CN102621414B - 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 lightning physics and Lightning Prevention Technique research field, especially a kind of lightning discharge complex synchronous observation procedure and system.
Background technology
It is the important means of understanding lightning discharge evolution to lightning discharge INTEGRATED SIGHT, the randomness occurred due to nature lightning and instantaneity, require that the scope being used for lightning discharge has higher spatial and temporal resolution, along with the develop rapidly of electronic technology and computer technology, the performance of single scope obtains large development, now how synchronously just to become key issue urgently to be resolved hurrily between each equipment.Applicant is found by test and study, only has the concrete characteristic quantity of physical aspect, electricity, optics and the acoustics realizing the thunder and lightning inscribed when simultaneous observation accurately could obtain each, to reach the object of Obtaining Accurate lightning discharge characteristic parameter.
In order to realize the Synchronization Analysis to measuring the Physics eigenvector such as electricity, optics obtained, common way infers by Physical Mechanism, as supposed, that photograph frame bright corresponding moment forms the moment for fighting back passage to high-speed camera photo entirely, then according to the variation characteristic of electrical characteristic amount " counterattack initial time ", the time relationship of the mutual correspondence between electricity, optical signature parameter is inferred.Applicant thinks, the method exists certain error, is difficult to the musec order precision reaching thunder discharge measurement.
According to the knowledge of the applicant, the inefficiency that the randomness of lightning discharge can cause conventional lightning discharge to be observed, in order to ensure catching random thunder and lightning, way conventional in the industry makes scope be in live line work state for a long time, the result done like this can cause potential safety hazard to produce, also can cause bad consequence, namely scope is in the serviceable life that live line work state will shorten scope greatly for a long time simultaneously.
Summary of the invention
The object of the invention is, for the deficiency that above-mentioned prior art exists, improve, propose and study a kind of lightning discharge complex synchronous observation procedure and system, to realize the high-level efficiency simultaneous observation to lightning discharge process.
Technical solution of the present invention is: a kind of lightning discharge complex synchronous observation procedure, and based on GPS Service of Timing, adopt recording geometry to observe, it is characterized in that, recording geometry adopts lightning discharge complex synchronous recording geometry, and its observation procedure is as follows:
1) lightning discharge complex synchronous recording geometry uses wide area lightning location system to provide thunder activities trend, uses air average electric field instrument to provide thunderstorm to arrive to remind;
2) lightning discharge complex synchronous recording geometry adopts GPS time service device output AC B coded signal to the clock input interface of high speed video camera, the formation time of every photograph frame is indicated at the clock system of high speed video camera inside, GPS time service device receives the Transistor-Transistor Logic level signal from lightning high speed flip flop equipment simultaneously, and export correct time t corresponding to Transistor-Transistor Logic level rising edge to PC (or host computer or central server), record is carried out by its application software, high-speed data processing recording device records Transistor-Transistor Logic level signal and electricity, acoustic measurement signal, time interval Δ t between the time t corresponding according to Transistor-Transistor Logic level signal rising edge and sampled data points, calculate electricity, the correct time of n-th of acoustic measurement signal is t+n Δ t, by the exact time that comparison waveform data points correct time and optical pickup photo are formed, realize the synchronous of each observed quantity of lightning discharge Integrated Observation System.
It is characterized in that, wide area lightning location system is used to provide thunder activities trend, whenever wide area lightning location system prompting thunder activities arrives, when air average electric field instrument detection Near Ground electric field is higher than setting value simultaneously, judged whether to meet pre-conditioned by Data Analysis Services server, pre-conditioned when meeting, i.e. automatic start up system power supply, all devices is energized and enters pre-trigger state, after lightning high speed flip flop equipment receives the high light that lightning sends, export Transistor-Transistor Logic level signal, trigger all observational record equipment and all data of autostore, by judging whether the measured value of air average electric field instrument is greater than the threshold value that quits work of setting, if be greater than the threshold value that quits work of setting, equipment recovers pre-trigger state automatically, wait for that lightning triggers next time, if be less than the threshold value that quits work of setting, all devices quits work, and parting system power supply.
Above-mentioned lightning discharge complex synchronous recording geometry, comprise wide area lightning location system, Data Analysis Services server, air average electric field instrument, high speed video camera, lightning high speed flip flop equipment, fast electric field change instrument, the slow electric field change instrument, magnetic field measuring apparatus, array thunder sniffer, high-speed data processing registering instrument, GPS time service device, it is characterized in that, described Data Analysis Services server via Ethernet netting twine and wide area lightning location system, air average electric field instrument, high speed video camera is connected, described lightning high speed flip flop equipment and high speed video camera, high-speed data processing registering instrument, GPS time service device is connected, Transistor-Transistor Logic level signal is exported to connected device after the high light that reception lightning discharge sends, described high-speed data processing registering instrument is connected with lightning high speed flip flop equipment, fast electric field change instrument, the slow electric field change instrument, magnetic field measuring apparatus, array thunder sniffer, triggers and record trigger pip, fast electric field waveform, slow electric field waveform, field waveform, thunder waveform after receiving Transistor-Transistor Logic level signal.
It is characterized in that, described wide area lightning location system comprises thunder and lightning electromagnetic wave detection station, server and application software thereof, for providing thunder activities trend map.
It is characterized in that, described air average electric field instrument comprises air inductor, signal processing circuit, display system, for providing thunderstorm to arrive to remind, exports early warning signal with control system power supply.
It is characterized in that, described fast electric field change instrument comprises metal plate, integrating circuit, treatment circuit, fast electric field change waveform during for detecting thunderbolt; Described the slow electric field change instrument comprises metal plate, integrating circuit, treatment circuit, the slow electric field change waveform during for detecting thunderbolt.
It is characterized in that, described magnetic field measuring apparatus comprises orthogonal squaerial, signal processing circuit, for detecting east-west direction, North and South direction field waveform.
It is characterized in that, described array thunder sniffer comprises microphone array, signal processing circuit, for the thunder detected signal is converted into the voltage signal be convenient for measuring.
It is characterized in that, described high-speed data processing registering instrument comprises high-speed data acquisition card, industrial computer, for recording all electrical signal.
It is characterized in that, described GPS time service device comprises GPS receiver module, high precision clock module, IRIG-B clock signal module, outer triggering signal time stamp module and I/O interface, GPS receiver module and GPS receiving antenna connect, GPS receiver module and high precision clock believe module accessory, high precision clock letter module and IRIG-B clock signal module and outer triggering signal time mark module interface, IRIG-B clock signal module is connected with I/O interface respectively with outer triggering signal time mark module.
The following advantage that the present invention has and good effect:
1) the present invention utilizes wide area lightning location system thunder activities trend, and atmospheric electric field detector thunderstorm arriving nowcasting warning, starts recording geometry automatically, reduces scope and continues electrification time, improve scope serviceable life.
2) employing of the present invention is based on the synchronization scenario of GPS Service of Timing, can realize high-precise synchronization between each frame high-speed camera photo and electricity, Acoustic observation amount data, be conducive to carrying out the research of lightning discharge physical process further in a deep going way.
3) recording geometry of the present invention adopts the time service of GPS time service device, and observation data and wide area lightning location system monitoring result realize complex synchronous, realize the mutual checking of observed result and the object of assistant analysis.
Accompanying drawing explanation
Fig. 1 lightning discharge complex synchronous of the present invention recording geometry structured flowchart
Fig. 2 lightning discharge complex synchronous of the present invention recording geometry principle of work block diagram
The GPS time service device theory diagram that Fig. 3 lightning discharge complex synchronous of the present invention recording geometry adopts
Embodiment
Below, with specific embodiment, the invention will be further described by reference to the accompanying drawings:
As shown in Figure 1 and Figure 2, a kind of lightning discharge complex synchronous observation procedure that the present invention proposes, adopts lightning discharge complex synchronous recording geometry, realizes the high-level efficiency simultaneous observation to lightning discharge process.Its observation procedure is as follows:
1) lightning discharge complex synchronous recording geometry uses wide area lightning location system 1 to provide thunder activities trend, uses air average electric field instrument 3 to provide thunderstorm to arrive to remind;
2) lightning discharge complex synchronous recording geometry adopts GPS time service device 11 output AC B coded signal to the clock input interface of high speed video camera 4, the formation time of every photograph frame is indicated at the clock system of high speed video camera 4 inside, GPS time service device 11 receives the Transistor-Transistor Logic level signal from lightning high speed flip flop equipment 5 simultaneously, and export correct time t corresponding to Transistor-Transistor Logic level rising edge to PC (or host computer or central server), record is carried out by its application software, high-speed data processing pen recorder adopts high-speed data processing registering instrument 10 to record Transistor-Transistor Logic level signal and electricity, acoustic measurement signal, time interval Δ t between the time t corresponding according to Transistor-Transistor Logic level signal rising edge and sampled data points, calculate electricity, the correct time of n-th of acoustic measurement signal is t+n Δ t, by the exact time that comparison waveform data points correct time and optical pickup photo are formed, realize each observed quantity obtaining observation lightning discharge.
The basic step of method of the present invention in enforcement is used is, when wide area lightning location system 1 points out thunder activities to arrive, when air average electric field instrument 3 detects Near Ground electric field higher than setting value simultaneously, meet pre-conditioned by Data Analysis Services server 2 judgement, automatic start up system power supply, all scopes are energized and enter pre-trigger state, lightning high speed flip flop equipment 5 receives the high light that lightning sends, export Transistor-Transistor Logic level signal, trigger all observational record equipment and all data of autostore, by judging whether air average electric field instrument 3 measured value is greater than setting and quits work threshold value, if be greater than setting to quit work threshold value, equipment recovers pre-trigger state automatically, wait for that lightning triggers next time, if be less than setting to quit work threshold value, all scopes quit work, and deenergization.Realize the automatic Observation to lightning discharge process by above-mentioned steps, reduce the scope live line work time simultaneously, extend its serviceable life.
When carrying out simultaneous observation, when lightning high speed flip flop equipment 5 receives the high light that lightning sends, immediately export Transistor-Transistor Logic level signal.Transistor-Transistor Logic level signal is for triggering high-speed data processing registering instrument 10.Store by triggering high-speed data processing registering instrument 10 and record the fast electric field signal obtained, slow electric field signal, field signal, thunder signal, obtaining the relative time relationship between Transistor-Transistor Logic level signal rising edge and other electrical signal simultaneously; Lightning high speed flip flop equipment 5 exports Transistor-Transistor Logic level to GPS time service device 11 and obtains correct time t corresponding to TTL signal rising edge, output time signal is by PC record, time interval Δ t between the time t corresponding according to Transistor-Transistor Logic level signal rising edge and electricity waveform data points, the correct time that can calculate the n-th data point is t+n Δ t; Lightning high speed flip flop equipment 5 exports Transistor-Transistor Logic level signal and takes storage picture for triggering high speed video camera 4 simultaneously, GPS time service device 11 exports IRIG-B form time signal to high speed video camera 4, and high speed video camera 4 internal clocking system indicates the correct time t that every photograph frame is formed
1, the correct time t formed by comparison waveform data points correct time t+n Δ t and optical pickup photo
1, the every photograph frame of optics can be obtained and form moment and the accurate corresponding relation of waveform data points, while available exact time t search the results such as amplitude of lightning current, polarity and the return stroke times that wide area lightning location system 1 records for assistant analysis; Carry out thunderbolt according to the observation procedure of proposition of the present invention and put observation, really could realize lightning discharge Integrated Observation System high-precise synchronization.
Above-mentioned lightning discharge complex synchronous recording geometry, comprises wide area lightning location system 1, Data Analysis Services server 2, air average electric field instrument 3, high speed video camera 4, lightning high speed flip flop equipment 5, fast electric field change instrument 6, the slow electric field change instrument 7, magnetic field measuring apparatus 8, array thunder sniffer 9, high-speed data processing registering instrument 10, GPS time service device 11 and PC.Lightning discharge complex synchronous recording geometry is equipped with system power supply.Wherein, Data Analysis Services server 2 is connected with wide area lightning location system 1, air average electric field instrument 3, high speed video camera 4 by Ethernet netting twine, lightning high speed flip flop equipment 5 is connected with high speed video camera 4, high-speed data processing registering instrument 10, GPS time service device 11, after the high light that reception lightning discharge sends, export Transistor-Transistor Logic level signal to connected device; High-speed data processing registering instrument 10 is connected with lightning high speed flip flop equipment 5, fast electric field change instrument 6, the slow electric field change instrument 7, magnetic field measuring apparatus 8, array thunder sniffer 9, triggers and record trigger pip, fast electric field waveform, slow electric field waveform, field waveform, thunder waveform after receiving Transistor-Transistor Logic level signal.Wide area lightning location system 1 comprises thunder and lightning electromagnetic wave detection station, server and application software thereof, for providing thunder activities trend map.Air average electric field instrument 3 comprises air inductor, signal processing circuit, display system, for providing thunderstorm to arrive to remind, exports early warning signal with control system power supply.Fast electric field change instrument 6 comprises metal plate, integrating circuit, treatment circuit, fast electric field change waveform during for detecting thunderbolt.The slow electric field change instrument 7 comprises metal plate, integrating circuit, treatment circuit, the slow electric field change waveform during for detecting thunderbolt.Magnetic field measuring apparatus 8 comprises orthogonal squaerial, signal processing circuit, for detecting east-west direction, North and South direction field waveform.Array thunder sniffer 9 comprises microphone array, signal processing circuit, for detection thunder signal is converted into the voltage signal be convenient for measuring.High-speed data processing registering instrument 10 comprises high-speed data acquisition card, industrial computer, for recording all electrical signal.
As shown in Figure 3, GPS time service device 11 comprises GPS receiver module 11.2, high precision clock module 11.3, IRIG-B clock signal module 11.4, outer triggering signal time stamp module 11.5 and I/O interface 11.6, for receiving gps satellite signal and exporting accurate IRIG-B form amplitude modulated time signal, receive Transistor-Transistor Logic level signal and the corresponding temporal information of outputs level signals rising edge.GPS receiver module 11.2 and GPS receiving antenna 11.1 connect, GPS receiving antenna 11.1 receives spatial electromagnetic waveform signal, level pulse signal second is exported by GPS receiver module 11.2 analytic signal, GPS receiver module 112 and high precision clock believe module 11.3 accessory, realized exporting high precision, high stability clock signal by high precision clock module 11.3, 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 signal, and be connected with the interface clock signal of high speed video camera 4 by I/O interface 11.6, outer triggering signal time mark module 11.5 is connected with I/O interface.Outer triggering signal time mark module 11.5 receives outside input Transistor-Transistor Logic level signal, outputs signal mark time signal corresponding to rising edge to PC.
Claims (10)
1. a lightning discharge complex synchronous observation procedure, based on GPS Service of Timing, adopt recording geometry to observe, it is characterized in that, recording geometry adopts lightning discharge complex synchronous recording geometry, and its observation procedure is as follows:
1) lightning discharge complex synchronous recording geometry uses wide area lightning location system (1) to provide thunder activities trend, uses air average electric field instrument to provide thunderstorm to arrive to remind;
2) lightning discharge complex synchronous recording geometry adopts GPS time service device (11) output AC B coded signal to the clock input interface of high speed video camera (4), the formation time of every photograph frame is indicated at the clock system that high speed video camera (4) is inner, GPS time service device (11) receives the Transistor-Transistor Logic level signal from lightning high speed flip flop equipment (5) simultaneously, and export correct time t corresponding to Transistor-Transistor Logic level rising edge to PC or host computer or central server, record is carried out by its application software, high-speed data processing recording device records Transistor-Transistor Logic level signal and electricity, acoustic measurement signal, time interval △ t between the time t corresponding according to Transistor-Transistor Logic level signal rising edge and sampled data points, calculate electricity, the correct time of n-th of acoustic measurement signal is t+n △ t, by the exact time that comparison waveform data points correct time and optical pickup photo are formed, realize the synchronous of each observed quantity of lightning discharge Integrated Observation System.
2. a kind of lightning discharge complex synchronous observation procedure according to claim 1, it is characterized in that, wide area lightning location system (1) is used to provide thunder activities trend, whenever wide area lightning location system (1) prompting thunder activities arrives, when the Near Ground of air average electric field instrument (3) detection simultaneously electric field is higher than setting value, judged whether to meet pre-conditioned by Data Analysis Services server (2), pre-conditioned when meeting, i.e. automatic start up system power supply, all devices is energized and enters pre-trigger state, after lightning high speed flip flop equipment (5) receives the high light that lightning sends, export Transistor-Transistor Logic level signal, trigger all observational record equipment and all data of autostore, by judging whether the measured value of air average electric field instrument (3) is greater than the threshold value that quits work of setting, if be greater than the threshold value that quits work of setting, equipment recovers pre-trigger state automatically, wait for that lightning triggers next time, if be less than the threshold value that quits work of setting, all devices quits work, and parting system power supply.
3. a lightning discharge complex synchronous recording geometry, comprise wide area lightning location system, Data Analysis Services server, air average electric field instrument, high speed video camera, lightning high speed flip flop equipment, fast electric field change instrument, the slow electric field change instrument, magnetic field measuring apparatus, array thunder sniffer, high-speed data processing registering instrument, GPS time service device, it is characterized in that, described Data Analysis Services server (2) is by Ethernet netting twine and wide area lightning location system (1), air average electric field instrument (3), high speed video camera (4) is connected, described lightning high speed flip flop equipment (5) and high speed video camera (4), high-speed data processing registering instrument (10), GPS time service device (11) is connected, Transistor-Transistor Logic level signal is exported to connected device after the high light that reception lightning discharge sends, described high-speed data processing registering instrument (10) is connected with lightning high speed flip flop equipment (5), fast electric field change instrument (6), the slow electric field change instrument (7), magnetic field measuring apparatus (8), array thunder sniffer (9), triggers and record trigger pip, fast electric field waveform, slow electric field waveform, field waveform, thunder waveform after receiving Transistor-Transistor Logic level signal.
4. a kind of lightning discharge complex synchronous recording geometry according to claim 3, is characterized in that, described wide area lightning location system (1) comprises thunder and lightning electromagnetic wave detection station, server and application software thereof, for providing thunder activities trend map.
5. a kind of lightning discharge complex synchronous recording geometry according to claim 3, it is characterized in that, described air average electric field instrument (3) comprises air inductor, signal processing circuit, display system, for providing thunderstorm to arrive to remind, exports early warning signal with control system power supply.
6. a kind of lightning discharge complex synchronous recording geometry according to claim 3, is characterized in that, described fast electric field change instrument (6) comprises metal plate, integrating circuit, treatment circuit, fast electric field change waveform during for detecting thunderbolt; Described the slow electric field change instrument (7) comprises metal plate, integrating circuit, treatment circuit, the slow electric field change waveform during for detecting thunderbolt.
7. a kind of lightning discharge complex synchronous recording geometry according to claim 3, it is characterized in that, described magnetic field measuring apparatus (7) comprises orthogonal squaerial, signal processing circuit, for detecting east-west direction, North and South direction field waveform.
8. a kind of lightning discharge complex synchronous recording geometry according to claim 3, it is characterized in that, described array thunder sniffer (9) comprises microphone array, signal processing circuit, for the thunder detected signal is converted into the voltage signal be convenient for measuring.
9. a kind of lightning discharge complex synchronous recording geometry according to claim 3, is characterized in that, described high-speed data processing registering instrument (10) comprises high-speed data acquisition card, industrial computer, for recording all electrical signal.
10. a kind of lightning discharge complex synchronous recording geometry according to claim 3, it is characterized in that, described GPS time service device (11) comprises GPS receiver module (11.2), high precision clock module (11.3), IRIG-B clock signal module (11.4), outer triggering signal time stamp module (11.5) and I/O interface (11.6), GPS receiver module (11.2) and GPS receiving antenna (11.1) connect, GPS receiver module (11.2) and high precision clock believe module (11.3) accessory, 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) is connected with I/O interface (11.6) respectively with outer triggering signal time mark module (11.5).
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| CN102186008A (en) * | 2011-03-18 | 2011-09-14 | 中国气象科学研究院 | All-in-view lightning event observation system and method |
| CN102306392A (en) * | 2011-05-19 | 2012-01-04 | 北京航空航天大学 | Sound and light sampling and simulating method for thunder and lightning |
| CN102338830A (en) * | 2011-06-13 | 2012-02-01 | 中国气象科学研究院 | Lightning detection and positioning system and method |
| CN102288838A (en) * | 2011-07-21 | 2011-12-21 | 华中科技大学 | VHF frequency-range intracloud lightning detecting and positioning system |
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