163results about "Atmospheric potential difference measurement" patented technology

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.

The subject invention provides an improved system and method for combining data obtained from the NEXRAD TM system of the National Weather Service ("NWS") with geographical and topological data base information to achieve an improved and informative graphical storm-tracking display able to project the movement of a storm with a single user-operation. The method of projecting storm movement includes the following steps: collecting NEXRAD data attributes from a weather data source; calculating storm position using the collected NEXRAD attributes; calculating projected storm movement using the storm position and the collected NEXRAD attributes; displaying a graphic representation of the projected storm movement.

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.

A system and method for detecting turbulence includes several mobile platforms, a mobile platform velocity sensor, and several electromagnetic energy transmitters and receivers. The receivers receive the energy transmitted by the transmitter(s) after it has traveled along a path subject to the turbulence. The receivers detect alterations of the energy caused by the turbulence and filter the alterations for effects of the mobile platform velocity (on which either a transmitter or receiver is located). Additionally, the system may create a three-dimensional model of the. In another preferred embodiment, the present invention provides a method of detecting turbulence using a mobile platform. The method includes receiving electromagnetic energy that has traveled along a path subject to the turbulence and determining the alteration to the energy caused by the turbulence. The alterations are filtered of the effects of the velocity of the mobile platform on which the receivers are preferably located.

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.

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.

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.

There is discloses a new method for identifying an electromagnetic signal having a known waveform. The method includes using a lightning matched filter receiver having a bank of filters matched to nominal but arbitrary lightning waveforms for detecting lightning. The use of a lightning matched filter receiver facilitates detection of lightning discharges below the noise level. Positioning three or more monitoring stations at different spaced apart geographic locations where each monitoring station has a lightning matched filter receiver where the filters are matched to nominal but arbitrary lightning waveforms can be used to detect and determine the location of a lightning discharge.

Described are methods and apparatuses, including computer program products, for detecting lightning activity. Waveform data indicative of lightning activity is received by a waveform sensor from one or more signal converters. The waveform data comprises a group of electromagnetic waveforms. The waveform data is filtered by a processor to remove noise frequencies. One or more uncompressed portions of the waveform data are transmitted to a processing server. Digital filter data based on the one or more uncompressed portions of waveform data are received from the processing server. One or more frequencies are removed from the waveform data based on the digital filter data. The waveform data is compressed. The compressing includes selecting one or more points on a waveform, wherein the one or more points are above a predetermined threshold. The compressing includes determining an inflection of the selected points based on a predefined algorithm.

In order to further develop a system (100) and a method for recording, transmitting and analyzing data and information (D and D*, resp.) accrued from, in particular low-frequency, electromagnetic radiation, where the electromagnetic radiation originates from at least one impulse source of natural and/or artificial origin, in particular from at least one atmospheric discharge (P) or from at least one transmitter (K), such that a precise characterization of the impulse source, for example a reliable differentiation between cloud-ground lightning (C[loud]G[round]) and cloud-cloud lightning (=I[ntra]C[loud] within a cloud, or C[loud-]C[loud] between clouds) is provided for, it is proposed to localize the altitude (H) of the impulse source, in particular the emission altitude or the broadcast altitude, and/or the directionality (C), in particular the spatial direction path, of the impulse emission or impulse broadcast caused by the impulse source,

by determining the difference between the arrival time of the signal (S) at the measuring station (20) located closest to the impulse source and the arrival time of the signal (S*) at at least one, preferably at least two, measuring stations (20*) which are not located closest to said impulse source.

A monitoring and response system including a monitoring device for detecting one or more conditions, a transmission system for sending control codes, and multiple devices for actively performing functions in response to the control codes. The monitoring device may consist of multiple detectors located in different geographic areas. The monitoring device may also be an external system. In the external monitoring device configuration, a centralized monitoring device detects and locates the conditions and transmits this information to the transmission system. The transmission system then transmits control commands to the devices.

Methods and apparatuses, including computer program products, are described for predicting the potential for severe weather. Data associated with lightning activity is received by a computing device. A location, a movement speed, a movement direction, and a lightning rate of one or more cells of lightning activity are determined by the computing device based on the received data. The lightning rate is compared, by the computing device, to a threshold lightning rate. One or more geographical areas at risk are determined by the computing device based on the location, the movement speed and the movement direction of the one or more cells of lightning activity. An alert is issued by the computing device to one or more remote devices monitoring the geographical areas when the lightning exceeds a value of the threshold lightning rate.

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.

The invention provides a multi-information integration-based thunder and lightning monitoring and forecasting method for electric transmission and transformation equipment, which is characterized by comprising the steps of 1, establishing a thunderstorm potential forecasting model and establishing a Hubei province thunderstorm potential forecasting equation; 2, establishing a thunderstorm nowcasting model, and selecting a radar composite reflectivity factor (CR), an echo top height (ET) and a vertical integrated liquid water (VIL) as nowcasting factors to lock the thunderstorm based on the stepwise decreasing FAR method; at the same time, in combination with the monitoring information of a lightning position finder, forecasting the possible area wherein the thunderstorm appears within 30 minutes in the future; 3, establishing a thunder and lightning monitoring and forecasting system for a power transmission line. According to the technical scheme of the invention, the precipitation area and the probability of the thunderstorm in different areas can be accurately forecasted. The method is high in accuracy, strong in practicability and good in reliability.

An advance warning lightning electromagnetic pulse (LEMP) storm detection device, system, and method for automatically protecting, disconnecting, and isolating electronic equipment in anticipation of a potential storm, thereby preventing damage to electronics susceptible to power surges caused by lightning strikes or earth ground fault events. The storm detection device can include a coaxial isolation switch, a radio receiver, a controller having a processor, wherein the controller further includes an isolation detection unit. In addition, the storm detection device can further include a drive motor, one or more input electrical contacts, and one or more output electrical contacts engaged with the input electrical contacts. Further, wherein in response to the radio receiver detecting one or more lightning strikes, the controller operates the drive motor to disengage the input electrical contacts and output electrical contacts from each other.

A weather station for providing weather information to a user, especially weather information related to lightning and severe thunderstorm activity. In accordance with the present invention, the weather station includes one or more antennas for receiving GPS transmissions, weather radio transmissions, and a separate radio band, such as the AM radio band for use in detecting lightning strikes. The GPS signal is used to determine the position of the user. A lightning detector coupled to the antenna for receiving the AM (or other band) signal calculates the proximity of any detected lightning strikes. The national weather radio band antenna receives information from NOAA and similar organizations and presents it to the user in the normal fashion. In accordance with the present invention, the weather station may take storm data from NOAA and compare it to lightning proximity data that it has already obtained at a particular location and present to the user an indication of the relative location of the severe thunderstorm activity and its direction of movement.

The invention discloses a lightning intensity value predicting method based on atmospheric electric field data, which is applied to the field of lightning early warning. The disclosed lightning intensity value predicting method is used for converting original one-dimensional atmospheric electric field data into a two-dimensional image representation through extracting depth features of the atmospheric electric field data, mining depth feature information of the image, establishing a relationship model of the atmospheric electric field data and a lightning intensity value by combining with a non-linear regression analysis method, and predicting the lightning intensity value. According to the lightning intensity value predicting method, various kinds of detection data is used for performinglightning early warning, i.e., the atmospheric electric field data and lightning data; the one-dimensional atmospheric electric field data is converted into the two-dimensional image representation byadopting a dimension conversion method, so as to enhance the structure representation of the atmospheric electric field data; the depth feature information of the atmospheric electric field data is extracted by using a depth model; and the lightning intensity value is predicted by using the atmospheric electric field data, thereby filling a gap of low utilization of the atmospheric electric fielddata in other predicting methods and a gap of lightning intensity value prediction.