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1. CN108802832 - Magnetic sensor for magnetotelluric detection

Office China
Application Number 201810623934.9
Application Date 15.06.2018
Publication Number 108802832
Publication Date 13.11.2018
Grant Number 108802832
Grant Date 20.08.2019
Publication Kind B
IPC
G01V 3/08
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
08operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
G01V 3/40
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
3Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination or deviation
40specially adapted for measuring magnetic field characteristics of the earth
CPC
G01V 3/087
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
3Electric or magnetic prospecting or detecting
08operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
087the earth magnetic field being modified by the objects or geological structures
G01V 3/40
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS
3Electric or magnetic prospecting or detecting
40specially adapted for measuring magnetic field characteristics of the earth
Applicants INSTITUTE OF GEOLOGY AND GEOPHYSICS, CHINESE ACADEMY OF SCIENCES
中国科学院地质与地球物理研究所
Inventors WANG ZHONGXING
王中兴
ZHANG TIANXIN
张天信
DI QINGYUN
底青云
YANG YUJIE
杨玉洁
XU TAOTAO
许滔滔
PEI RENZHONG
裴仁忠
Agents 北京众达德权知识产权代理有限公司 11570
Title
(EN) Magnetic sensor for magnetotelluric detection
(ZH) 一种用于大地电磁探测的磁传感器
Abstract
(EN)
The invention discloses a magnetic sensor for magnetotelluric detection. The magnetic sensor comprises a magnetic core, combined induction coils, control circuits, combined feedback coils and a selector switch module. The magnetic core is used for receiving excitation current generated by the control circuits, and thereby generating magnetic flows. The combined induction coils are used for inducing and receiving magnetic field signals and transmitting the magnetic field signals to the control circuits. The control circuits are used for processing and outputting the magnetic field signals, generating excitation current and transmitting the same to the magnetic core, and generating feedback current and transmitting the same to the combined feedback coils. The combined feedback coils are usedfor converting the circuit feedback current into magnetic fields. The selector switch module is used for switching and selecting combination and connection relations among the combined induction coils, the combined feedback coils and the control circuits. The magnetic sensor has the advantages that the problems of single function and small frequency band range of a traditional magnetic sensor aresolved, usage range of the magnetic sensor is expanded greatly, and measurement accuracy of magnetic sensor is increased.

(ZH)
本发明公开了一种用于大地电磁探测的磁传感器,包括:磁芯,其用于接收由控制电路产生的激励电流,进而产生磁通;感应组合线圈,其用于感应接收磁场信号并将所述磁场信号传输给控制电路;控制电路,用于对所述磁场信号进行处理并输出,同时产生激励电流传输至磁芯,产生反馈电流传输至反馈组合线圈;反馈组合线圈,其用于将电路反馈电流转化为磁场;切换开关模块,其用于切换选择感应组合线圈、反馈组合线圈与控制电路的组合连接关系。采用本发明所述的磁传感器,解决了传统磁传感器功能单一、频带范围小的问题,极大的拓展了磁传感器的使用范围,并且提升了磁传感器的测量精度。