摘要
磁通门磁力计是一种弱磁测量仪器,可以用来测量地磁场。介绍了磁通门磁力计系统的结构和工作原理,并用一维开环系统实现了单方向地磁场分量变化的相对测量;在此基础上,增加三维球状反馈线圈实现了地磁场3个正交方向分量的测量。一维开环系统测量结果显示:在测量方向地磁场的周期以半日周期最为明显;三维系统测地磁场数据统计表明:当日地磁场变化不超过3μT。
Fluxgate magnetometer is a device for the measurement of weak magnetic field, and it can be used to measure geomagnetic fields. The structure and operation principle of the magnetometer are introduced. Threedimensional spherical feedback coils system accomplishes the measurement of three components of geomagnetic field based on the one dimensional open loop system which has been successfully used to get the relative measurement of the earth magnetic field. It shows that half day is the major period of the geomagnetic field in the measurement direction based on one dimensional system. The day fluctuation of geomagnetic field is less than 3 μT based on the data from three dimensional system.
出处
《传感器与微系统》
CSCD
北大核心
2006年第10期10-12,共3页
Transducer and Microsystem Technologies
基金
国家自然科学基金资助项目(10205005)
关键词
地磁场
磁通门磁力计
球状反馈线圈
geomagnetic field
fluxgate magnetometer
spherical feedback coils
作者简介
唐列娟（1977-），女，湖北十堰人，硕士研究生，研究方向为三维磁通门磁力计的研制与地磁场的测量。
