Lightning intensity measuring device and method

Abstract

The invention discloses a lightning intensity measuring device and method. The lightning intensity measuring device comprises an alternating power supply, a planar antenna, an induction coil, a filter circuit, a broadband conditioning amplifying circuit, a sampling circuit, an FPGA kernel and a VGA information display module; the planar antenna comprises two copper plates which are parallel to each other, are horizontally arranged and are used for receiving changing electric field signals; the induction coil collects a magnetic field signal generated by the variable electric field and then outputs a tiny voltage signal; and the induction coil is sequentially connected with the filter circuit, the broadband conditioning amplification circuit and the sampling circuit and is used for inputting a voltage signal subjected to high-frequency component filtering and amplification into the sampling circuit for acquisition, transmitting the sampled voltage signal into the FPGA kernel for processing and displaying processed voltage data through the VGA information display module, and the alternating power supply is used for providing an analog voltage signal. According to the invention, the change of an atmospheric electric field can be measured according to the electrical and magnetic characteristics of lightning at different stages, and the high-altitude lightning intensity is reflected by the detected lightning intensity, so that monitoring and prevention are carried out.

Description

technical field [0001] The invention discloses a lightning intensity measuring device and method, and relates to the technical field of atmospheric lightning intensity measurement. Background technique [0002] Lightning is a common weather phenomenon. Before the lightning occurs, due to the strong air current tearing, the impact of ice crystals and water droplets, the cloud layer has a large amount of charge, and the lower cloud layer and the ground induce the opposite charge. When the polarity is greater, the lightning form releases energy. [0003] Physical effects such as high temperature, direct lightning strike, violent shock wave, and strong electromagnetic radiation generated during lightning will interfere with and destroy personnel safety, power supply systems, communication systems, and other production and life. Therefore, monitoring and early warning of lightning is very important. [0004] The measurement of lightning intensity (specifically lightning electric...

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Problems solved by technology

[0004] The measurement of lightning intensity (specifically lightning electric field intensity) is of great significance to the early warning, location and research of lightning phenomena. Traditional lightning measurement has the characteristics of poor anti-interference and low accuracy. The current lightning intensity measurement is based on induced charge and circuit amplification. The same principle, the induced current generated by the release of induced charge caused by the change of the electric field is proportional to the change of the electric field, so the input current signal is integrated, and the change of the obtained voltage signal is proportional to the change of the electric field

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