CN109342362A - A kind of micro- priming system plasma refraction rate distributed in three dimensions test device - Google Patents
A kind of micro- priming system plasma refraction rate distributed in three dimensions test device Download PDFInfo
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- CN109342362A CN109342362A CN201811137937.8A CN201811137937A CN109342362A CN 109342362 A CN109342362 A CN 109342362A CN 201811137937 A CN201811137937 A CN 201811137937A CN 109342362 A CN109342362 A CN 109342362A
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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 distributed in three dimensions test device.It can not accurately measure to obtain the parameter of micro- priming system plasma for of the existing technology, can not achieve the distributed in three dimensions test of plasma refraction rate, the problem of whether spark generated after micro- priming system is powered meets igniting demand can not be learnt.The monochromatic light that fiber coupled laser of the present invention generates obtains the unequal laser beam of two beam powers by adjustable light splitting than y-type optical fiber beam splitter by fibre optic isolater；Two-beam passes through the fiber optic collimator system of " rice " font respectively and beam splitter is coupled, and the input terminal of entering signal acquisition processing module is connected to the output end of the 50/50Y type fiber coupler, and signal acquisition process module connects data processing module through oscillograph.
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 distributed in three dimensions 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.Therefore, by accurately measuring micro- priming system plasma refraction rate three-dimensional point
Cloth can contribute to advanced optimize bridge zone structure, bridge area material and manufacture craft etc..
In order to accurately judge the ignition quality of micro- priming system, other than requiring to obtain maximum firing energy, researcher
It is also desirable that showing entire ignition Regional land surface heat fluxes state, it is therefore desirable to real to carry out three to micro- priming system plasma refraction rate
Tie up the test of distribution, existing test method has: High Speed Photography, interferometry, sonde method, spectroscopic methodology, deflection of light method (including
Shadowing method and schlieren method) etc..Prefered method of the interferometry as non-contact testing, wherein the experiment porch of conventional interference method is built
Complicated and uncontrollable, the cost expenses of test are high, are confined to collect the quality of interference image during image procossing,
The adjustment of system, comparable trouble will be carried out after experiment every time, and not can control the quality of interference pattern, test result
Accuracy not can guarantee.Other measurement methods have the limitation of its own, can not accurately measure to obtain micro- priming system plasma
The parameter of body can not achieve the distributed in three dimensions test of plasma, can not learn whether is the spark that generates after micro- priming system is powered
Meet igniting demand.
Summary of the invention
Can not accurately measure to obtain the parameter of micro- priming system plasma for of the existing technology, can not achieve etc. from
The distributed in three dimensions of daughter refractive index is tested, and can not learn whether the spark generated after micro- priming system is powered meets asking for igniting demand
Topic, the present invention provides a kind of micro- priming system plasma refraction rate distributed in three dimensions test devices.
In order to reach mesh of the invention, the present invention provides a kind of micro- priming system plasma refraction rate distributed in three dimensions to test
Device, including fiber coupled laser, fibre optic isolater, adjustable light splitting is than y-type optical fiber beam splitter, 1 × 4 fiber optic splitter, light
Fine colimated light system, optical fiber collimator, erbium-doped fiber amplifier, fibre optic attenuator, 1 × 4 fiber optic splitter, 50/50Y type optical fiber coupling
Clutch, signal acquisition process module, oscillograph and PC end data processing module, the monochromatic light that the fiber coupled laser generates
The unequal laser beam of two beam powers, low-power are obtained by adjustable light splitting than y-type optical fiber beam splitter by fibre optic isolater
Laser as reference beam, the equivalent optical path that the reference beam and measuring beam form eight road light beams is all equal；
Wherein light beam is divided into four tunnels into 1 × 4 fiber optic splitter, respectively enterd by high-power laser as measuring beam
Fiber optic collimator system, fiber optic collimator system carry out arranged distribution according to " rice " font, place micro- priming system among it, four bundles light is worn
After crossing micro- priming system (as plasma generating source), four erbium-doped fiber amplifiers are respectively fed to, are transmitted to four 50/50Y
The input terminal of type fiber coupler is coupled；
Wherein the laser of low-power is as reference beam, by entering 1 × 4 fiber optic splitter, light beam point after fibre optic attenuator
Cheng Silu send the input terminal to four 50/50Y type fiber couplers to be coupled；
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, advantages of the present invention is as follows:
The present invention uses carrier of the optical fiber as laser, can greatly increase the accuracy of measurement result, avoids each experiment
Adjustment system passes through the equal limit of the equivalent optical path of the fiber optic collimator system of " rice " font and all measuring beams and reference beam
Condition processed, so that result has accurately reacted the distributed in three dimensions of micro- priming system plasma.The test method can be obtained accurately
The distributed in three dimensions of micro- priming system plasma.Have the characteristics that measurement cost is low, measurement process is simple, accuracy of measurement is high, and
And the interference quality of light can be regulated and controled by fibre optic attenuator and erbium-doped fiber amplifier in measurement process.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of micro- priming system plasma refraction rate distributed in three dimensions test device provided by the invention；
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 1 × 4 light
Fine beam splitter, 5 be fiber optic collimator system, and 6 be optical fiber collimator, and 7 be erbium-doped fiber amplifier, and 8 be fibre optic attenuator, 9 for 1 ×
4 fiber optic splitters, 10 be 50/50Y type fiber coupler, and 11 be signal acquisition process module, and 12 be oscillograph, and 13 be the end PC number
According to processing module.
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.
Design philosophy of the invention is:, measurement equal by the equivalent optical path for limiting all measuring beams and reference beam
Light beam passes through the fiber optic collimator system of " rice " font, obtains the image containing micro- priming system plasma parameter information, obtain etc.
The refractive index distributed in three dimensions of gas ions.
As shown in Figure 1, a kind of micro- priming system plasma refraction rate distributed in three dimensions test device, including optical fiber-coupled laser
Device 1, fibre optic isolater 2, adjustable light splitting is than 3,1 × 4 fiber optic splitter 4 of y-type optical fiber beam splitter, fiber optic collimator system 5, optical fiber standard
Straight device 6, erbium-doped fiber amplifier 7,8,1 × 4 fiber optic splitter 9 of fibre optic attenuator, 50/50Y type fiber coupler 10, signal is adopted
Collect processing module 11, oscillograph 12 and PC end data processing module 13, the reference beam and measuring beam form eight road light beams
Equivalent optical path it is all equal；
The monochromatic light that the fiber coupled laser 1 generates passes through fibre optic isolater 2, by adjustable light splitting than y-type optical fiber beam splitting
Device 3 obtains the unequal laser beam of two beam powers；The echo of system is isolated in fibre optic isolater 2, guarantees the steady of laser
It is fixed.
Wherein light beam is divided into four tunnels into 1 × 4 fiber optic splitter 4 as measuring beam by high-power laser, respectively
Into fiber optic collimator system 5, fiber optic collimator system 5 carries out arranged distribution according to " rice " font, places micro- priming system among it, and four
After Shu Guang passes through micro- priming system (as plasma generating source), four erbium-doped fiber amplifiers 7 are respectively fed to, are transmitted to four
The input terminal of 50/50Y type fiber coupler 10 is coupled；
Wherein the laser of low-power is as reference beam, by entering 1 × 4 fiber optic splitter 9, light beam after fibre optic attenuator 8
Being divided into four tunnels send the input terminal to four 50/50Y type fiber couplers 10 to be coupled；
The input terminal of the signal acquisition process module 11 is connected to the output end of the 50/50Y type fiber coupler 10, signal
Acquisition processing module 11 connects data processing module 13 through oscillograph 12.
Below by specific working principle, apparatus of the present invention are described in detail: described optical fiber in the present invention
The wavelength model of coupled laser 1 can be determined according to micro- priming system plasma density order of magnitude, the most commonly used is
1550nm laser.The light of optical fiber echo reflection is isolated in described fibre optic isolater 2, guarantees the stabilization of laser, not by
Echo influences.Adjustable y-type optical fiber beam splitter 3 adjust the optical power size of measuring beam and reference beam after beam splitting can dynamically
Control improves interference quality.Light beam is divided into four tunnels by 1 × 4 fiber optic splitter 4, obtains the measurement light of equal-wattage.Optical fiber is quasi-
Direct line system 5 carries out arranged distribution according to " rice " font, is made of four groups of optical fiber collimators 6, guarantees to contain micro- priming system plasma
The light beam of body three-dimensional information can be acquired completely, finally make across light beam carry micro- priming system plasma refraction rate
Three-dimensional information.Erbium-doped fiber amplifier 7, enhancing measure the optical power in light, reduce the damage that light beam is transmitted in fiber optic collimator system
Consumption.Fibre optic attenuator 8 is finely adjusted the optical power in optical fiber, weakens the optical power in reference light, guarantees measuring beam and ginseng
The optical power for examining light beam is identical, improves interference quality, reference light is divided into optical power identical four by 1 × 4 fiber optic splitter 9
Road light beam guarantees all measuring beams and ginseng so that the optical power for reaching two optical paths of 50/50Y type fiber coupler 10 is identical
The equivalent optical path for examining light beam is equal.50/50Y type fiber coupler 10 carries out coupling to the light beam of two beam equal-wattages in optical fiber
It closes, obtains interference light.Signal acquisition process module 11 carries out the separation and Extraction of interference signal, and oscillograph 12 obtains the small fire extracted
Work product plasma parameter information, that is, to interference light signal carry out photoelectric conversion processing and oscillograph 12 carry out display and
It saves, the variation diagram of phase shift is finally resolved by the data processing module 13 in the end PC, obtains micro- priming system plasma refraction
Rate distributed in three dimensions.
Claims (1)
1. a kind of micro- priming system plasma refraction rate distributed in three dimensions 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), 1 × 4 fiber optic splitter (4), fiber optic collimator system (5), fiber optic collimator
Device (6), erbium-doped fiber amplifier (7), fibre optic attenuator (8), 1 × 4 fiber optic splitter (9), 50/50Y type fiber coupler
(10), signal acquisition process module (11), oscillograph (12) and PC end data processing module (13)；The fiber coupled laser
(1) monochromatic light generated obtains two beam powers by adjustable light splitting than y-type optical fiber beam splitter (3) by fibre optic isolater (2)
Unequal laser beam；The laser of low-power forms eight road light beams as reference beam, the reference beam and measuring beam
Equivalent optical path is all equal；
Wherein light beam is divided into four tunnels into 1 × 4 fiber optic splitter (4) as measuring beam by high-power laser, respectively into
Entering fiber optic collimator system (5), fiber optic collimator system (5) carries out arranged distribution according to " rice " font, micro- priming system is placed among it,
After four bundles light passes through micro- priming system (as plasma generating source), four erbium-doped fiber amplifiers (7) are respectively fed to, are transmitted to
The input terminal of four 50/50Y type fiber couplers (10) is coupled；
Wherein the laser of low-power enters 1 × 4 fiber optic splitter (9) afterwards by fibre optic attenuator (8) as reference beam, and one
Shu Guang is divided into four tunnels and the input terminal to four 50/50Y type fiber couplers (10) is sent to be coupled；
The input terminal of the signal acquisition process module (11) is connected to the output end of the 50/50Y type fiber coupler (10),
Signal acquisition process module (11) connects data processing module (13) through oscillograph (12).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110319940A (en) * | 2019-08-08 | 2019-10-11 | 中国科学技术大学 | The laser fiber interferometer diagnostic system of high-density plasma density measure |
| CN111551071A (en) * | 2020-04-30 | 2020-08-18 | 西安工业大学 | Testing device and three-dimensional reconstruction method for detonation temperature field of micro-explosive device |
| CN112198124A (en) * | 2019-11-15 | 2021-01-08 | 北京微芯区块链与边缘计算研究院 | Optical probe of optical fiber type full spectrum water quality sensor |
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| CN111551071A (en) * | 2020-04-30 | 2020-08-18 | 西安工业大学 | Testing device and three-dimensional reconstruction method for detonation temperature field of micro-explosive device |
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