Dynamic measurement method for spatial magnetic field of transmission lines based on two-dimensional electromagnetic sensor matrix

Patent metadata

Field	Value
Publication number	US-2025216432-A1
Application number	US-202418774017-A
Country	US
Kind code	A1
Filing date	Jul 16, 2024
Priority date	Dec 27, 2023
Publication date	Jul 3, 2025
Grant date	—

Abstract

A dynamic measurement method for spatial magnetic field of transmission lines based on two-dimensional electromagnetic sensor matrix is provided. Data measured by an electromagnetic sensor matrix parallel to the transmission lines is used to calibrate an unmanned aerial vehicle (UAV) flight status, while magnetic field distribution characteristics within a profile of the transmission lines are measured using an electromagnetic sensor matrix perpendicular to the transmission lines, thereby achieving dynamic measurement of the spatial magnetic field of the transmission lines during UAV flight. The method achieves measurement of the magnetic field distribution characteristics within the vertical profile of the transmission lines while ensuring that the UAV flies parallel to the transmission lines. The method solves the problem of dynamically measuring the magnetic field distribution during UAV flight and is significant for accurately identifying transmission lines using magnetic field distribution characteristics.

First claim

What is claimed is:

1 . A dynamic measurement method for a spatial magnetic field of transmission lines based on a two-dimensional electromagnetic sensor matrix, wherein a first electromagnetic sensor matrix is arranged parallel to transmission lines and is used for calibrating an unmanned aerial vehicle (UAV) flight status, while a second electromagnetic sensor matrix is arranged perpendicular to the transmission lines and is used for measuring magnetic field distribution characteristics within a vertical profile of the transmission lines; the first electromagnetic sensor matrix parallel to the transmission lines and the second electromagnetic sensor matrix perpendicular to the transmission lines form a two-dimensional electromagnetic sensor matrix; and dynamic measurement for a spatial magnetic field of the transmission lines is achieved through the two-dimensional electromagnetic sensor matrix during UAV flight.

2 . The dynamic measurement method for a spatial magnetic field of transmission lines based on a two-dimensional electromagnetic sensor matrix according to claim 1 , wherein the first electromagnetic sensor matrix is a j×k-order matrix formed by j×k electromagnetic sensors, and j and k are both natural numbers within a range of [3, 5], with j representing the number of rows and k representing the number of columns.

3 . The dynamic measurement method for a spatial magnetic field of transmission lines based on a two-dimensional electromagnetic sensor matrix according to claim 2 , wherein the calibration of the UAV flight status comprises: measuring a magnetic field distribution parallel to the transmission lines by using k electromagnetic sensors in each row of electromagnetic sensor matric containing j rows, wherein if results measured by the k electromagnetic sensors in each row are consistent, it indicates that a UAV is flying along a position parallel to the transmission lines, and if the results are inconsistent, the UAV flight status is adjusted; measuring a magnetic field distribution parallel to the transmission lines by using j electromagnetic sensors in each column of electromagnetic sensor matric containing k columns, and analyzing a magnetic field gradient direction to determine whether it is necessary to adjust a flight altitude of the UAV to keep the UAV at an altitude the same as the transmission lines.

4 . The dynamic measurement method for a spatial magnetic field of transmission lines based on a two-dimensional electromagnetic sensor matrix according to claim 1 , wherein the second electromagnetic sensor matrix is an m×n-order matrix formed by m×n electromagnetic sensors, and m and n are both natural numbers, with m representing the number of rows, within a range of [3, 5], and n representing the number of columns, within a range of [5, 10].

5 . The dynamic measurement method for a spatial magnetic field of transmission lines based on a two-dimensional electromagnetic sensor matrix according to claim 4 , wherein the dynamic measurement comprises dynamically measuring a gradient amplitude value and a gradient direction of the spatial magnetic field of the transmission lines by using m rows of electromagnetic sensors and n columns of electromagnetic sensors arranged in the second electromagnetic sensor matrix perpendicular to the transmission lines, with a calculation formula as follows:

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Assignees

• Hefei Inst Physical Sci Cas
• Anhui Electric Power Trans And Transformation Co Ltd

Inventors

• Zhang Xiuqing
• Chen Xiaojiao
• Lin Shizhong
• He Shiying
• Huang Liansheng
• Yin Youlong
• Lei Jiajie
• Xu Jiawen
• Liu Jun
• Wang Zejing
• Zuo Ying
• Li Lingpeng
• Dou Sheng
• Wang Pujian
• Wang Ying

Classifications

• G05D1/48

  Control of altitude or depth · CPC title

• G05D2111/30

  Radio signals · CPC title

• G05D2107/75

  Electric power generation plants · CPC title

• G05D2105/89

  for inspecting structures, e.g. wind mills, bridges, buildings or vehicles · CPC title

• G01R29/0892

  Details related to signal analysis or treatment; presenting results, e.g. displays; measuring specific signal features other than field strength, e.g. polarisation, field modes, phase, envelope, maximum value · CPC title