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Miniature single-station lightning positioning system and method based on acoustic-magnetic synchronous measurement

A lightning positioning system and magnetic synchronization technology, applied in the field of lightning detection, can solve the problems of unsuitable multi-base station positioning, inconvenient and limited equipment installation, etc., and achieve the effect of solving multi-value problems, fast installation and strong mobility

Active Publication Date: 2022-01-14
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of acoustic wave sensors can greatly reduce the cost of the positioning system, but it is also limited by the baseline requirements between base stations. Each microphone array in the system needs to be erected independently. This solution brings inconvenience to equipment installation.
[0007] To sum up, the existing single-station lightning positioning systems are all based on multiple base station arrays, and environments with limited terrain such as remote mountainous areas, aircraft, and ships are not suitable for multi-base station positioning

Method used

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  • Miniature single-station lightning positioning system and method based on acoustic-magnetic synchronous measurement
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  • Miniature single-station lightning positioning system and method based on acoustic-magnetic synchronous measurement

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Embodiment 1

[0047] This embodiment is a miniature single-station lightning location system based on acousto-magnetic synchronous measurement, and its appearance refers to figure 1 .

[0048] refer to figure 2 , the lightning location system includes a magnetic field measurement module, an acoustic wave measurement module, a trigger module, a collection module, a storage module and a calculation module. The trigger module is connected to the sound wave measurement module, the magnetic field measurement module and the sound wave measurement module are respectively connected to the acquisition module, the acquisition module is connected to the storage module, and the storage module is connected to the computing module.

[0049] The magnetic field measurement module includes a magnetic field sensor and a magnetic field signal processing circuit, the magnetic field sensor is connected to the magnetic field signal processing circuit, and the magnetic field measurement module is responsible fo...

Embodiment 2

[0059] This embodiment is a miniature single-station lightning location method based on acousto-magnetic synchronous measurement.

[0060] The magnetic orientation method is to equate the lightning channel as an electric dipole perpendicular to the ground, and use a pair of orthogonal antennas perpendicular to the north-south and east-west directions to measure the horizontal magnetic field (refer to figure 2 ), according to the ratio of the amplitudes of the induction signals on the two antennas to determine the lightning direction. according to Figure 6 It can be seen that, assuming that the lightning in the first quadrant is a negative ground flash, and the direction of the lightning current is upward, the azimuth angle of the incident electromagnetic wave generated by the lightning can be obtained: θ=tan -1 (U EW / U NS ). where U EW is the induced voltage in the east-west direction, U NS is the induced voltage in the north-south direction. According to the Biot-Sa...

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Abstract

The invention discloses a miniature single-station lightning positioning system and method based on acoustic-magnetic synchronous measurement. The method comprises the following steps that the magnetic field measurement module measures a magnetic field signal released by lightning; the trigger module detects a magnetic field signal and triggers acquisition and storage of the magnetic field signal and a sound wave signal; multi-valued removal processing is conducted on the azimuth angle when the lightning generates the incident electromagnetic wave, and calculating is conducted to obtain the real azimuth angle of the lightning generation position; the time difference of the sound wave signals reaching the two condenser microphones is calculated; and the specific position of lightning is calculated according to the real azimuth angle of the lightning generation position and the time difference of the sound wave signal reaching the two condenser microphones. According to the miniature single-station lightning positioning system, the magnetic field sensor and the sonic sensor are used for synchronously measuring lightning, the multi-valued problem of a magnetic orientation method is solved, distance fixing is conducted on the lightning based on a time difference method, and the miniature single-station lightning positioning system is rapid in installation, convenient to maintain, high in maneuverability and low in cost.

Description

technical field [0001] The invention relates to the technical field of lightning detection, in particular to a miniature single-station lightning positioning system and method based on acousto-magnetic synchronous measurement. Background technique [0002] Due to its physical effects such as strong current, scorching high temperature, strong electromagnetic radiation and violent shock wave, lightning can cause casualties or damage objects in an instant and cause adverse social and economic consequences. Lightning location can not only provide key information for lightning forecast and early warning, try to reduce the loss caused by lightning, but also provide scientific basis for in-depth study of lightning electromagnetic signal characteristics and discharge physical process. [0003] The single-station lightning location system refers to using only one station to locate the location of lightning. Chinese invention patent CN 109143218 uses multiple long baseline and short ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 石涛陆高鹏李晓樊艳峰
Owner UNIV OF SCI & TECH OF CHINA