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WO2018036280A1 - Procédé d'utilisation d'un terminal mobile pour détecter et localiser en coopération la foudre - Google Patents

Procédé d'utilisation d'un terminal mobile pour détecter et localiser en coopération la foudre Download PDF

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Publication number
WO2018036280A1
WO2018036280A1 PCT/CN2017/091667 CN2017091667W WO2018036280A1 WO 2018036280 A1 WO2018036280 A1 WO 2018036280A1 CN 2017091667 W CN2017091667 W CN 2017091667W WO 2018036280 A1 WO2018036280 A1 WO 2018036280A1
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WO
WIPO (PCT)
Prior art keywords
lightning
time
data
mobile terminal
discharge
Prior art date
Application number
PCT/CN2017/091667
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English (en)
Chinese (zh)
Inventor
伍楷舜
刘巍峰
邹永攀
王璐
Original Assignee
深圳大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳大学 filed Critical 深圳大学
Publication of WO2018036280A1 publication Critical patent/WO2018036280A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/16—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using electromagnetic waves other than radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic, or infrasonic waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01W—METEOROLOGY
    • G01W1/00—Meteorology
    • G01W1/02—Instruments for indicating weather conditions by measuring two or more variables, e.g. humidity, pressure, temperature, cloud cover or wind speed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/724—User interfaces specially adapted for cordless or mobile telephones
    • H04M1/72448—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions
    • H04M1/72457—User interfaces specially adapted for cordless or mobile telephones with means for adapting the functionality of the device according to specific conditions according to geographic location
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/025—Services making use of location information using location based information parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/02—Services making use of location information
    • H04W4/029—Location-based management or tracking services
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids

Definitions

  • the present invention relates to the field of lightning positioning, and more particularly to a method for detecting and co-locating lightning using a mobile terminal.
  • Lightning is a strong discharge between clouds and clouds, between clouds and ground, or between various parts of the cloud (generally in cumulonimbus).
  • the storm cloud (cumulonimbus) generates electric charge
  • the bottom layer is negative electricity
  • the top layer is positive electricity
  • Positive and negative charges attract each other, but air is not a good conductor.
  • Positive charges rush to the tops of trees, hills, tall buildings, and even the human body, in an attempt to meet the negatively charged clouds; the negatively charged branches extend downward and extend closer to the ground.
  • the positive and negative charges are finally connected to overcome the obstacle of the air.
  • the huge current flows from the ground to the clouds along a conducting airway, creating a bright flash of light.
  • the process of lightning seen by the naked eye is very complicated.
  • the middle and lower part of the cloud is a strong negative charge center, and the opposite underlying surface of the cloud becomes a positive charge center, forming a strong electric field between the cloud bottom and the ground.
  • the cloud bottom first appears as a gas column in which the atmosphere is strongly ionized, which is called a step pilot.
  • the ionized gas column extends step by step to the ground.
  • Each stage of the cascade is a dim light column with a diameter of about 5 meters, a length of 50 meters and a current of about 100 amps. It is extended at a high speed of about 150,000 meters per second.
  • a lightning process is usually formed by 3-4 flashes. A lightning process lasted about 0.25 seconds. In this short period of time, a huge narrow electric lightning channel would release huge electric energy, thus forming a strong explosion, generating a shock wave, and then forming sound waves to spread around.
  • lightning electromagnetic pulse is the electromagnetic radiation associated with lightning discharge.
  • Lightning electromagnetic radiation is very similar to nuclear explosion electromagnetic radiation.
  • the electromagnetic waves radiated from VLF (very low frequency) to UHF (very high frequency), very wide electromagnetic pulses, the generated electric and magnetic fields can be coupled into electrical or electronic systems. , thereby generating an intrusive surge current or surge voltage.
  • Electromagnetic pulses have a strong interference with precision electronic components and even burn out electronic components.
  • Lightning detection network such as: U.S. National Lighting Detecting Network, China National Lightning Monitoring and Positioning Network.
  • NLDN detects lightning by means of a number of sensor nodes located in different regions. It provides services to the US power system, weather forecasting systems and other government departments, as well as some commercial sectors, including real-time data and historical data. . However, NLDN needs to deploy dedicated sensor nodes, and the general public needs to pay for it.
  • One of the more popular ones is the use of battery-based pager-sized personal lightning detection equipment, which is used outdoors.
  • This device determines the distance of lightning from the user by detecting the intensity of the EMP (electromagnetic pulse), but it has the disadvantage that it is easy to misjudge the distance, and of course it cannot locate the location where the lightning occurs.
  • EMP electromagnettic pulse
  • the present invention provides a method for detecting and co-locating lightning using a mobile terminal, which solves the above problem of easily misjudged distance in the prior art.
  • the present invention is achieved by the following technical solution: a method for detecting and co-locating lightning using a mobile terminal, comprising the following steps:
  • S2 processing data collected by the magnetometer, and dividing the data into a plurality of frame data having a set time length in time sequence;
  • the processing unit of the smart device calculates a distance between the lightning discharge position and the mobile terminal by using a lightning formation time and a thunder receiving time, and simultaneously numbers the lightning terminal, the distance from the discharge position, the lightning formation time, and The mobile terminal location information is uploaded to the server through the wireless network;
  • the server uses the above information uploaded by the multiple mobile terminals to locate the location of the lightning discharge at a certain moment according to the geometric principle, and generates a lightning discharge heat map to return to the plurality of mobile terminals.
  • step S2 comprises:
  • each segment of the magnetic induction signal is a data frame. For each data frame Give its start time as its time stamp;
  • S22 Perform noise reduction processing on each of the data frames, and filter the signal using a filter to remove noise.
  • the step S3 includes:
  • S31B performing Fourier transform on the data signal in the data frame by using a short-time Fourier transform function, and analyzing the frequency domain of the signal to obtain a frequency domain characteristic thereof, where the frequency domain features include: Spectral centroid, spectral entropy, bandwidth, spectral flux, and spectral roll-off;
  • step S32 by comparing the obtained feature parameter set with the previously stored plurality of feature parameter sets one by one, a plurality of the same types in the two feature parameter sets being compared When the difference between the characteristic parameters is less than the set threshold, it is determined that the lightning discharge exists, and the time stamp corresponding to the currently obtained feature parameter set is taken as the discharge time.
  • the server determines, according to the information uploaded by the different mobile terminals, the data uploaded by the mobile terminal detecting the lightning in the discharge location area of the lightning discharge according to the discharge time, and combines the data in the area
  • the distance information uploaded by the mobile terminal locates the location of the lightning discharge by geometric principle, generates a lightning discharge heat map according to different lightning information located at different moments, and transmits it to the client of the smart device.
  • the client of the smart device receives the information returned by the server through the network, and gives the user a security prompt according to the information, and provides the client to view the lightning information in the vicinity.
  • the invention has the beneficial effects that the lightning distance can be accurately obtained by the method of the invention, and the utility model has the advantages of high cost performance and wide application.
  • FIG. 1 is a schematic diagram of a scenario application of the present invention
  • Figure 2 is a schematic view of the steps of the present invention.
  • a method for detecting and co-locating lightning using a mobile terminal the steps of which include:
  • the processing unit of the smart device calculates the distance of the lightning discharge position from the mobile terminal, and simultaneously uploads the lightning ID, the distance, the time stamp, and the location information of the mobile terminal to the server through the wireless network;
  • the server locates the location of the lightning discharge at a certain moment, and generates a lightning discharge heat map to return to the smart device client;
  • the smart device client receives the information returned by the server.
  • the step S2 includes:
  • step S21 the magnetometer signals collected in step S1 are framed, and each window data is processed;
  • the step S3 includes:
  • step S31A performing time domain analysis on the signal data obtained in step S2;
  • step S31B performing a Fourier transform on the data signal obtained in step S2 using a short-time Fourier transform function to analyze the frequency domain of the signal;
  • the server determines, according to the information uploaded by the mobile terminal, the data uploaded by the mobile terminal that detects the lightning in the discharge location area during the lightning discharge according to the timestamp, and combines the distance information uploaded by the mobile terminal in the area.
  • the geometric principle locates the location of the lightning discharge, generates a lightning discharge heat map according to different lightning information located at different times, and transmits it back to the client of the smart device.
  • the client of the smart device receives the information returned by the server through the network, and gives the user a security prompt according to the information, and provides the client to view the lightning information in the vicinity.
  • the method uses a combination of sensors and microphones built into the phone to detect and measure lightning and to locate lightning in conjunction with multiple handsets in the area.
  • a method for detecting and co-locating lightning using a mobile terminal includes the following steps:
  • the processing unit of the smart device calculates the distance of the lightning discharge position from the mobile phone according to the time difference between the arrival of the LEMP and the thunder, and uploads the lightning ID, distance, time stamp, mobile phone location and the like to the server through the wireless network;
  • the server uses the geometric positioning method to locate the position of the lightning discharge at a certain moment according to the information uploaded by the mobile phone at different positions in the same area, and generates a lightning discharge heat map to return the smart device according to the lightning discharge times of different lightning positions.
  • the client receives the information returned by the server, and gives the user an active security prompt, and the user can also view the lightning history discharge information in the vicinity through the client.
  • the EMP interference of this mode is detected to determine the time of lightning discharge, while the lightning discharge, in the lightning channel, the current Extremely strong, the temperature can rise to 20,000 degrees Celsius, the air pressure suddenly increases, causing the air to expand rapidly, forming a shock, producing thunder, and the speed of thunder and electromagnetic waves is different, so the electromagnetic pulse and thunder arrive at different times.
  • the TOA is used to calculate the distance from the mobile phone when the lightning is discharged. When the mobile phone in the area detects the lightning signal, the distance of the lightning and its position information and time stamp are uploaded to the server through the network through the network, and the server passes through different locations.
  • the data uploaded by the mobile phone is used to locate the lightning, and generate a heat map of the lightning discharge distribution, and then return the information to the mobile terminal display, and the user can judge the lightning information by the neighbor information, and keep away from the dangerous area in time to protect personal safety.
  • the lightning data is collected at a certain frequency by using a magnetometer disposed on the mobile terminal; the data collected by the magnetometer is processed, and is divided into a plurality of devices according to chronological order. a frame data of a predetermined length of time; performing time domain analysis and frequency domain analysis on the divided frame data to obtain a plurality of characteristic parameters of the data; and determining whether the magnetic induction data formed by the lightning is obtained by using the obtained characteristic parameter, and if so, Determining a lightning formation time and turning on a microphone to receive a thunder signal; the processing unit of the smart device calculates a distance between the lightning discharge position and the mobile terminal by a lightning formation time and a thunder reception time, and simultaneously numbers the mobile terminal with the lightning The distance of the above discharge position, the lightning formation time and the position information of the mobile terminal are uploaded to the server through the wireless network; the server transmits the above information of the plurality of mobile terminals, and locates the position of the lightning discharge at a certain moment according to the geometric principle to generate a lightning
  • the graph returns to the plurality of mobile terminals.
  • a plurality of mobile terminals ie, smart devices loaded in the lightning generating area to perform the above functions, and firstly detect whether a magnetic induction signal caused by lightning occurs, and if so, Determine the lightning time and start the microphone to detect the audio signal of the thunder. If detected, you can know the time difference between the lightning and thunder signals reaching the location of the mobile terminal. This basically can obtain the distance from the location where the lightning occurs to the location of the mobile terminal; when such a mobile terminal detects the distance, the server can determine the specific location of the lightning occurrence by the data uploaded by the mobile terminal, and then can use the same. Users of these softwares send out warning signals.
  • the processing of the magnetic induction signal includes: dividing the magnetic induction signal output by the magnetometer, and dividing it into a plurality of segments according to a set time interval, each segment being adjacent on the time axis And each segment has the same length of time; a magnetic induction signal is a data frame, and each data frame is given its start time as its time stamp; each of the data frames is subjected to noise reduction processing, and the filter is used to filter the signal. To remove noise.
  • One of the purposes of segmentation is to more accurately determine when lightning strikes.
  • determining whether the lightning occurs includes performing time domain analysis on the signal data in each data frame to obtain a time domain characteristic thereof, the time domain characteristic including a signal amplitude, a signal energy, and a signal statistic; and the data frame
  • the data signal is Fourier transformed using a short-time Fourier transform function, and the frequency domain of the signal is analyzed to obtain frequency domain characteristics, the frequency domain features include: spectral centroid, spectral entropy, Bandwidth, spectral flux and spectral roll-off; combining the above time domain features and frequency domain features of a data frame to obtain a parameter set of the data frame, and using the parameter set to determine whether there is a discharge and discharge time in the data frame, and if so,
  • the microphone is triggered to collect data; the time-frequency analysis of the sound signal collected by the microphone is performed to detect the arrival time of the thunder. It is worth mentioning that the analysis processing of the above time domain and frequency domain is parallel.
  • the obtained feature parameter set is compared with the previously stored plurality of feature parameter sets one by one, and the plurality of the same type of features in the compared two feature parameter sets are compared.
  • the difference between the parameters is less than the set threshold, it is determined that the lightning discharge exists, and the time stamp corresponding to the currently obtained feature parameter set is taken as the discharge time.
  • the server determines the specific location of the lightning occurrence
  • the server according to the information uploaded by different mobile terminals, according to the The discharge time determines the data uploaded by the mobile terminal detecting lightning in the discharge position area of a lightning discharge, and combines the distance information uploaded by the mobile terminal in the area to locate the position of the lightning discharge by geometric principle, according to different positions at different times.
  • Lightning information generate a lightning discharge heat map, and pass it back to the client of the smart device.
  • the client of the smart device receives the information returned by the server through the network, and gives the user a security prompt according to the information, and provides the client to view the lightning information nearby.
  • smart phones ie smart devices or mobile terminals
  • sensors such as gyroscopes, accelerometers, magnetometers, microphones, light sensors and distance sensors. Based on these sensors, the above method can be easily implemented by the cooperation of a plurality of mobile terminals.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Remote Sensing (AREA)
  • Environmental Sciences (AREA)
  • Ecology (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Atmospheric Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
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Abstract

L'invention se rapporte au domaine de la localisation du tonnerre et de la foudre. L'invention concerne un procédé utilisant un terminal mobile pour détecter et localiser en coopération la foudre. Le procédé comprend les étapes suivantes consistant : S1. à utiliser le magnétomètre d'un dispositif intelligent pour collecter des données de tonnerre et de foudre à une fréquence donnée (S1) ; S2. à effectuer un traitement sur les données collectées par le magnétomètre (S21, S22) ; et S3. à effectuer une analyse de domaine temporel (S31A) et une analyse de domaine fréquenciel (S31B) sur des données de trame divisées. Le procédé utilisant un terminal mobile pour détecter et localiser en coopération la foudre peut obtenir une distance de foudre précise, et a une performance de coût élevée et une grande gamme d'applications.
PCT/CN2017/091667 2016-08-26 2017-07-04 Procédé d'utilisation d'un terminal mobile pour détecter et localiser en coopération la foudre WO2018036280A1 (fr)

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CN201610731450.7 2016-08-26
CN201610731450.7A CN106324562A (zh) 2016-08-26 2016-08-26 使用移动终端检测和协同定位闪电的方法

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CN113850226A (zh) * 2021-10-15 2021-12-28 南通大学 用于闪电先导辐射的信号不规则度分析方法
CN114675131A (zh) * 2022-03-30 2022-06-28 国网福建省电力有限公司莆田供电公司 基于电力网架微观气象检测系统的雷电定位方法及系统
CN116910469A (zh) * 2023-06-28 2023-10-20 南通大学 一种基于三通道ResNet的闪电信号处理方法

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CN114339016A (zh) * 2020-09-29 2022-04-12 北京小米移动软件有限公司 相机拍摄方法、装置及介质
CN113189572B (zh) * 2021-04-15 2023-11-17 南京维沃软件技术有限公司 雷电距离提示方法、装置、电子设备和可读存储介质

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CN116910469A (zh) * 2023-06-28 2023-10-20 南通大学 一种基于三通道ResNet的闪电信号处理方法

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