CN109270028A - A kind of micro- priming system plasma refraction rate temporal evolution test device - Google Patents
A kind of micro- priming system plasma refraction rate temporal evolution test device Download PDFInfo
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- CN109270028A CN109270028A CN201811137482.XA CN201811137482A CN109270028A CN 109270028 A CN109270028 A CN 109270028A CN 201811137482 A CN201811137482 A CN 201811137482A CN 109270028 A CN109270028 A CN 109270028A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/39—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
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Abstract
The invention belongs to micro- priming system parameter measuring technical fields, more particularly to a kind of micro- priming system plasma refraction rate temporal evolution test device.The present invention is by guaranteeing that tetra- road light beam of optical path module Zhong and tetra- road light beam of reference path module Zhong form four pairs of interfering beams, two-beam road equivalent optical path in each pair of interfering beam is identical, equivalent optical path between each pair of interfering beam is unequal, obtain the image containing micro- priming system plasma refraction rate parameter information, program is write in software and solves micro- priming system plasma refraction rate, obtains the temporal evolution rule of micro- priming system plasma refraction rate.
Description
Technical field
The invention belongs to micro- priming system parameter measuring technical fields, more particularly to a kind of micro- priming system plasma
Refractive index temporal evolution test device.
Background technique
Micro- priming system has obtained quick development in recent years, wherein igniter wire priming system, Semiconductor Bridge Initiator and MEMS
The Typical Representative as micro- priming system such as priming system, in the civilian neck such as safe automobile air bag, mining and construction site
Domain is widely used.Electric energy is converted to the plasma that thermal energy is supervened in micro- priming system, and refractive index parameter can be with inverting
The firing energy and its distribution of priming system out.Plasma can reflect igniting from the process generate, multiply, burying in oblivion
The development process of energy, therefore, by accurately measuring the temporal evolution process of micro- priming system plasma refraction rate, reduction is under fire
The transition state of region thermal energy, can contribute to advanced optimize the preparation of energetic material, gunpowder with when firing power
Control, for pushing the development of micro- priming system to have positive effect etc..
Micro- priming system plasma test is higher for the accuracy requirement of measurement result, and needs to realize temporal evolution
The test of rule, existing test method mainly have: High Speed Photography, interferometry, sonde method, spectroscopic methodology, deflection of light method (packet
Include shadowing method and schlieren method) etc..The country is directed to the measuring technique of miniature scale plasma refraction rate, is also disclosed report.But
It is because tiny area plasma refraction rate develops to and buries in oblivion that speed is fast, and the course time is short (about 100ns-200ns), to test
The time response velocity fails requirement of equipment is high, and current some optical test equipments or electric logging equipment are difficult to catch signal, it is difficult to
Measure stable speed signal.Such as the VISAR speed measurement techniques having at present, a company of musec order can only be met
Continuous rate process measurement, acceleration is too fast to will appear striped Loss；Photon Laser Doppler Technique For Measuring Velocity (PDV) is although be able to satisfy
Some nanosecond order tachometric surveys requirement, it is wide but there are speed due to carrying out Fourier transformation process in data processing
Mouth width degree and temporal resolution, there are certain restricting relations for velocity resolution, cannot meet the precision of speed and time simultaneously
Demand cannot obtain the high speed signal curve of signal-to-noise ratio, be limited by temporal resolution, be unable to satisfy micro- priming system of measurement etc. from
The accuracy of daughter can not achieve the temporal evolution test of plasma, can not restore the plasma differentiation of micro- priming system
Process.
Summary of the invention
In view of the drawbacks of the prior art with improved demand, the present invention provides a kind of micro- priming system plasma refraction rates
Temporal evolution test device, by guaranteeing tetra- road light beam of optical path module Zhong and tetra- road light beam group of reference path module Zhong
Cheng Si is to interfering beam, and the two-beam road equivalent optical path in each pair of interfering beam is identical, the equivalent light between each pair of interfering beam
Journey is unequal, obtains the image containing micro- priming system plasma refraction rate parameter information, write in software program solve it is micro-
Priming system plasma refraction rate obtains the temporal evolution rule of micro- priming system plasma refraction rate.
To achieve the purpose of the present invention, the present invention provides a kind of micro- priming system plasma refraction rate temporal evolutions to test
Device, including fiber coupled laser, fibre optic isolater, adjustable light splitting is than y-type optical fiber beam splitter, optical path module, reference
Light path module, 50/50Y type fiber coupler, signal acquisition process module, oscillograph and PC end data processing module；
The monochromatic light that the fiber coupled laser generates passes through fibre optic isolater, by adjustable light splitting than y-type optical fiber beam splitter,
Obtain the unequal laser beam of two beam powers；
Wherein high-power laser is as measuring beam, and into optical path module, the optical path module is by 1 × 4 optical fiber
Beam splitter, optical fiber collimator and erbium-doped fiber amplifier are composed in series, and the measuring beam of entrance is through 1 × 4 fiber optic splitter by one
Shu Guang is divided into four tunnels, respectively enters optical fiber collimator, and fiber optic collimator system carries out arranged distribution according to " rice " font, puts among it
Micro- priming system is set to send after four erbium-doped fiber amplifiers after four bundles light passes through micro- priming system (as plasma generating source)
Input terminal to four 50/50Y type fiber couplers is coupled；
Wherein the laser of low-power is as reference beam, by entering 1 × 4 fiber optic splitter, optical fiber attenuation after fibre optic attenuator
Device and 1 × 4 fiber optic splitter constitute reference path module, and light beam is divided into four tunnels and sent to four 50/ by 1 × 4 fiber optic splitter
The input terminal of 50Y type fiber coupler is coupled；
The tetra- road light beam of optical path module Zhong and tetra- road light beam of reference path module Zhong form four pairs of interfering beams, often
Identical to the two-beam road equivalent optical path in interfering beam, the equivalent optical path between each pair of interfering beam is unequal；
The input terminal of the signal acquisition process module is connected to the output end of the 50/50Y type fiber coupler, signal acquisition
Processing module connects data processing module through oscillograph.
Compared with prior art, the beneficial effects of the present invention are:
1, this method can accurately obtain the parameter information of micro- priming system plasma refractive index temporal evolution, and by showing
Wave device carries out the acquisition and preservation of phase shift image, obtains micro- priming system plasma refraction rate by PC end data processing module
Temporal evolution.
2, measurement cost is low, measurement process is simple, can obtain temporal evolution information, and measurement result accuracy is high and measures
The interference quality of process can be regulated and controled by fibre optic attenuator and erbium-doped fiber amplifier.
3, the present invention uses transmission medium of the optical fiber as laser, it is possible to reduce the interference in measurement process greatly increases
The accuracy of measurement result.By the colimated light system of " rice " font and the optical path of special equivalent light path, so that result is more accurate
The micro- priming system plasma of reaction temporal evolution rule.
4, the present invention uses optical fibre wavelength division multiplexer, cooperates optical fiber extended line, can accurately control multiple-channel output optical signal
Synchronous acquisition, accomplish ns grades of time jitter, improve the time consistency of measurement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of micro- priming system plasma refraction rate temporal evolution test device provided by the invention；
Fig. 2 is the structure of micro- priming system plasma refraction rate temporal evolution test device optical path module provided by the invention
Schematic diagram；
Fig. 3 is the structure of micro- priming system plasma refraction rate temporal evolution test device reference path module provided by the invention
Schematic diagram；
In figure: 1 is fiber coupled laser, and 2 be fibre optic isolater, and 3 be adjustable light splitting than y-type optical fiber beam splitter, and 4 be measurement light
Road module, 5 be reference path module, and 6 be 50/50Y type fiber coupler, and 7 be signal acquisition process module, and 8 be oscillograph, 9
It is 1 × 4 fiber optic splitter for data processing module, 10,11 be micro- priming system, and 12 be optical fiber collimator, and 13 put for Er-doped fiber
Big device, 14 be fibre optic attenuator, and 15 be 1 × 4 fiber optic splitter.
Specific embodiment
It is with reference to the accompanying drawings and embodiments, right in order to which technological means and own characteristic of the invention is more clearly understood
The present invention is described in detail.
As depicted in figs. 1 and 2, micro- priming system plasma refraction rate temporal evolution test device of the invention includes: light
Fine coupled laser 1, fibre optic isolater 2, adjustable light splitting is than y-type optical fiber beam splitter 3, optical path module 4, reference path module
5,50/50Y type fiber couplers 6, signal acquisition process module 7, oscillograph 8, data processing module 9.The optical path mould
Block 4 is composed in series by 1 × 4 fiber optic splitter 10, optical fiber collimator 2 and erbium-doped fiber amplifier 13, wherein optical fiber collimator 12
Arranged distribution composition is carried out according to " rice " font, micro- priming system 11 is placed in centre, as plasma generating source.The reference light
Road module 5 is made of the fiber optic splitter of fibre optic attenuator 14 and 1 × 4 15.
The monochromatic light that fiber coupled laser 1 generates is carried out by echo of the fibre optic isolater 2(fibre optic isolater to system
Isolation, guarantees the stabilization of laser), by adjustable light splitting than y-type optical fiber beam splitter 3, obtain the unequal laser of two beam powers
Beam respectively enters wherein light beam is divided into four tunnels as measuring beam, into 1 × 4 fiber optic splitter 10 by high-power laser
Optical fiber collimator 12, after passing through micro- priming system heating region, by erbium-doped fiber amplifier 13, the wherein laser of low-power
As reference beam, by fibre optic attenuator 14, light beam is divided into four tunnels into 1 × 4 fiber optic splitter 15.Measuring beam and
Equivalent optical path in reference beam, and the equivalent optical path between each pair of measuring beam and reference beam combination is unequal, passes through
50/50Y type fiber coupler 6 is coupled, and interfering beam is obtained, by signal acquisition process module 7, finally in oscillograph 8
It is acquired record, and is handled through PC end data processing module 9, micro- priming system plasma refraction rate temporal evolution is obtained
Rule.
Using 1 × 4 fiber optic splitter 15, cooperates optical fiber extended line, the synchronization of multiple-channel output optical signal can be accurately controlled
Acquisition, accomplishes ns grades of time jitter, improves the time consistency of measurement.
The concrete configuration and application method of micro- priming system plasma refraction rate temporal evolution test device of the present embodiment
It is as follows:
The wavelength of fiber coupled laser 1 can choose 532nm, 632nm, 980nm, 1310nm, 1550nm etc., and the present embodiment is adopted
It is measured with 1550nm wavelength.4 Zhong of optical path module, tetra- road light beam and 5 Zhong of reference path module, tetra- road light beam composition
Four pairs of interfering beams, the two-beam road equivalent optical path in each pair of interfering beam is identical, the equivalent optical path between each pair of interfering beam
It is unequal, the present embodiment by measuring beam equivalent optical path be 2x, 3x, 4x, 5x, corresponding reference beam equivalent optical path be 2x, 3x,
4x,5x.Fibre optic isolater 2 is isolated optical fiber echo using the Faraday effect of magneto-optical crystal.Adjustable light splitting ratio Y type light
Fine beam splitter 3, obtaining optical power size can be conducive to improve interference quality with two light beams of dynamic regulation.1 × 4 fiber beam splitting
Device 10 obtains four drive test amount light of equal-wattage.Optical fiber collimator 12 collectively constitutes colimated light system, so that the light beam of outgoing carries
The plasma refraction rate information that micro- priming system device generates.Erbium-doped fiber amplifier 13 enhances the optical power of measuring beam, drop
The loss that low beam is transmitted in fiber optic collimator system.Fibre optic attenuator 14 weakens the optical power of reference beam, passes through 1 × 4 optical fiber
Reference light is divided into the light beam of four road equal-wattages by beam splitter 15, makes the light beam optical power for reaching 50/50Y type fiber coupler 6
It is identical.Signal acquisition process module 7 carries out photoelectric conversion processing to interference light signal, moves variation in 8 acquisition phase of oscillograph
Curve.Data processing module 9 in the end PC resolves phase shift curve on the basis of professional software, obtains micro- priming system plasma
Body refractive index temporal evolution rule.
Claims (1)
1. a kind of micro- priming system plasma refraction rate temporal evolution test device, including fiber coupled laser (1), optical fiber every
From device (2), adjustable light splitting is than y-type optical fiber beam splitter (3), optical path module (4), reference path module (5), 50/50Y type light
Fine coupler (6), signal acquisition process module (7), oscillograph (8) and PC end data processing module (9)；
The monochromatic light that the fiber coupled laser (1) generates passes through fibre optic isolater (2), compares y-type optical fiber by adjustable light splitting
Beam splitter (3) obtains the unequal laser beam of two beam powers；
Wherein high-power laser is as measuring beam, into optical path module (4), the optical path module (4) by 1 ×
4 fiber optic splitters (10), optical fiber collimator (12) and erbium-doped fiber amplifier (13) are composed in series, and the measuring beam of entrance is through 1
Light beam is divided into four tunnels by × 4 fiber optic splitters (10), is respectively enterd optical fiber collimator (12), fiber optic collimator system (12) according to
" rice " font carries out arranged distribution, places micro- priming system among it, and four bundles light passes through micro- priming system and (generates as plasma
Source) after, send the input terminal to four 50/50Y type fiber couplers (10) to carry out coupling after four erbium-doped fiber amplifiers (13)
It closes；
Wherein the laser of low-power enters 1 × 4 fiber optic splitter (15) afterwards by fibre optic attenuator (14) as reference beam,
Fibre optic attenuator (14) and 1 × 4 fiber optic splitter (15) constitute reference path module (5), and 1 × 4 fiber optic splitter (15) is by one
Shu Guang is divided into four tunnels and the input terminal to four 50/50Y type fiber couplers (6) is sent to be coupled；
The tetra- road light beam of optical path module (4) Zhong and tetra- road light beam of reference path module (5) Zhong form four pairs of interference
Light beam, the two-beam road equivalent optical path in each pair of interfering beam is identical, and the equivalent optical path between each pair of interfering beam is unequal；
The input terminal of the signal acquisition process module (7) is connected to the output end of the 50/50Y type fiber coupler (6), letter
Number acquisition processing module (7) connects data processing module (9) through oscillograph (9).
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| CN201811137482.XA CN109270028A (en) | 2018-09-28 | 2018-09-28 | A kind of micro- priming system plasma refraction rate temporal evolution test device |
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| CN201811137482.XA CN109270028A (en) | 2018-09-28 | 2018-09-28 | A kind of micro- priming system plasma refraction rate temporal evolution test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870453A (en) * | 2019-03-08 | 2019-06-11 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of measuring device and system |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1811385A (en) * | 2006-02-14 | 2006-08-02 | 南京中地仪器有限公司 | Laser induced plasma spectral analysis method and spectroanalysis instrument |
| CN102252344A (en) * | 2011-04-29 | 2011-11-23 | 安徽工业大学 | Novel ignition temperature measuring device for experiment |
| JP4925139B2 (en) * | 2008-10-31 | 2012-04-25 | 大学共同利用機関法人自然科学研究機構 | Dispersion interferometer and method for measuring physical quantity of object to be measured |
| CN102621103A (en) * | 2012-03-09 | 2012-08-01 | 中国科学院长春光学精密机械与物理研究所 | Reflectivity tester for laser exploder |
| KR20130078198A (en) * | 2011-12-30 | 2013-07-10 | 한국원자력연구원 | Multiple interference device using time resolution |
| CN104185353A (en) * | 2014-09-05 | 2014-12-03 | 中国人民解放军陆军军官学院 | Fusion reactor plasma density and temperature diagnosing method based on Thomson scattering weak coherent technique |
| CN204855301U (en) * | 2015-04-10 | 2015-12-09 | 北京师范大学 | A interferometer for plasma measurement of density |
| CN105651742A (en) * | 2016-01-11 | 2016-06-08 | 北京理工大学 | Laser-induced breakdown spectroscopy based explosive real-time remote detection method |
| CN105744711A (en) * | 2016-04-15 | 2016-07-06 | 中国人民解放军装甲兵工程学院 | Thermal ionization plasma generation test device and density test and control methods |
| CN105744712A (en) * | 2016-04-15 | 2016-07-06 | 中国人民解放军装甲兵工程学院 | Closed bomb vessel for plasma diagnosis and density control method thereof |
| CN107205306A (en) * | 2017-05-26 | 2017-09-26 | 中国工程物理研究院流体物理研究所 | Optical-fiber laser interference electron density measurement system and method based on mathematics method of comparison |
| CN108287126A (en) * | 2018-03-23 | 2018-07-17 | 中国计量科学研究院 | Nano particle diameter measuring system |
-
2018
- 2018-09-28 CN CN201811137482.XA patent/CN109270028A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1811385A (en) * | 2006-02-14 | 2006-08-02 | 南京中地仪器有限公司 | Laser induced plasma spectral analysis method and spectroanalysis instrument |
| JP4925139B2 (en) * | 2008-10-31 | 2012-04-25 | 大学共同利用機関法人自然科学研究機構 | Dispersion interferometer and method for measuring physical quantity of object to be measured |
| CN102252344A (en) * | 2011-04-29 | 2011-11-23 | 安徽工业大学 | Novel ignition temperature measuring device for experiment |
| KR20130078198A (en) * | 2011-12-30 | 2013-07-10 | 한국원자력연구원 | Multiple interference device using time resolution |
| CN102621103A (en) * | 2012-03-09 | 2012-08-01 | 中国科学院长春光学精密机械与物理研究所 | Reflectivity tester for laser exploder |
| CN104185353A (en) * | 2014-09-05 | 2014-12-03 | 中国人民解放军陆军军官学院 | Fusion reactor plasma density and temperature diagnosing method based on Thomson scattering weak coherent technique |
| CN204855301U (en) * | 2015-04-10 | 2015-12-09 | 北京师范大学 | A interferometer for plasma measurement of density |
| CN105651742A (en) * | 2016-01-11 | 2016-06-08 | 北京理工大学 | Laser-induced breakdown spectroscopy based explosive real-time remote detection method |
| CN105744711A (en) * | 2016-04-15 | 2016-07-06 | 中国人民解放军装甲兵工程学院 | Thermal ionization plasma generation test device and density test and control methods |
| CN105744712A (en) * | 2016-04-15 | 2016-07-06 | 中国人民解放军装甲兵工程学院 | Closed bomb vessel for plasma diagnosis and density control method thereof |
| CN107205306A (en) * | 2017-05-26 | 2017-09-26 | 中国工程物理研究院流体物理研究所 | Optical-fiber laser interference electron density measurement system and method based on mathematics method of comparison |
| CN108287126A (en) * | 2018-03-23 | 2018-07-17 | 中国计量科学研究院 | Nano particle diameter measuring system |
Non-Patent Citations (2)
| Title |
|---|
| 李兴文 等: "激光诱导等离子体光学诊断方法研究综述", 《高电压技术》 * |
| 雷岚 等: "有限宽全息干涉技术对等离子体电子密度的诊断", 《中国激光》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870453A (en) * | 2019-03-08 | 2019-06-11 | 中国空气动力研究与发展中心高速空气动力研究所 | A kind of measuring device and system |
| CN109870453B (en) * | 2019-03-08 | 2024-03-01 | 中国空气动力研究与发展中心高速空气动力研究所 | Measuring device and system |
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