CN102621414A - Method and system for comprehensively and synchronously observing lightning stroke discharge - Google Patents
Method and system for comprehensively and synchronously observing lightning stroke discharge Download PDFInfo
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Abstract
The invention relates to a method and a system for comprehensively and synchronously observing lightning stroke discharge. The method is based on a global positioning system (GPS) timing technology, and the lightning stroke discharge is observed by the observation system. The method comprises the following steps of: providing the activity trend of lightning storm by using a wide area lightning location system, and reminding the arrival of the lightning storm by using an atmospheric average electric field instrument; and outputting an alternating current (AC) B code signal to a high-speed image pickup device by using a GPS timing device, marking the formation time of each frame of picture by using a clock system, receiving a time to live (TTL) level signal from a lightning high-speed trigger device, outputting correct time t corresponding to a TTL level rising edge to a personal computer (PC), and recording the TTL level signal and electrical and acoustic measurement signals by using a high-speed data storage recorder. The system comprises the wide area lightning location system, a data analysis and processing server, the atmospheric average electric field instrument, the high-speed image pickup device, the lightning high-speed trigger device, a quick electric field change instrument, a slow electric field change instrument, a magnetic field measuring instrument, an array thunder detection device, the high-speed data storage recorder and the GPS timing device.
Description
Technical field
The present invention relates to thunder and lightning physics and lightning protection technical research field, the comprehensive simultaneous observation method and system of especially a kind of lightning discharge.
Background technology
To the lightning discharge INTEGRATED SIGHT is the important means of understanding lightning discharge evolution; Because randomness and instantaneity that nature lightning takes place; The scope that requirement is used for lightning discharge has higher spatial and temporal resolution; Along with electronic technology and fast development of computer technology, the performance of single scope obtains large development, and how synchronously just to become the key issue that need to be resolved hurrily between each equipment this moment.The applicant is through test and discover that the concrete characteristic quantity of physical aspect, electricity, optics and the acoustics of the thunder and lightning of inscribing when having only the realization simultaneous observation accurately to obtain each is to reach the purpose of accurately obtaining the lightning discharge characteristic parameter.
In order to realize Synchronization Analysis to physical features amounts such as the electricity that measured, optics; Common way is to infer by Physical Mechanism; As suppose that the complete corresponding moment of that bright photograph frame of high-speed camera photo forms constantly for fighting back passage; The variation characteristic of " fighting back the initial moment " according to the electrical characteristic amount is then inferred the mutual time corresponding relation between electricity, the optical signature parameter.The applicant thinks that there is certain error in this method, is difficult to reach the microsecond order of magnitude precision that thunder discharge is measured.
Know according to the applicant; The randomness of lightning discharge can cause the inefficiency of conventional lightning discharge observation; In order to guarantee that to catching of thunder and lightning at random, way commonly used in the industry is to make scope be in charged duty for a long time, the result who does like this can cause potential safety hazard to produce; Also can cause bad consequence simultaneously, promptly scope is in the serviceable life that charged duty will shorten scope greatly for a long time.
Summary of the invention
The objective of the invention is,, improve, propose and study the comprehensive simultaneous observation method and system of a kind of lightning discharge, to realize high-level efficiency simultaneous observation the lightning discharge process to the deficiency that above-mentioned prior art exists.
Technical solution of the present invention is: the comprehensive simultaneous observation method of a kind of lightning discharge, and based on the GPS Service of Timing, adopt recording geometry to observe, it is characterized in that recording geometry adopts the comprehensive simultaneous observation of lightning discharge system, its observation procedure is following:
1) the comprehensive simultaneous observation of lightning discharge system uses the wide area lightning location system that the thunderstorm activity trend is provided, and uses atmosphere average electric field appearance to provide thunderstorm to arrive to remind;
2) the comprehensive simultaneous observation of lightning discharge system adopts GPS time service device output AC B coded signal to give the clock input interface of high speed video camera; Indicate the formation time of every photograph frame in high speed video camera clock internal system; The GPS time service device receives the Transistor-Transistor Logic level signal from lightning high speed flip flop equipment simultaneously; And the correct time t of output Transistor-Transistor Logic level rising edge correspondence is to PC (or host computer or central server); Carry out record by its application software; High-speed data stored record device recording Transistor-Transistor Logic level signal and electricity, acoustic measurement signal, according to the time interval Δ t between Transistor-Transistor Logic level signal rising edge time corresponding t and the sampled data points, the correct time that calculates n point of electricity, acoustic measurement signal is t+n Δ t; Through the accurate moment that comparison waveform data points correct time and optical pickup photo form, realize the synchronous of each observed quantity of lightning discharge Integrated Observation System.
It is characterized in that, use the wide area lightning location system that the thunderstorm activity trend is provided, arrive whenever wide area lightning location system prompting thunderstorm is movable; Simultaneously atmosphere average electric field appearance is surveyed when electric field is higher than setting value near the ground, judge whether to satisfy by the data analysis processing server pre-conditioned, pre-conditioned when satisfying; Be the automatic start up system power supply, make all devices energising and get into preparatory triggering state, after lightning high speed flip flop equipment receives the high light that lightning sends; Output Transistor-Transistor Logic level signal triggers all observational record equipment and stores all data automatically, and whether the measured value through judging atmosphere average electric field appearance is greater than the threshold value that quits work of setting; If greater than the threshold value of setting that quits work; Equipment recovers preparatory triggering state automatically, waits for that lightning triggers next time, if less than the threshold value of setting that quits work; All devices quits work, and the parting system power supply.
The comprehensive simultaneous observation of above-mentioned lightning discharge system; Comprise wide area lightning location system, data analysis processing server, atmosphere average electric field appearance, high speed video camera, lightning high speed flip flop equipment, fast electric field change appearance, slow electric field change appearance, magnetic field measuring apparatus, array thunder sniffer, high-speed data stored record appearance, GPS time service device; It is characterized in that; Described data analysis processing server is connected with wide area lightning location system, atmosphere average electric field appearance, high speed video camera through the Ethernet netting twine; Described lightning high speed flip flop equipment is connected with high speed video camera, high-speed data stored record appearance, GPS time service device, and output Transistor-Transistor Logic level signal is given institute's connection device behind the high light that the reception lightning discharge sends; Described high-speed data stored record appearance is connected with lightning high speed flip flop equipment, fast electric field change appearance, slow electric field change appearance, magnetic field measuring apparatus, array thunder sniffer, after receiving the Transistor-Transistor Logic level signal, triggers and write down trigger pip, fast electric field waveform, slow electric field waveform, field waveform, thunder waveform.
It is characterized in that said wide area lightning location system comprises thunder and lightning electromagnetic wave detection station, server and application software thereof, be used to provide thunderstorm activity trend figure.
It is characterized in that said atmosphere average electric field appearance comprises atmosphere inductor, signal processing circuit, display system, be used to provide thunderstorm to arrive to remind, the output early warning signal is with the control system power supply.
It is characterized in that said fast electric field change appearance comprises metal plate, integrating circuit, treatment circuit, fast electric field change waveform when being used for surveying thunderbolt; Said slow electric field change appearance comprises metal plate, integrating circuit, treatment circuit, slow electric field change waveform when being used for surveying thunderbolt.
It is characterized in that said magnetic field measuring apparatus comprises quadrature squaerial, signal processing circuit, be used to survey east-west direction, North and South direction field waveform.
It is characterized in that said array thunder sniffer comprises microphone array, signal processing circuit, be used for the thunder signal that detects is converted into the voltage signal that is convenient for measuring.
It is characterized in that said high-speed data stored record appearance comprises high-speed data acquisition card, industrial computer, is used to write down all electrical signal.
It is characterized in that; Said GPS time service device comprises that GPS receiver module, high precision clock module, IRIG-B clock signal module, outer triggering signal time beats yard module and I/O interface; GPS receiver module and GPS receiving antenna connect; GPS receiver module and high precision clock letter module are joined and are connected; High precision clock letter module and IRIG-B clock signal module and outer triggering signal time mark module connect, and IRIG-B clock signal module links to each other with the I/O interface respectively with outer triggering signal time mark module.
Following advantage and good effect that the present invention has:
1) the present invention utilizes wide area lightning location system thunderstorm activity trend, and the early warning in short-term of arriving of atmospheric electric field detector thunderstorm starts recording geometry automatically, reduces scope and continues electrification time, improves scope serviceable life.
2) employing according to the invention can realize high-precise synchronization between each vertical frame dimension speed shooting photo and electricity, the acoustics observed quantity data based on the synchronization scenario of GPS Service of Timing, helps further carrying out in a deep going way the research of lightning discharge physical process.
3) recording geometry according to the invention adopts the time service of GPS time service device, and observation data and wide area lightning location system monitoring result realize synchronously comprehensive, realizes the mutual checking of observed result and the purpose of assistant analysis.
Description of drawings
The comprehensive simultaneous observation system architecture diagram of Fig. 1 lightning discharge of the present invention
The comprehensive simultaneous observation system works of Fig. 2 lightning discharge of the present invention theory diagram
The GPS time service device theory diagram that the comprehensive simultaneous observation of Fig. 3 lightning discharge of the present invention system adopts
Embodiment
Below, combine accompanying drawing that the present invention is described further with specific embodiment:
Like Fig. 1, shown in Figure 2, the comprehensive simultaneous observation method of a kind of lightning discharge that the present invention proposes adopts the comprehensive simultaneous observation of lightning discharge system, realizes the high-level efficiency simultaneous observation to the lightning discharge process.Its observation procedure is following:
1) the comprehensive simultaneous observation of lightning discharge system uses wide area lightning location system 1 that the thunderstorm activity trend is provided, and uses atmosphere average electric field appearance 3 to provide thunderstorm to arrive to remind;
2) the comprehensive simultaneous observation of lightning discharge system adopts GPS time service device 11 output AC B coded signals to give the clock input interface of high speed video camera 4; Indicate the formation time of every photograph frame in high speed video camera 4 clock internal systems; GPS time service device 11 receives the Transistor-Transistor Logic level signal from lightning high speed flip flop equipment 5 simultaneously; And the correct time t of output Transistor-Transistor Logic level rising edge correspondence is to PC (or host computer or central server); Carry out record by its application software; High-speed data stored record device employing high-speed data stored record appearance 10 record Transistor-Transistor Logic level signals and electricity, acoustic measurement signal, according to the time interval Δ t between Transistor-Transistor Logic level signal rising edge time corresponding t and the sampled data points, the correct time that calculates n point of electricity, acoustic measurement signal is t+n Δ t; Through the accurate moment that comparison waveform data points correct time and optical pickup photo form, each observed quantity that realizes obtaining the observation lightning discharge.
The basic step of method of the present invention in implementing utilization is to arrive when wide area lightning location system 1 prompting thunderstorm is movable, when electric field is higher than setting value near the atmosphere average electric field appearance 3 detection ground simultaneously; By data analysis processing server 2 judge satisfy pre-conditioned, the automatic start up system power supply, all scopes energisings also get into preparatory triggering state; Lightning high speed flip flop equipment 5 receives the high light that lightning sends, and output Transistor-Transistor Logic level signal triggers all observational record equipment and stores all data automatically; Through judging atmosphere average electric field appearance 3 measured values whether greater than the setting threshold value that quits work, if greater than the setting threshold value that quits work, equipment recovers preparatory triggering state automatically; Wait for that lightning triggers next time; As if the threshold value that quits work less than setting, all scopes quit work, and deenergization.Realize automatic observation through above-mentioned steps, reduce the charged working time of scope simultaneously, prolong its serviceable life the lightning discharge process.
When carrying out simultaneous observation,, export the Transistor-Transistor Logic level signal immediately when lightning high speed flip flop equipment 5 receives the high light that lightning sends.The Transistor-Transistor Logic level signal is used to trigger high-speed data stored record appearance 10.By triggering fast electric field signal, slow electric field signal, field signal, the thunder signal that 10 storages of high-speed data stored record appearance and record obtain, obtain the relative time relation between Transistor-Transistor Logic level signal rising edge and other electrical signal simultaneously; Lightning high speed flip flop equipment 5 output Transistor-Transistor Logic level to GPS time service devices 11 obtain the corresponding correct time t of TTL signal rising edge; The output time signal is by the PC record; According to the time interval Δ t between Transistor-Transistor Logic level signal rising edge time corresponding t and the electricity waveform data points, the correct time that can calculate the n data points is t+n Δ t; Lightning high speed flip flop equipment 5 output Transistor-Transistor Logic level signals are used to trigger high speed video camera 4 simultaneously and take storage picture; GPS time service device 11 output IRIG-B form time signals are to high speed camera head 4, and high speed video camera 4 internal clocking systems indicate the correct time t that every photograph frame forms
1, through the correct time t of comparison waveform data points correct time t+n Δ t and the formation of optical pickup photo
1, can obtain the every photograph frame of optics and form constantly and the accurate corresponding relation of waveform data points, available accurate moment t searches amplitude of lightning current, the polarity that wide area lightning location system 1 records and fights back result such as number of times and is used for assistant analysis simultaneously; Be struck by lightning according to the observation procedure of proposition of the present invention and put observation, could really realize lightning discharge Integrated Observation System high-precise synchronization.
The comprehensive simultaneous observation of above-mentioned lightning discharge system comprises wide area lightning location system 1, data analysis processing server 2, atmosphere average electric field appearance 3, high speed video camera 4, lightning high speed flip flop equipment 5, fast electric field change appearance 6, slow electric field change appearance 7, magnetic field measuring apparatus 8, array thunder sniffer 9, high-speed data stored record appearance 10, GPS time service device 11 and PC.The comprehensive simultaneous observation system disposition of lightning discharge system power supply.Wherein, Data analysis processing server 2 is connected with wide area lightning location system 1, atmosphere average electric field appearance 3, high speed video camera 4 through the Ethernet netting twine; Lightning high speed flip flop equipment 5 is connected with high speed video camera 4, high-speed data stored record appearance 10, GPS time service device 11, and output Transistor-Transistor Logic level signal is given institute's connection device behind the high light that the reception lightning discharge sends; High-speed data stored record appearance 10 is connected with lightning high speed flip flop equipment 5, fast electric field change appearance 6, slow electric field change appearance 7, magnetic field measuring apparatus 8, array thunder sniffer 9, after receiving the Transistor-Transistor Logic level signal, triggers and write down trigger pip, fast electric field waveform, slow electric field waveform, field waveform, thunder waveform.Wide area lightning location system 1 comprises thunder and lightning electromagnetic wave detection station, server and application software thereof, is used to provide thunderstorm activity trend figure.Atmosphere average electric field appearance 3 comprises atmosphere inductor, signal processing circuit, display system, is used to provide thunderstorm to arrive to remind, and the output early warning signal is with the control system power supply.Fast electric field change appearance 6 comprises metal plate, integrating circuit, treatment circuit, fast electric field change waveform when being used for surveying thunderbolt.Slow electric field change appearance 7 comprises metal plate, integrating circuit, treatment circuit, slow electric field change waveform when being used for surveying thunderbolt.Magnetic field measuring apparatus 8 comprises quadrature squaerial, signal processing circuit, is used to survey east-west direction, North and South direction field waveform.Array thunder sniffer 9 comprises microphone array, signal processing circuit, is used for being converted into the voltage signal that is convenient for measuring with surveying the thunder signal.High-speed data stored record appearance 10 comprises high-speed data acquisition card, industrial computer, is used to write down all electrical signal.
As shown in Figure 3; GPS time service device 11 comprises that GPS receiver module 11.2, high precision clock module 11.3, IRIG-B clock signal module 11.4, outer triggering signal time beats yard module 11.5 and I/O interface 11.6; Be used to receive gps satellite signal and export accurate IRIG-B form amplitude modulation time signal, receive the corresponding temporal information of Transistor-Transistor Logic level signal and outputs level signals rising edge.GPS receiver module 11.2 connects with GPS receiving antenna 11.1; GPS receiving antenna 11.1 reception space electromagnetic waveforms signals; By GPS receiver module 11.2 analytic signals output second level pulse signal; GPS receiver module 112 is joined with high precision clock letter module 11.3 and is connected, and realizes output high precision, high stability clock signal by high precision clock module 11.3, and high precision clock letter module 11.3 connects with IRIG-B clock signal module 11.4 and outer triggering signal time mark module 11.5.IRIG-B clock signal module 11.4 outputting standard IRIG-B format signals, and link to each other with the interface clock signal of high speed video camera 4 through I/O interface 11.6, outer triggering signal time mark module 11.5 links to each other with the I/O interface.Outer triggering signal time mark module 11.5 receives outside input Transistor-Transistor Logic level signal, and the mark time signal that output signal rising edge is corresponding is given PC.
Claims (10)
1. the comprehensive simultaneous observation method of lightning discharge based on the GPS Service of Timing, adopts recording geometry to observe, and it is characterized in that recording geometry adopts the comprehensive simultaneous observation of lightning discharge system, and its observation procedure is following:
1) the comprehensive simultaneous observation of lightning discharge system uses wide area lightning location system (1) that the thunderstorm activity trend is provided, and uses atmosphere average electric field appearance to provide thunderstorm to arrive to remind;
2) the comprehensive simultaneous observation of lightning discharge system adopts GPS time service device (11) output AC B coded signal to give the clock input interface of high speed video camera (4); Indicate the formation time of every photograph frame in high speed video camera (4) clock internal system; GPS time service device (11) receives the Transistor-Transistor Logic level signal from lightning high speed flip flop equipment (5) simultaneously; And the correct time t of output Transistor-Transistor Logic level rising edge correspondence is to PC (or host computer or central server); Carry out record by its application software; High-speed data stored record device recording Transistor-Transistor Logic level signal and electricity, acoustic measurement signal, according to the time interval Δ t between Transistor-Transistor Logic level signal rising edge time corresponding t and the sampled data points, the correct time that calculates n point of electricity, acoustic measurement signal is t+n Δ t; Through the accurate moment that comparison waveform data points correct time and optical pickup photo form, realize the synchronous of each observed quantity of lightning discharge Integrated Observation System.
2. the comprehensive simultaneous observation method of a kind of lightning discharge according to claim 1 is characterized in that, uses wide area lightning location system (1) that the thunderstorm activity trend is provided; Arrive whenever wide area lightning location system (1) prompting thunderstorm is movable, when electric field is higher than setting value near the ground of atmosphere average electric field appearance (3) detection simultaneously, judge whether to satisfy pre-conditioned by data analysis processing server (2); Pre-conditioned when satisfying, promptly the automatic start up system power supply makes all devices energising and gets into preparatory triggering state; After lightning high speed flip flop equipment (5) received the high light that lightning sends, output Transistor-Transistor Logic level signal triggered all observational record equipment and stores all data automatically; Whether the measured value through judging atmosphere average electric field appearance (3) is greater than the threshold value of setting that quits work, if greater than the threshold value of setting that quits work, equipment recovers preparatory triggering state automatically; Wait for that lightning triggers next time; If less than the threshold value of setting that quits work, all devices quits work, and the parting system power supply.
3. the comprehensive simultaneous observation of lightning discharge system; Comprise wide area lightning location system, data analysis processing server, atmosphere average electric field appearance, high speed video camera, lightning high speed flip flop equipment, fast electric field change appearance, slow electric field change appearance, magnetic field measuring apparatus, array thunder sniffer, high-speed data stored record appearance, GPS time service device; It is characterized in that; Described data analysis processing server (2) is connected with wide area lightning location system (1), atmosphere average electric field appearance (3), high speed video camera (4) through the Ethernet netting twine; Described lightning high speed flip flop equipment (5) is connected with high speed video camera (4), high-speed data stored record appearance (10), GPS time service device (11), and output Transistor-Transistor Logic level signal is given institute's connection device behind the high light that the reception lightning discharge sends; Described high-speed data stored record appearance (10) is connected with lightning high speed flip flop equipment (5), fast electric field change appearance (6), slow electric field change appearance (7), magnetic field measuring apparatus (8), array thunder sniffer (9), after receiving the Transistor-Transistor Logic level signal, triggers and write down trigger pip, fast electric field waveform, slow electric field waveform, field waveform, thunder waveform.
4. the comprehensive simultaneous observation of a kind of lightning discharge according to claim 3 system is characterized in that said wide area lightning location system (1) comprises thunder and lightning electromagnetic wave detection station, server and application software thereof, is used to provide thunderstorm activity trend figure.
5. the comprehensive simultaneous observation of a kind of lightning discharge according to claim 3 system; It is characterized in that; Said atmosphere average electric field appearance (3) comprises atmosphere inductor, signal processing circuit, display system, is used to provide thunderstorm to arrive to remind, and the output early warning signal is with the control system power supply.
6. said wide area lightning location system according to claim 3 is characterized in that said fast electric field change appearance (6) comprises metal plate, integrating circuit, treatment circuit, fast electric field change waveform when being used for surveying thunderbolt; Said slow electric field change appearance (7) comprises metal plate, integrating circuit, treatment circuit, slow electric field change waveform when being used for surveying thunderbolt.
7. said wide area lightning location system according to claim 3 is characterized in that said magnetic field measuring apparatus (7) comprises quadrature squaerial, signal processing circuit, is used to survey east-west direction, North and South direction field waveform.
8. said wide area lightning location system according to claim 3 is characterized in that said array thunder sniffer (9) comprises microphone array, signal processing circuit, is used for the thunder signal that detects is converted into the voltage signal that is convenient for measuring.
9. said wide area lightning location system according to claim 3 is characterized in that said high-speed data stored record appearance (10) comprises high-speed data acquisition card, industrial computer, is used to write down all electrical signal.
10. said wide area lightning location system according to claim 3; It is characterized in that; Said GPS time service device (11) comprises that GPS receiver module (11.2), high precision clock module (11.3), IRIG-B clock signal module (11.4), outer triggering signal time beats a yard module (11.5) and I/0 interface (11.6); GPS receiver module (11.2) connects with GPS receiving antenna (11.1); GPS receiver module (11.2) is joined with high precision clock letter module (11.3) and is connected; High precision clock letter module (11.3) connects with IRIG-B clock signal module (11.4) and outer triggering signal time mark module (11.5), and IRIG-B clock signal module (11.4) links to each other with I/0 interface (11.6) respectively with outer triggering signal time mark module (11.5).
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