Positioning method and system based on multiple magnetic sensors, electronic device and storage medium

By employing a multi-magnetic sensor positioning method, and utilizing 3D positioning algorithms and covariance intersection fusion algorithms, the problem of inaccurate positioning caused by the easy damage of a single magnetic sensor is solved, achieving high accuracy and reliability in positioning of the target object.

CN116086435BActive Publication Date: 2026-02-06ZHONGBEI UNIV
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Patent Information

Application Number
CN202310065296.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-01-16
Publication Date
2026-02-06
Estimated Expiration
2043-01-16

AI Technical Summary

Technical Problem

In existing technologies, single magnetic sensors are prone to damage or malfunction during target localization, leading to inaccurate localization results.

Method used

A multi-magnetic sensor positioning method is adopted, which utilizes L magnetic beacons, L lock-in amplifiers and M magnetic sensors. Through 3D positioning algorithm and covariance intersection fusion algorithm, the initial position coordinates and final fused position coordinates of the target object are determined, thereby improving the accuracy and reliability of positioning.

Benefits of technology

Even if some magnetic sensors malfunction, the remaining normal magnetic sensors can still be used to accurately locate the target object, thus improving the accuracy and reliability of the positioning.

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Abstract

The application discloses a positioning method and system based on multiple magnetic sensors, electronic equipment and a storage medium, and relates to the technical field of target positioning and orientation. The method comprises the following steps: acquiring magnetic beacon information of L*M magnetic beacons at a position of a magnetic sensor; determining initial position coordinates of the corresponding magnetic sensor according to the magnetic beacon information of L magnetic beacons corresponding to each magnetic sensor by using a 3D positioning algorithm; determining a covariance matrix of the corresponding magnetic sensor according to the initial position coordinates of each magnetic sensor; determining final fused position coordinates according to the initial position coordinates and the covariance matrix of the M magnetic sensors by using a covariance intersection fusion algorithm; and the final fused position coordinates are coordinates of a position of a target object. The application improves the accuracy and reliability of positioning.
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Citation Information

Patent Citations

  • Space positioning method, device and system based on multiple magnetic beacons

    CN107490802A

  • Magnetic positioning method based on spatial multi-point magnetic field intensity information fusion

    CN112649004A