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172 results about "Lightning detection" patented technology
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A lightning detector is a device that detects lightning produced by thunderstorms. There are three primary types of detectors: ground-based systems using multiple antennas, mobile systems using a direction and a sense antenna in the same location (often aboard an aircraft), and space-based systems.
Lightning locating system
InactiveUS6246367B1Accurately determineRadio wave direction/deviation determination systemsElectrical testingWeather radarAtmospheric sciences
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.
Owner:STRATEGIC DESIGN FEDERATION W LLC
Detection of lightning
InactiveUS20050197070A1Small sizeLow costWeather condition predictionIndication of weather conditions using multiple variablesTelecommunications linkLightning strokes
The invention relates to a mobile radio-frequency enabled device. In order to enable a lightning detection by means of such a device, it comprises an electromagnetic interferences detection component detecting electromagnetic interferences in at least one radio-frequency channel, which at least one radio-frequency channel is usable by the mobile radio-frequency enabled device for a communication link. The device further comprises a processing component adapted to determine whether a lightning stroke can be assumed to have occurred in the vicinity of the mobile radio-frequency enabled device due to an electromagnetic interference detected by said electromagnetic interferences detection component. The invention relates equally to a corresponding system, to a corresponding method and to a corresponding software program product.
Owner:WSOU INVESTMENTS LLC
Digital lightning detection method and device thereof
ActiveCN101539599AEasy to identifyImprove type discriminationElectromagentic field characteristicsSpecial data processing applicationsElectromagnetic radiationAnalog-to-digital converter
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.
Owner:STATE GRID ELECTRIC POWER RES INST
Systems and methods for time corrected lightning detection
InactiveUS6868339B2Faster throughputEasy accessSpecial data processing applicationsAtmospheric potential difference measurementLightning strokesLongitude
A lightning detection system provides an estimated location of a lightning stroke. The system includes sensors, and an analyzer. Each sensor provides messages having sensor identification, an amplitude responsive to the lightning stroke, and a time of detecting the lightning stroke. The analyzer applies time corrections and amplitude corrections to improve the accuracy of determining the location of the lightning stroke. Time adjustments and amplitude adjustments for the time and amplitude corrections are recalled from a matrix accessed according to a suggested or estimated location. The matrix may be organized by coordinates of longitude and latitude.
Owner:VAISALA
A vhf frequency band cloud lightning detection and positioning system
ActiveCN102288838ARealize spatial positioningGet rid of dependenceElectromagentic field characteristicsEngineeringMultilateration
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.
Owner:HUAZHONG UNIV OF SCI & TECH
Lightning detection and positioning system and method
ActiveCN102338830AAdd monitoring functionAdd count functionElectromagentic field characteristicsLightning strikeElectromagnetic field
The invention discloses a lightning detection and positioning system and method, which relate to the technical field of meteorological detection. The system comprises an antenna unit, a receiver unit, a waveform characteristic extracting and processing unit and a monitoring and controlling unit, wherein the antenna unit is used for detecting an electromagnetic field variation signal while lightning happens, detecting a GPS satellite signal and transmitting the electromagnetic field variation signal and the GPS satellite signal to the receiver unit; the receiver unit is used for receiving the electromagnetic field variation signal and the GPS satellite signal; the waveform characteristic extracting and processing unit is used for extracting electromagnetic field variation signal waveform characteristic parameters in real time and analyzing the parameters to obtain a cloud ground flash identification result and a ground flash positioning result; and the monitoring and controlling unit is used for collecting and storing the waveform of the electromagnetic field variation signal in real time, marking the time of collecting the lightning waveform and displaying the position of the ground flash in a geographical information system in real time. The system and method disclosed by the invention, multifunctional single-station lightning detection and positioning of the lightning waveform collection and lightning strike-back positioning can be carried out.
Owner:CHINESE ACAD OF METEOROLOGICAL SCI
Lightning detection
ActiveUS20050197776A1Small sizeLow costWeather condition predictionIndication of weather conditions using multiple variablesTelecommunications linkLightning strokes
A mobile radio-frequency enabled device that provides a reliable and inexpensive lightning alerting of a user. The device comprises an electromagnetic interferences detection component detecting electromagnetic interferences in radio-frequency signals received by the mobile radio-frequency enabled device for a communication link. The device further comprises a processing component to determine whether a lightning stroke can be assumed to have occurred in the vicinity of the device due to an electromagnetic interference detected by the electromagnetic interferences detection component, and to cause a notification of a user about an assumed lightning stroke via a user interface. The invention relates equally to a system which comprises such a device and a network element of a communication network, to a corresponding method and to a corresponding software program product.
Owner:NOKIA TECHNOLOGLES OY
System and method for detecting lightning
A system for lightning detection is provided. The lightning detection system includes a conductor configured to receive a lightning strike and transmit a lightning induced current. The system also includes a fiber optic current sensor configured to detect multiple lightning parameters from the lightning induced current and to modulate a beam of radiation in response thereto. The system further includes an electro-optic module configured to receive and convert said beam of radiation from the fiber optic current sensor to an electrical signal.
Owner:GENERAL ELECTRIC CO
Method and device for realizing thunder and lightning early warning based on thunder and lightning data mining and storage medium
ActiveCN109738970AImprove accuracyReduce early warning space errorWeather condition predictionCharacter and pattern recognitionRadarLinear regression
The invention discloses a method and device for realizing thunder and lightning early warning based on thunder and lightning data mining and a storage medium. The method comprises the following steps:S10) analyzing atmospheric electric field intensity and radar echo, and when meeting preset conditions, starting a thunder and lightning warning process; S20) collecting satellite cloud picture dataand thunder and lightning location data, combining the satellite cloud picture data and the thunder and lightning location data and carrying out judgment and correction, and carrying out clustering analysis on the thunder and lightning data to obtain moving speed and direction of thunderstorm clouds; S30) according to the obtained thunderstorm cloud distribution, calculating moving speed and direction of the thunderstorm clouds through a linear regression method, and predicting the location and quantity of thunder and lightning at the next moment; and S40) dividing the area into different grids, and carrying out corresponding levels of thunder and lightning warning according to the predicated location and quantity of thunder and lightning. The thunder and lightning early warning method hasthe advantages of short warning time and high accuracy, reduces overall false alarm rate of a thunder and lightning detection network, improves thunder and lightning warning accuracy and reduces thunder and lightning early warning space accuracy.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +2
Detection of lightning
ActiveUS20070088504A1Low costReduce spacingWeather condition predictionSpecial data processing applicationsDigital signal processingAudio power amplifier
A lightning detector for lightning detection and a lightning detection method, wherein the mobile lightning detector is provided with an antenna, an amplifier front-end, an A / D converter and a digital signal processor, and wherein the lightning detector is a mobile RF device provided with an audio codec whereby the preamplifier of the codec is used for amplification of the detected lightning signal, the A / D converter of the codec is used for the A / D conversion of the amplified lightning signal, and whereby the digital audio processing unit of the codec is used for the signal processing of the lightning detection.
Owner:WSOU INVESTMENTS LLC
Lightning detection
ActiveUS7016785B2Low costSmall sizeWeather condition predictionIndication of weather conditions using multiple variablesTelecommunications linkLightning strokes
Owner:NOKIA TECH OY
Fiber optic current sensor system and method for detecting lightning
A system for lightning detection is provided. The lightning detection system includes a conductor configured to receive a lightning strike and transmit a lightning induced current. The system also includes a fiber optic current sensor configured to detect multiple lightning parameters from the lightning induced current and to modulate a beam of radiation in response thereto. The system further includes an electro-optic module configured to receive and convert the beam of radiation from the fiber optic current sensor to an electrical signal.
Owner:GENERAL ELECTRIC CO
System and method for detecting lightning
ActiveUS20100328084A1Electrical testingDigital variable/waveform displayLightning strikeState parameter
A lightning detection system is presented. The lightning detection system includes a plurality of sensing devices configured to generate sensor signals representative of one or more working state parameters of an object. The lightning detection system further includes a lightning signal processing subsystem configured to combine the sensor signals representative of the one or more working state parameters received from the plurality of sensing devices to generate a composite signal, extract noise signals from the composite signal, and compare the extracted noise signals with one or more lightning signal profiles to determine existence of lightning noise signals in the extracted noise signals, wherein the lightning noise signals are induced in the sensor signals in response to a lightning strike on the object.
Owner:GENERAL ELECTRIC CO
Single-station quasi-three-dimensional lightning positioning device and method
InactiveCN102540145ASimple structureEasy to set upPosition fixationElectromagentic field characteristicsSensor arrayAtmospheric sciences
The invention relates to single-station quasi-three-dimensional lightning positioning device and method. By combining an acoustic signal and an electric signal generated by lightning, the reasonable configuration way of an antenna and a sensor array is designed; by utilizing one acoustoelectric combinative quasi-three-dimensional lightning positioning method, the quasi-three-dimensional positioning result and the space-time evolution process of a lightning discharge channel can be measured and obtained only through a single observation station; the positioning device and the method have the full lightning detection functions of ground lightning and cloud lightning; and simultaneously, the synchronous acoustoelectric comprehensive detection data of the lightning are provided. The positioning device and the method are applicable to weather with higher requirements on the detection precision and the positioning result of the lightning, the detection and the early warning of the lightningfor aviation, spaceflight and military departments, and also can be used as observing and measuring approaches for the physics and the protection research of the lightning.
Owner:PLA UNIV OF SCI & TECH
Integrated device for lightning and ground electric field monitoring
InactiveCN102937671AAccurate calculationHigh measurement accuracyElectromagentic field characteristicsElectrostatic field measurementsSignal processing circuitsElectric field
The invention discloses an integrated device for lightning and ground electric field monitoring, and the integrated device comprises a ground electric field monitoring unit, a lightning detection unit and a signal and data processing unit, wherein the ground electric field monitoring unit comprises an MCU (Microprogrammed Control Unit) module, an electric field instrument, an amplifier, a filter and a self-checking / self-correcting module; the lightning detection unit comprises an antenna assembly, three pre-amplification electric circuits, three signal processing circuits, a waveform identification circuit, a photoelectric tube and an optical detection module; and the signal and data processing unit is used for processing received signals and transmitting the signals to a computer through a communication interface for displaying. The device integrates lightning predicting and locating functions into a whole, and can be used for overcoming the defects that single equipment is unlikely to carry and the detection precision is low, and improving the lightning monitoring precision and accuracy.
Owner:中国人民解放军理工大学气象学院
Three dimensional full-lightning detection positioning system based on very-low frequency/low frequency
InactiveCN105974207AHigh precisionHigh resolutionElectromagentic field characteristicsData centerPositioning system
A three dimensional full-lightning detection positioning system based on very-low frequency / low frequency comprises a data processing center station (20) and a plurality of detection substations installed on different positions, wherein the detection substations access to a wide area network, and through which data are sent to the data processing center station (20). The data centre station (20), upon reception of detection data of each detection substation, obtains the three-dimensional position of a lightning radiation source through three-dimensional lightning positioning algorithm. The VLF / LF antenna acquisition module (4) of each substation acquires magnetic field, electric field and GPS time setting signals and transmits the magnetic field, the electric field and the GPS time setting signals to a channel processing module (5), the channel processing module (5) transmits the signals after processing to a lightning signal identifying module (6), and the lightning signal identifying module (6) determines whether the lighting is intracloud lightning or cloud-to-ground lightning according to the characteristics of the intracloud lightning and the cloud-to-ground lightning. A clock synchronization module (7) marks time labels on the lightning signals, and transits to a data emission module (8). The data emission module (8) sends the lightning data to the data processing center station (20).
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Lightning stroke detection and warning system
ActiveCN1670536AAvoid or minimize lossesEasy to detectCurrent/voltage measurementLightning strikeCurrent range
This invention relates to lightning strike monitor alarm system, which comprises strike signal collector, remote alarm controller and central receiving controller, wherein, the said collector can detect strike times of movable communication without human on spot, lightning current range of each lightning, time of strikes, power arrester working status. The remote alarm controller gets these information through connection circuit to get these information for process and send out warns to express the strikes to display on LCD and send the communication types through long line or telephone line or GMS to the central receiver machine of the local place. The central receiver sends warnings and displays on LCD to inform relative human for quickly process.
Owner:四川中光信息防护工程有限责任公司
Detection of lightning
InactiveUS20070085525A1High sensitivityElectrical testingSpecial data processing applicationsAtmospheric sciencesLightning detection
A lightning detector for lightning detection and a lightning detection method, wherein the lightning detector uses at least two separate channels or frequency bands for lightning detection, and wherein the lightning detector is a mobile RF device provided with radio interfaces for at least two communication channels or frequency bands, whereby at least one of which is normally a telecom channel / frequency range and wherein these channels / ranges are used in lightning detection.
Owner:WSOU INVESTMENTS LLC
Lightning positioning system based on VHF radar and lightning positioning method
PendingCN109143218ARealize three-dimensional positioningRealize single station positioningRadio wave reradiation/reflectionICT adaptationRadarLength wave
The invention relates to the technical field of lightning detection, in particular to a lightning positioning system based on a VHF radar and a lightning positioning method. The lightning positioningsystem comprises a VHF radar transmitting system and a radar receiving system arranged in the same station. The radar receiving system comprises an interference receiving antenna comprising at least two long baseline antenna arrays and at least two short baseline antenna arrays. Each of the long baseline antenna arrays and the short baseline antenna arrays comprises at least two pairs of receivingantennas. Terminals of the long baseline antenna arrays and the short baseline antenna arrays are provided with public receiving antennas. A distance between the adjacent two pairs of receiving antennas in each long baseline antenna array is greater than that of the adjacent two pairs of receiving antennas in each short baseline antenna array. The size of the receiving antennas is matched with the wavelength of VHF radar waves transmitted by means of a VHF radar transmission system. The positioning system can realize three-dimensional positioning of lightning and single-station positioning oflightning.
Owner:WUHAN UNIV
Detection of lightning
ActiveUS7254484B2Low costReduce spacingWeather condition predictionSpecial data processing applicationsDigital signal processingAudio power amplifier
Owner:WSOU INVESTMENTS LLC
Systems and methods for time corrected lightning detection
InactiveUS7460956B2Easy accessFaster throughputDirection finders using radio wavesElectrical testingLightning strokesEngineering
Owner:VAISALA
Ultra wideband receiver for lightning detection
InactiveUS20090164124A1Electromagentic field characteristicsSpecial data processing applicationsUltra-widebandLightning strike
The present invention relates to a system and method for detecting lightning activity. When a lightning strike is close enough to a receiver, the strength of the signal received will cause the receiver to saturate. In such a situation, a non-filtered signal is used to calculate a range and bearing. In one specific embodiment, a receiver detects energy emitted by a lightning strike and separates the lightning strike to a filtered signal and non-filtered signal. A saturation detector determines if the filtered signal is saturated prior to the filtered signal being filtered. In response to the filtered signal being saturated, a processor processes the non-filtered signal from the receiver, estimates locations of the detected lightning strike relative to the system, determines a cumulative effect of the lightning strike spaced in distance and time, and generates display signals to illustrate the cumulative effect with respect to a grid.
Owner:AVIDYNE CORPORATION
GIS (Geographic Information System) platform processing method for mass lightning data
InactiveCN102156739ARealize the fundamental goal of the serviceSpecial data processing applicationsTime domainDensity analysis
The invention discloses a GIS (Geographic Information System) platform processing method for mass lightning data, which comprises the following steps of: (1) establishing a lightning database to provide a basic data source for lightning analysis through inducing historical data and acquiring data in combination with a real-time lightning detection system, wherein lightning information is intuitively displayed by using a GIS platform for the convenience of predicting the development tendency of lightning; and (2) analyzing lightning data through an interactive method, and finally forming a weather product which can be issued, wherein the lightning data comprises the query and statistics of customized lightning information, lightning space density analysis and the like. As mass lightning data is processed on the GIS platform, the demand on lightning protection services is met. Real-time or delayed load, customized display as well as time domain and spatial analysis can be performed on a lot of lightning data, and therefore a technical support is provided for weather forecasters to observe and analyze lightning for the convenience of lightning prevention forecast in a better manner.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
FPGA single event upset protection method and system for FY-4A satellite lightning imager
PendingCN109976962AReduce the impactRealize the technical effect of flipping automatic recoveryMarginal checkingElectromagentic field characteristicsSingle event upsetLightning detection
The invention discloses an FPGA single event upset protection method and system for an FY-4A satellite lightning imager. The method comprises: the automatic detection of FPGA single-event flipping onthe FY-4A satellite lightning imager; the FPGA automatic refresh protection on the FY-4A satellite lightning imager; and the FPGA timing refresh protection on the FY-4A satellite lightning imager; automatic reset protection on the FY-4A satellite lightning imager. The method solves the technical problem of lacking single-event flip protection measures for the single-event effect study of the FY-4Asatellite lightning imager FPGA. According to the characteristics of lightning observation missions and the timeliness of lightning detection products recovery, the method adopts multiple measures ofsingle-event flip protection such as automatic discrimination and automatic command, dynamic refresh and timing refresh, software reset and hardware reset to realize FPGA single particle. Flip automatic recovery. Through the above work, the current FY-4A satellite lightning imager has effectively reduced the impact of single-event flipping effects on lightning detection products.
Owner:NAT SATELLITE METEOROLOGICAL CENT
Integrated lightning early warning system and method
InactiveCN105759127AFull Coverage GuaranteedFlexible structureElectromagentic field characteristicsEarly warning systemLightning detection
The invention discloses an integrated lightning early warning system and method. The system is composed of a lightning detection device, a database processing module and a lightning early warning module. The lightning detection device is used for detecting a lightning signal and sending the lighting signal to the database processing module; the data processing module is used for determining an early warning level of the received lightning signal and a lightning prevention measure corresponding to the early warning level based on combination of a pre-stored lightning level numerical table and a lightning prevention measure table, generating an early warning signal to the lightning early warning module when the early warning level is higher than a preset lightning early-warning threshold value, and generating a lightning prevention measure execution instruction; and the lightning early warning module is used for carrying out alarming based on an early warning signal. Therefore, the provided early warning system has high precision; the early warning time is sufficient; and full coverage of lightning monitoring of a protected area is guaranteed.
Owner:CHINA ACAD OF SAFETY SCI & TECH +1
Systems and methods for spectral corrected lightning detection
A lightning detection system provides an estimated location of a lightning stroke. The system includes sensors and an analyzer. Each sensor within range of a lightning event provides messages to the analyzer. Each sensor includes a waveform engine that converts a signal received from the lightning event to a series of frequency domain components having respective magnitude and phase. The waveform engine adjusts magnitudes and phases of the frequency components, for example, to mitigate the effects of terrain conductivity where the received signal traveled across terrain. The adjusted frequency components are then converted by the waveform engine into a second time domain signal that is described in a message to the analyzer. Each message includes sensor identification, peak amplitude, and time of detecting the lightning event. The analyzer provides an estimated location of the lightning stroke and an estimated peak current of the lightning stroke in accordance with messages received from sensors.
Owner:VAISALA +1
Lightning warning method applicable to distribution networks
ActiveCN107271795AImprove accuracyWeather condition predictionElectromagentic field characteristicsPower flowPower grid
The invention relates to a lightning warning method applicable to distribution networks, which includes any of the following sub methods or a combination of a plurality of sub methods. In a first sub method, lightning is detected using a multi-vector photo-magnetic complex-mode induction technology to get the type, direction and relative distance of lightning, and a warning is then issued according to the type, direction and relative distance. In a second sub method, a power grid is partitioned, and a warning is issued according to the connection relationship of the partitions. In a third sub method, the lightning warning level is adjusted according to the real-time operation state of a power grid. In a fourth sub method, whether it is intra-cloud lightning or cloud-to-ground lightning is detected and identified, and a warning is issued according to the result of detection and identification. In a fifth sub method, a warning is issued by integrating real-time lightning detection data and near-earth electric field detection data. Through one sub method or the combination of a plurality of sub methods, the power flow distribution condition, the real-time load condition and the lightning protection of equipment in a power grid are considered, and the accuracy of power grid lightning warning can be improved.
Owner:SUZHOU POWER SUPPLY OF JIANGSU ELECTRIC POWER
Three-dimensional lightning detection system and method based on Beidou
InactiveCN103278704AHigh precisionReduce utilization costRadio-controlled time-piecesElectromagentic field characteristicsThree-dimensional spaceService mode
Owner:CHONGQING INST OF GREEN & INTELLIGENT TECH CHINESE ACADEMY OF SCI
Dynamic lightning protection method and system
InactiveCN107453352AReduce accidentsRealize dynamic protectionProgramme controlContigency dealing ac circuit arrangementsPower flowPower grid
The invention discloses a dynamic lightning protection method, which comprises the steps of carrying out real-time lightning detection; tracking a thunderstorm position; and carrying out dynamic lightning protection control on a power grid according to a power grid control strategy, wherein the power grid control strategy comprises one or more of the following strategies of (1) optimizing the operation mode of the power grid, changing a power flow path of the power grid and preventing the power flow of the power grid from passing through an area threatened by lightning; (2) adjusting the power flow of the power grid, reducing the power flow on a power transmission path in the area threatened by lightning and increasing the power flow on the power transmission path in a security area; and (3) carrying out nonlinear control through a generator / generation unit, dynamically controlling a power supply to control power flow output of the power grid and increasing power output in the security area. Meanwhile, the invention also discloses a dynamic lightning protection system. Dynamic lightning protection is achieved by combining real-time lightning tracking with power grid stability calculation according to one or more control strategies.
Owner:JIANGSU ELECTRIC POWER CO
Apparatus for low cost lightning detection
InactiveUS7266455B2Low costQuick fixNuclear monitoringDigital computer detailsLightning strikeFloating point
Owner:OUTDOORS TECH
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