36 results about "Lightning detection" patented technology

The present application relates to lightning monitoring and strategy optimization technical field, especially a kind of lightning detection station layout method and system based on intelligent optimization algorithm.The site coordinates are used as the initial population satisfying the site position constraint of solution generation, and the individual corresponding to solution is 3N-dimensional vector, corresponding to the three-dimensional coordinates of N sites;Then population iteration is carried out through population mutation, crossing.This application can maintain the higher diversity of individual in the process of individual mutation, and randomly selects multiple parent individuals for mutation.Although the convergence speed is slow in high-dimensional, multi-peak experimental environment, it has stronger global search ability and the advantage of avoiding local convergence.The present application solves the problem that lightning positioning site distribution cannot consider terrain and cannot guarantee detection efficiency and accuracy in the prior art.

The invention belongs to the technical field of radio frequency thunder and lightning positioning, and particularly discloses a wind turbine generator lightning arresting detection method based on radio frequency electromagnetic detection. According to the invention, the initial layout of the directional antenna is planned through the signal-to-noise ratio, the elevation angle and the number of stations in a constrained manner, thereby overcoming the defects that the omnidirectional antenna is low in signal-to-noise ratio and is liable to be interfered in a wind power plant, and achieving the selective focusing of a target airspace and the collection of high-signal-to-noise-ratio data. And station distribution parameters are iteratively optimized by simulating lightning signals, so that the capability of monitoring lightning stroke areas of key components of the fan is enhanced. Time parameters are accurately extracted by using the high gain characteristic of the directional antenna, and high-precision measurement of the time difference of arrival is ensured in combination with a unified time base alignment technology. Finally, a high-resolution three-dimensional lightning stroke channel form is inversely generated based on a spherical propagation model, the problem of detection interference in a complex environment of a wind power plant is systematically solved, and an accurate three-dimensional observation basis is provided for lightning stroke protection design and accident analysis.

The application discloses a thunder and lightning comprehensive detection early warning system and a thunder and lightning detection method thereof, which comprises an atmospheric electric field detection module, a meteorological radar module and a system module. The atmospheric electric field detection module is used for detecting characteristic value A of a thundercloud in a specific area, which at least contains electric field data. The meteorological radar module is used for detecting characteristic value B of the thundercloud in the specific area, which at least contains geographic position data. The system module is used for connecting the atmospheric electric field detection module and the meteorological radar module, and combining the received characteristic value A with the characteristic value B to form thunder and lightning early warning information. The application combines the meteorological radar and the atmospheric electric field equipment, embeds the meteorological radar device into the atmospheric electric field instrument, detects echo data by the radar, converts the echo data into an echo intensity color map, and superimposes the color map on a map to form a thunder and lightning detection early warning radar system.

The invention relates to the technical field of thunder and lightning monitoring and strategy optimization, in particular to a thunder and lightning detection station layout method and system based on an intelligent optimization algorithm. The station coordinates serve as a solution to generate an initial population meeting station position constraints, individuals corresponding to the solution are 3N-dimensional vectors, and the 3N-dimensional vectors correspond to three-dimensional coordinates of N stations; and population iteration is carried out through population variation and crossover. In the individual variation process, multiple parent individuals are randomly selected for variation, and high diversity of the individuals can be kept. In a high-dimensional and multi-peak experimental environment, although the convergence speed is low, the method has the advantages of higher global search capability and avoidance of local convergence. The problems that in the prior art, lightning positioning station distribution cannot give consideration to the terrain, and the detection efficiency and precision cannot be guaranteed are solved.

The invention provides a thunder and lightning three-dimensional detection device and method and a medium, and the device comprises a thunder and lightning detection sensor which outputs thunder and lightning electromagnetic wave signal intensity and initial thunder and lightning three-dimensional angle data; the attitude detection module is used for monitoring real-time attitude data of the thunder and lightning detection sensor; the data processing compensation control module is used for carrying out real-time combined calibration and rectification on the initial thunder and lightning three-dimensional angle data and the real-time attitude data of the thunder and lightning detection sensor, and outputting thunder and lightning angle data after calibration and rectification; according to the device, the attitude change of the sensor can be continuously monitored in the thunder and lightning detection process through the attitude detection module, and the angle deviation is compensated in real time through the data processing compensation control module, so that the device can adjust the azimuth angle measurement value in real time even if the sensor carrier moves or shakes, the continuity and accuracy of positioning data are ensured, and the accuracy of thunder and lightning detection is improved. The hysteresis of off-line calibration is avoided, the automation of direction angle deviation compensation is realized, and the method is suitable for being deployed on an unattended field station or a mobile platform.

The application is a lightning positioning optimization method and system and a medium for correcting the influence of terrain and geological parameters on lightning electromagnetic wave propagation. The method grids the area around the lightning detection station involved in lightning positioning. Using the ground and ionosphere electromagnetic wave propagation model, the time delay correction value and parameter correction coefficient of lightning electromagnetic wave propagation from the preliminary lightning position to the lightning detection station are calculated without considering terrain and geological parameters and considering terrain and geological parameters. When the closest grid point is found as the lightning point in the time delay correction table and parameter correction coefficient table corresponding to the lightning detection station involved in positioning, the time delay correction value and parameter correction coefficient corresponding to each lightning detection station are used to correct the lightning detection station, and the corrected waveform arrival time and corrected characteristic parameters corresponding to each lightning detection station are obtained. The accurate lightning position and accurate lightning characteristic parameters are calculated.

The invention provides an experimental device for testing the performance of thunder and lightning detection equipment based on a real thunder and lightning electromagnetic pulse signal, and relates to the technical field of thunder and lightning detection. The device comprises a lightning detection equipment data acquisition card which acquires an analog quantity waveform in real time, and when a voltage value corresponding to a certain point in the acquired analog quantity waveform exceeds a trigger threshold value, the lightning detection equipment is started; packaging all sampling data points in a preset time length range before and after the moment point, the analyzed time corresponding to the point and the longitude and latitude information of the lightning detection equipment to generate monitoring data, and transmitting the monitoring data to an upper computer; and the upper computer receives the monitoring data, draws a waveform by using written Labview program software and displays time and latitude and longitude information for comparison and verification. The technical problems that the field test period is long, the randomness is high, the risk is uncontrollable, the cost is high, and the difference between the traditional laboratory simulation lightning signal characteristics and the real lightning is large are solved.

The embodiment of the invention provides a power transmission line lightning stroke fault identification method and a lightning detection device. The method comprises the steps that an optical sensing unit is used for capturing lightning optical signals in a preset time period and converting the lightning optical signals into a series of event data; processing the event data, and identifying a target lightning event related to the lightning stroke of the power transmission line; and according to the spatial information of the target lightning event and the geographic information of the power transmission equipment, judging whether the target lightning event causes a fault of the power transmission equipment. Therefore, the influence of the lightning on the power transmission equipment is judged by capturing the optical signal in real time, the lightning detection accuracy can be improved, and the detection accuracy of the lightning on the fault of the power transmission equipment is improved.

Embodiments of the present disclosure provide a lightning waveform identification model training method and a lightning waveform identification method, which are applied to the technical field of lightning detection and identification. The method comprises: synchronously collecting impulse data and double-channel waveform data of multiple sites through a wideband magnetic field sensor; performing time difference positioning and event screening based on the impulse data, matching the corresponding waveform data according to the screening result, binding the waveform data and the true value label corresponding to the event, and forming the labeled training sample as a labeled data set; collecting unlabeled double-channel waveform data as an unlabeled data set, and jointly constituting a mixed data set with the labeled data set and the unlabeled data set; and training a teacher-student model based on the mixed data set to obtain a lightning waveform identification model. In this way, the dependence on artificial labeling in the deep learning model training process can be effectively reduced, and the overall robustness and identification accuracy of the system can be significantly improved in the case of insufficient site quantity.

The application discloses a kind of full lightning activity area diagnostic methods for lightning detection data missing area, including collecting lightning activity data and carrying out space-time consistency matching, carry out convection cloud area and lightning identification, construct lightning label set according to lightning identification result in convection cloud area, carry out feature calculation and obtain multi-dimensional infrared brightness temperature feature, carry out feature screening and obtain multi-dimensional infrared brightness temperature representative feature, according to lightning label set and corresponding multi-dimensional infrared brightness temperature representative feature carry out multi-model integration training and optimization, carry out model evaluation and select comprehensive optimal lightning diagnostic model, input comprehensive optimal lightning diagnostic model and obtain lightning diagnostic result with the multi-dimensional infrared channel brightness temperature data to be diagnosed.It can realize the identification of lightning activity area kilometer level, solve the technical bottleneck of efficient monitoring of lightning activity in remote areas, provide an implementation means for lightning monitoring and early warning in remote areas, thereby effectively supporting the lightning protection and disaster reduction work in the corresponding area.

The present invention relates to the technical field of lightning monitoring, and specifically provides a hybrid baseline lightning detection system and method that integrates two-dimensional and three-dimensional, including: a detection station, a communication network, and a central server; the detection station is used for detecting and preprocessing lightning signals; the communication network is used for realizing data transmission and instruction interaction between the detection station and the central server; the central server is used for collecting the detection information of the detection station and performing lightning analysis based on the detection information. The technical solution provided by the present invention combines the new ideas of broadband detection and hybrid baseline networking, improves the comprehensiveness and accuracy of lightning monitoring, and enhances the multi-scenario applicability and popularization rate of lightning detection and positioning technology.

This utility model discloses a radiation source generating device for verifying the positioning accuracy of a lightning detection system, within the field of lightning detection technology. The device includes a central control unit connected to an arbitrary waveform generator, a GPS receiver, and a radio frequency processing unit, which is connected to an antenna. This enables high-precision positioning accuracy verification of the lightning detection system with adjustable three-dimensional spatial position. Furthermore, the radiation source transmitting device can simulate lightning radiation sources of corresponding frequency bands according to the requirements of different frequency band lightning detection systems. It can accurately record the precise time and spatial position of the lightning radiation source used for network accuracy verification, significantly improving verification accuracy. The device is flexible and lightweight, and can be equipped with a drone, allowing accuracy verification experiments to be conducted at any location within the detection network without involving actual lightning discharge events, thus providing excellent safety.

The invention relates to the field of lightning detection, and discloses a lightning identification method, a lightning detection system, a lightning detection device and electronic equipment, and the method comprises the steps: receiving a lightning identification result, confidence and original lightning data sent by each edge detection end; obtaining a lightning positioning theoretical value based on the analysis of the original lightning data, and obtaining a lightning positioning error through the inversion of the lightning positioning theoretical value; for each edge detection end, the weight of the lightning identification result is calculated by using the lightning positioning error and the confidence coefficient of the edge detection end; and performing weighted voting on the lightning identification result of each edge detection end to obtain a final lightning identification result. In the application, even if a certain edge detection end has a fault or data is inaccurate, the data of other detection ends which work normally can still influence a final result. Through a weighted voting mechanism, data abnormity of an individual detection end can be offset to a certain degree, and the reliability of a lightning identification result is ensured.

The application discloses a magnetic field identification method based on lightning positioning, which adopts the method of independent timing of each time condition to accurately mark and determine the time point based on global clock information, detects and identifies different operation states of the data magnetic field signal sent by a lightning detection station, and waits for the state of the over-threshold effective signal; when the over-threshold effective signal exists, the method starts to find the peak value and records the time point information of the current trigger threshold; after the peak value is determined, the peak point time information is recorded and the method is transferred to the detection of the falling time and the detection of the subsequent peak value intensity. Through the circulation of the method, the lightning signal can be continuously identified and processed.

The invention relates to the technical field of thunder and lightning detection, in particular to an atmospheric electric field prediction method under a Transform hybrid model. According to the invention, the problem of misalignment of time sequences of radar map features and atmospheric electric field signals caused by asynchronism of the radar map features and the atmospheric electric field signals is solved. According to the technical scheme, the method comprises the steps that S1, a target area is determined; extracting radar echo intensity REI data corresponding to all radar image pixel points in the target area; s2, feature extraction and fusion: designing a plurality of artificial features according to a target area of the radar map, and performing deep feature extraction and multi-modal feature fusion based on a CNN (convolutional neural network); and S3, designing a cross-modal attention mechanism to realize dynamic time alignment. The method has the beneficial effects that the space consistency of the radar map and the detection range of the electric field instrument is realized, the noise caused by mismatching of the detection range is avoided, and the pertinence and availability of data are improved.

The application is suitable for the technical field of lightning detection, and particularly relates to a lightning detection method, system, device and medium of unmanned vehicle dynamic networking. The lightning occurrence probability is determined by acquiring the convective effective potential, lifting index, cloud top temperature and lightning frequency of each lightning area; when the lightning occurrence probability of the lightning area exceeds the preset lightning occurrence probability threshold, the area is taken as a target lightning area, and the central coordinates and the estimated radius thereof are determined; according to the central coordinates, the estimated radius, the detection radius and the detection angle of each unmanned vehicle, the initial position coordinates of each unmanned vehicle are determined, and the electric field intensity detection value is collected, so as to determine the lightning positioning result; lightning detection is realized by using the multi-layer unmanned vehicle adaptive formation mode, the high-probability lightning area and the surrounding buffer area can be accurately detected, the three-dimensional spatial position and the electric field intensity distribution of lightning can be accurately reflected, and the lightning positioning precision and the detection accuracy are improved.

The utility model provides a thunder and lightning early warning device, and relates to the technical field of thunder and lightning detection. The thunder and lightning early warning device comprises a mounting piece, a meteorological radar, a thunder and lightning detector and a shell. The meteorological radar is arranged on the mounting piece; the thunder and lightning detector is arranged on the mounting piece and located at the top of the meteorological radar; the shell is arranged on the installation part and covers the weather radar and the thunder and lightning detector. The meteorological radar is responsible for scanning the position, distance, height from the ground, moving trajectory and the like of thunderstorm cloud, the thunder and lightning detector is responsible for atmospheric electric field change, and whether thunder and lightning have occurrence conditions or not is calculated, so that an omnibearing thunder and lightning early warning system is formed. Besides, the housing is arranged outside the meteorological radar and the thunder and lightning detector, so that waterproof and dustproof effects can be achieved, related parts such as the meteorological radar and the thunder and lightning detector in the housing can be effectively protected, and the service life of the thunder and lightning early warning device is prolonged.

This invention relates to the field of lightning detection technology, specifically disclosing a method and apparatus for analyzing lightning density in areas with tall buildings. The method includes: acquiring historical lightning location data for the area with tall buildings; analyzing the distribution characteristics of ground flashes in the historical lightning location data to obtain an expression for the observed lightning density distribution; simplifying the observed lightning density distribution expression to obtain a convolution expression for the observed lightning density; and using the Richardson-Lucy algorithm to iteratively calculate the convolution expression for the observed lightning density to obtain the optimal estimate of the true lightning density. This invention provides a refined analysis of the density distribution of lightning location records in areas with tall buildings and iteratively calculates the convolution expression for the observed lightning density. This solves the problem that, due to lightning location errors, directly applying the small-grid method can lead to a false increase in lightning density values ​​around tall buildings, while the lightning density value at the center is much smaller than the true value.

This application provides a method for identifying lightning strike faults in power transmission lines and a lightning detection device. The method includes: capturing lightning light signals within a preset time period using an optical sensing unit and converting them into a series of event data; processing the event data to identify target lightning events related to lightning strikes on power transmission lines; and determining whether the target lightning event has caused a fault in the power transmission equipment based on the spatial information of the target lightning event and the geographical information of the power transmission equipment. This allows for the assessment of the impact of lightning on power transmission equipment through real-time capture of light signals, improving the accuracy of lightning detection and thus enhancing the accuracy of detecting lightning-induced faults in power transmission equipment.

The invention relates to the technical field of lightning protection detection, in particular to a motorized lightning protection device detection vehicle system which comprises a truck carriage body, a direct lightning detection module, an inductive lightning detection module, a grounding resistance detection module, an insulation resistance detection module, an under-vehicle structure interface and a data processing terminal. The direct lightning detection module and the inductive lightning detection module detect the state of a detected device and transmit data to the data processing terminal through the under-vehicle structure interface, the grounding resistance detection module measures the resistance value of a grounding path of the device, the insulation resistance detection module measures the insulation resistance of the device, and the data processing terminal collects the data of the lightning protection device. The system integrates three detection modules of the direct lightning system, the induction lightning system and the grounding system and troop maneuvering lightning protection equipment, realizes synchronous detection of three lightning protection signals, the detection probability is greater than or equal to 95%, and the maneuverability is improved by 40%.

The application relates to the technical field of lightning detection systems, and discloses an intelligent lightning detection system for traffic road conditions, which comprises a lightning sensor, a data acquisition module and a data processing server. The lightning sensor is arranged along the road, and the data acquisition module is connected with the lightning sensor through an electric signal. The data processing server of the application improves the decision-making efficiency. The application enables the data processing server to efficiently process large-scale data, supports decision-making through the analysis of historical and real-time data. This helps decision-makers to quickly understand the current situation, make wise strategies and policies to cope with the lightning risk on the road, thereby improving the decision-making efficiency. The big data analysis capability allows the server to timely detect the lightning activity risk and provide relevant warning and prediction information. This helps to improve the road safety, reduce the occurrence of lightning-related accidents, and protect the lives and property of drivers, passengers and road users.

The invention relates to the technical field of plateau thunder and lightning detection, in particular to a thunder and lightning positioning precision detection device for a plateau complex terrain and a using method thereof.The thunder and lightning positioning precision detection device comprises a detection device body, the detection device body comprises a supporting seat, a rotating block is arranged at the top of the supporting seat, and a fixing rod is rotationally connected to the inner wall of the rotating block; due to the fact that the complex road surface is often changed along with various meteorological conditions and terrains, the thunder and lightning detection device can monitor thunder and lightning activities in real time and provide accurate early warning, the thunder and lightning detection device can be suitable for being installed on the road surface with the complex terrains when used, and thunder and lightning monitoring accuracy is improved. When the lightning rod receives lightning, a certain impact force can be generated, and the detection device can be instantly and stably supported by the impact force generated by the lightning, so that the damage of mechanical stress generated by lightning impulse to the structure of the detection device can be reduced, and internal electronic elements and a sensor are protected from being damaged.

The invention provides a vehicle active protection alarm system based on thundersight detection, and belongs to the technical field of near-electricity operation, the vehicle active protection alarm system based on thundersight detection comprises a bottom table, a first lifting mechanism, a detection head and an audible and visual alarm, the bottom table comprises a shell, and a power supply, a host and a router which are arranged in the shell, the router is connected with the host through a network cable; the first lifting mechanism is arranged at the top of the bottom table, and the first lifting mechanism is provided with a fixed seat capable of moving up and down; the detection head is rotatably connected to the fixed seat along a first axial direction, the first axial direction is perpendicular to the vertical direction, the detection head is provided with a camera and two laser radars, the two laser radars are located at two opposite sides of the camera, and the camera and the laser radars are both in communication connection with the router; and the audible and visual alarm is arranged at the top of the detection head and is connected with a serial port on the host.

This invention relates to the field of lightning detection technology, and particularly to a method, system, device, and medium for lightning detection using dynamic UAV networking. The invention determines the probability of lightning occurrence by acquiring the convective effective potential energy, lift index, cloud top temperature, and lightning frequency of each lightning region. When the probability of lightning occurrence in a region exceeds a preset lightning probability threshold, that region is designated as the target lightning region, and its center coordinates and estimated radius are determined. Based on the center coordinates, estimated radius, and the detection radius and angle of each UAV, the initial position coordinates of each UAV are determined, and electric field strength detection values ​​are collected to determine the lightning location result. Lightning detection is achieved using a multi-layer UAV adaptive formation method, which can accurately detect high-probability lightning regions and surrounding buffer zones, accurately reflect the three-dimensional spatial location and electric field strength distribution of lightning, and improve the accuracy of lightning location and detection.

A lightning detection sensor is described herein. The lightning sensor includes a sensing element that detects radio frequency (RF) signals associated with lightning activity, a circuit that receives the detected RF signals from the sensing element and amplifies the RF signals for output to a digital signal processing device, and a reference element coupled to the circuit. The reference element is connected to an antenna ground that is isolated from a power supply ground, and the reference element and the antenna ground are not connected to an external ground plane.

The utility model relates to the technical field of pole tower lightning protection and grounding, in particular to a protection mechanism and a distribution line pole tower induction lightning detection device, which comprise a pole tower assembly, a pole tower, a crosspiece connected to the upper end of the pole tower, and an insulator arranged at the top end of the crosspiece; and the discharge assembly is arranged between the pole tower and the crosspiece and comprises a discharge part connected between the crosspiece and the ground and a grounding down lead connected between the pole tower and the ground. The beneficial effects of the utility model are that through the arrangement of the pole tower assembly and the discharge assembly, when the discharge gap breaks down, the current is led to the ground through the grounding lead, and the cement layer of the pole tower is prevented from being broken down and peeled off.

The application belongs to the technical field of lightning monitoring, and particularly relates to a lightning positioning method and system. According to the application process, the serial mode of lightning positioning calculation is converted into a parallel mode through the steps of task division, grouping and recycling of non-participating calculation data, the calculation time is compressed, the utilization rate of lightning detection original data is higher, and the omission of key data is avoided. The grouping process with screening greatly reduces the number of groups involved in single calculation results, thereby eliminating the encountered block points in the execution of the calculation process of the equipment, eliminating the interference of redundant data on calculation, and greatly improving the detection efficiency of the lightning positioning system. It is suitable for popularization in lightning positioning projects.

The embodiment of the utility model discloses a bipolar antenna for lightning detection, relates to the field of lightning detection and positioning, and aims to solve the problems that a monopole antenna is high in grounding requirement, weak in anti-interference capability, high in false alarm probability and the like. The amplifier carries out differential amplification on signals of the induction antenna and the reference antenna and then outputs the signals to an analog-to-digital conversion (ADC) circuit; and digital signals output by the ADC are output to a computer or a DSP (Digital Signal Processor) for further processing.

This invention relates to the field of lightning detection technology, and more particularly to an atmospheric electric field prediction method based on a Transformer hybrid model. This invention solves the problem of temporal misalignment between radar image features and atmospheric electric field signals due to their asynchronous nature. The technical solution of this invention is as follows: Step S1: Determine the target area; extract radar echo intensity (REI) data corresponding to all radar image pixels within the target area; Step S2: Feature extraction and fusion: Based on the target area of ​​the radar image, design multiple artificial features, and perform deep feature extraction and multimodal feature fusion based on a convolutional neural network (CNN); Step S3: Design a cross-modal attention mechanism to achieve dynamic temporal alignment. The beneficial effects of this invention are: achieving spatial consistency between the radar image and the electric field meter's detection range, avoiding noise introduced by the mismatch in detection range, and improving the relevance and usability of the data.

The invention discloses an intelligent monitoring system for multiple lightning strokes of a power transmission and distribution line, relates to the technical field of lightning detection, and solves the problem that in the prior art, a centralized, synchronous and real-time monitoring technology still lacks for key parameters such as the amplitude and the number of impact currents borne by the power transmission and distribution line under multiple lightning strokes and a line lightning stroke point. The system comprises a lightning arrester module, a thunder and lightning detection module, a database module and a multi-source data fusion and analysis module, and through the modules, the monitoring problem of short time interval and multi-feature coupling of multiple lightning strokes is solved in a targeted manner, and the whole-process intelligent monitoring from protection-acquisition-storage-analysis to operation and maintenance decision is realized. A feasible, efficient and intelligent solution is provided for multiple lightning stroke protection of the power transmission and distribution line, safe and stable operation of a power system is guaranteed, the limitation of only depending on electrical parameters or optical images is avoided, and therefore the influence of multiple lightning strokes on the power transmission and distribution line is mastered more comprehensively.