4864 results about "Lightning" patented technology

Methods and articles of manufacture for estimating or deriving weather observations / conditions for any given location using observed weather conditions from neighboring locations, radar data, lightning data, satellite imagery, etc. An initial estimate of weather conditions for a location is made based on a downscaling process using the current conditions the neighboring locations. A measure of corroboration between the radar data and surface weather conditions at official observing stations may be established. Through the results of the downscaling process, radar calibration statistics and estimates of ground-based precipitation, the corroboration can be iteratively tuned, resulting in a weather conditions vector containing associated meteorological fields for locations that lie between or near the sparse network of official observing sites from which an estimate of the weather conditions may be made.

A system and method for changing wind turbine rotor diameters to meet changing wind speeds and control system loads is disclosed. The rotor blades on the wind turbine are able to adjust length by extensions nested within or containing the base blade. The blades can have more than one extension in a variety of configurations. A cable winching system, a hydraulic system, a pneumatic system, inflatable or elastic extensions, and a spring-loaded jack knife deployment are some of the methods of adjustment. The extension is also protected from lightning by a grounding system.

The invention provides methods, systems, and computer program products for short term probability forecasting of selected weather-related events. These embodiments are adaptable for any geographical region that can be identified and for which a reasonable number of data points exist. The inventive method uses a data set of n observations of m parameters, where the parameters may be statistically correlated. A Principal Component Analysis may be performed, with the data set as input, to provide a reduced set of principal components that are uncorrelated and account for most of the variance in the input data set. An orthogonal transformation may be performed on the reduced set of principal components to provide a rotated set of principal components that are aligned with the corresponding parameters in the input data set. Finally a logistic regression may be performed on the rotated set of principal components to derive an S-shaped predictive equation for the probability of a binary weather-related event of interest. An illustrative embodiment of the invention is given for forecasting the probability for the number of lightning flashes exceeding a selected value, for the western United States climatological area.

A lightning detection system for detecting and locating an initial discharge of an initial leader stroke of a lightning flash. An initial lightning discharge produces a pulse that can be used to accurately detect lightning, and more particularly, the location of the initial lightning discharge. In one embodiment, at least three sensors detect and determine the location of the first pulses from initial lightning discharges using time difference of arrival information of the pulses at each of the three sensors. In another embodiment, a single sensor is used to determine the range of an initial lightning discharge from the amplitude of a corresponding initial detected pulse, and to determine the direction from a crossed loop antenna An alternative embodiment of a single sensor system determines a distance of a lightning event from a peak amplitude value derived from a pulse amplitude distribution. In a further embodiment, a lightning detection system provides enhanced lightning location by incorporating weather data from a weather radar with detected lightning information.

A weather radar system or method can be utilized to determine a location of a weather hazard for an aircraft. The weather radar system can utilize processing electronics coupled to an antenna. The processing electronics can determine presence of the hazard in response to data related to returns received by the weather radar antenna and data from a lightning sensor. The system can include a display for showing the hazard and its location.

Systems and methods to manage multiple vulnerability scanners distributed across one or more networks using a distributed security management system, herein called a Lightning Console. By distributing multiple scanners across a network, the work load of each scanner may be reduced to significantly reduce the impact on the network routing and switching infrastructure. In addition, scanners may be placed directly behind firewalls for more thorough scanning. Further, scanners may be placed closer to their scanned networks. By placing vulnerability scanners closer, the actual scanning traffic does not cross the core network switch and routing fabric, thereby avoiding potential network outages due to scanning activity. In addition, the closer distance of the scanners to the scanned targets speeds scan times by reducing the distance that the packets must traverse.

A flare-bang projectile is comprised of a weighty ballast in the front leading edge, a flash-bang charge, a transfer charge and a flare charge that is lit by a starter composition located at the rear of the flare charge. When the flare charge is ignited such that it burns during the flight of the projectile, an the projectile path is indicated to thereby provide warning signaling.

The invention discloses an all-weather clean energy comprehensive electricity generating and energy saving method and a facility manufacturing method. In ten inventions, having at least one identical or corresponding specific technical characteristic and related to the total inventive concept, of solar gallery buildings, through graphene series facilities under solar gallery buildings, in a land field, a zero-carbon environment-friendly safe type raft-shaped basic-framed-tube-structured huge building group of a universal wind energy tower shape is established and new energy automobiles and trains are manufactured, wherein cheap wind power solids are established, photoelectric benzene expansion optical fibers are manufactured, lightning is utilized firstly for supplying power externally, various spaces are shared through building three-dimensional afforesting, and three-dimensional energy collection is achieved; in a water field, deep water self-floating buildings of a super steel concrete frame-tube structure (preferably, complete steel plates are adopted) are built, the deep water self-floating buildings are connected in series to form a global ocean water and electricity and agriculture and forestry extraction traffic network and a large lake and reservoir water and electricity and agriculture and forestry dredging dam water level traffic network, wherein the deep water automatic floating buildings are free of influences of earthquakes, tsunamis and wars, the Red Cross can rescue people in all-weather conditions; in a space field, multiple receiving and transmitting solar towers are first established on the equator of the earth and the equator of the moon, the receiving and transmitting solar towers are connected in series to operate in a timed mode in the specific direction and transmit power to the whole world through graphene cables which are all packaged with colored insulating films.

The invention discloses a data transmission method and a base station based on beam forming in a multi-antenna system, which relate to the field of mobile communication. The method comprises the steps of: dividing available frequency resources of the system into a plurality of sub-bands; adopting different beam forming proposals to the sub-bands of various cells respectively, and acquiring layered beam groups aiming at the sub-bands; determining a main service cell of a user, and judging whether the user is a cell edge user or is a cell center user of the main service cell; and selecting a plurality of beams for data transmission of the user when the user is the cell edge user. The data transmission method and the base station, by serving cell edge users through combining the beams, avoidthe lightning effect caused by the beam forming in the prior art, ensure that users positioned at different positions of a cell can all be covered, and improve the performance of the cell edge users.

A flare-bang projectile is comprised of a weighty ballast in the front leading edge, a flash-bang charge, a transfer charge and a flare charge that is lit by a starter composition located at the rear of the flare charge. When the flare charge is ignited such that it burns during the flight of the projectile, an the projectile path is indicated to thereby provide warning signaling.

The invention discloses a lighting flashover risk evaluation model of a regional transmission line, comprising a database, a shielding failure risk evaluation model, a counterattack risk evaluation model and a risk value integrating module, wherein the database is used for providing various parameters and values of the various parameters; the shielding failure risk evaluation model is mainly usedfor solving a shielding failure trip-out rate by means of an improved electrogeometric model; the counterattack risk evaluation model is used for calculating a counterattack trip-out rate by means ofa standard method; and the risk value integrating module is used for adding the shielding failure trip-out rate to the counterattack trip-out rate to obtain the total lightning trip-out rate. The model provided by the invention integrates the advantages of an electrogeometric geometrical model and a standard method, uses the data of a lightning location system, considers the impacts of the form of a pole tower to the counterattack lightning resisting level, and improves the accuracy of lighting flashover risk evaluation of the regional transmission line. The invention also discloses a lighting flashover risk evaluation method of a regional transmission line corresponding to the model, wherein the model is combined with the method, and therefore, the lighting flashover risk evaluation can be carried out.

The invention relates to a wind turbine rotor blade which in its tip (1) is provided with a lightning receptor (2) and a drain passage (6; 16; 26; 36; 46; 56) connecting the blade interior (11, 12) with the blade exterior, the drain passage (6; 16; 26; 36; 46; 56) and the lightning receptor (2) having a common interface. The invention further relates to a lightning receptor provided with a drain passage (6; 36; 46; 56).

A weather radar system for improving output of potential lightning and hail weather conditions. An exemplary system includes a processor that receives and stores the weather radar reflectivity values into a three-dimensional buffer, receives an outside air temperature value, and determines freezing level based on the received outside air temperature value. The processor generates lightning icon(s) when a reflectivity value stored at cell(s) of the three-dimensional buffer above determined freezing level is greater than a first threshold amount. Also, the processor adds 1.6 km to the determined freezing level and generates hail icon(s) when a reflectivity value stored at cell(s) at the determined freezing level plus 1.6 km are greater than a second threshold amount. The display device displays the hail and lightning icons when an altitude value that corresponds to the cells associated with the generated lightning icons has been selected for display.

An electrical power producing wind turbine eliminates the possibility of being struck by lightning, reduces the complexity of gear trains and simplifies maintenance at heights. The wind turbine is electrically isolated from ground to reduce the possibility of being struck by lightning and the generator is located at ground level to simplify maintenance. The turbine blade shaft is directly attached to a hydraulic pump. The hydraulic fluid is transmitted to ground level through dielectric tubing and acts both as an electrical isolating medium and a transmitter of mechanical energy to the generator located at ground level. The wind turbine blade, shaft and hydraulic pump are electrically isolated from the support structure at the upper end.

A weather radar system for improving output of potential lightning and hail weather conditions. An exemplary system includes a processor that receives and stores the weather radar reflectivity values into a three-dimensional buffer, receives an outside air temperature value, and determines freezing level based on the received outside air temperature value. The processor generates lightning icon(s) when a reflectivity value stored at cell(s) of the three-dimensional buffer above determined freezing level is greater than a first threshold amount. Also, the processor adds 1.6 km to the determined freezing level and generates hail icon(s) when a reflectivity value stored at cell(s) at the determined freezing level plus 1.6 km are greater than a second threshold amount. The display device displays the hail and lightning icons when an altitude value that corresponds to the cells associated with the generated lightning icons has been selected for display.

An uninterruptable power supply (UPS) system / method providing power line conditioning and power factor correction (PFC) that incorporates centralized battery backup energy storage architecture is disclosed. The system generally comprises an AC-DC power supply with active PFC (power factor correction) function, a battery transfer switch, an isolated battery charger placed between the utility power source and battery strings, battery strings connecting the battery charger and the battery transfer switch, EMI / Lightning circuitry that provides lighting / line surge protection as well noise suppression functions, and a controller monitoring the quality of the utility power source. Uninterruptable power for data centers is achieved in this context via use of the battery strings, battery transfer switch, battery charger, and controller system configuration. Disclosed methods associated with this system generally permit the UPS to operate in a distributed fashion in support of computing systems within data centers.

The invention relates to a digital lightning detection method and a device thereof. The method comprises the following steps: receiving an electromagnetic signal generated when cloud-to-ground flash lightning discharging to generate an electric detection signal; digitalizing the conditioned electric detection signal; filtering the digital signal; establishing a uniform time scale; establishing a lightning signal identification criterion and a digitized cloud-to-ground flash lightning signal identification model by a time determination method, a bipolar test method and a homopolar test method by considering transmission features of a lightning electromagnetic radiation waveform; establishing a time window preprocessing area, and acquiring a development trend of the input digital signal and the corresponding typical parameters; and computing and determining the parameters of the input digital signal in combination with data in the time window by the digitized cloud-to-ground flash lightning signal identification model . The device consists of an antenna, a signal conditioner, an analog to digital converter, a module of cloud-to-ground flash lightning signal identification model, a system control manager, an assistant control manager, a communication interface, an external memory and a clock.

A method and apparatus for lighting protection. In one advantageous embodiment a method forms a lighting protection system on a composite surface of an aircraft. A dielectric coating is formed on the composite surface in which the dielectric coating covers a metal feature exposed on the composite surface. A metal adhesion promoter is applied in a pattern on the dielectric coating and over additional areas of the composite surface, including a grounding feature to form a metal adhesion promoter layer. A metal coating is formed on the metal adhesion promoter layer to create a path from an area including the metal feature to the grounding feature.

A multipurpose charging and display stand is configured to: retain a computerized wristwatch, such as an Apple™ and a Lightning™ smartwatch, in multiple vantage points to enable facilitated access to components on the computerized wristwatch, allow for charging of the computerized wristwatch through induction or direct cables, and allow for adjustable mounting of the computerized wristwatch to facilitate viewing of a display screen. The stand also enables compatible communication devices and accessories to communicate with the computerized wristwatch. A base forms a foundation for the stand and includes a cavity for storage of a power cable and other items. The base supports a post that extends at an angle. A leather arm rotatably joins with the post at a perpendicular orientation. The arm includes an inductive charging member that mates with the computerized wristwatch for charging. Alternatively, a power cable extends form the arm to charge the computerized wristwatch.

A wind turbine rotor including a rotor hub (3) and a plurality of blades (4), and where each blade root (16) is connected to said rotor hub through a pitch bearing (5) in such a manner that the pitch angle of the blade is adjustable by a turning of the blade about its longitudinal axis relative to the rotor hub. The blade is provided with at least one electrically conducting lightening down-conductor (6) extending in the longitudinal direction of the blade to the blade root and being electrically isolated from the pitch bearing (5). A spark gap (15) is provided between the lightning down-conductor and the rotor hub, said spark gap (15) being adapted to conduct a lightning current passing through the lightning down-conductor. A sliding contact connection (7, 12) is provided parallel to the spark gap (15) between the lightning down-conductor (6) and the rotor hub (3), said sliding contact connection ensuring electrical contact between said lightening down-conductor (6) and said rotor hub (3) irrespective of the pitch angle of the blade. The invention also relates to a wind turbine including such a rotor.

The invention discloses a method for measuring a lightning shielding failure trip-out rate of a high-voltage power transmission line by combining topography. The method comprises the following steps of: acquiring related parameters of the power transmission line, dividing the power transmission line into a plurality of intervals according to a pole tower, dividing each interval into a plurality of small sections by adopting an equal division method, calculating longitude and latitude coordinates of each section and an auxiliary point vertical to each section through longitude and latitude coordinates of the pole tower, further acquiring altitudes of each section and the auxiliary point by adopting geographic information system software, finally calculating a ground inclination angle of each section according to the height difference and distance between the auxiliary point and the subsection point, and calculating the shielding failure trip-out rate of each section by using an electric geometrical model considering the striking distance coefficient and the ground inclination angle. The method can conveniently calculate the ground inclination angle at the pole tower of the power transmission line, reflect the actual topographical characteristics of a corridor of the power transmission line, and provide reliable basis for evaluating the lightning protection effect of a lightning wire of the power transmission line.

The invention discloses an intelligent early-warning method for meteorological severe convection weather based on machine learning. The method comprises the steps of receiving severe convection weather early-warning basic data through a server, wherein the basic data comprise lightning positioning data, weather electric field data, automatic station meteorological essential factor real-time data, radar real-time radix data and the like, and supplying a local severe convection weather early-warning threshold for each area according to historical meteorological data based on a regression analysis method; obtaining real-time meteorological comprehensive data through big data regression analysis calculation of various meteorological essential factors, comparing the real-time meteorological comprehensive data with an early-warning threshold, and generating early-warning information. According to the intelligent early-warning method, tracing and data back-pushing are performed on meteorological historical data by means of the regression analysis method of machine learning; dynamic calculation and intelligent adjustment are performed according to a context threshold; data comparison is performed on a radar back-pushing result and automatic station meteorological essential factor real-time data; identification and early-warning are performed on the severe convection weather based on machine learning; and accurate early-warning for the severe convection weather in a preset area is realized.

To provide a light and economical separable blade for a wind turbine that is also equipped with a lightning rod function. A separable blade for a wind turbine wherein the blade as a whole is assembled by connecting two electrically non-conductive part blades 1T and 1R in the lateral direction, comprising metal fasteners 4, 5, 6, and 7 for fastening together the two adjacent part blades, and lightning discharge conductive wires 8 and 9, provided in an inner blade portion. The fastener 4 is exposed on the blade surface of the part blade 1T, and is connected to the lightning discharge conductive wire 9 through the other fasteners 5, 6, and 7, or a lightning discharge conductive wire 8. The lightning discharge conductive wire 9 extends to the blade root.

The invention provides a ZPW-2000A track circuit system, which comprises a receiver, a communication interface device, a sender, a track circuit maintenance machine, a cable lightning protection analogue network, an attenuation redundancy controller, a cable and outdoor trackside equipment, wherein the sender is used for generating and outputting corresponding signals to a train and the receiver according to received carrier-frequency and low-frequency coding information; the receiver is used for demodulating the received signals according to the received carrier-frequency and low-frequency coding information, obtaining track state information and outputting to the track circuit maintenance machine and a train control system; the track circuit maintenance machine is used for analyzing and judging the received self working state of the sender, the self working state of the receiver, signal amplitude and current output by the sender, the signal amplitude of a receiving terminal and the track state information, and correspondingly processing according to judgement results; and the communication interface device is used for completing communication protocol conversion of the sender, the receiver, the track circuit maintenance machine and the train control system.

The invention provides a traffic light identification method and device. The method comprises that positioning information of a vehicle is obtained; position information of a traffic lamp set in a target crossing in map data created in advance is obtained according to the positioning information of the vehicle; coordination transformation is carried out on the position information of the traffic lamp set to determine an ROI (Region of Interest), included by an image captured by a target camera of the vehicle, of the traffic lamp set; and the ROI is analyzed to obtain a lightning state of the traffic lamp set, attribute information of a traffic lamp which is ON at present can be inquired in the map data according to the lightning state of the traffic lamp set, and the attribute informationis used to indicate the passing state of the target crossing. Thus, the traffic lamps can be identified rapidly and accurately.

The invention discloses a VHF (very high frequency) frequency-range intracloud lightning detecting and positioning system, which comprises a central treatment station and a plurality of detection and treatment sub-stations arranged in different positions, wherein the detection and treatment sub-stations and the central treatment station are accessed into a public wide area network in a wired or wireless mode; and through the wide area network, on one hand, obtained intracloud lightning detection data is uploaded to the central treatment station by the detection and treatment sub-stations, andon the other hand, the working state of each detection and treatment sub-station is remotely monitored by the central treatment station. The system can be used for precisely estimating the incidence directions of lightning radiation signals of a plurality of simultaneously occurring lightning radiation sources or the same lightning radiation source arriving at the detection sub-stations through different propagation paths, the arriving time difference of the lightning signals between any two detection and treatment sub-stations is calculated at the central treatment station (TDOA estimation),and the spatial position of an intracloud lightning radiation source is determined by DOA and TDOA information.