CN202093101U - Lightning detecting locating system - Google Patents
Lightning detecting locating system Download PDFInfo
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- CN202093101U CN202093101U CN2011201991817U CN201120199181U CN202093101U CN 202093101 U CN202093101 U CN 202093101U CN 2011201991817 U CN2011201991817 U CN 2011201991817U CN 201120199181 U CN201120199181 U CN 201120199181U CN 202093101 U CN202093101 U CN 202093101U
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Abstract
The utility model discloses a lightning detecting locating system, which relates to the technical field of meteorological detection. The system comprises an antenna unit, a receiver unit, a waveform feature extraction processing unit and a measurement and control unit. The antenna unit is used for detecting electromagnetic field change signals when lightning occurs, detecting global positioning system (GPS) satellite signals, and sending the electromagnetic field change signals and the GPS satellite signals to the receiver unit. The receiver unit is used for receiving the electromagnetic field change signals and the GPS satellite signals. The waveform feature extraction processing unit is used for extracting waveform feature parameters of the electromagnetic field change signals in real time, analyzing and processing the waveform feature parameters, and obtaining cloud-to-ground lightning distinguishing results and ground lightning locating results. The measurement and control unit is used for collecting and storing waveforms of the electromagnetic field change signals in real time, recording the time for collecting the lightning waveforms, and displaying positions of ground lightning in a geographical information system in real time. The lightning detecting locating system is a multifunctional single-station lightning detecting locating system which is capable of collecting lightning waveforms and locating lightning return stroke.
Description
Technical field
The utility model relates to the meteorological observation technical field, relates in particular to a kind of lightning detection positioning system.
Background technology
Lightning is one of the most serious disaster of China, because it has characteristics such as big electric current, strong electromagnetic radiation, usually causes accidents such as forest fire, oil depot blast, power failure, communication failure, damage of facilities, also causes casualties easily.According to conservative estimation, the thousands of people of casualties that China causes because of the thunder calamity every year, direct economic loss surpasses several hundred million units, and indirect economic loss that causes thus and influence are difficult to estimate, the thunder and lightning disaster has fed through to the every aspect of all trades and professions and life.Also invaded by the thunderbolt mode from the three dimensions that lightning is attacked directly, the transmission along the line of superpotential ripple expands to the lightning radiation field.Because thunder and lightning causes disaster rapidly, and brought great difficulty, so developed the lightning detection technology and early alarming and forecasting method is current very urgent task to its research, forecast and control.Single station lightning detection systemic-functions at present both domestic and external are all more single, can not satisfy needs of society.Up to now, also do not have to carry out simultaneously the commercially produced product of lightning location and electric field change measurement both at home and abroad, be not fit to the electric field change measuring equipment of service operation yet.
The utility model content
(1) technical matters that will solve
The technical problems to be solved in the utility model is: how a kind of lightning detection positioning system of carrying out the lightning detection location, multifunctional single station of lightning waveform acquisition and lightning counterattack location is provided.
(2) technical scheme
For addressing the above problem, the utility model provides a kind of lightning detection positioning system, this system comprises: antenna element, electromagnetic field variable signal when being used to survey the lightning generation, survey gps satellite signal, and described electromagnetic field variable signal and described gps satellite signal are sent to receiver unit; Receiver unit links to each other with described antenna element, is used to receive described electromagnetic field variable signal and described gps satellite signal; Waveform character extracts processing unit, links to each other with described receiver unit, is used for extract real-time electromagnetic field variable signal waveform character parameter, and it is carried out analyzing and processing, obtains cloud ground and dodges identification result and ground sudden strain of a muscle positioning result; Measurement and control unit, all link to each other with described waveform character extraction processing unit and receiver unit, be used for gathering in real time and storing described electromagnetic field variable signal waveform, mark is gathered the time of described lightning waveform, shows that in real time ground dodges the position in Geographic Information System.
Wherein, described antenna element further comprises: electric field changes antenna soon, the electric field change signal when being used to survey the lightning generation; The quadrature field antenna, the magnetic field variation signal when being used to survey the lightning generation; Gps antenna is used to survey gps satellite signal.
Wherein, it is capacity plate antenna that described electric field changes antenna soon, and described quadrature field antenna is two and has identical ring sectional area and coil turn and perpendicular toroidal conductor circle.
Wherein, described receiver unit further comprises: the electromagnetic change receiver, change antenna soon with described electric field and described quadrature field antenna links to each other, receive described electric field change signal and magnetic field variation signal, and it is carried out integration and filter amplifying processing; The GPS receiver links to each other with described gps antenna, receives described gps satellite signal.
Wherein, described waveform character extraction processing unit is an on-site programmable gate array FPGA.
Wherein, described measurement and control unit further comprises: data collecting card, link to each other with described receiver unit, and be used for gathering in real time described electromagnetic field variable signal waveform; Measure to handle subelement, link to each other, be used to control sampling length, sampling rate, triggering mode, activation threshold value, store path and the storage mode of described data collecting card with described data collecting card, with the time show described signal waveform; The locating and displaying subelement extracts processing unit with described waveform character and links to each other, and is used for showing the position of dodging in Geographic Information System describedly.
Wherein, this system also comprises: the self check alignment unit, link to each other with described antenna element and receiver unit, and be used to described antenna element that standard signal is provided, and provide correction coefficient for system; Power supply unit extracts processing unit, measurement and control unit and self check alignment unit with described receiver unit, waveform character and links to each other, and is above-mentioned each unit power supply; The protection body unit covers on outside described antenna element, receiver unit, waveform character extraction processing unit and the self calibration unit, for above-mentioned each unit provides support and protects.
(3) beneficial effect
System of the present utility model adopts high-speed high capacity data acquisition and gps time simultaneous techniques, is combined together in thunder and lightning location and waveform acquisition, has increased the monitoring function to the physical process of lightning microsecond, submicrosecond time scale.Simultaneously, the lightning occurrence type can be provided, fight back number, time of origin, occurrence positions information, and can show above-mentioned information and lightning electromagnetic field waveform in real time.According to analysis and judgement, increased cloud and dodged tally function lightning electric field change waveform.This system can be synchronous with other thunder and lightning measuring equipments, and the lightning discharge process is carried out INTEGRATED SIGHT, replenished existing scope.
Description of drawings
Fig. 1 is the lightning detection positioning system structured flowchart according to a kind of embodiment of the utility model;
Fig. 2 is the lightning detection localization method process flow diagram based on the lightning detection positioning system of a kind of embodiment of the utility model;
Fig. 3 is the lightning detection positioning system medium cloud ground sudden strain of a muscle counting process flow diagram according to a kind of embodiment of the utility model.
Embodiment
The lightning detection positioning system that the utility model proposes reaches embodiment in conjunction with the accompanying drawings and is described in detail as follows.
System of the present utility model is fit to the lightning detection location, multifunctional single station of lightning waveform acquisition and lightning counterattack location, and this system has collection of lightning electromagnetic wave waveform high time resolution and sudden strain of a muscle location, ground dual-use function.As shown in Figure 1, the lightning detection positioning system according to a kind of embodiment of the utility model comprises: antenna element 100, receiver unit 200, waveform character extract processing unit 300, measurement and control unit 400, self check alignment unit 500, power supply unit 600 and protection body unit 700.
Waveform character extracts processing unit 300, links to each other with receiver unit 200, is used for extract real-time electromagnetic field variable signal waveform character parameter, and it is carried out analyzing and processing, obtains cloud ground and dodges identification result and ground sudden strain of a muscle positioning result.This waveform character extracts processing unit 300 and is preferably on-site programmable gate array FPGA.
Measurement and control unit 400, all link to each other with waveform character extraction processing unit 300 and receiver unit 200, be used for gathering in real time and store electricity magnetic field variation signal original waveform, mark is gathered the time of described electromagnetic field variable signal waveform, and, show that in real time ground dodges the position in Geographic Information System according to described gps satellite signal.This measurement and control unit 400 further comprises: data collecting card 401, link to each other with receiver unit 200, and be used for gathering in real time the electromagnetic field waveform; Measure to handle subelement 402, link to each other, can control the parameters such as sampling length, sampling rate, triggering mode, activation threshold value and store path, storage mode of this data collecting card 401 with this data collecting card 401; Locating and displaying subelement 403 extracts processing unit 300 with waveform character and is connected, and shows that ground dodges the position in Geographic Information System.This data collecting card 401 and measurement are handled subelement 402 and are preferably located in the computing machine (industrial computer).
Self check alignment unit 500 links to each other with receiver unit 200 and antenna element 100, is used to antenna element 100 and receiver unit 200 that standard signal is provided, and after acquisition testing, system is provided correction coefficient.This unit is preferably the reference waveform generator.
As shown in Figure 2, the lightning detection localization method based on the lightning detection positioning system of a kind of embodiment of the utility model comprises step:
S1. antenna element is sent to receiver unit with electromagnetic field variable signal and the gps satellite signal that detects;
S2. judge whether the electromagnetic field variable quantity surpassed the activation threshold value of setting when lightning took place, if, execution in step S3 then, otherwise, wait for;
S3. waveform character extracts processing unit and gathers this electromagnetic field variable signal waveform character parameter, and it is carried out analyzing and processing, obtains cloud ground and dodges identification result and ground sudden strain of a muscle positioning result; This electromagnetic field variable signal waveform is gathered and preserved to measurement and control unit in real time, and mark is gathered the time of this electromagnetic field variable signal waveform, and show that ground dodges the position in Geographic Information System.
Because gps data is passed to industrial computer by serial ports, image data is passed to industrial computer by Peripheral Component Interconnect standard (PCI) bus, for the pci bus data that guarantee a certain second serial data and this second the time engrave can be correctly corresponding, the data transfer of data collecting card 401 must guarantee hard real time, therefore data collecting card 401 all can interrupt to the industrial computer application at the rising edge of each 1PPS pulse, arrive in data volume and also can interrupt when a certain amount of to the industrial computer application, the industrial computer response is interrupted, and the data on the data collecting card 401 are all read industrial computer.
Wherein, among the step S3, native system is judged the lightning type by the wave form varies feature of analyzing the lightning electric field, chooses following typical electric field eigenwert as basis for estimation: the zero-crossing timing of peak electric field, electric field initial value, 10%-90% duration of peak value, negative edge, whole duration of rising edge.Waveform character extracts processing unit 300 and differentiates that the method that cloud ground dodges is:
If electric field change signal three in meeting the following conditions simultaneously judge that then lightning dodges with being:
(a) 0.8 μ s＜electric field 10%-90% duration of peak value＜8 μ s;
(b) twice of peak electric field＞electric field initial value;
(c) peak electric field＞0.5V;
(d) negative edge zero-crossing timing＞10 μ s;
The judgement that cloud dodges is dodged with being based upon and is got rid of on the basis, if the electric field change signal satisfies following three conditions simultaneously, judges that then lightning is that cloud dodges:
(e) pulse width＜8 μ s;
(f) rising edge time＞negative edge time;
(g) dodge non-ly.
After correct identification cloud ground dodges, dodge over the ground and position and cloud dodges and counts, the counting standard is, the waveform of 1s record length is analyzed, and defines cloud flash pulsing person, is recorded as 1 time, as shown in Figure 3.
The method that waveform character extraction processing unit 300 dodges the location with carrying out comprises step:
S3.1 extracts electromagnetic field variable signal information;
S3.2 compares the induced voltage in two magnetic field antennas, the position angle of low frequency magnetic field when obtaining being struck by lightning;
Electromagnetism peak strength constantly takes place according to lightning in S3.3, obtains the range information of lightning;
S3.4 obtains the occurrence positions that ground dodges according to the latitude and longitude information of the range information and the acquisition station of the position angle of dodging low frequency magnetic field, described lightning describedly.
Wherein, it is as follows to dodge the principle in orientation among the step S3.2 definitely:
To have identical ring sectional area and coil turn two loop antenna perpendicular quadratures be placed on the ground, wherein two coil section normals point to and are respectively north and south and thing.At this moment, the electromotive force of two loop antennas induction will be respectively:
Get the arc tangent of its ratio:
Or
This shows, as long as strictness accomplishes that two loop antenna coil turns are identical, sectional area is identical, mutually orthogonal, the arc tangent of the ratio of their induction electromotive forces can provide the position angle in lightning source, wherein, 180 ° blur level can be eliminated according to the principle of wave line, electric field and magnetic-field component three mutually orthogonal by the direction of electric field component.
Above embodiment only is used to illustrate the utility model; and be not to restriction of the present utility model; the those of ordinary skill in relevant technologies field; under the situation that does not break away from spirit and scope of the present utility model; can also make various variations and modification; therefore all technical schemes that are equal to also belong to category of the present utility model, and scope of patent protection of the present utility model should be defined by the claims.
Claims (7)
1. a lightning detection positioning system is characterized in that, this system comprises:
Antenna element, the electromagnetic field variable signal when being used to survey the lightning generation is surveyed gps satellite signal, and described electromagnetic field variable signal and described gps satellite signal are sent to receiver unit;
Receiver unit links to each other with described antenna element, is used to receive described electromagnetic field variable signal and described gps satellite signal;
Waveform character extracts processing unit, links to each other with described receiver unit, is used for extract real-time electromagnetic field variable signal waveform character parameter, and it is carried out analyzing and processing, obtains cloud ground and dodges identification result and ground sudden strain of a muscle positioning result;
Measurement and control unit, all link to each other with described waveform character extraction processing unit and receiver unit, be used for gathering in real time and storing described electromagnetic field variable signal waveform, mark is gathered the time of described lightning waveform, shows that in real time ground dodges the position in Geographic Information System.
2. lightning detection positioning system as claimed in claim 1 is characterized in that, described antenna element further comprises:
Electric field changes antenna soon, the electric field change signal when being used to survey the lightning generation;
The quadrature field antenna, the magnetic field variation signal when being used to survey the lightning generation;
Gps antenna is used to survey gps satellite signal.
3. lightning detection positioning system as claimed in claim 2 is characterized in that, it is capacity plate antenna that described electric field changes antenna soon, and described quadrature field antenna is two and has identical ring sectional area and coil turn and perpendicular toroidal conductor circle.
4. lightning detection positioning system as claimed in claim 3 is characterized in that, described receiver unit further comprises:
The electromagnetic change receiver changes antenna soon with described electric field and described quadrature field antenna links to each other, and receives described electric field change signal and magnetic field variation signal, and it is carried out integration and filter amplifying processing;
The GPS receiver links to each other with described gps antenna, receives described gps satellite signal.
5. lightning detection positioning system as claimed in claim 1 is characterized in that, it is on-site programmable gate array FPGA that described waveform character extracts processing unit.
6. lightning detection positioning system as claimed in claim 1 is characterized in that, described measurement and control unit further comprises:
Data collecting card links to each other with described receiver unit, is used for gathering in real time described electromagnetic field variable signal waveform;
Measure to handle subelement, link to each other, be used to control sampling length, sampling rate, triggering mode, activation threshold value, store path and the storage mode of described data collecting card with described data collecting card, with the time show described signal waveform;
The locating and displaying subelement extracts processing unit with described waveform character and links to each other, and is used for showing the position of dodging in Geographic Information System describedly.
7. lightning detection positioning system as claimed in claim 1 is characterized in that, this system also comprises:
The self check alignment unit links to each other with described antenna element and receiver unit, is used to described antenna element that standard signal is provided, and provides correction coefficient for system;
Power supply unit extracts processing unit, measurement and control unit and self check alignment unit with described receiver unit, waveform character and links to each other, and is above-mentioned each unit power supply;
The protection body unit covers on outside described antenna element, receiver unit, waveform character extraction processing unit and the self calibration unit, for above-mentioned each unit provides support and protects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201991817U CN202093101U (en) | 2011-06-13 | 2011-06-13 | Lightning detecting locating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201991817U CN202093101U (en) | 2011-06-13 | 2011-06-13 | Lightning detecting locating system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338830A (en) * | 2011-06-13 | 2012-02-01 | 中国气象科学研究院 | Lightning detection and positioning system and method |
| CN102621414A (en) * | 2012-03-16 | 2012-08-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Method and system for comprehensively and synchronously observing lightning stroke discharge |
| CN102680804A (en) * | 2012-05-09 | 2012-09-19 | 中国气象科学研究院 | Lightning electric field change signal measuring system and method |
| CN107091957A (en) * | 2017-03-13 | 2017-08-25 | 张宁 | A kind of thunder measuring and orientation system and its localization method |
| CN108845188A (en) * | 2018-07-11 | 2018-11-20 | 云南电网有限责任公司电力科学研究院 | A kind of mono-station location method and system of remote cloud-to-ground flash |
| CN109884407A (en) * | 2019-03-28 | 2019-06-14 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Electromagnet shield effect measuring system and measurement method |
| CN116299111A (en) * | 2022-12-02 | 2023-06-23 | 中国气象局气象探测中心 | Lightning positioning instrument detection fault diagnosis instrument |
-
2011
- 2011-06-13 CN CN2011201991817U patent/CN202093101U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102338830A (en) * | 2011-06-13 | 2012-02-01 | 中国气象科学研究院 | Lightning detection and positioning system and method |
| CN102338830B (en) * | 2011-06-13 | 2013-08-28 | 中国气象科学研究院 | Lightning detection and positioning system and method |
| CN102621414A (en) * | 2012-03-16 | 2012-08-01 | 国网电力科学研究院武汉南瑞有限责任公司 | Method and system for comprehensively and synchronously observing lightning stroke discharge |
| CN102680804A (en) * | 2012-05-09 | 2012-09-19 | 中国气象科学研究院 | Lightning electric field change signal measuring system and method |
| CN102680804B (en) * | 2012-05-09 | 2014-12-24 | 中国气象科学研究院 | Lightning electric field change signal measuring system and method |
| CN107091957A (en) * | 2017-03-13 | 2017-08-25 | 张宁 | A kind of thunder measuring and orientation system and its localization method |
| CN107091957B (en) * | 2017-03-13 | 2019-11-12 | 张宁 | A kind of thunder measuring and orientation system and its localization method |
| CN108845188A (en) * | 2018-07-11 | 2018-11-20 | 云南电网有限责任公司电力科学研究院 | A kind of mono-station location method and system of remote cloud-to-ground flash |
| CN109884407A (en) * | 2019-03-28 | 2019-06-14 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Electromagnet shield effect measuring system and measurement method |
| CN109884407B (en) * | 2019-03-28 | 2021-02-23 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Electromagnetic shielding effectiveness measuring system and measuring method |
| CN116299111A (en) * | 2022-12-02 | 2023-06-23 | 中国气象局气象探测中心 | Lightning positioning instrument detection fault diagnosis instrument |
| CN116299111B (en) * | 2022-12-02 | 2023-09-19 | 中国气象局气象探测中心 | Lightning positioning instrument detection fault diagnosis instrument |
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