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System and method for keeping optimal sensitivity of magnetometer

A sensitivity and magnetometer technology, applied in the direction of measuring magnetic variables, measuring devices, instruments, etc., can solve the problems of large pulse current, high power consumption, etc., and achieve the effect of accurate magnetic field measurement, reduced power consumption, and reduced power consumption

Active Publication Date: 2020-10-30
BEIJING INST OF CONTROL ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can maintain the sensitivity of the magnetometer measurement, but because the set and reset operations require a large pulse current, it brings a large power consumption to the system.

Method used

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  • System and method for keeping optimal sensitivity of magnetometer
  • System and method for keeping optimal sensitivity of magnetometer
  • System and method for keeping optimal sensitivity of magnetometer

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Embodiment Construction

[0045] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0046] A system for maintaining optimal sensitivity of a magnetometer, the specific implementation of which is:

[0047] like figure 2 As shown, the main components are S magnetic sensor 1 , setting and resetting module 6 , residual error estimation module 5 , switch 1 module 7 , switch 2 module 8 and output control module 9 .

[0048] The installation and configuration of the four magnetic sensors of the invention system are as follows: figure 1 As shown: X magnetic sensor 2, Y magnetic sensor 3 and Z magnetic sensor 4 are installed orthogonally in pairs; S magnetic sensor 1 is installed obliquely, and is connected to X magnetic sensor 2, Y magnetic sensor 3 and Z magnetic sensor 4 The installation angles between are respectively α...

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Abstract

The invention relates to a system and a method for keeping the optimal sensitivity of a magnetometer, which can be used for automatically calibrating in real time and keeping the optimal sensitivity of the magnetometer, and are suitable for application occasions such as satellite-borne magnetometers and the like which are continuously tested for a long time and cannot be manually calibrated. The three orthogonal magnetic sensors are subjected to data processing and setting and resetting operations under different judgment thresholds of the residual error module by adding the oblique S magneticsensor, so that the system can keep the optimal sensitivity in real time, meanwhile, the setting and resetting operations of the three orthogonal magnetic sensors are remarkably reduced, and the power consumption of the system is greatly reduced. The measurement accuracy and optimal sensitivity of the system can be remarkably maintained, the power consumption of the system is reduced by reducingthe setting and resetting operation times of the system, and the reliability of the system is also improved.

Description

technical field [0001] The invention relates to a system and method for maintaining the optimal sensitivity of a magnetometer, which can be used for real-time automatic calibration and maintaining the optimal sensitivity of the magnetometer, and is suitable for long-term continuous testing of space-borne magnetometers, which cannot be manually calibrated application occasions. Background technique [0002] The magnetometer based on the anisotropic magnetoresistance effect (AMR) has the advantages of high sensitivity, small size, and easy installation, and can be used to assist in measuring changes in the attitude of low-orbit satellites. Configured AMR magnetic sensor configuration. The basic structure of the AMR magnetic sensor is a Wheatstone bridge composed of four magnetoresistances. When an external bias magnetic field is applied to the bridge, the magnetization direction of the two oppositely placed resistors will rotate towards the direction of the current, and the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/09
CPCG01R33/096G01R33/0035
Inventor 刘吉利孟超李建朋付明睿胡隽李恺李建鹏谷宝娟刘琦岳文杰
Owner BEIJING INST OF CONTROL ENG
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