公开(公告)号：US11519975B2

公开(公告)日：2022-12-06

申请号：US17520745

申请日：2021-11-08

申请人： Institute of Geology and Geophysics, Chinese Academy of Sciences

发明人： Kaixin Yuan ,  Aiming Du ,  Ying Zhang ,  Lin Zhao ,  Shuquan Sun ,  Xiao Feng ,  Zhi Li

IPC分类号： G01R33/04 ,  G01R33/02 ,  G01C17/30 ,  G01C17/28 ,  G01C17/38

摘要： An offset data acquisition method and device of a fluxgate magnetometer are provided by the present disclosure, wherein the offset data acquisition method of the fluxgate magnetometer comprises: controlling the first analog switch, the second analog switch and the third analog switch to change directions within a preset period to obtain eight switch direction combinations between the first analog switch, the second analog switch and the third analog switch; acquiring magnetic field measurement data corresponding to an each of the switch direction combinations; and the magnetic field measurement data comprises x-axis magnetic field measurement data, y-axis magnetic field measurement data and z-axis magnetic field measurement data; and acquiring the offset data based on influence factors of an offset and the magnetic field measurement data within the preset period.