156 results about "Thunder" patented technology

The invention discloses a thunder and lightning monitoring and early warning method and system based on multi-source data fusion, and relates to the technical field of thunder and lightning early warning, and the method comprises the steps: extracting electric field time domain and frequency domain features, magnetic field change features, lightning activity modes and meteorological change features through obtaining atmospheric electric field, magnetic field, lightning activity and meteorological environment data in real time; and constructing multi-source feature data. A time sequence analysis and Bayesian fusion technology is adopted to calculate a correlation weight between data sources, and a fusion feature vector is generated. And establishing a weighted regression model based on the vector, calculating thunder and lightning occurrence probability through dynamic weight distribution, and generating a risk distribution map in combination with geographic information. The method has a closed-loop feedback optimization mechanism, model parameters and weights can be adaptively adjusted according to prediction errors and early warning accuracy, the accuracy, timeliness and environmental adaptability of lightning early warning are improved, and the method is widely applied to the fields of electric power, aviation, buildings and the like.

The invention discloses a multi-mode cooperative local intelligent thunder and lightning grading early warning method and system and a storage medium, and relates to the technical field of meteorological disaster early warning, the multi-mode cooperative local intelligent thunder and lightning grading early warning method comprises the following steps: preprocessing three types of heterogeneous data sources of lightning positioning data, radar cloud picture data and atmospheric electric field data; a unified input reference of space-time alignment is constructed, and then the lightning movement state, the thundercloud movement direction and the lightning occurrence probability are obtained through a lightning movement track prediction module, a thundercloud movement direction obtaining module and a lightning occurrence probability calculation module; fusing the lightning moving state, the thundercloud moving direction and the lightning occurrence probability through a multi-mode dynamic fusion module to obtain a lightning comprehensive risk probability and lightning predicted arrival time, and analyzing the lightning comprehensive risk probability Prisk and the lightning predicted arrival time Tarrival through a grading early warning module to obtain a lightning grading early warning result. The system overcomes the limitation of a single data source, is high in adaptability, and achieves the precise protection and early warning of local thunder and lightning.

The invention discloses a thunder approaching prediction method and device based on multi-source meteorological data, and particularly relates to the technical field of thunder disaster prediction.The method comprises the steps that standardization processing of temporal-spatial resolution unification is conducted on meteorological satellite data, radar data and lightning positioning data, and standardized temporal-spatial input data is generated; then spatial-temporal features are extracted through a depth separable 3D convolution module, and a compressed spatial-temporal feature graph is generated; then, a channel-space double attention mechanism (CPCA) is applied to the compressed feature map for feature optimization; and finally, processing the optimized feature map through a coding-decoding structure, and outputting a thunder and lightning probability distribution map. According to the method, the problem of spatial-temporal resolution difference and physical feature mismatching in multi-source data fusion is innovatively solved, the calculation efficiency is remarkably improved through a lightweight network architecture, the feature expression ability is enhanced by using an attention mechanism, and high-precision prediction of sudden thunder and lightning events is realized.

The invention relates to the technical field of thunder and lightning signal sampling, and discloses a GAN-based thunder and lightning very-low-frequency electromagnetic wave signal up-sampling method, a terminal and a medium. The method comprises the following steps: preprocessing a lightning very-low-frequency low-sampling signal and a real high-sampling signal; constructing a generative adversarial network; the generator is used for extracting initial features from the low-sampling signals and performing residual enhancement, then mapping low-sampling features after residual enhancement to a high-sampling dimension through a feature-guided dynamic interpolation mechanism, and performing correction and signal mapping on intermediate features after interpolation to obtain reconstructed signals matched with a target high-sampling rate; the discriminator is used for reconstructing the authenticity probability of the signal; after a generator and a discriminator are jointly trained by adopting an alternative updating mode of discriminator loss and generator loss, a newly input low sampling signal is preprocessed, and a corresponding reconstruction signal is output through the generator. According to the invention, accurate reconstruction from a lightning very-low-frequency low-sampling signal to a high-sampling signal is realized.

The invention discloses a thunder-vision fusion multi-sensor collaborative sensing system along a railway and an installation and calibration method, and belongs to the technical field of intelligent traffic and environment sensing. Aiming at the problems of low target detection precision, poor multi-source data fusion timeliness, dependence on manpower on sensor installation and calibration and the like in a complex scene along a railway, the system provides an innovative architecture of'layered sensing-dynamic fusion-autonomous calibration '. The multi-modal sensor array of a laser radar, a millimeter-wave radar, a visible light camera and a thermal infrared imager is deployed; autonomous optimization of sensor pose parameters is realized by using track geometric constraint and a deep learning model; an edge computing node and a cloud collaboration platform are integrated, and real-time target tracking, intrusion early warning and equipment state diagnosis are supported. Experiments show that the target detection accuracy rate of the system is greater than or equal to 98.5%, the false alarm rate is less than or equal to 0.3% and the self-calibration error of sensor installation parameters is less than 0.05 degree in the scenes of rain and fog, night, high-speed movement and the like, which are improved by more than 40% compared with the traditional scheme.

The invention provides a directional ultra-short strong field electromagnetic pulse generation device, a plasma channel is formed through laser targeting gas and ultra-short strong field electromagnetic pulses are generated, the device comprises a high-power laser, a laser focusing module, a gas target module and a vacuum cavity, the high-power laser is used for generating femtosecond laser pulses and emitting the femtosecond laser pulses into the vacuum cavity; the laser focusing module is arranged in the vacuum cavity and is used for focusing femtosecond laser pulses generated by the high-power laser onto the gas target; the gas target module is arranged in the vacuum cavity and used for generating a high-density gas target and spraying the high-density gas target upwards, and a gas spraying opening of a gas target nozzle is located below the laser focus and can be adjusted in an electric control mode. According to the invention, escape electrons with charge quantity larger than that of a solid target and a low-density gas target can be generated, and laser forms arc discharge similar to thunder and lightning cloud in near-critical density plasma to generate EMP, so that electromagnetic radiation which is stronger than that of the solid target and far better than that of a common gas target can be generated.

The invention provides an active train sensing system and method based on thunder and vision fusion. Comprising an acquisition module used for acquiring multi-path image data containing different focal length images and three-dimensional point cloud data corresponding to the front of a train; the time synchronization module is used for generating synchronous image data and synchronous three-dimensional point cloud data; the coordinate transformation module is used for establishing a spatial transformation relation between the three-dimensional point cloud coordinate system and the image coordinate system; the image sensing module is used for inputting the synchronous image data and the three-dimensional point cloud data into the target segmentation network to obtain track coordinates; the point cloud sensing module is used for obtaining three-dimensional point cloud data in front of the train; and the thunder-vision fusion module is used for distributing an accurate center representative coordinate for each obstacle, generating structured obstacle information and outputting the structured obstacle information to a vehicle-mounted train control system. The multi-source sensing information utilization rate can be improved, the track obstacle recognition and three-dimensional positioning precision is improved, and the system sensing stability in a complex scene is enhanced.

The invention discloses a multi-physical field test device based on simulation of thunder and dust coupling, belongs to the technical field of climate simulation tests, and provides the following scheme that the multi-physical field test device comprises a test bin, and an upper sealing assembly is arranged above the test bin; the upper sealing assembly is lifted upwards, so that the sealing cloth is pulled open in advance to keep the test bin sealed, the lower sealing assembly is driven by the sliding rod to move upwards, the rotary clamping assembly drives the test piece to be separated from the sealing ring upwards, meanwhile, the protective cover makes contact with the sealing ring, and at the moment, the load bearing plate is lifted upwards by a certain height for material taking operation; in this way, the sealing effect of the test bin can be achieved, sand and dust are effectively prevented from overflowing from the cavity in the sample taking-out process, waste of sand and dust resources is reduced, pollution of the sand and dust to the external test environment is avoided, the environment maintenance cost in the test process is reduced, the sample taking and placing process is controlled through a pure mechanical structure, and the test efficiency is improved. And the damage of strong electromagnetic interference generated during lightning simulation to the power control system is avoided.

The invention relates to the technical field of thunder and lightning monitoring and protection, in particular to a thunderbolt positioning and energy analysis method and system based on a lightning rod monitoring network. The method comprises the following steps: collecting and verifying a lightning current waveform and a microsecond timestamp in real time, and measuring grounding resistance regularly; the terminal carries out filtering analog-to-digital conversion on the signal and extracts characteristic parameters, after packaging, the priority is set according to the current amplitude, and the priority is uploaded to the cloud platform; the cloud platform is associated with multi-terminal synchronous data, when the number of effective terminals is not less than three, coordinates of a thunderbolt point are calculated, integral operation is performed on a lightning current waveform in combination with actually measured grounding resistance to quantify single-time lightning stroke energy, and historical data are analyzed by using a long-short-term memory network model to realize equipment health diagnosis and life prediction. And displaying the thunderbolt point distribution thermodynamic diagram and the state evaluation report through a visual interface. According to the invention, the whole process management from data acquisition to intelligent decision making is realized, and the accuracy and predictability of lightning monitoring and protection are improved.

The invention discloses an overhead ground wire non-outage direct current deicing method, medium and system, and the method comprises the steps: determining the length of an overhead ground wire section to be deiced according to the obtained overhead ground wire parameters, overhead ground wire icing conditions and meteorological environment parameters; according to the resistance corresponding to the length of the ground wire section, the overhead ground wire parameter, the icing condition and the meteorological environment parameter, obtaining an ice melting current; calculating a lightning current value according to the overhead ground wire parameters and the lightning current peak value; if the maximum ice-melting current is greater than or equal to the thunder current value, reducing the length of the ground wire section until the maximum ice-melting current is less than the thunder current value; if the maximum ice melting current is smaller than the lightning current value, insulation transformation is carried out on the ground wire; and connecting the transformed ground wire section with a direct-current ice melting device to form an ice melting loop, and carrying out direct-current ice melting without power failure. According to the invention, lightning protection and ice melting are taken into consideration, the ice melting work is completed while lightning protection is maintained, and the reliability and the safety of uninterrupted power supply ice melting of the overhead ground wire in severe weather of a power system are improved.

The invention discloses a very high frequency broadband radiation source positioning method based on energy weighted subspace fitting, and relates to the technical field of signal processing and radiation source imaging, and the method comprises the steps: carrying out the DFT processing of a lightning very high frequency broadband signal collected by an array, and obtaining any narrowband component; then characteristic decomposition is carried out on covariance matrixes of X-axis and Y-axis sub-arrays according to array receiving signals, main characteristic vectors are taken as signal sub-spaces, in order to emphasize the signal sub-spaces with higher energy, characteristic values are used for weighting, weighted signal sub-spaces are constructed, then the signal sub-spaces are fitted by using a least square method, and the signal sub-spaces with higher energy are obtained; the method comprises the following steps: further constructing a sub-band energy weighted spatial spectrum adapted to a very high frequency broadband signal, then carrying out spectrum peak search on the weighted spatial spectrum to obtain a spatial angle of a spectrum peak, and finally calculating the direction of arrival of a radiation source according to a spatial angle relation to obtain an azimuth angle and an elevation angle. According to the invention, aiming at a lightning very-high-frequency weak radiation source positioning problem, a lightning channel can be inverted more clearly.

The invention discloses a 750kV power transmission line plateau type integrated lightning protection method and system, and relates to the technical field of power systems, and the method comprises the steps: collecting the data of a plateau region through the Internet of Things to construct a plateau data set, carrying out the lightning correlation feature screening of the plateau data set, obtaining lightning features, and carrying out the preprocessing of the lightning features, and obtaining pure features; the method comprises the following steps: collecting data of a plateau region through the Internet of Things to construct a plateau data set, performing lightning strike associated feature screening on the plateau data set to obtain lightning features, and preprocessing the lightning features to obtain pure features; establishing a comprehensive evaluation model, and inputting the pure features into the comprehensive evaluation model to obtain a feature comprehensive score; constructing and training a thunderstorm prediction model based on LSTM, and inputting the feature comprehensive score into the thunderstorm model to obtain a thunder and lightning activity prediction value; and dividing a risk interval for the lightning activity prediction value, and making a corresponding lightning protection measure according to the risk interval.

The invention relates to the technical field of thunder and lightning mode recognition, and discloses a thunder and lightning intelligent target early warning method and system for a local key target, and the method comprises the steps: collecting target feature description, estimating storm motion information based on lightning positioning data and radar echo images at continuous moments, and carrying out the recognition of a thunder and lightning mode. And generating a risk corridor in the upstream direction of each target area, and forming a target area around the target area in combination with the risk corridor. Unified spatio-temporal data is obtained, spatio-temporal feature extraction is carried out to obtain storm features, cross-modal correlation selection and weighting are carried out on the storm features with target feature description as a drive, and target features are constructed. And generating an early warning result in a predetermined time window according to the target feature. And when the thunder risk probability reaches an early warning threshold and the spatial risk distribution intersects with the buffer range of the target area, generating targeted early warning information. According to the invention, thunder and lightning targeted early warning is realized, the hit rate is improved, and false alarms are reduced.

The utility model discloses a lightning protection mechanism of a power distribution cabinet for power transmission, and belongs to the technical field of power transmission equipment. The device mainly comprises a synchronous driving unit, the synchronous driving unit is installed at the top of the power distribution cabinet and drives a retracting and releasing unit to rotate at the top of the power distribution cabinet, the retracting and releasing unit comprises a worm, a worm gear and a rotating rod, the worm is in meshed connection with the side wall of the worm gear, and the rotating rod is in key connection with the interior of the worm gear. One end of each rotating rod is rotationally connected to the inner side wall of the power distribution cabinet through a bearing seat, the other end of each rotating rod is fixedly provided with a lightning protection unit, and the synchronous driving unit is matched with the retracting and releasing unit, so that flexible retracting and releasing of the lightning protection units are achieved. In no thunder and lightning weather, the lightning protection unit can be recycled into the power distribution cabinet, external environment erosion is reduced, and the service life of the lightning rod, the insulating base and other components is prolonged.

The invention provides a vehicle-mounted mobile lightning test system which comprises a vehicle-mounted chassis, a hydraulic lifting and overturning platform and an impulse voltage generator, the hydraulic lifting and overturning platform is arranged on the vehicle-mounted chassis, and the impulse voltage generator is arranged on the hydraulic lifting and overturning platform. And the impulse voltage generator can overturn under the action of the hydraulic lifting and overturning platform. According to the vehicle-mounted mobile thunder and lightning test system provided by the invention, through the design of the hydraulic lifting and overturning platform, the impulse voltage generator can be adjusted to be in a horizontal posture during transportation, so that the transportation height and the gravity center are reduced, and the road transportation requirements are met; in a test site, the impulse voltage generator can be overturned to a vertical posture, the height and space requirements required by the test are met, and the requirements of direct lightning stroke effect test and airworthiness conformity verification of large tested objects such as low-altitude aircrafts and wind power blades in a non-fixed laboratory environment can be met.

The invention discloses a strain tower lightning arrester mounting structure adaptive to a coastal multi-thunder and typhoon area. The problems that a traditional lightning arrester cannot meet the protection requirement of a strong thunder area and is insufficient in wind load resistance and overturning resistance during mounting are solved. Wherein the lightning arrester comprises a lightning arrester body and a fixed base, the lightning arrester body is fixed on a strain tower body support through the fixed base, and a set distance is arranged between the lightning arrester body and a strain insulator; the fixed base is provided with a lightning arrester position adjusting structure which is used for adjusting the mounting position of the lightning arrester; the lightning arrester is reinforced by a double-insulator cable-stayed supporting assembly, the double-insulator cable-stayed supporting assembly comprises two cable-stayed insulators, the inclined lower ends of the cable-stayed insulators are connected with the lightning arrester, and the inclined upper ends of the cable-stayed insulators are connected with the tension tower body support.

The utility model belongs to the technical field of lightning protection, and particularly relates to a cage-shaped lightning arrester in a high mountain area, which comprises an upper lightning guide ring, a lower lightning guide ring and a plurality of unit lightning rods, the plurality of unit lightning rods are annularly distributed around a set area of a high mountain area, the set area is used for installing electronic equipment, and the height of the upper end of the electronic equipment is smaller than that of the spire of any unit lightning rod; the upper lightning guide ring is electrically connected with the upper portions of all the lightning rods, and the lower lightning guide ring is located below the upper lightning guide ring and electrically connected with the lower portions of all the lightning rods. According to the scheme, the plurality of unit lightning rods are arranged in multiple directions, so that the lightning protection effects of the electronic equipment in different directions are effectively improved, and the electronic equipment is suitable for high mountain areas where lightning strokes frequently occur; in addition, the lightning conductor rings are used for electrically connecting all the unit lightning rods, so that electrical conduction between adjacent lightning rods is realized, and the lightning protection performance is further improved. Therefore, the direct damage of thunder and lightning to the protected electronic equipment can be effectively reduced.

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 application provides a thunder positioning system and method, and belongs to the technical field of thunder positioning. The system comprises a grating array acoustic demodulator and a composite optical cable. The composite optical cable comprises a communication optical cable and a chirped grating array composite in the communication optical cable. The grating array acoustic demodulator is used for emitting pulsed laser and transmitting the pulsed laser to the composite optical cable. The composite optical cable is used for generating reflected light based on the pulsed laser and returning the reflected light to the grating array acoustic demodulator. The grating array acoustic demodulator is further used for demodulating the reflected light, obtaining strain, and performing thunder positioning based on the strain. The application utilizes the characteristic that the chirped grating array has high spatial resolution, improves the spatial resolution of the thunder positioning system by three orders of magnitude, and further improves the thunder positioning precision.

The invention relates to the technical field of electric power maintenance safety early warning, and discloses an electric power field operation safety active early warning system and method based on behavior analysis. The system comprises an electric power field operation wind speed factor potential safety hazard identification module, an electric power field operation lightning factor potential safety hazard identification module and an electric power field operation environment potential safety hazard early warning module. Intelligent judgment is carried out on the wind speed factor and lightning factor potential safety hazard early warning action of a power grid maintenance operation site, classified and differentiated early warning of the wind speed factor and lightning factor potential safety hazard of the power grid maintenance operation site is achieved, and the intelligence and applicability of power site operation safety management are improved; the power grid safety supervision platform and the mobile terminal intelligently push potential safety hazards of wind speed factors and thunder and lightning factors of power grid maintenance field operation, and intelligent early warning of the potential safety hazards in the power grid maintenance field operation based on natural environment wind characteristic behaviors and thunder and lightning characteristic behaviors is achieved.

1. The name of the design product: packaging stickers (THUNDER super strong ceramic tile back glue single component). 2. The use of the design product: the design product is used for stickers pasted on the packaging. 3. The design points of the design product: the combination of patterns and colors. 4. The picture or photo that best indicates the design points: front view. 5. The design for which protection is sought includes colors. 6. The back of the design product is a part that is not easily visible or invisible during use, so the rear view is omitted; the design product is a thin product, so the left view, right view, top view and bottom view are omitted.

The utility model discloses a self-adaptive anti-thunder energy-saving green building cement curtain wall structure, relates to the technical field of cement curtain walls, and aims to solve the technical problem that an anti-thunder curtain wall is poor in cold-proof effect in cold and thunder areas, the self-adaptive anti-thunder energy-saving green building cement curtain wall structure comprises a plurality of cement curtain walls, and heat preservation plates are installed on the two sides of each cement curtain wall. Wherein one heat preservation plate is connected with a metal curtain wall, a grounding electrode is arranged at the bottom of the metal curtain wall, a copper strip lightning arrester is connected to the top of the metal curtain wall, sealing pieces are installed in gaps among the multiple cement curtain walls, self-adaptive mechanisms are arranged on the sealing pieces, and a plurality of stabilizing mechanisms are arranged on the periphery of one end of each self-adaptive mechanism. The expansion characteristic of a polyethylene material is utilized, the electric lead is connected with the metal curtain wall, and the self-adaptive mechanism is matched with the stabilizing mechanism, so that self-adaptive expansion sealing and fastening stability can be realized, the sealing performance and the overall fastening performance of the curtain wall structure are enhanced, and the influence of external environmental factors is effectively resisted.

The application discloses a heavy-load railway catenary reliability prediction method and system under thunder weather, and the method comprises the following steps: acquiring historical lightning strike data of the heavy-load railway catenary, and establishing a thunder generation model according to the historical lightning strike data of the heavy-load railway catenary; continuously dividing and sorting time periods of thunder weather at equal intervals, in each time period, using a density-based clustering algorithm to perform spatial clustering on lightning position information to obtain a thunder clustering cluster of each time period; combining thunder parameters to identify a region in which thunder occurs relatively densely in each clustering cluster, and then predicting a lightning range of a next time period through thunder clustering clusters of previous continuous time periods; combining the predicted lightning range and the thunder generation model to calculate a lightning strike failure probability of the heavy-load railway catenary; and calculating a reliability of the heavy-load railway catenary according to the lightning strike failure probability. The method has high usability and accuracy.

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 belongs to the technical field of thunder and lightning monitoring, and provides a portable thunder and lightning monitoring instrument optimization method meeting multi-scene requirements and a thunder and lightning monitoring instrument, and the protection performance of a protection circuit is improved along with the increase of thunder and lightning alarm thresholds in different scenes. The alarm threshold value is adjusted according to a monitoring scene, the alarm strategy is determined according to comparison of the alarm threshold value and a monitoring evaluation value, and the monitoring evaluation value is determined according to the current magnitude, the number of lightning strokes and the lightning stroke danger degree in the monitoring scene; a power supply mode change-over switch is arranged, and a storage battery power supply mode, a power grid power supply mode and a new energy power supply mode are switched according to the number of lightning strokes and the magnitude of current; according to different monitoring scenes, protection circuits of different forms are added to the current transformer, different alarm strategies are embedded in the alarm module, and different power supply modes are designed for the power supply module, so that the portable lightning monitor can well meet the use requirements under multiple scenes.

The invention discloses a vehicle-mounted thunder and lightning early warning method and system, electronic equipment and a storage medium, and relates to the field of vehicle safety early warning, and the method comprises the steps: obtaining thunder and lightning early warning data of a target vehicle position, target vehicle surrounding electrostatic field intensity data and vehicle surrounding cloud layer charge density data, and the thunder and lightning early warning data comprises a thunder and lightning probability and thunderbolt time; obtaining a lightning risk dynamic arbitration algorithm, wherein the algorithm comprises cloud data verification and local sensing verification; the cloud data verification comprises the following steps: if the lightning probability is greater than a preset threshold and the thunderbolt time is less than a preset time threshold, activating an electric field sensor; the local sensing verification comprises the following steps: if the electrostatic field intensity is greater than a preset threshold value, activating the millimeter wave radar; if the charge density is greater than a preset threshold value and / or the electrostatic field intensity is greater than a preset threshold value, entering risk confidence coefficient calculation; and triggering corresponding early warning and protection actions according to the risk confidence.

The invention relates to the technical field of lightning protection systems, in particular to a lightning protection system for house construction, which comprises at least one group of lightning receiving units, each group of lightning receiving units comprises a lightning receiving rod, a connecting seat and a mounting seat, the mounting seat is used as a fixing reference, the connecting seat is fixedly mounted at the upper end of the mounting seat, and a plurality of plugging ports are formed in the connecting seat; the adjacent lightning receiving units can be connected through the plugging ports, and the lightning receiving rods are installed on the connecting seats. The grounding unit is used for grounding thunder and lightning; one end of the downlead is connected with the lightning arresting unit, and the other end of the downlead is connected with the grounding unit; the lightning arresting rod comprises a lightning guiding end located at the upper end, a fixed end connected with the mounting base and an insulating ring connected with the lightning guiding end and the fixed end, a sliding groove is concavely formed in the lower end face of the lightning guiding end, a connecting protrusion protrudes out of the upper end face of the fixed end, the insulating ring surrounds the connecting protrusion, and a conductive block is arranged in the sliding groove in a sliding mode; the device has the effects of plug-in expansion and fault self-isolation cut-off.

The utility model discloses a lightning protection eyebolt for a wind-driven generator, which particularly relates to the technical field of bolts and comprises an eyebolt part for mounting the wind-driven generator. A lightning protection conduction piece is arranged outside the eyebolt piece; the conduction piece comprises a conductive column, a packaging cylinder is arranged on the rear side of the conductive column, a conductive rod used for being connected with the conductive column is installed in the front end of the packaging cylinder, a connecting wire used for being connected with a grounding wire is installed at the rear end of the conductive rod, and the rear end of the connecting wire penetrates through the packaging cylinder and extends out of the rear end of the packaging cylinder. According to the utility model, the conductive column is connected with the eyebolt piece, so that the conductive column can conduct high-voltage current on the eyebolt piece to the conductive rod, and then the high-voltage current is conducted to a grounding wire through the connecting lead on the conductive rod, so that lightning current on the eyebolt piece can be conducted and dispersed to the ground; damage of thunder and lightning to the wind-driven generator is avoided, and then the use performance of the wind-driven generator is guaranteed.

The invention relates to the technical field of tunnels, and provides a tunnel fire source positioning method, device and system and a storage medium, and the method comprises the steps: starting a thundersight all-in-one machine to carry out tunnel space scanning through responding to a tunnel fire alarm instruction, and obtaining first tunnel environment information observed by the thundersight all-in-one machine; the method comprises the following steps: acquiring first tunnel environment information, determining a first fire source position according to the first tunnel environment information, sending the first fire source position to a fire water monitor, controlling the corresponding fire water monitor to perform tunnel space scanning according to the first fire source position, and acquiring second tunnel environment information observed by the fire water monitor, and determining the position of a second fire source according to the second tunnel environment information, and obtaining the fusion positioning position of the fire source by adopting a formula. Based on acquisition and analysis of multi-scene experimental data, dynamic optimization and adaptive configuration of key weights and parameters of the system are realized, the fire source positioning accuracy, reliability and anti-interference capability are greatly improved, and the probability of false alarm and missing alarm is effectively reduced.

The invention discloses a thunder and lightning protection intelligent control method and system based on multi-dimensional data. A view construction unit constructs a three-dimensional panoramic view, a regional three-dimensional view and an equipment parameter view; the association unit establishes a bidirectional mapping relationship between the three-dimensional panoramic view and the regional three-dimensional view, associates a protection node of the three-dimensional panoramic view to an equipment model corresponding to the regional three-dimensional view through a risk type label, and associates the equipment model to the protection node of the three-dimensional panoramic view through an equipment type label; and the interactive display unit matches protection nodes and / or real-time risk data and equipment type labels corresponding to the labels in the three-dimensional panoramic view and the regional three-dimensional view and displays the protection nodes and / or the real-time risk data and the equipment type labels. The system is deeply coupled with a meteorological big data platform and an intelligent emergency system to construct a multi-azimuth collaborative thunder and lightning safety system, integrates data acquisition, analysis, control and visualization, and performs real-time monitoring, intelligent evaluation and quick response on thunder and lightning activities, so that the thunder and lightning protection efficiency and effect are greatly improved, and safe and stable operation of key infrastructures is guaranteed.