CN104677860B - Rapid aircraft fuel cleanliness detection method - Google Patents
Rapid aircraft fuel cleanliness detection method Download PDFInfo
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- CN104677860B CN104677860B CN201510057140.7A CN201510057140A CN104677860B CN 104677860 B CN104677860 B CN 104677860B CN 201510057140 A CN201510057140 A CN 201510057140A CN 104677860 B CN104677860 B CN 104677860B
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Abstract
The invention discloses a rapid aircraft fuel cleanliness detection method. In a stage of establishing pure aircraft fuel cleanliness scattering data, a first computer acquires brillouin scattering signals of first to eighth reflecting mirrors at different time periods by a first ICCD, draws brillouin scattering signal data generated at different optical paths, and establishes a brillouin scattering signal database of pure aircraft fuel according to the acquired brillouin scattering signal data; at the cleanliness detection stage of the to-be-detected aircraft fuel, the acquired brillouin scattering signal data and the established brillouin scattering signal database of the pure aircraft fuel are compared by a second computer, so that the cleanliness of the to-be-detected aircraft fuel can be obtained. According to the invention, when the aircraft fuel is detected, deep-seated aircraft fuel can be subjected to non-contact detection, so that the complex working procedures and long detection time of the traditional sampling detection are prevented; the rapid aircraft fuel cleanliness detection method is long in timeliness and capable of resisting interference.
Description
Technical field
The present invention relates to a kind of photon detection technology, particularly to Aviation Fuel cleanliness factor method for quick.
Background technology
Aviation Fuel is aircraft " blood ", and the height of " blood " cleannes directly influences the safety of aircraft.According to
USAF counts, and in 33% second grade accident, has 50% accident to be caused by low-quality fuel oil.Eighties of last century seven, eight
The ten's, the moisture contained by oil plant in pipeline and mechanical admixture cause the Ge-La pipeline of Qinghai-Tibet Platean seriously to freeze, and cause serious
Economic loss.However, the detection method overwhelming majority at present oil product being adopted is chemical analysis, and the method device therefor
Complexity, analysis time is long, and workload is big, and aseptic condition is harsh, ageing poor.And, in wartime and urgent training
Under, in order to high-timeliness uses observation method of naked eye, the subjectivity being caused by human factor and individual difference and low accuracy rate
Well imagine, its water content is more difficult to judge.
Content of the invention
The technical problem to be solved is to provide a kind of detection method, using Brillouin scattering as a kind of noncontact
Formula " probe ", so that it is real-time, anti-interference, conveniently advantage, realizes precisely quickly visiting to Aviation Fuel cleanliness factor
Survey.
The present invention employs the following technical solutions and realizes above-mentioned purpose.Aviation Fuel cleanliness factor method for quick, including building
Stand two stages of detection of pure Aviation Fuel cleanliness factor scattering data and Aviation Fuel cleanliness factor to be measured：
Described set up the pure Aviation Fuel cleanliness factor scattering data stage；
First telephoto lens is docked with an ICCD, and an ICCD and first laser device pass through data wire and the first meter respectively
Calculation machine connects；Be loaded with Aviation Fuel glass guide channel pure Aviation Fuel and inwall successively staggered relative equipped with the first speculum,
Second speculum, the 3rd speculum, the 4th speculum, the 5th speculum, the 6th speculum, the 7th speculum and the 8th reflection
Mirror；First laser device be disposed with to Aviation Fuel glass guide channel the first half-wave plate, the first polarizer and the one or four/
One wave plate, and the incident laser of first laser device is coaxial with the first half-wave plate, the first polarizer and the first quarter-wave plate, boat
Air-fuel oil glass guide channel incident laser opposite face is correspondingly arranged on the first speculum, and the side of the first polarizer is provided with the 9th reflection
Mirror；It is disposed with the first slit, the first convex lens, the second slit, second convex between 9th speculum to the first telephoto lens
Lens and a F-P etalon；
Its detection steps is as follows：
1) open the first computer and start first laser device and an ICCD；
2) pure Aviation Fuel is injected in Aviation Fuel glass guide channel by notch；
3) laser injects Aviation Fuel glass through after the first half-wave plate, the first polarizer and the first quarter-wave plate successively
The first speculum in glass groove, through the first speculum be reflected towards successively the second speculum, the 3rd speculum, the 4th speculum,
After five speculums, the 6th speculum, the 7th speculum and the 8th speculum, then the reflection through the 8th speculum, level projects aviation
Fuel oil glass guide channel；
4) the first computer passes through the Brillouin that an ICCD gathers the first speculum to the 8th speculum different time sections
Scattered signal, and draw out the brillouin scattering signal data that different light paths produce；
5) Brillouin scattering of pure Aviation Fuel set up by the first computer according to the brillouin scattering signal data of collection
Signals Data Base；
The detection-phase of described Aviation Fuel cleanliness factor to be measured；
Second telephoto lens is docked with the 2nd ICCD, and the 2nd ICCD and second laser pass through data wire and count with second respectively
Calculation machine connects, and is loaded with Aviation Fuel to be measured, is disposed between second laser to Aviation Fuel tank in Aviation Fuel tank
Second half-wave plate, the second polarizer, the second quarter-wave plate and the tenth speculum；The side of the second polarizer is provided with the 9th
Speculum；Be disposed between 9th speculum to the second telephoto lens the first slit, the first convex lens, the second slit,
Two convex lens and the 2nd F-P etalon；
Its detection steps is as follows：
1) open second computer and start second laser and the 2nd ICCD；
2) laser that second laser sends is successively through the second half-wave plate, the second polarizer, the second quarter-wave plate extremely
Tenth speculum, and by the Aviation Fuel to be measured injected after the tenth speculum reflection in Aviation Fuel tank；
3), when laser transmits in Aviation Fuel to be measured, all backward Brillouin scattering signal can be produced in different depth, and
Return by original optical path and formation flashlight is separated with incident laser to after the reflection of the 9th speculum by the second polarizer, described letter
Number light passes through the first slit, the first convex lens, the second slit, the second convex lens and the 2nd F-P etalon successively, and to enter second long
Zoom lens, finally by the 2nd ICCD spectra re-recorded；Second computer passes through the Brillouin scattering that the 2nd ICCD gathers different time
Signal simultaneously draws out the brillouin scattering signal data that different depth produces；
4) second computer is according in the brillouin scattering signal data of collection and the cloth of the pure Aviation Fuel of foundation
Deep scattered signal database contrast, you can draw the cleanliness factor of Aviation Fuel to be measured.
Further, described first slit seam is wide identical with the beam diameter of flashlight.
Further, the brillouin scattering signal that described different depth produces is frequency shift amount, live width amount and signal to noise ratio.
It is an advantage of the current invention that when carrying out the detection of Aviation Fuel, noncontact can be carried out to the Aviation Fuel of deep layer
Detection, it is to avoid the cumbersome process of traditional sampling detection and tediously long detection time, the method is ageing strong, anti-interference.
Brief description
Fig. 1 be pure Aviation Fuel cleanliness factor scattering data set up schematic device.
Fig. 2 be Aviation Fuel cleanliness factor to be measured detection set up schematic device.
Specific embodiment
Below in conjunction with drawings and Examples, the invention will be further described, referring to Fig. 1 and Fig. 2, Aviation Fuel cleanliness factor
Method for quick, including the detection two setting up pure Aviation Fuel cleanliness factor scattering data and Aviation Fuel cleanliness factor to be measured
Stage：
First stage：Set up pure Aviation Fuel cleanliness factor scattering data, referring to Fig. 1；
First telephoto lens 21 is docked with an ICCD22, and an ICCD22 and first laser device 1 pass through data wire and the
One computer 23 connects.Incident laser and the first half-wave plate 2, the first polarizer 3 and the first quarter-wave plate 4 are coaxial and successively
Through these three optics, laser is injected in Aviation Fuel glass guide channel 5, by the first speculum 7, the second speculum the 8, the 3rd
Speculum 9, the 4th speculum 10, the 5th speculum 11, after the reflection of the 6th speculum 12, the 7th speculum and the 8th speculum
Project Aviation Fuel glass guide channel 5, now the incident laser in pure Aviation Fuel 27 all can produce backward Brillouin scattering letter
Number, these signals are returned by original optical path and are separated with incident laser after the first polarizer 3 and the reflection of the 9th speculum 15, letter
Number convergence through the first convex lens 17 for light transmission the first slit 16 passes through the second slit 18, and the second convex lens 19 are accurate to flashlight again
Directly, enter telephoto lens 21 after the light splitting through a F-P etalon 20 for the flashlight after collimation, finally recorded by an ICCD22
Spectrum.
It is provided with the first speculum 7, the second speculum 8, the 3rd speculum 9, the 4th speculum in Aviation Fuel glass guide channel 5
10th, the 5th speculum 11, the 6th speculum 12, the 7th speculum with the purpose of the 8th speculum are：In order to reduce different depth
The difference of Aviation Fuel cleanliness factor and reduce the size of Aviation Fuel glass guide channel 5, using multigroup speculum in limited sky as far as possible
Interior multiple reflections reach and meet the demand fathoming while increasing light path.
First slit 16 stitches wide identical with the beam diameter of flashlight, thus filtering veiling glare.
By an ICCD22 spectra re-recorded, it focuses on, by adjusting the time gathering, controlling the different light path of collection to produce
Brillouin scattering signal.
Its detection steps is as follows：
1) open the first computer and start first laser device and an ICCD；
2) pure Aviation Fuel 27 is injected by the notch 6 of Aviation Fuel glass guide channel 5；
3) inject Aviation Fuel glass after laser light the first half-wave plate 2, the first polarizer 3 and the first quarter-wave plate 4
In glass groove 5, directive the second speculum 8 after the reflection through the first speculum 7 for the laser, water after the reflection through the second speculum 8 for the laser
To the 3rd speculum 9, directive the 4th speculum 10 after the reflection through the 3rd speculum 9 for the laser, laser is through the 4th speculum for flat fire
Horizontal sheaf the 5th speculum 11 after 10 reflection, directive the 6th speculum 12 after the reflection through the 5th speculum 11 for the laser, swashs
Horizontal sheaf the 7th speculum 13 after the reflection through the 6th reflection 12 for the light, directive the 8th after the reflection through the 7th speculum 13 for the laser
Speculum 14, after the reflection through the 8th speculum 14 for the laser, level projects Aviation Fuel glass guide channel 5；
4) the first computer 23 gathers the brillouin scattering signal of different time by an ICCD 22 and draws out difference
The brillouin scattering signal data that light path produces；
5) Brillouin of pure Aviation Fuel 27 set up by the first computer 23 according to the brillouin scattering signal data of collection
Scattered signal database；
A described ICCD 22 gathers the brillouin scattering signal of different time and draws out in the cloth that different light paths produce
Deep scattered signal data, the brillouin scattering signal of collection different time sections is substantially that the Brillouin that the different light path of collection produces dissipates
Penetrate signal.
The data of described analysis brillouin scattering signal, refer to analyze the frequency shift amount of brillouin scattering signal, live width amount with
Signal to noise ratio.
Second stage：The detection of Aviation Fuel cleanliness factor to be measured, referring to Fig. 2；
Second telephoto lens 21 ' is docked with the 2nd ICCD 22 ', and the 2nd ICCD 22 ' and second laser 1 ' pass through data
Line is connected with second computer 23 ' respectively.Incident laser and the second half-wave plate 2 ', the second polarizer 3 ' and the second quarter-wave
Piece 4 ' is coaxial and passes through these three optics successively, and laser is injected to be measured in Aviation Fuel tank 25 ' through the tenth speculum 24 '
Aviation Fuel 26 ', now in the Aviation Fuel 26 ' to be measured of different depth, incident laser all can produce backward Brillouin scattering letter
Number, these backward Brillouin scattering signals are pressed original optical path and are returned and by after the reflection of the second polarizer 3 ' and the 9th speculum 15 '
Separate with incident laser, flashlight pass through the convergence through the first convex lens 17 ' for first slit 16 ' pass through the second slit 18 ', second
Convex lens 19 ' collimate to flashlight again, and the flashlight after collimation enters the second focal length after the light splitting through the 2nd F-P etalon 20 '
Camera lens 21 ', finally by the 2nd ICCD 22 ' spectra re-recorded.
Its detection steps is as follows：
1) open second computer 23 ' and start second laser 1 ' and the 2nd ICCD 22 '；
2) inject after the reflection through the tenth speculum 24 ' for the laser in the Aviation Fuel 26 ' to be measured in Aviation Fuel tank 25 '；
3) laser, in Aviation Fuel 26 ' to be measured during transmission, all can produce brillouin scattering signal in different depth, and second
Computer 23 ' gathers the brillouin scattering signal of different time by two ICCD 22 ' and draws out the cloth of different depth generation
In deep scattered signal data；
4) second computer 23 ' is according to the brillouin scattering signal data of collection and the pure Aviation Fuel 27 of foundation
Brillouin scattering signal database contrasts, you can draw the cleanliness factor of Aviation Fuel 26 ' to be measured.
The described brillouin scattering signal data drawing out different depth generation and pure Aviation Fuel 27 cleanliness factor scattering
Mention in the foundation of data to draw out the brillouin scattering signal data that different light paths produce corresponding.
Embodiment：Fig. 1 is the schematic diagram setting up device of pure Aviation Fuel 27 cleanliness factor scattering data, to pure boat
Air-fuel oil 27 cleanliness factor scattering datas when setting up it is necessary to consider container in Aviation Fuel cleanliness factor uniformity, little volume
Glass guide channel is to ensure that the conforming key of Aviation Fuel cleanliness factor, but the need of the glass guide channel difficult to reach distance light path of little volume
Will, therefore, when designing Aviation Fuel glass guide channel 5 (two opposite side distances are 2m), for reaching the Brillouin scattering letter of measurement deep layer
Number avoid overlength Aviation Fuel glass guide channel 5 making and using inconvenience when depositing, making laser in boat using polylith speculum again
In air-fuel oil glass guide channel 5 after multiple reflections, laser is made to transmit in limited space with Aviation Fuel glass guide channel 5 with depth
Light path, finally projects from the other end of Aviation Fuel glass guide channel 5.
The present invention adopts the method for scattering spectroscopy to detect that the cleanliness factor of Aviation Fuel will be in advance to pure Aviation Fuel 27
Brillouin scattering spectrum do data reserve, the brillouin scattering signal receiving pure Aviation Fuel 27 different depth is simultaneously analyzed not
With depth produce brillouin scattering signal signal to noise ratio and Brillouin frequency shifts, live width difference.Present invention accomplishes it is right
The demand of Aviation Fuel cleanliness factor detection, is a kind of new method of quick detection Aviation Fuel cleanliness factor.
Claims (3)
1. Aviation Fuel cleanliness factor method for quick, including setting up pure Aviation Fuel cleanliness factor scattering data and aviation to be measured
Two stages of the detection of fuel oil cleanliness factor it is characterised in that
Described set up the pure Aviation Fuel cleanliness factor scattering data stage；
First telephoto lens is docked with an ICCD, and an ICCD and first laser device pass through data wire and the first computer respectively
Connect；Be loaded with Aviation Fuel glass guide channel pure Aviation Fuel and inwall successively staggered relative equipped with the first speculum, second
Speculum, the 3rd speculum, the 4th speculum, the 5th speculum, the 6th speculum, the 7th speculum and the 8th speculum；The
One laser instrument is disposed with the first half-wave plate, the first polarizer and the first quarter-wave to Aviation Fuel glass guide channel
Piece, and the incident laser of first laser device is coaxial with the first half-wave plate, the first polarizer and the first quarter-wave plate, aviation is fired
Oily glass guide channel incident laser opposite face is correspondingly arranged on the first speculum, and the side of the first polarizer is provided with the 9th speculum；
It is disposed with the first slit, the first convex lens, the second slit, the second convex lens between 9th speculum to the first telephoto lens
With a F-P etalon；
Its detection steps is as follows：
1) open the first computer and start first laser device and an ICCD；
2) pure Aviation Fuel is injected in Aviation Fuel glass guide channel by notch；
3) laser injects Aviation Fuel glass guide channel through after the first half-wave plate, the first polarizer and the first quarter-wave plate successively
The first interior speculum, is reflected towards the second speculum, the 3rd speculum, the 4th speculum, the 5th anti-successively through the first speculum
After penetrating mirror, the 6th speculum, the 7th speculum and the 8th speculum, then the reflection through the 8th speculum, level projects Aviation Fuel
Glass guide channel；
4) the first computer passes through the Brillouin scattering that an ICCD gathers the first speculum to the 8th speculum different time sections
Signal, and draw out the brillouin scattering signal data that different light paths produce；
5) brillouin scattering signal of pure Aviation Fuel set up by the first computer according to the brillouin scattering signal data of collection
Database；
The detection-phase of described Aviation Fuel cleanliness factor to be measured；
Second telephoto lens is docked with the 2nd ICCD, the 2nd ICCD and second laser pass through data wire respectively with second computer
Connect, be loaded with Aviation Fuel to be measured in Aviation Fuel tank, between second laser to Aviation Fuel tank, be disposed with second
Half-wave plate, the second polarizer, the second quarter-wave plate and the tenth speculum；The side of the second polarizer is provided with the 9th reflection
Mirror；It is disposed with the first slit, the first convex lens, the second slit, second convex between 9th speculum to the second telephoto lens
Lens and the 2nd F-P etalon；
Its detection steps is as follows：
1) open second computer and start second laser and the 2nd ICCD；
2) laser that second laser sends is successively through the second half-wave plate, the second polarizer, the second quarter-wave plate to the tenth
Speculum, and by the Aviation Fuel to be measured injected after the tenth speculum reflection in Aviation Fuel tank；
3), when laser transmits in Aviation Fuel to be measured, all backward Brillouin scattering signal can be produced in different depth, and by former
Light path returns and is separated formation flashlight with incident laser by the second polarizer to after the reflection of the 9th speculum, described flashlight
Pass through the first slit, the first convex lens, the second slit, the second convex lens and the 2nd F-P etalon successively and enter the second long lens
Head, finally by the 2nd ICCD spectra re-recorded；Second computer passes through the brillouin scattering signal that the 2nd ICCD gathers different time
And draw out the brillouin scattering signal data of different depth generation；
4) second computer is dissipated with the Brillouin of the pure Aviation Fuel of foundation according to the brillouin scattering signal data of collection
Penetrate Signals Data Base contrast, you can draw the cleanliness factor of Aviation Fuel to be measured.
2. Aviation Fuel cleanliness factor method for quick according to claim 1 is it is characterised in that described first slit stitches
Wide identical with the beam diameter of flashlight.
3. Aviation Fuel cleanliness factor method for quick according to claim 1 is it is characterised in that described different depth produces
Raw brillouin scattering signal is frequency shift amount, live width amount and signal to noise ratio.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105758824B (en) * | 2016-02-25 | 2019-04-02 | 南昌航空大学 | Petroleum pollution in ocean detection method based on Brillouin scattering |
| GB2554751A (en) * | 2016-10-10 | 2018-04-11 | Airbus Operations Ltd | Measuring fuel in a fuel tank |
| CN106225861A (en) * | 2016-10-13 | 2016-12-14 | 南京高华科技股份有限公司 | The determinator of a kind of fluid flow and airborne vehicle fuel quantity assay method |
| CN106442414A (en) * | 2016-11-23 | 2017-02-22 | 南昌航空大学 | Device for conducting fast detection on water body petroleum pollutants based on Brillouin-Raman spectra and method thereof |
| CN113279886B (en) * | 2021-06-16 | 2022-11-04 | 哈尔滨工程大学 | Diesel engine high pressure common rail injector cleanliness detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5953120A (en) * | 1996-01-04 | 1999-09-14 | Sandia Corporation | Optical probe |
| US6100975A (en) * | 1996-05-13 | 2000-08-08 | Process Instruments, Inc. | Raman spectroscopy apparatus and method using external cavity laser for continuous chemical analysis of sample streams |
| CN100351624C (en) * | 2005-01-13 | 2007-11-28 | 上海众毅工业控制技术有限公司 | Dissolved gas analyzer of electric power transformer oil based on Raman technology |
| CN201540247U (en) * | 2009-09-17 | 2010-08-04 | 庞政铎 | Detecting sensor for degree of oil pollution of heavy-load gear |
| CN103149158B (en) * | 2013-01-14 | 2016-04-20 | 中国计量学院 | A kind of biprism water quality monitoring optical fiber sensing system |
| CN103528960A (en) * | 2013-10-25 | 2014-01-22 | 吉林省百瑞生科技发展有限公司 | Online monitoring system of sewage by spectral interference method |
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