CN108020718B - The heavy impulse current point sound source transient-wave of thunder sensor responds scaling method - Google Patents
The heavy impulse current point sound source transient-wave of thunder sensor responds scaling method Download PDFInfo
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Abstract
The present invention relates to lightening detection technical fields, scaling method is responded more particularly to the heavy impulse current point sound source transient-wave of thunder sensor, it include: the response calibration of point sound source transient-wave, heavy impulse current discharge waveform is adjusted, the transient response of thunder sensor different wave electric discharge point sound source is demarcated；Point sound source energy response calibration, adjusts heavy impulse current discharge energy, demarcates to the transient response of thunder sensor different-energy electric discharge point sound source；The response calibration of point sound source range attenuation, adjusts detection range, demarcates to transient response of the thunder sensor under different distance；Point sound source transient response waveform feature parameter is defined, the calibration curve that the characteristic parameter of thunder sensor transient response waveform changes with point sound source discharge waveform, point sound source discharge energy, detection range is obtained.This method propose the heavy impulse current point sound source transient response more characteristic parameters scaling method of thunder sensor, the Quantitative Monitoring for thunder sensor provides foundation.
Description
Technical field
The invention belongs to lightening detection technical field more particularly to the heavy impulse current point sound source transient state waves of thunder sensor
Shape responds scaling method.
Background technique
The physical effects such as the adjoint high current of thunder discharge process, strong electromagnetic radiation, high temperature and shock wave are to mankind's activity
Constitute great security threat.The instantaneity and randomness of lightening activity increase the difficulty of lightning disturbance analysis and lightning protection
Degree.Monitor the indirect signals such as thunder and lighting process adjoint sound, optical, electromagnetic and for lighting location or the direct ginseng of inverting thunder and lightning event
The analysis and assessment of amount, physical process research and lightning stroke incident for zonal lightening activity have vital meaning.
The voice signal that lightening activity generates has the characteristics that detect the biography of thunder and lightning sound not vulnerable to cloud cover compared to optical signalling
Sensor has in lightning physics research and has been widely used.
The thunder signal that lightening activity generates excites punching by the transient state discharge process of heavy impulse current, strong electromagnetic radiation feature
It hits wave and propagates in air medium and formed.So far, thunder and lightning sound monitoring sensor master used in existing research achievement
It to be market standard product, product parameters data only gives test data under Stable State Environment, it is impossible to be used in assessment sensor
Thunder and lightning sound monitor quality.For same impulsive discharge sound source, the transient state acoustic pressure wave parameter of the sensor response of different model
There are larger differences for number.Lack a kind of characteristic parameter definition of transient response waveform for lightning monitoring sound transducer at present
Method, while lacking the scaling method to waveform feature parameter.
Summary of the invention
It is big by the heavy impulse current point sound source Discharge Simulation lightning impulse in laboratory that the object of the present invention is to provide a kind of
The discharge process of electric current, strong electromagnetic radiation, the heavy impulse current point sound source transient-wave response characteristic mark for thunder sensor
Fixed method.
To achieve the above object, the technical solution adopted by the present invention is that: the heavy impulse current point sound source of thunder sensor is temporary
State waveform response scaling method, the scaling method puncture the transient state discharge process of short air gap using heavy impulse current discharge system
To simulate the nature lightning active discharge process of strong electromagnetic radiation, heavy impulse current, the heavy impulse current of calibration thunder sensor
Point sound source transient response amplitude；Carry out mould by adjusting three kinds of discharge waveform, discharge energy and thunder range detection sensor variables
The quasi- movable random nature of thunder discharge, is defined heavy impulse current point sound source transient response waveform feature parameter, is
The transient response characteristic of system ground calibration thunder sensor；The following steps are included:
Step 1, the response calibration of point sound source transient-wave, adjust heavy impulse current discharge waveform, different to thunder sensor
The transient response of waveform electric discharge point sound source is demarcated；
Step 2, point sound source energy response calibration, adjust heavy impulse current discharge energy, to thunder sensor different-energy
The transient response of electric discharge point sound source is demarcated；
Step 3, the response calibration of point sound source range attenuation, adjust detection range, to thunder sensor under different distance
Transient response is demarcated；
Step 4 defines point sound source transient response waveform feature parameter, obtains the feature of thunder sensor transient response waveform
The calibration curve that parameter changes with point sound source discharge waveform, point sound source discharge energy, detection range.
In the heavy impulse current point sound source transient-wave response scaling method of above-mentioned thunder sensor, the step 1
Middle different wave electric discharge point sound source is tri- kinds of standard punchings of 1/20 μ s, 8/20 μ s, 30/80 μ s that dash current discharge system is debugged out
Hit current waveform.
In the heavy impulse current point sound source transient-wave response scaling method of above-mentioned thunder sensor, the step 2
Middle different-energy electric discharge point sound source is that the heavy impulse current of 5~100kA amplitude range discharges.
In the heavy impulse current point sound source transient-wave response scaling method of above-mentioned thunder sensor, the step 3
The distance of middle thunder transducer calibration is 1~20m.
In the heavy impulse current point sound source transient-wave response scaling method of above-mentioned thunder sensor, the step 4
Include:
S1. arrival time is defined: at the time of pulsed sound first appears in acoustic pressure-time graph of thunder sensor record
t0；Thunder sensor transient response waveform arrival time is obtained to the calibration curve of each variable；
S2. peak value is defined: the positive peak maximum p of thunder sensor response acoustic pressure wave1, negative peak maximum value p2；Obtain thunder biography
Calibration curve of the sensor transient response waveform peak to each variable；
S3. negative peak ratio: negative peak maximum value p is defined2With positive peak maximum p1Ratio γ；Thunder sensor transient state is obtained to ring
Waveform negative peak is answered to compare the calibration curve of each variable；
S4. definition is depending in the duration: at the time of pulsed sound anode half-peak reaches 10% positive peak for the first time partly with cathode
Peak absolute value is lower than the time interval T at 10% negative peak moments；S24. thunder sensor transient response waveform view is obtained to continue
Calibration curve of the time to each variable.
Beneficial effects of the present invention: (1) pass through the big electricity of heavy impulse current point sound source discharge process simulation of High-Voltage Experimentation room
The nature lightning discharge process of stream, strong electromagnetic radiation, sound source modeling is close to heavy impulse current lightning discharge process.
(2) the heavy impulse current point sound source transient response waveform of thunder sensor is defined in scaling method, comprehensive
Response wave shape characteristic parameter is tested with the impulsive discharge waveform of sound source, the situation of change of discharge energy, detection range.
(3) scaling method of the present invention has filled up the technology sky that lightning monitoring sound transducer demarcates test under simulated conditions
White, the heavy impulse current point sound source transient response amplitude calibration curve of calibration gained thunder sensor, which monitors thunder and lightning sound, to be had
There is important reference value, the Quantitative Monitoring for thunder sensor provides foundation.
Detailed description of the invention
Fig. 1 is one embodiment of the invention heavy impulse current point sound source transient response amplitude demarcation flow figure；
Fig. 2 is thunder sensor layout schematic diagram in one embodiment of the invention heavy impulse current discharge test；
Fig. 3 is the heavy impulse current point sound source transient response waveform feature parameter of one embodiment of the invention thunder sensor
Definition figure；
Fig. 4 is calibration curve of the one embodiment of the invention thunder sensor transient response amplitude with electric discharge amplitude variation；
Wherein, 1- dash current electric discharge point sound source, 2- straight line arrangement, 3- thunder sensor arrangement point, 4- detection range.
Specific embodiment
Embodiments of the present invention are described in detail with reference to the accompanying drawing.
The principle of the present embodiment is as follows, and nature lightning is that the transient state with heavy impulse current and strong electromagnetic radiation was discharged
Journey.Spatial and temporal distributions, discharge energy and the lightning current waveform feature of lightening activity have certain randomness.Monitoring system is used to be passed
Sensor is to carry out lightning monitoring work to the excellent responding ability of impact heavy-current discharge transient process under strong electromagnetic radiation environment
Make and the important leverage of lightening activity research, the transient response amplitude for demarcating thunder sensor are then to carry out thunder and lightning sound monitoring work
The important prerequisite of work.
The present embodiment simulates strong electromagnetic spoke using the transient state discharge process of heavy impulse current discharge system breakdown short air gap
It penetrates, the nature lightning active discharge process of heavy impulse current, the heavy impulse current point sound source transient state of calibration thunder monitoring sensor
Response amplitude.Three kinds of variables of range detection sensor are monitored by adjusting discharge waveform, discharge energy and thunder to simulate thunder and lightning
The random nature of discharge activities is defined heavy impulse current point sound source transient response waveform feature parameter, system terrestrial reference
Determine the transient response characteristic of thunder monitoring sensor, the monitoring for nature lightning sound provides foundation.
Specific technical solution is as follows:
1, point sound source waveform response is demarcated, and is adjusted heavy impulse current discharge waveform, is put to thunder sensor to different wave
The transient response of electric point sound source is demarcated；
2, point sound source energy response is demarcated, and is adjusted heavy impulse current discharge energy, is put to thunder sensor to different-energy
The transient response of electric point sound source is demarcated；
3, point sound source range attenuation response calibration, adjusts detection range, to transient state of the thunder sensor under different distance
Response is demarcated；
4, point sound source transient response waveform feature parameter defines, and obtains the characteristic parameter of thunder sensor response transient-wave
The calibration curve changed with sound source time domain waveform, point sound source discharge energy, detection range.
One, testing scheme process description is demarcated:
Demarcation flow is shown in that Fig. 1, dash current point of discharge sound source portion go out different impacts using heavy impulse current system debug
Current waveform is to carry out the response calibration of point sound source time domain waveform；Different heavy impulse current system discharge parameter change impacts is set
It is large current discharge energy, to carry out point sound source energy response calibration；Thunder sensor arrangement part adjusts the spy of thunder sensor
Ranging is to carry out range attenuation response calibration.It is repeated under every kind of measurement condition test no less than 5 times, records the big electricity of every Secondary Shocks
Banish the thunder sensor transient response waveform of electric point sound source.Statistical nature parameter value calculates testing mean as a result, drawing thunder
Heavy impulse current point sound source transient response characteristic parameter calibration curve of the sonic transducer under different variables.Respectively obtain thunder biography
Sensor transient response waveform arrival time, thunder sensor transient response waveform peak was to each variable to the calibration curve of each variable
Calibration curve, thunder sensor transient response waveform negative peak compares the calibration curve of each variable, thunder sensor transient response
Waveform view is in the duration to the calibration curve of each variable.
Two, heavy impulse current point sound source illustrates:
The dash current electric discharge point sound source 1 indicated in Fig. 2, is specially obtained using heavy impulse current system debug RL parameter
1/20 μ s, 8/20 μ s, 30/80 μ s, tri- kinds of reference waveforms heavy impulse current discharge sound source；It is arranged by digital experiment platform
Electric discharge amplitude debugs out the heavy impulse current electric discharge amplitude within the scope of 5~100kA.
Three, sensor arrangement illustrates:
The straight line arrangement 2 that dotted line indicates in Fig. 2 demarcates the arrangement of thunder sensor in test experiments for range attenuation response
Example.Thunder sensor can arrange that any point within the above range is tested, such as the sensor arrangement point 3 in Fig. 2,
In test process, pay the utmost attention to be equally spaced apart change sensor arrangement point to facilitate drafting calibration map.Distance
In convergent response calibration, transient response calibration of the thunder sensor under 1~20m range arrangement distance.
Four, point sound source transient response waveform feature parameter explanation is defined:
As shown in Figure 3.
1) arrival time is defined: at the time of pulsed sound first appears in acoustic pressure-time graph of thunder sensor record
t0；Thunder sensor transient response waveform arrival time is obtained to the calibration curve of each variable；
2) peak value: the positive peak maximum p of thunder sensor response acoustic pressure wave is defined1, negative peak maximum value p2；Obtain thunder biography
Calibration curve of the sensor transient response waveform peak to each variable；
3) negative peak ratio: negative peak maximum value p is defined2With positive peak maximum p1Ratio γ；Obtain thunder sensor transient response
Waveform negative peak compares the calibration curve of each variable；
4) definition is depending in the duration: at the time of pulsed sound anode half-peak reaches 10% positive peak for the first time and cathode half-peak
Absolute value is lower than the time interval T at 10% negative peak moments；S24. thunder sensor transient response waveform view is obtained when lasting
Between to the calibration curve of each variable.
Five, illustrating for transient response amplitude calibration curve is drawn
To the transient response waveform various features parameter averaged and standard deviation of retest, data standard difference is less than
1% is considered as valid data.Statistical nature mean parameter obtains transient state of the thunder sensor under different variables as a result, drawing
Response wave shape characteristic parameter calibration curve.Such as Fig. 4, the thunder sensor transient response positive peak that detection range 4 is 3 meters is with detection
The calibration map of distance change.Curve matching formula are as follows: y=0.322x-0.187.
It should be understood that the part that this specification does not elaborate belongs to the prior art.
Although being described in conjunction with the accompanying a specific embodiment of the invention above, those of ordinary skill in the art should
Understand, these are merely examples, various deformation or modification can be made to these embodiments, without departing from original of the invention
Reason and essence.The scope of the present invention is only limited by the claims that follow.
Claims (4)
1. the heavy impulse current point sound source transient-wave of thunder sensor responds scaling method, characterized in that the scaling method
Using heavy impulse current discharge system breakdown short air gap transient state discharge process come simulate strong electromagnetic radiation, heavy impulse current from
Right lightening activity discharge process, demarcates the heavy impulse current point sound source transient response amplitude of thunder sensor；By adjusting electric discharge
Three kinds of waveform, discharge energy and thunder range detection sensor variables simulate the movable random nature of thunder discharge, liquidate
It hits high current point sound source transient response waveform feature parameter to be defined, the transient response for systematically demarcating thunder sensor is special
Property；The following steps are included:
Step 1, the response calibration of point sound source transient-wave, adjust heavy impulse current discharge waveform, to thunder sensor different wave
The transient response of electric discharge point sound source is demarcated；
Step 2, point sound source energy response calibration, adjust heavy impulse current discharge energy, discharge thunder sensor different-energy
The transient response of point sound source is demarcated；
Step 3, the response calibration of point sound source range attenuation, adjust detection range, to transient state of the thunder sensor under different distance
Response is demarcated；
Step 4 defines point sound source transient response waveform feature parameter, obtains the characteristic parameter of thunder sensor transient response waveform
The calibration curve changed with point sound source discharge waveform, point sound source discharge energy, detection range；
The step 4 includes:
S1. arrival time is defined: t at the time of pulsed sound first appears in acoustic pressure-time graph of thunder sensor record0；
To thunder sensor transient response waveform arrival time to the calibration curve of each variable；
S2. peak value is defined: the positive peak maximum p of thunder sensor response acoustic pressure wave1, negative peak maximum value p2；Obtain thunder sensor
Calibration curve of the transient response waveform peak to each variable；
S3. negative peak ratio: negative peak maximum value p is defined2With positive peak maximum p1Ratio γ；Obtain thunder sensor transient response wave
Shape negative peak compares the calibration curve of each variable；
S4. definition is depending in the duration: pulsed sound anode half-peak reaches exhausted with cathode half-peak at the time of 10% positive peak for the first time
It is lower than the time interval T at 10% negative peak moment to values；Thunder sensor transient response waveform view is obtained in the duration to each
The calibration curve of variable.
2. the heavy impulse current point sound source transient-wave of thunder sensor as described in claim 1 responds scaling method, special
Sign is that the electric discharge point sound source of different wave described in step 1 is 1/20 μ s, 8/20 μ s, 30/ that dash current discharge system is debugged out
80 tri- kinds of μ s standard impulse current waveforms.
3. the heavy impulse current point sound source transient-wave of thunder sensor as described in claim 1 responds scaling method, special
Sign is that the electric discharge point sound source of different-energy described in step 2 is that the heavy impulse current of 5~100kA amplitude range discharges.
4. the heavy impulse current point sound source transient-wave of thunder sensor as described in claim 1 responds scaling method, special
Sign is that the distance of thunder transducer calibration is 1~20m in the step 3.
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| WO2016138556A1 (en) * | 2015-03-03 | 2016-09-09 | Openhd Pty Ltd | A system, content editing server, audio recording slave device and content editing interface for distributed live performance scheduled audio recording, cloud-based audio content editing and online content distribution of audio track and associated metadata |
| CN107782445A (en) * | 2017-11-27 | 2018-03-09 | 武汉大学 | Thunder monitors the large air gap discharge sound source transient response amplitude scaling method of sensor |
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- 2017-11-27 CN CN201711207716.9A patent/CN108020718B/en active Active
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| CN1790041A (en) * | 2004-12-16 | 2006-06-21 | 日本Ae帕瓦株式会社 | Method and system for monitoring partial discharge in gas-insulated apparatus |
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| WO2016138556A1 (en) * | 2015-03-03 | 2016-09-09 | Openhd Pty Ltd | A system, content editing server, audio recording slave device and content editing interface for distributed live performance scheduled audio recording, cloud-based audio content editing and online content distribution of audio track and associated metadata |
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