磁通门经纬仪磁传感器的研制  

Research on the fluxgate sensor of the magnetic fluxgate theodolite

作　　者：范晓勇[1] 滕云田[1] 周勋[1] 周鹤鸣[1] 张炼[1] 

机构地区：[1]中国地震局地球物理研究所,中国北京100081

出　　处：《地震地磁观测与研究》2012年第1期81-87,共7页Seismological and Geomagnetic Observation and Research

基　　金：中国地震局地球物理研究所中央级公益性科研院所基本科研专项(DQJB09B03)

摘　　要：结合磁通门地磁经纬仪的观测特点,对磁通门传感器模型进行理论分析,选择具有高磁导率的1J86坡莫合金,和具有相同热膨胀系数、高塑性、较高持久蠕变强度的GH128合金,分别作为磁芯和骨架材料,采用跑道形磁芯结构作为设计磁通门传感器的核心部分。对设计的磁通门传感器进行技术指标测试,结果表明,实验磁通门传感器优于设计要求。Theoretical analysis of the magnetic fluxgate model was processed combined with the observing characteristic of the magnetic fluxgate theodolite. 1J86 permalloy with high magnetic conductivity and GH128 alloy posess coincident thermal-expansion factor, good plasticity and higher lasting creep strength were chosen as magnetic core and framework material, respectively. Track type structure was adopted as the core component structure in designing magnetic fluxgate sensor; The devised magnetic fluxgate sensor achieved the design requirement in performance index test.

关 键 词：磁通门传感器 磁芯材料 跑道形磁芯 低噪声 温度特性稳定 

分 类 号：P318.6[天文地球—固体地球物理学]