32results about "Atmospheric potential difference measurement" patented technology

The invention discloses a vehicle active lightning protection early warning and protection system and method based on electric field induction, and relates to the technical field of vehicle safety. According to the invention, multi-source data related to vehicle thunder and lightning risks are obtained and subjected to time synchronization through a multi-source sensing acquisition module, and a standardized data stream is output; the threatening recognition module is used for carrying out separation and mode recognition and outputting threatening event information and credibility indexes; the air breakdown risk assessment module quantifies the breakdown risk near the vehicle; the climate prior fusion module carries out drift correction on prior climate data of month and hour indexes and outputs a corrected risk index; and the fusion decision and execution module takes multiple types of indexes as input, generates a comprehensive risk index, performs grading judgment, outputs a corresponding protection instruction, and controls an execution mechanism to implement a corresponding grading protection action. According to the invention, active early warning and graded protection of the vehicle in the thunder and lightning environment are realized, and the safety of the whole vehicle and passengers and the reliability of an electronic system are improved.

Example systems, methods, and non-transitory computer readable media are directed to determining a geographic site to be assessed for lightning activity over a period of time; obtaining weather information associated with the geographic site, the weather information being generated by a weather prediction model for the period of time, wherein the weather information comprises a grid-based representation of a weather map; determining one or more grid points to assess the geographic site for lightning activity; evaluating weather-related metrics associated with the one or more grid points; determining one or more likelihoods of the geographic site experiencing lightning activity during the period of time based at least in part on the evaluation; and providing weather forecast information for the geographic site, the weather forecast information including at least the one or more likelihoods of the geographic site experiencing lightning activity during the period of time.

The invention discloses a thunderstorm weather assessment method based on rainfall and atmospheric electric field feature weighted fusion. The method comprises the following steps: determining a target area; multi-modal features are extracted; and an IGBDT model is constructed. The invention provides a technical scheme with high physical interpretability and excellent classification performance for severe convection weather monitoring.

The present invention provides an electric field strength acquisition device that improves weather resistance by suppressing the intrusion of rainwater and dust, while also being able to accurately acquire the electric field strength in the atmosphere. [Solution] An electric field strength acquisition device 1 for acquiring electric field strength in the atmosphere comprises: an electric field strength acquisition sensor 10 for acquiring electric field strength; a case member 30 that supports the electric field strength acquisition sensor 10 and is arranged to cover the top and side surfaces of the electric field strength acquisition sensor 10; and a cover member 20 that covers the bottom surface of the electric field strength acquisition sensor 10 and is supported by the case member 30. The cover member 20 is formed in a weight shape and is arranged in a convex shape toward the detection area of ​​the electric field strength acquisition sensor 10. The bottom surface of the cover member 20 is water-repellent. The case member 30 can be made of a non-conductive resin or a conductive material.

To appropriately estimate a lightning current that is a lighting parameter on the basis of a radio wave of lightning observed by lightning location systems (LLS).SOLUTION: A lightning current estimation system associates a situation of an observed radio wave in accordance with which piece of past data the situation of the radio wave is close to from accumulation of past radio wave situations and current situations, estimates a lightning discharge path model M on the basis of an estimated radio wave situation and the accumulated current situations, derives a situation of a current of lightning that has struck the earth 4 from the radio wave of the lightning that has struck an apex 1a of a structure 1 and the lightning discharge path model M, and appropriately estimates the situation of the current of the lightning on the earth 4 where the structure 1 is installed.SELECTED DRAWING: Figure 1

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.

A lightning-strike-danger-level derivation device according to the present invention derives a lightning-strike danger level for each of a plurality of regions defined in the form of a mesh on the basis of latitudes and longitudes. The lightning-strike-danger-level derivation device is provided with: an echo-intensity derivation unit that derives an altitude distribution of echo intensities for each of the plurality of regions by using observation data acquired from a meteorological radar; a temperature derivation unit that derives an altitude distribution of temperatures for each of the plurality of regions by using observation data acquired from a meteorological observation device; a feature derivation unit that derives features used to derive the lightning-strike danger level; and a lightning-strike-danger-level derivation unit that derives the lightning-strike danger level by using the features. The feature derivation unit derives a cumulative echo intensity for each of the plurality of regions, the cumulative echo intensity being a partial or entire cumulative value of echo intensities along the vertical direction. The lightning-strike-danger-level derivation unit derives an altitude distribution of lightning-strike danger levels for each of the plurality of regions by using the cumulative echo intensity and the altitude distribution of temperatures.

This invention discloses a fully automated, three-dimensional active defense system and method, belonging to the field of weather modification technology. The system monitors thunderstorm weather systems via airborne remote sensing satellites, triggering an early warning signal when the system moves to the outermost layer of the defense area. It combines this with a network-based ground-based radar monitoring system to continuously track and monitor thunderstorm cloud weather systems in real time, simultaneously sending various parameters to a lightning monitoring and early warning module. This provides criteria for detecting strong lightning electromagnetic fields, inverts the spatiotemporal parameters of lightning occurrence, and provides early warning and forecasting of the development trend of thunderstorm weather systems. A central control system then determines lightning dissipation and initiates operational commands. Finally, a mobile artificial lightning induction system is used to artificially intervene in the charge structure of thunderstorm clouds. This invention can mitigate the direct and indirect electromagnetic damage effects of strong lightning caused by the spatiotemporal unpredictability of severe convective weather and the instantaneous nature of strong thunderstorm discharge processes, protecting the safety of key locations and important sensitive targets.

An assembly and method for using weather sensors with enhanced modular capability is disclosed. The weather sensor assembly generally comprises a cap module, middle module, and a base module, where the cap module, middle module(s) and the base module are stacked adjacently to provide environmental sealing, weather sensing, and electrical connectivity to the weather sensor assembly. One or more ring mechanisms may be included that interlock the cap module, middle module(s), base module to form the weather sensor assembly into an integrated unit. Moreover, the ring mechanisms enable further modules to be added to the weather sensor assembly for additional capabilities. By doing so, each of the modules in the weather sensor assembly may be independent units that can be removed, reordered, swapped, and added for desired sensing modalities and environments.

The present application provides a thunderstorm activity observation and management system and method applicable to a power transmission channel. The method comprises: acquiring the number of thunderstorm days in each analysis period; respectively adjusting combined with a preset discrepancy threshold so as to obtain a thunderstorm intensity value of each analysis period; determining a voltage intensity coefficient for each analysis period according to line feature data of a power transmission channel acquired in each thunderstorm activity; and determining a thunderstorm activity assessment value according to the above two result values, wherein the thunderstorm activity assessment value is used for determining a defense level, thereby, defense resources can be scientifically allocated according to the defense level.

The invention discloses a ground electric field distribution determination method and device and a medium, and relates to the field of ground electric field distribution determination, and the method comprises the steps: determining a reduced characteristic curve according to known working condition parameters of known electric field distribution; unknown working condition parameters are determined; the known electric field distribution and the unknown electric field distribution correspond to the same wire splitting number; based on the reduced characteristic curve, according to known working condition data and unknown working condition parameters, determining space charge ground electric field distribution under the unknown working condition parameters; based on the conductor radius and conductor height in the known working condition parameters and the unknown working condition parameters, whether space charge field position scaling needs to be carried out or not is judged; if yes, determining ground electric field distribution of unknown electric field distribution based on space charge ground electric field distribution under the scaled space charge field position; and if not, determining the ground electric field distribution of the unknown electric field distribution according to the space charge ground electric field distribution, thereby accurately predicting the ground electric field distribution and avoiding the waste of human resources.

Example systems, methods, and non-transitory computer-readable media are directed to determining geographic sites for which lightning activity is to be evaluated over a period of time; obtaining weather information associated with the geographic site, the weather information being generated by a weather prediction model for the time period, where the weather information comprises a grid-based representation of the weather map; determining one or more grid points to assess lightning activity of the geographic site; evaluating a weather-related metric associated with the one or more grid points; determining one or more likelihood that the geographic site suffers from lightning activity during the time period based at least in part on the evaluation; and providing weather forecast information of the geographic site, the weather forecast information including at least one or more likelihood that the geographic site suffers from lightning activity during the time period.

The invention discloses a boundary layer turbulence dissipation rate inversion method and system based on difference correction. The method comprises the steps of completing deployment of observation data acquisition equipment and data space-time matching of the observation data acquisition equipment; obtaining and preprocessing observation data, and calculating an original turbulence dissipation rate value and a reference turbulence dissipation rate value; calculating a difference value between the original turbulence dissipation rate and the true value of the reference turbulence dissipation rate, and fitting a correction function suitable for different atmospheric conditions according to a relationship between the atmospheric environment and the difference value; and inputting the atmospheric environment parameters into the correction function, determining a correction index difference value, and then correcting the original turbulence dissipation rate to obtain the corrected turbulence dissipation rate. And the requirement on data accuracy in boundary layer turbulence observation is met.

The present application relates to the technical field of lightning protection, in particular to a lightning interceptor for forest lightning stroke area and a lightning current amplitude prediction method. The sensor built-in in the lightning interceptor collects various historical time series data of each monitoring point in each lightning stroke event; based on the fluctuation and difference characteristics of the historical electric field time series data, the field strength weight of each monitoring point is dynamically calculated, and the prominent point position significantly affected by lightning stroke is screened out; further combining the historical electric field and historical meteorological data to generate the predicted electric field time series data of the monitoring point, by analyzing the similarity, spatial position and field strength weight of the historical electric field of the prominent point position, the electric field similarity between the monitoring point and each prominent point position is obtained. Finally, based on the historical meteorological, electric field and lightning current data of the prominent point position, the network model is trained, the data contribution degree is adjusted by using the electric field similarity, the influence of different prominent point positions is learned by the model, and the stability and precision of the lightning current prediction are effectively improved.

To provide a technique capable of easily predicting occurrence of lightning.SOLUTION: A thundercloud detection system 1 includes an electric field meter 10 for observing an electric field in the atmosphere, and a thundercloud detection device 20 for acquiring observation data of the electric field from the electric field meter and detecting thunderclouds on the basis of a fluctuation width of electric field intensity and a fluctuation period of the electric field intensity included in the observation data.SELECTED DRAWING: Figure 1

The invention discloses a lightning early warning system and method based on real-time data analysis. The system comprises a thunder and lightning monitoring and sensing module, a data acquisition and transmission module, a multi-source data fusion module, a real-time data analysis and risk assessment module, an early warning release and linkage response module, a visual monitoring platform and a historical data storage and model optimization module. Through the combination of the multi-source fusion module, the real-time data analysis and risk assessment module and the early warning release and linkage response module, the lightning condition can be analyzed based on real-time data, multi-dimensional lightning sensing, spatio-temporal information fusion and high-precision early warning are realized, early warning response strategies of different levels can be automatically triggered according to the real-time risk level, and the early warning efficiency is improved. Therefore, the thunder and lightning protection capability and the operation safety of the oil depot storage tank area are improved.

To provide an electric field intensity acquisition device capable of improving weather resistance by suppressing intrusion of rainwater, dust or the like, and accurately acquiring electric field intensity in the atmosphere.SOLUTION: An electric field intensity acquisition device 1 for acquiring electric field intensity in the atmosphere includes an electric field intensity acquisition sensor 10 for acquiring electric field intensity, a conductive current collecting plate 20 insulated from the electric field intensity acquisition sensor 10 and disposed on an upper side of the electric field intensity acquisition sensor 10, and a case member 30 disposed to cover the electric field intensity acquisition sensor 10 and the current collecting plate 20 and having a side surface member 31 and an upper surface member 33. The upper surface member 33 is non-conductive and has a conical part 34 formed in a conical shape projecting upward, and an eaves part 35 overhanging to the outside of the side surface member 31 on the lower end side of the conical part 34. In the electric field intensity acquisition sensor 10, the upper end side of the side surface member 31 is covered with the eaves portion 34 in the side view of the case member 30.SELECTED DRAWING: Figure 1

The invention relates to the technical field of lightning protection, in particular to a lightning interceptor for a forest lightning stroke area and a lightning current amplitude prediction method. Collecting various historical time sequence data of each monitoring point in each lightning stroke event through a built-in sensor in the lightning interceptor; dynamically calculating the field strength weight of each monitoring point based on the fluctuation and difference characteristics of historical electric field time sequence data, and screening out prominent point locations which are obviously influenced by lightning stroke; predicted electric field time sequence data of the to-be-monitored point positions are generated by further combining historical electric fields and historical meteorological data, and the electric field similarity of the to-be-monitored point positions and the protruding point positions is obtained by analyzing the similarity between the predicted electric field time sequence data and the historical electric fields of the protruding point positions, the spatial positions and the field intensity weights. Finally, a network model is trained based on historical meteorology, electric field and lightning current data of the highlighted point locations, and the data contribution degree is adjusted by using the electric field similarity, so that the model adaptively learns the influence of different highlighted point locations, and the stability and precision of lightning current prediction are effectively improved.

This invention discloses a vehicle active lightning strike warning and protection system and method based on electric field induction, relating to the field of vehicle safety technology. The invention acquires and synchronizes multi-source data related to vehicle lightning risk through a multi-source sensing and acquisition module, outputting a standardized data stream; a precursor identification module performs separation and pattern recognition, outputting precursor event information and credibility indicators; an air breakdown risk assessment module quantifies the breakdown risk near the vehicle; a climate prior fusion module corrects drift in prior climate data indexed by month and hour, outputting a corrected risk index; and a fusion decision and execution module uses multiple indicators as input to generate a comprehensive risk index, performs hierarchical judgment, outputs corresponding protection commands, and controls the actuators to implement corresponding hierarchical protection actions. This invention achieves active warning and hierarchical protection for vehicles in lightning environments, improving the safety of the entire vehicle and its occupants, as well as the reliability of electronic systems.

To mitigate lightning.SOLUTION: The balloon is raised to penetrate the thundercloud.SELECTED DRAWING: None

To provide lightning influence information to offices as information on, for example, influence on equipment and lightning in a specific area range on the basis of lightning information obtained from a lightning location system (LLS).SOLUTION: A lightning-based information provision system comprises lightning parameter derivation means 1 configured to receive an input of a lightning situation and derive lightning parameters based on the received situation, and lightning information provision means 2 for providing offices 3 with information on influence according to the lightning parameters based on the lightning situation, and is configured to provide the offices with lightning influence information as information on influence on equipment, lightning in a specific area range, and the like.SELECTED DRAWING: Figure 1

To provide a charge distribution estimation device, charge distribution estimation method and program, which enable charge distribution measurement in smaller regions within a thundercloud.SOLUTION: A charge distribution estimation device is provided, comprising a data acquisition unit 11 for acquiring an initial charge distribution within a thundercloud 51, a first computation unit 131 configured to divide a region of the thundercloud 51 into multiple division planes D1-DM to compute neutralizing charge caused by lightning discharge in each of the division planes D1-DM, and a second computation unit 132 configured to compute a charge distribution in each division plane on the basis of the initial charge distribution and the neutralizing charge.SELECTED DRAWING: Figure 2

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.

To artificially suppress phenomena such as temperature increases and abnormal rainfall associated with extreme weather events. [Solution] In order to mitigate the rise in temperature, which is the biggest cause of extreme weather, by evaporating water, absorbent paper is sandwiched between perforated aluminum foil with a pitch of about 1.5 mm to promote water absorption and evaporation, and the outside is sandwiched with wire mesh with a pitch similar to insect netting to create an artificial vascular bundle state.

The lightning strike risk degree derivation device comprises: an echo intensity derivation unit that derives an altitude distribution of echo intensity in a predetermined altitude range for each of the plurality of regions using observation data acquired from meteorological radar; an air temperature derivation unit that derives an altitude distribution of air temperature in the predetermined altitude range for each of the plurality of regions using observation data acquired from a meteorological observation device; a feature amount derivation unit that derives a feature amount to be used to derive a lightning strike risk degree; and a lightning strike risk degree derivation unit that derives the lightning strike risk degree using the feature amount.

This invention provides a lightning detection device that can accurately detect lightning strikes using a bar antenna. [Solution] The lightning strike detection device 1 comprises a bar antenna 10, a detection signal generation circuit that processes the output signal of the bar antenna 10 to generate a detection signal corresponding to the magnetic field detected by the bar antenna 10, and a microcontroller 50 (determination circuit) that calculates the amount of charge Q over a predetermined time T by integrating the values ​​of the detection signals, and compares the amount of charge Q with a predetermined set value QT to determine whether or not lightning has struck the wind turbine 100 (structure).

To provide a lightning strike prediction system capable of improving lightning strike prediction accuracy in a wide lightning generation area (region).SOLUTION: A lightning strike prediction system 1 includes an electrostatic field value acquisition unit 10 for acquiring atmospheric electrostatic field values at a plurality of measurement points Pn arranged in a plurality of areas An, an information acquisition unit 20 for acquiring environmental information in a predetermined range around the measurement points Pn, and a lightning strike probability prediction unit 30 for predicting a lightning strike probability. The area An is set as a predetermined range including one measurement point Pn. The lightning strike probability prediction unit 30 predicts a lightning strike probability for each area An based on the electrostatic field value and the environmental information, and notifies an area An in which the predicted lightning strike probability is equal to or greater than a predetermined threshold value. The lightning strike probability prediction unit 30 predicts a lightning strike probability based on a prediction algorithm generated by using, as learning data, the amount of change in the electrostatic field value and the environmental information in a predetermined period.SELECTED DRAWING: Figure 1

To enable accurate detection of the electric field conditions at low cost in consideration of an influence of static electricity accumulated by a vehicle.SOLUTION: An electric field detection system comprises an electric field sensor 12 mounted in a vehicle 11 to detect information on an electric field in a space the vehicle is located 11 in, and an electric field intensity acquisition unit 19 configured to acquire electric field intensity in the space the vehicle 11 is located in based on the information on the electric field detected by the electric field sensor 12. The electric field intensity is corrected according to information on static electricity accumulated by the vehicle 11 while the vehicle 11 is on the move.SELECTED DRAWING: Figure 4

To accurately estimate the propagation speed of lightning current. [Solution] The radio waves of the lightning discharge path 5 are observed by the radio wave observation means 1, and the propagation speed of the current propagating through the lightning discharge path 5 is derived by the control means 6 based on the inclination time, which is the time it takes for the lightning discharge path 5 to bend within the thundercloud 2, and the height of the thundercloud 2.

Technology is disclosed herein to generate an indication of a potential that a lightning event will result in ignition based on satellite data. In an implementation, a computing system obtains data associated with a lightning event. The data includes a location of the lightning event and one or more measurements of the lightning event captured by a sensor. The computing system identifies characteristics of the lightning event based at least on the one or more measurements. The computing system predicts the ignition potential of the lightning event based at least on the lightning characteristics and the fuels characteristics.