System and method for observing high-speed optics and characteristic spectrum of lightning event

Abstract

The invention provides a lightning event high-speed optical and characteristic spectrum observation system, and the system comprises an atmospheric average electric field detection module which is used for detecting the current atmospheric average electric field amplitude; when the atmospheric average electric field amplitude exceeds a preset threshold value, it is determined that a thunderstorm is about to come, and a thunderstorm coming signal is sent to the control and storage module; the high-speed camera module is used for acquiring a lightning arresting process image; the characteristic frequency band spectrum detection module is used for collecting a lightning stroke lightning receiving specific frequency band spectrum signal waveform; the control and storage module is used for receiving a thunderstorm coming signal sent by the atmospheric average electric field detection module and sending a starting instruction to the triggering light detection module, the high-speed camera module, the characteristic frequency band spectrum detection module and the data acquisition module; the lightning arresting process image acquired by the high-speed camera module and the lightning arresting specific frequency band spectral signal waveform temporarily stored by the data acquisition module are received and stored; and automatic and efficient observation of the lightning arresting process is realized.

Description

Technical Field

[0001] This invention relates to the field of lightning detection and observation technology, specifically to a high-speed optical and characteristic spectral observation system and method for lightning events. Background Technology

[0002] Lightning strikes are one of the main causes of power system failures. The lightning interception process is the most crucial part of the lightning formation process and is the key to determining whether transmission lines and other objects are struck. The lightning interception process is as follows: The descending lightning leader initially develops relatively randomly towards the ground. When it reaches near the ground, it is influenced by targets such as transmission lines and moves towards taller ground objects, potentially converging on transmission lines, towers, and other structures, causing backflashovers, side-strikes, and other faults. Therefore, to improve the effectiveness of lightning protection measures for transmission lines, it is necessary to observe the lightning interception process, especially the optical development process of the lightning channel, to reveal the physical mechanisms and propose more scientific and reasonable analytical methods.

[0003] On the one hand, lightning strikes are short-lived and rapidly developing physical processes, lasting on the order of milliseconds or less. Therefore, observation using high-speed optical imaging is essential. The first challenge in lightning strike observation is effectively detecting lightning strikes and reliably triggering high-speed cameras. On the other hand, high-speed cameras consume significant power, and continuous operation places high demands on equipment reliability. The second challenge is effectively determining whether a thunderstorm is approaching and promptly activating the high-speed camera. Furthermore, lightning strikes involve the superposition of multiple spectral bands. Due to different physical mechanisms, the spectra of different frequency bands exhibit different temporal characteristics. Obtaining the temporal development of characteristic frequency band spectra provides necessary data for studying the physical mechanisms of lightning strikes. It is essential to simultaneously record characteristic spectra during high-speed optical imaging. Currently, there is no automated system or method for conducting high-speed optical and characteristic spectral observations of natural lightning strikes. Summary of the Invention

[0004] To address the aforementioned technical problems and achieve high-speed optical and characteristic spectral automated observation of natural lightning strikes, this invention provides a high-speed optical and characteristic spectral observation system for lightning events, comprising: an atmospheric average electric field detection module, a triggering light detection module, a high-speed camera module, a characteristic frequency band spectral detection module, and a control and storage module.

[0005] The atmospheric average electric field detection module is used to detect the current atmospheric average electric field amplitude; when the atmospheric average electric field amplitude exceeds a preset first threshold, a thunderstorm arrival signal is sent to the control and storage module.

[0006] The trigger light detection module is used to collect light intensity signals. When the amplitude of the light intensity signal is greater than a preset second threshold, it sends a trigger pulse signal to the high-speed camera module and the characteristic frequency band spectrum detection module.

[0007] A high-speed camera module is used to acquire images of the lightning strike process after receiving a trigger pulse signal;

[0008] The characteristic frequency band spectrum detection module is used to acquire the waveform of the spectral signal of a specific frequency band of lightning strike after receiving the trigger pulse signal;

[0009] The control and storage module is used to send an activation command to the trigger light detection module, the high-speed camera module, and the characteristic frequency band spectrum detection module after receiving a thunderstorm arrival signal; and to receive and store the lightning strike process images acquired by the high-speed camera module and the lightning strike specific frequency band spectrum signal waveforms temporarily stored by the data acquisition module.

[0010] Furthermore, it also includes:

[0011] A GPS antenna is used to receive GPS signals and synchronize the time of the observation system using the GPS signals.

[0012] The data acquisition module is used to temporarily store the waveform of the spectral signal of a specific frequency band acquired by the characteristic frequency band spectral detection module during lightning strikes;

[0013] A power control module is used to supply power to the various modules of the observation system;

[0014] The enclosure is used to house the data acquisition module, control and storage module, and power control module.

[0015] Furthermore, when the observation system is started in low-power mode, it triggers the operation of the atmospheric average electric field detection module and the control and storage module; and

[0016] The trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, GPS antenna, and data acquisition module are in standby mode.

[0017] Furthermore, the atmospheric average electric field detection module is a field-milled structure with a measurement range of no less than ±50kV / m.

[0018] Furthermore, the first threshold is 10 kV / m;

[0019] The second threshold includes an amplitude threshold and a steepness threshold, with the amplitude threshold being 200mV and the steepness threshold being 2000V / s.

[0020] Furthermore, the high-speed camera module enters high-speed acquisition mode after receiving the trigger pulse signal sent by the trigger light detection module;

[0021] In high-speed acquisition mode, the high-speed camera module has a shooting rate of no less than 15,000 fps, a resolution of no less than 1 million pixels, a recording time of no less than 500 ms, a pre-trigger time of no less than 200 ms, and a data bit depth of no less than 12 bits.

[0022] Furthermore, the high-speed camera module is also used to temporarily store the images of the lightning strike process.

[0023] Furthermore, the characteristic frequency band spectral detection module consists of photodetectors with center frequencies of 400nm and 780nm;

[0024] The data acquisition module has a maximum sampling rate of no less than 10MS / s and a data bit depth of no less than 12 bits.

[0025] Furthermore,

[0026] The atmospheric average electric field detection module is also used to send a thunderstorm end signal to the control and storage module when the detected current atmospheric average electric field amplitude is less than a preset first threshold.

[0027] The control and storage module is also used to send standby commands to the trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, and data acquisition module after receiving the thunderstorm end signal;

[0028] The trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, and data acquisition module are also used to switch to standby mode after receiving the standby command.

[0029] This invention provides a high-speed optical and characteristic spectrum observation system for lightning events. When a thunderstorm is imminent, the system obtains the current average atmospheric electric field amplitude through an atmospheric average electric field control module, senses the approaching thunderstorm, and sends a thunderstorm arrival signal to a control and storage module. Upon receiving the signal, the control and storage module sends activation commands to a trigger light detection module, a high-speed camera module, and a characteristic frequency band spectrum detection module, activating these modules. The trigger light detection module collects light intensity signals and sends trigger pulse signals to the high-speed camera module and the characteristic frequency band spectrum detection module based on the light intensity signal amplitude. Upon receiving the trigger pulse signal, the high-speed camera module acquires images of the lightning strike process. The characteristic frequency band spectrum detection module, upon receiving the trigger pulse signal, acquires specific frequency band spectral signal waveforms of the lightning strike. This system enables real-time automatic thunderstorm detection and judgment, and efficient automatic observation of the lightning strike process. It automatically generates trigger signals when a lightning strike occurs and acquires specific frequency band spectral signal waveforms of the lightning strike, ensuring high observation efficiency for lightning events. Attached Figure Description

[0030] Figure 1This is a schematic diagram of the structure of a high-speed optical and characteristic spectrum observation system for lightning events provided in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of a method and process for observing high-speed optical and characteristic spectra of lightning events provided by an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the process for observing lightning events and characteristic spectra provided in an embodiment of the present invention;

[0033] Figure 1 In the diagram, 1 is the atmospheric average electric field detection module, 2 is the trigger light detection module, 3 is the high-speed camera module, 4 is the characteristic frequency band spectrum detection module, 5 is the GPS antenna, 6 is the data acquisition module, 7 is the control and storage module, 8 is the power control module, and 9 is the enclosure. Detailed Implementation

[0034] Numerous specific details are set forth in the following description to provide a full understanding of the invention. However, the invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] like Figure 1 As shown, this invention provides a high-speed optical and characteristic spectral observation system for lightning events. This system can automatically detect and activate upon the arrival of a thunderstorm, automatically sense the lightning strike process, acquire high-speed optical images of the lightning interception process, synchronize specific frequency band light intensity change data, and obtain the GPS time of the lightning interception process. The observation data from this system can be used for research on the physical mechanisms of lightning interception processes, as well as for high-precision observation of lightning phenomena on target objects and monitoring of lightning events. The system includes: an atmospheric average electric field detection module, a trigger light detection module, a high-speed camera module, a characteristic frequency band spectral detection module, and a control and storage module.

[0036] The atmospheric average electric field detection module is used to detect the current atmospheric average electric field amplitude; when the atmospheric average electric field amplitude exceeds a preset first threshold, a thunderstorm arrival signal is sent to the control and storage module.

[0037] The trigger light detection module is used to collect light intensity signals. When the amplitude of the light intensity signal is greater than a preset second threshold, it sends a trigger pulse signal to the high-speed camera module and the characteristic frequency band spectrum detection module.

[0038] A high-speed camera module is used to acquire images of the lightning strike process after receiving a trigger pulse signal;

[0039] The characteristic frequency band spectrum detection module is used to acquire the waveform of the spectral signal of a specific frequency band after a trigger pulse signal.

[0040] The control and storage module is used to send an activation command to the trigger light detection module, the high-speed camera module, and the characteristic frequency band spectrum detection module after receiving a thunderstorm arrival signal; and to receive and store the lightning strike process images acquired by the high-speed camera module and the lightning strike specific frequency band spectrum signal waveforms temporarily stored by the data acquisition module.

[0041] The observation system further includes: a GPS antenna for receiving GPS signals and synchronizing the time of the observation system using the GPS signals;

[0042] The data acquisition module is used to temporarily store the waveform of the spectral signal of a specific frequency band acquired by the characteristic frequency band spectral detection module during lightning strikes;

[0043] A power control module is used to supply power to the various modules of the observation system;

[0044] The enclosure is used to house the data acquisition module, control and storage module, and power control module.

[0045] When the observation system is started in low-power mode, it triggers the operation of the atmospheric average electric field detection module and the control and storage module; and triggers the standby of the light detection module, the high-speed camera module, the characteristic frequency band spectrum detection module, the GPS antenna and the data acquisition module.

[0046] The atmospheric average electric field detection module is a field-milled structure with a measurement range of no less than ±50kV / m.

[0047] The first threshold is 10 kV / m.

[0048] The second threshold includes an amplitude threshold and a steepness threshold, with the amplitude threshold being 200mV and the steepness threshold being 2000V / s.

[0049] After receiving the trigger pulse signal sent by the trigger light detection module, the high-speed camera module enters the high-speed acquisition mode. In the high-speed acquisition mode, the high-speed camera module has an image capture rate of no less than 15,000 fps, a resolution of no less than 1 million pixels, a recording time of no less than 500 ms, a pre-trigger time of no less than 200 ms, and a data bit depth of no less than 12 bits.

[0050] The high-speed camera module is also used to temporarily store the images of the lightning strike process.

[0051] The characteristic frequency band spectral detection module consists of photodetectors with center frequencies of 400nm and 780nm.

[0052] The data acquisition module has a maximum sampling rate of no less than 10MS / s and a data bit depth of no less than 12 bits.

[0053] The atmospheric average electric field detection module is also used to send a thunderstorm end signal to the control and storage module when the detected current atmospheric average electric field amplitude is less than a preset first threshold.

[0054] The control and storage module is also used to send standby commands to the trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, and data acquisition module after receiving the thunderstorm end signal;

[0055] The trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, and data acquisition module are also used to switch to standby mode after receiving the standby command.

[0056] Based on the same inventive concept, this invention also provides a method for observing lightning events using high-speed optics and characteristic spectra, such as... Figure 2 Shown, including:

[0057] Step S201: Obtain the current average atmospheric electric field amplitude through the average atmospheric electric field detection module; when the average atmospheric electric field amplitude exceeds a preset first threshold, send a thunderstorm arrival signal to the control and storage module;

[0058] Step S202: After receiving the thunderstorm arrival signal, the control and storage module sends an activation command to the trigger light detection module, the high-speed camera module, and the characteristic frequency band spectrum detection module.

[0059] Step S203: After the trigger light detection module, high-speed camera module, and characteristic frequency band spectrum detection module are turned on, the trigger light detection module collects light intensity signals. When the amplitude of the light intensity signal is greater than the preset second threshold, a trigger pulse signal is sent to the high-speed camera module and the characteristic frequency band spectrum detection module.

[0060] Step S204: After receiving the trigger pulse signal, the high-speed camera module acquires an image of the lightning strike process;

[0061] Step S205: The characteristic frequency band spectral detection module acquires the waveform of the spectral signal of a specific frequency band after receiving the trigger pulse signal.

[0062] Furthermore, it also includes:

[0063] When the atmospheric average electric field detection module detects that the current atmospheric average electric field amplitude is less than a preset first threshold, it sends a thunderstorm end signal to the control and storage module.

[0064] After receiving the thunderstorm end signal, the control and storage module sends a standby command to the trigger light detection module, the high-speed camera module, and the characteristic frequency band spectrum detection module.

[0065] The trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, and data acquisition module are also used to switch to standby mode after receiving the standby command.

[0066] Based on the high-speed optical and characteristic spectrum observation system for lightning events provided by this invention, the process for observing lightning events and characteristic spectra is as follows: Figure 3 Shown, including:

[0067] First, the system generally operates in low-power mode. It senses the arrival of thunderstorms based on the detected average atmospheric electric field amplitude and switches the observation system to high-speed acquisition mode. It uses a photodetector to detect changes in light intensity, senses the occurrence of lightning based on the rate of change of light intensity, and triggers a high-speed camera module to record lightning strike images. Simultaneously, it triggers a specific frequency band spectral detection module to record characteristic spectral light intensity signals. It determines whether the thunderstorm has ended based on the average atmospheric electric field value and switches back to low-power mode.

[0068] The observation system consists of the following modules:

[0069] (1) Atmospheric average electric field detection module: field milling structure, with a measurement range of not less than ±50kV / m;

[0070] (2) Triggering light detection module: The light detection range is not less than 200-1000nm, and it can convert the detected light intensity analog signal into TTL level according to the rise time.

[0071] (3) High-speed camera module: with a speed of not less than 15,000 fps and a resolution of not less than 1 million pixels;

[0072] (4) Characteristic frequency band spectral detection module: center wavelength 400nm, 780nm;

[0073] (5) GPS antenna;

[0074] (6) Data acquisition module: maximum sampling rate not less than 10MS / s, data bit depth not less than 12 bits;

[0075] (7) Control and storage module;

[0076] (8) Power control module;

[0077] (9) Box body;

[0078] When the system is working, the process is as follows: (1) The atmospheric average electric field detection module starts in low power mode. At this time, the atmospheric average electric field detection module and the control and storage module are running, and other modules are in standby. The atmospheric average electric field detection module is responsible for detecting the atmospheric average electric field. When the amplitude exceeds the set threshold, it is determined that a thunderstorm is coming and is fed back to the control and storage module. The threshold is adjustable, and the recommended working value is 10kV / m. (2) The control and storage module starts the high-speed camera module, the trigger light detection module, and the characteristic frequency band spectrum detection module through the control power control module. At the same time, the data acquisition module switches to the maximum sampling rate, and the system switches to high-speed acquisition mode. In high-speed acquisition mode, the high-speed camera module enters the high-speed acquisition state. It is recommended that the shooting rate be no less than 15000fps, the resolution be no less than 1 million pixels, the recording time be no less than 500ms, and the pre-trigger time be no less than 200ms. The characteristic frequency band spectrum detection module is composed of photodetectors with a center frequency of 400nm and 780nm. The data acquisition module has a sampling rate of no less than 10MS / s and a data bit depth of no less than 12 bits. (3) The trigger light detection module continuously collects light intensity signals. When a signal with an amplitude exceeding the threshold and a rising edge steepness exceeding the threshold is collected, a TTL high-level trigger pulse is given. The amplitude threshold and steepness threshold are adjustable. It is recommended that the amplitude threshold be greater than 200mV and the steepness be greater than 2000V / s. (4) After receiving the trigger pulse, the high-speed camera module temporarily stores the image, and the data acquisition module temporarily stores the waveform of the spectral signal in a specific frequency band. The control and storage data module stores the image and waveform signals, as well as the GPS time of the trigger moment. After one recording is completed, a new trigger wait is started. (5) The atmospheric average electric field detection module continues to work. When the amplitude is lower than the threshold, it is determined that the thunderstorm has ended and feedback is given to the control and storage module to shut down the corresponding module and switch back to low power mode.

[0079] This invention provides a high-speed optical and characteristic spectrum observation system for lightning events, which can realize the automatic observation of high-speed optical images and characteristic frequency band spectral signals of lightning strikes and lightning reception processes, and has the following advantages:

[0080] (1) The system of the present invention has the characteristics of low power consumption. When there is no thunderstorm, it operates in the lowest power consumption mode, which alleviates the aging of components such as high-speed camera module and optical detection module.

[0081] (2) To achieve automatic and efficient observation of the lightning strike process, automatically detect and judge when a thunderstorm is about to arrive, and switch to high-speed acquisition mode. When a lightning strike occurs, a trigger signal is automatically generated and the observation data is temporarily stored to ensure high observation efficiency.

[0082] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The present invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, produce implementations of the flowchart illustrations and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0083] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0084] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A high-speed optical and characteristic spectral observation system for lightning events, characterized in that, include: Atmospheric average electric field detection module, trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, control and storage module; The atmospheric average electric field detection module is used to detect the current atmospheric average electric field amplitude; when the atmospheric average electric field amplitude exceeds a preset first threshold, a thunderstorm arrival signal is sent to the control and storage module. The trigger light detection module is used to collect light intensity signals. When the amplitude of the light intensity signal is greater than a preset second threshold, it sends a trigger pulse signal to the high-speed camera module and the characteristic frequency band spectrum detection module. A high-speed camera module is used to acquire images of the lightning strike process after receiving a trigger pulse signal; The characteristic frequency band spectrum detection module is used to acquire the waveform of the spectral signal of a specific frequency band of lightning strike after receiving the trigger pulse signal; The control and storage module is used to send an activation command to the trigger light detection module, the high-speed camera module, and the characteristic frequency band spectrum detection module after receiving a thunderstorm arrival signal; and to receive and store the lightning strike process images acquired by the high-speed camera module and the lightning strike specific frequency band spectrum signal waveforms temporarily stored by the data acquisition module.

2. The system according to claim 1, characterized in that, Also includes: A GPS antenna is used to receive GPS signals and synchronize the time of the observation system using the GPS signals. The data acquisition module is used to temporarily store the waveform of the spectral signal of a specific frequency band acquired by the characteristic frequency band spectral detection module during lightning strikes; A power control module is used to supply power to the various modules of the observation system; The enclosure is used to house the data acquisition module, control and storage module, and power control module.

3. The system according to claim 1 or 2, characterized in that, When the observation system is started in low-power mode, it triggers the operation of the atmospheric average electric field detection module and the control and storage module; and triggers the standby of the light detection module, the high-speed camera module, the characteristic frequency band spectrum detection module, the GPS antenna and the data acquisition module.

4. The system according to claim 1, characterized in that, The atmospheric average electric field detection module is a field-milled structure with a measurement range of no less than ±50kV / m.

5. The system according to claim 1, characterized in that, The first threshold is 10kV / m; and / or; the second threshold includes an amplitude threshold and a steepness threshold, the amplitude threshold being 200mV and the steepness threshold being 2000V / s.

6. The system according to claim 1, characterized in that, The high-speed camera module enters high-speed acquisition mode after receiving the trigger pulse signal sent by the trigger light detection module; In high-speed acquisition mode, the high-speed camera module has a shooting rate of no less than 15,000 fps, a resolution of no less than 1 million pixels, a recording time of no less than 500 ms, a pre-trigger time of no less than 200 ms, and a data bit depth of no less than 12 bits.

7. The system according to claim 1, characterized in that, The high-speed camera module is also used to temporarily store the images of the lightning strike process.

8. The system according to claim 1 or 2, characterized in that, The characteristic frequency band spectral detection module includes photodetectors with center frequencies of 400nm and 780nm; The data acquisition module has a maximum sampling rate of no less than 10MS / s and a data bit depth of no less than 12 bits.

9. The system according to claim 1, characterized in that, The atmospheric average electric field detection module is also used to send a thunderstorm end signal to the control and storage module when the detected current atmospheric average electric field amplitude is less than a preset first threshold. The control and storage module is also used to send standby commands to the trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, and data acquisition module after receiving the thunderstorm end signal; The trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, and data acquisition module are also used to switch to standby mode after receiving the standby command.

10. A method for observing lightning events using high-speed optical and characteristic spectra, characterized in that, include: The current average atmospheric electric field amplitude is obtained through the atmospheric average electric field detection module; When the amplitude of the average atmospheric electric field exceeds a preset first threshold, a thunderstorm arrival signal is sent to the control and storage module. Upon receiving a thunderstorm arrival signal, the control and storage module sends an activation command to the trigger light detection module, the high-speed camera module, and the characteristic frequency band spectrum detection module. After the trigger light detection module, high-speed camera module, and characteristic frequency band spectrum detection module are turned on, the trigger light detection module collects light intensity signals. When the amplitude of the light intensity signal is greater than a preset second threshold, a trigger pulse signal is sent to the high-speed camera module and the characteristic frequency band spectrum detection module. The high-speed camera module acquires images of the lightning strike process after receiving a trigger pulse signal; The characteristic frequency band spectral detection module acquires the waveform of the spectral signal of a specific frequency band after receiving the trigger pulse signal.

11. The method according to claim 10, characterized in that, Also includes: When the atmospheric average electric field detection module detects that the current atmospheric average electric field amplitude is less than a preset first threshold, it sends a thunderstorm end signal to the control and storage module. After receiving the thunderstorm end signal, the control and storage module sends a standby command to the trigger light detection module, the high-speed camera module, and the characteristic frequency band spectrum detection module. The trigger light detection module, high-speed camera module, characteristic frequency band spectrum detection module, and data acquisition module are also used to switch to standby mode after receiving the standby command.

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