18results about "Atmospheric potential difference measurement" patented technology

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.

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.

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 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

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.

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 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.

This disclosure provides a method and related apparatus for determining the location of ultrashort baseline lightning strikes using a multi-antenna monostatic three-dimensional layout. The method utilizes a multi-antenna three-dimensional layout to construct one set of regular pentagonal interferometer arrays without angular error and multiple sets of equilateral triangular interferometer arrays with angular error by different combinations of antennas. The time difference between each VHF antenna of the same pulse signal is obtained by different antenna combinations. Two-dimensional observations without system error are performed using the regular pentagonal interferometer arrays. The two-dimensional observation results with system error obtained from the equilateral triangular arrays are corrected. Then, the two-dimensional information obtained from the regular pentagonal interferometer arrays is used as a reference, and the corrected two-dimensional information obtained from the multiple equilateral triangular interferometer arrays is intersected in three-dimensional space to obtain three-dimensional information. This disclosure can achieve ultra-high-resolution three-dimensional location determination for lightning discharges, and can achieve nanosecond time resolution and digital-meter order spatial resolution of the lightning discharge process.