CN110095246A - Shooting system for shooting flow field structure in wind tunnel test and test system - Google Patents
Shooting system for shooting flow field structure in wind tunnel test and test system Download PDFInfo
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- CN110095246A CN110095246A CN201910480461.6A CN201910480461A CN110095246A CN 110095246 A CN110095246 A CN 110095246A CN 201910480461 A CN201910480461 A CN 201910480461A CN 110095246 A CN110095246 A CN 110095246A
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- flow field
- shooting
- laser
- field structure
- wind tunnel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C11/00—Photogrammetry or videogrammetry, e.g. stereogrammetry; Photographic surveying
- G01C11/02—Picture taking arrangements specially adapted for photogrammetry or photographic surveying, e.g. controlling overlapping of pictures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
Abstract
The invention provides a shooting system and a test system for shooting a flow field structure in a wind tunnel test, which comprises a multi-cavity laser and a shooting device, wherein the multi-cavity laser is used for outputting laser pulses to a wind tunnel test section to illuminate a flow field in the wind tunnel test section and enabling tracing particles in the flow field to emit scattered light, the shooting device is used for utilizing the scattered light to expose and image to shoot the flow field structure, the multi-cavity laser comprises a plurality of double-cavity lasers, the double-cavity lasers output laser pulses with different wavelengths respectively, the shooting device comprises a plurality of cross-frame cameras, the cross-frame cameras and the double-cavity lasers are arranged in a one-to-one correspondence mode, the input end of each cross-frame camera is provided with a filtering component used for passing light with specific wavelengths, the wavelengths of the light which can pass through the filtering component are the same as the wavelengths of the laser pulses output by the corresponding double-cavity lasers, and the shooting system further comprises a plurality of cross-frame cameras which are connected with the double-cavity lasers and and a synchronous controller for the sequence.
Description
Technical field
The present invention relates to wind-tunnel technique fields, particularly, are related to a kind of for shooting flow field structure in wind tunnel test
Camera system.Moreover, it relates to a kind of pilot system including above-mentioned camera system.
Background technique
Supersonic speed, the flow field structure of hypersonic wind tunnel are complicated, and the characteristic time is short, and acutely, unsteady characteristic is significant for pulsation.
The flow field structure of supersonic speed, hypersonic wind tunnel is measured, needs to shoot the figure of multiple flow field structures during the test
Picture, and the time interval of these images is required to guarantee to capture the evolution properties of flow field structure at any time, i.e. adjacent image
Time interval need with characteristic time (hundred nanosecond orders) of flow field structure in same magnitude.
Frame straddling cameras can twice, can be between shooting time in very short time interval (hundred nanosecond orders) interior continuous exposure
Two images of hundred nanosecond orders are divided into, and the resolution ratio of image can achieve 2k*2k or more.But by frame straddling cameras
Hardware performance limitation, at present the time for exposure of the second frame image of frame straddling cameras be millisecond magnitude.If directly will be multiple
Frame straddling cameras is in parallel, issues control signal by isochronous controller, (delay is intrinsic parameter, can after certain delay
To be obtained by measurement), make laser output laser pulse, frame straddling cameras is made to be exposed imaging.
As shown in Figure 1, t indicates the delay, a indicates that isochronous controller issues the timing of control signal, and b indicates that laser is defeated
The timing of laser pulse out, c indicate the timing of frame straddling cameras exposure image.Due to the time interval of laser output laser pulse
For hundred nanosecond orders, much smaller than the time for exposure of the second frame image of frame straddling cameras.When laser exports third laser pulse
When, the second frame image of first frame straddling cameras is still exposing.The second frame image of first frame straddling cameras is resulted in this way
Have multiple laser pulses during exposure, lead to the second frame image overexposure of first frame straddling cameras and be not available, similarly remaining
Second frame image of frame straddling cameras is not available yet.
Summary of the invention
The present invention provides a kind of for shooting the camera system and pilot system of flow field structure in wind tunnel test, to solve
Second frame image overexposure of frame straddling cameras in wind tunnel test and the problem of be not available.
The technical solution adopted by the invention is as follows:
One aspect of the present invention provide it is a kind of in wind tunnel test shoot flow field structure camera system, including for
Output laser pulse is in test chamber to illuminate the flow field in test chamber and the trace particle in flow field is made to issue scattering
The multi-cavity laser of light and for shooting the filming apparatus of flow field structure using scattering light exposure image, multi-cavity laser includes
Multiple dual-cavity lasers, multiple dual-cavity lasers export the laser pulse of different wave length respectively, and filming apparatus includes multiple across frame
Camera, frame straddling cameras are arranged in a one-to-one correspondence with dual-cavity laser, and the input terminal of each frame straddling cameras is equipped with for by specific
The filtering assembly of the light of wavelength, the laser pulse that the wavelength for the light that filtering assembly can pass through is exported with corresponding dual-cavity laser
Wavelength it is identical, camera system further includes connecting respectively with multiple dual-cavity lasers and multiple frame straddling cameras and being used to control respectively
The isochronous controller of the exposure time series of the pulse sequence and frame straddling cameras of dual-cavity laser.
Further, the output end of dual-cavity laser is equipped with the laser pulse for exporting to dual-cavity laser and carries out frequency multiplication
Tread assembly is closed with the frequency multiplication for closing beam.
Further, it includes the output end of dual-cavity laser being arranged in and for defeated to dual-cavity laser that frequency multiplication, which closes tread assembly,
Laser pulse out carries out the frequency-doubling crystal of frequency multiplication and the output end of frequency-doubling crystal is arranged in and for exporting to frequency-doubling crystal
Laser pulse close the combined beam light road of beam.
Further, the output end on combined beam light road is equipped with the piece that shaping is carried out for the laser pulse of pairing beam optical path output
Optical assembly.
Further, filming apparatus further includes the input terminal of filtering assembly being arranged in and for light to be dispersed to filtering assembly
Spectrum groupware and the input terminal of spectrum groupware is set and for assembling light to the camera lens of spectrum groupware.
Further, spectrum groupware includes the output end that camera lens is arranged in and the light splitting rib for light to be separated into multi-beam
It bores and is arranged between the output end and the input terminal of filtering assembly of light splitting pyramid and for multi-beam to be reflexed to corresponding filter
The reflecting mirror of optical assembly.
Another aspect of the present invention provides a kind of pilot system for shooting flow field structure in wind tunnel test, including is used for
It is flowed for air-flow and to form the test chamber in flow field, be connected to and be used for defeated into test chamber with the input terminal of test chamber
Enter the trace particle input unit of trace particle and the camera system for shooting the flow field structure in test chamber, shoots
System is using above-mentioned for shooting the camera system of flow field structure in wind tunnel test.
Further, trace particle input unit include for output gas gas cylinder and respectively with the output end of gas cylinder
Trace particle is connected to and be used to generate with the input terminal of test chamber and makes trace particle that gas be followed to flow to wind tunnel test
Particle generator in section.
Further, window is offered on test chamber, the multi-cavity laser of camera system is equipped with for extending to
At window and alignment windows light-conducting arm from output laser pulse to test chamber, the camera lens pair of the filming apparatus of camera system
Quasi- window.
Further, pilot system further includes connecting and being used for the filming apparatus of camera system and isochronous controller respectively
Acquire the image of filming apparatus shooting and the computer of control isochronous controller work.
The invention has the following advantages:
Camera system for shooting flow field structure in wind tunnel test of the invention, including multi-cavity laser, filming apparatus
And isochronous controller.Multi-cavity laser includes multiple dual-cavity lasers, and there are two for exporting laser for dual-cavity laser tool
Cavity can continuously export two laser pulses with very short time interval (hundred nanosecond orders).It is controlled by isochronous controller
The pulse sequence (sequencings and time interval of i.e. multiple dual-cavity laser output laser pulses) of dual-cavity laser, can make
Multi-cavity laser continuously exports multiple laser pulses with very short time interval (hundred nanosecond orders), and the quantity of laser pulse with
The quantity of the cavity of multi-cavity laser is identical.Since the wavelength of the laser pulse of each dual-cavity laser output is different, different waves
Flow field in long laser pulse illumination test chamber, the trace particle in flow field will issue the scattering light of different wave length.It claps
Taking the photograph device includes multiple frame straddling cameras, and frame straddling cameras is arranged in a one-to-one correspondence with dual-cavity laser, the input terminal of each frame straddling cameras
It is equipped with filtering assembly.Issue control signal by isochronous controller makes dual-cavity laser according to spy after certain delay
Fixed pulse sequence output laser pulse, making frame straddling cameras according to specific exposure time series, (i.e. multiple frame straddling cameras are exposed
The sequencing and time interval of imaging) it is exposed imaging.Since filtering assembly can only be by the light of specific wavelength, and filter
The wavelength for the light that component can pass through is identical as the wavelength for the laser pulse that corresponding dual-cavity laser exports.Firstly, first
Dual-cavity laser export two laser pulses, laser pulse by corresponding first filtering assembly and corresponding first across
Exposure obtains two images on frame camera.And then, second dual-cavity laser exports two laser pulses, although at this time first
Second frame image of a frame straddling cameras is still exposing, but the two laser pulses are due to that cannot pass through first filtering assembly
And can not on first frame straddling cameras exposure image, can only by corresponding second filtering assembly corresponding second across
Exposure image on frame camera, and so on to avoid the second frame image overexposure of each frame straddling cameras.By multi-cavity laser to
Output laser pulse illuminates the flow field in test chamber in test chamber, utilizes the tracer in flow field by filming apparatus
The scattering light exposure image that particle issues, to shoot flow field structure.Due to the time of the laser pulse of multi-cavity laser output
Interval is very short, and the exposure time interval of frame straddling cameras is hundred nanosecond orders, therefore the image of the flow field structure shot can be anti-
The temporal evolution process for reflecting flow field structure, can be used for the time evolution properties of analytical calculation flow field structure.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to accompanying drawings, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the operation time diagram of existing camera system；
Fig. 2 be the camera system for shooting flow field structure in wind tunnel test of the preferred embodiment of the present invention schematic diagram it
One；
Fig. 3 be the camera system for shooting flow field structure in wind tunnel test of the preferred embodiment of the present invention schematic diagram it
Two；
Fig. 4 is the schematic diagram of the pilot system for shooting flow field structure in wind tunnel test of the preferred embodiment of the present invention；
Fig. 5 is the operation timing of the camera system for shooting flow field structure in wind tunnel test of the preferred embodiment of the present invention
Schematic diagram.
Description of symbols:
1, test chamber；11, window；21, gas cylinder；22, particle generator；31, multi-cavity laser；311, two-chamber laser
Device；312, frequency multiplication closes tread assembly；3121, frequency-doubling crystal；3122, combined beam light road；313, piece optical assembly；314, light-conducting arm；32, it claps
Take the photograph device；321, frame straddling cameras；322, filtering assembly；323, spectrum groupware；3231, it is divided pyramid；3232, reflecting mirror；324,
Camera lens；33, isochronous controller；4, computer.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Fig. 1 is the operation time diagram of existing camera system；Fig. 2 is trying for wind-tunnel for the preferred embodiment of the present invention
Test one of the schematic diagram of camera system of middle shooting flow field structure；Fig. 3 is the preferred embodiment of the present invention in wind tunnel test
Shoot the two of the schematic diagram of the camera system of flow field structure；Fig. 4 is the preferred embodiment of the present invention for shooting in wind tunnel test
The schematic diagram of the pilot system of flow field structure；Fig. 5 is the preferred embodiment of the present invention for shooting flow field structure in wind tunnel test
Camera system operation time diagram.
As shown in Figures 2 and 3, the camera system for shooting flow field structure in wind tunnel test of the present embodiment, including with
In into test chamber 1 output laser pulse sent out with the flow field illuminated in test chamber 1 and the trace particle made in flow field
The multi-cavity laser 31 of light and the filming apparatus 32 for shooting flow field structure using scattering light exposure image, multi-cavity are scattered out
Laser 31 includes multiple dual-cavity lasers 311, and multiple dual-cavity lasers 311 export the laser pulse of different wave length respectively, is clapped
Taking the photograph device 32 includes multiple frame straddling cameras 321, and frame straddling cameras 321 is arranged in a one-to-one correspondence with dual-cavity laser 311, each across frame phase
The input terminal of machine 321 is equipped with the filtering assembly 322 for the light by specific wavelength, the light that filtering assembly 322 can pass through
Wavelength it is identical as the wavelength of laser pulse that corresponding dual-cavity laser 311 exports, camera system further include respectively with it is multiple
Dual-cavity laser 311 and multiple frame straddling cameras 321 connect and for controlling the pulse sequence of dual-cavity laser 311 respectively and across frame
The isochronous controller 33 of the exposure time series of camera 321.
Camera system for shooting flow field structure in wind tunnel test of the invention, including multi-cavity laser 31, shooting dress
Set 32 and isochronous controller 33.Multi-cavity laser 31 includes multiple dual-cavity lasers 311, and there are two the tools of dual-cavity laser 311
For exporting the cavity of laser, two laser pulses can be continuously exported with very short time interval (hundred nanosecond orders).Pass through
Isochronous controller 33 control dual-cavity laser 311 pulse sequence (i.e. multiple 311 output laser pulses of dual-cavity laser it is successive
Sequence and time interval), multi-cavity laser 31 can be made continuously to export with very short time interval (hundred nanosecond orders) multiple sharp
Light pulse, and the quantity of laser pulse is identical as the quantity of the cavity of multi-cavity laser 31.Since each dual-cavity laser 311 is defeated
The wavelength of laser pulse out is different, the flow field in the laser pulse illumination test chamber 1 of different wave length, the tracer in flow field
Particle will issue the scattering light of different wave length.Filming apparatus 32 includes multiple frame straddling cameras 321, and frame straddling cameras 321 and two-chamber swash
Light device 311 is arranged in a one-to-one correspondence, and the input terminal of each frame straddling cameras 321 is equipped with filtering assembly 322.Pass through isochronous controller 33
Control signal is issued, after certain delay, makes dual-cavity laser 311 according to specific pulse sequence output laser pulse,
Making frame straddling cameras 321 according to specific exposure time series, (i.e. multiple frame straddling cameras 321 are exposed sequencing and the time of imaging
Interval) it is exposed imaging.Since filtering assembly 322 can only be by the light of specific wavelength, and filtering assembly 322 can pass through
The wavelength of light is identical as the wavelength of laser pulse that corresponding dual-cavity laser 311 exports.Firstly, first dual-cavity laser
311 two laser pulses of output, laser pulse is by corresponding first filtering assembly 322 and in corresponding first across frame phase
Exposure obtains two images on machine 321.And then, second dual-cavity laser 311 exports two laser pulses, although at this time the
Second frame image of one frame straddling cameras 321 is still exposing, but the two laser pulses by first due to that cannot be filtered
Optical assembly 322 and can not on first frame straddling cameras 321 exposure image, corresponding second filtering assembly 322 can only be passed through
The exposure image on corresponding second frame straddling cameras 321, and so on to avoid the second frame image of each frame straddling cameras 321
Overexposure.By multi-cavity laser 31, into test chamber 1, output laser pulse illuminates the flow field in test chamber 1, leads to
The scattering light exposure image that filming apparatus 32 is issued using the trace particle in flow field is crossed, to shoot flow field structure.Due to more
The time interval for the laser pulse that cavity laser 31 exports is very short, and the exposure time interval of frame straddling cameras 321 is hundred nanoseconds amount
Grade, therefore the image of the flow field structure shot is able to reflect the temporal evolution process of flow field structure, can be used for analytical calculation stream
The time evolution properties of field structure.Optionally, trace particle can be nanoparticle, be also possible to carry out PIV test the speed it is larger
The particle of scale.Optionally, multi-cavity laser 31 is four cavity lasers, six cavity lasers or eight cavity lasers.Optionally, it filters
Component 322 uses narrow band filter or narrow band filter.Optionally, after a pulse period terminates, can start next
Pulse period.
As shown in Fig. 2, the output end of dual-cavity laser 311 is equipped with for exporting to dual-cavity laser 311 in the present embodiment
Laser pulse carry out frequency multiplication and close beam frequency multiplication close tread assembly 312.It can be by infrared light by carrying out frequency multiplication to laser pulse
Become the shorter visible light of wavelength, is convenient for eye-observation.By multipath laser pulse that multiple dual-cavity lasers 311 are exported into
Row closes beam, is overlapped multipath laser pulse spatially, the same area that may be implemented in stream field is illuminated.
As shown in Fig. 2, frequency multiplication closes tread assembly 312 including the output end of dual-cavity laser 311 is arranged in simultaneously in the present embodiment
Laser pulse for exporting to dual-cavity laser 311 carries out the frequency-doubling crystal 3121 of frequency multiplication and frequency-doubling crystal 3121 is arranged in
Output end and the combined beam light road 3122 for being used to carry out closing to the laser pulse that frequency-doubling crystal 3121 exports beam.Dual-cavity laser 311
After the laser pulse of output carries out frequency multiplication by frequency-doubling crystal 3121, multipath laser pulse passes through combined beam light road 3122 again and is closed
Beam obtains laser pulse all the way.
As shown in Fig. 2, the output end on combined beam light road 3122 is equipped with for the output of pairing beam optical path 3122 in the present embodiment
The piece optical assembly 313 of laser pulse progress shaping.Shaping is carried out to laser pulse by piece optical assembly 313, obtains swashing for sheet
Mating plate light pulse, can be with the illumination zone of expansion of laser light pulse.
As shown in figure 3, filming apparatus 32 further includes that the input terminal of filtering assembly 322 is arranged in and is used in the present embodiment
By light be dispersed to filtering assembly 322 spectrum groupware 323 and the input terminal of spectrum groupware 323 is set and be used to assemble light to
The camera lens 324 of spectrum groupware 323.Light is assembled to spectrum groupware 323 by camera lens 324, then passes through spectrum groupware 323 for light
It is dispersed to filtering assembly 322, it is ensured that the same area in multiple 321 stream fields of frame straddling cameras is shot.
As shown in figure 3, spectrum groupware 323 includes the output end of camera lens 324 being arranged in and for dividing light in the present embodiment
It dissipates the light splitting pyramid 3231 for multi-beam and is arranged between the output end of light splitting pyramid 3231 and the input terminal of filtering assembly 322
And the reflecting mirror 3232 for multi-beam to be reflexed to corresponding filtering assembly 322.Light can be separated by light splitting pyramid 3231
Then multi-beam is reflexed to corresponding filtering assembly 322 by reflecting mirror 3232 by multi-beam.
As shown in figure 4, the preferred embodiment of the present invention additionally provide it is a kind of for shooting flow field structure in wind tunnel test
Pilot system, including to form the test chamber 1 in flow field for being flowed for air-flow, be connected to simultaneously with the input terminal of test chamber 1
For inputting the trace particle input unit of trace particle into test chamber 1 and for shooting in test chamber 1
The camera system of flow field structure, camera system is using above-mentioned for shooting the camera system of flow field structure in wind tunnel test.Gas
Stream flowing in test chamber 1 forms flow field, and trace particle input unit inputs trace particle into test chamber 1, so
After flow field structure can be shot by camera system.
As shown in figure 4, trace particle input unit includes the gas cylinder 21 and difference for output gas in the present embodiment
Trace particle is connected to and be used to generate with the input terminal of the output end of gas cylinder 21 and test chamber 1 and trace particle is made to follow gas
Body flows to the particle generator 22 in test chamber 1.Gas cylinder 21 can be produced with output high-pressure gas, particle generator 22
Raw trace particle, trace particle mix in particle generator 22 with gas and gas are followed to flow in test chamber 1.
As shown in figure 4, offering window 11, the multi-cavity laser 31 of camera system on test chamber 1 in the present embodiment
It is equipped with for extending at window 11 and the light-conducting arm 314 of the output laser pulse into test chamber 1 of alignment windows 11, claps
Take the photograph 324 alignment windows 11 of camera lens of the filming apparatus 32 of system.Light-conducting arm 314 on multi-cavity laser 31 extends at window 11
And alignment windows 11, flow field can be illuminated by output laser pulse into test chamber 1, the camera lens 324 of filming apparatus 32 is right
Quasi- window 11 can be shot with region to be illuminated in stream field.
As shown in figure 4, in the present embodiment, pilot system further include respectively with the filming apparatus of camera system 32 and synchronous control
The computer 4 that device 33 processed connects and the image for acquiring the shooting of filming apparatus 32 and control isochronous controller 33 work.It calculates
Machine 4 can acquire the image of the shooting of filming apparatus 32, then analytical calculation be carried out to image, to obtain the time of flow field structure
Evolution properties.Computer 4 can also control isochronous controller 33 and issue control signal.
As shown in figure 5, t indicates delay, a indicates that isochronous controller 33 issues the timing of control signal, and b indicates two-chamber laser
The timing of 311 output laser pulse of device, c indicate the timing of 321 exposure image of frame straddling cameras.Dual-cavity laser 311 and across frame phase
Machine 321 output laser pulse and is exposed imaging correspondingly, is not in the second frame image overexposure of frame straddling cameras 321
The phenomenon that.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of for shooting the camera system of flow field structure in wind tunnel test, which is characterized in that
Including being used for test chamber (1) interior output laser pulse to illuminate the flow field in the test chamber (1) and make
Trace particle in the flow field issue scattering light multi-cavity laser (31) and for using the scattering light exposure image with
The filming apparatus (32) of flow field structure is shot,
The multi-cavity laser (31) includes multiple dual-cavity lasers (311), and multiple dual-cavity lasers (311) export respectively
The laser pulse of different wave length, the filming apparatus (32) include multiple frame straddling cameras (321), the frame straddling cameras (321) with
The dual-cavity laser (311) is arranged in a one-to-one correspondence, and the input terminal of each frame straddling cameras (321) is equipped with for passing through spy
The filtering assembly (322) of the long light of standing wave, the wavelength of the light that the filtering assembly (322) can pass through and corresponding two-chamber laser
The wavelength of the laser pulse of device (311) output is identical,
The camera system further includes connecting respectively with multiple dual-cavity lasers (311) and multiple frame straddling cameras (321)
Connect and be used to control respectively the pulse sequence of the dual-cavity laser (311) and the exposure time series of the frame straddling cameras (321)
Isochronous controller (33).
2. according to claim 1 for shooting the camera system of flow field structure in wind tunnel test, which is characterized in that
The output end of the dual-cavity laser (311) be equipped with laser pulse for being exported to the dual-cavity laser (311) into
Row frequency multiplication and the frequency multiplication for closing beam close tread assembly (312).
3. according to claim 2 for shooting the camera system of flow field structure in wind tunnel test, which is characterized in that
It includes setting in the output end of the dual-cavity laser (311) and for described double that the frequency multiplication, which closes tread assembly (312),
The laser pulse of cavity laser (311) output carries out the frequency-doubling crystal (3121) of frequency multiplication and is arranged in the frequency-doubling crystal (3121)
Output end and for the laser pulse that the frequency-doubling crystal (3121) exports carry out conjunction beam combined beam light road (3122).
4. according to claim 3 for shooting the camera system of flow field structure in wind tunnel test, which is characterized in that
The output end of the combined beam light road (3122) is equipped with the laser pulse for exporting to the combined beam light road (3122) and carries out
The piece optical assembly (313) of shaping.
5. according to claim 1 for shooting the camera system of flow field structure in wind tunnel test, which is characterized in that
The filming apparatus (32) further includes setting in the input terminal of the filtering assembly (322) and is used to for light being dispersed to described
The spectrum groupware (323) of filtering assembly (322) and setting the spectrum groupware (323) input terminal and for by light assemble to
The camera lens (324) of the spectrum groupware (323).
6. according to claim 5 for shooting the camera system of flow field structure in wind tunnel test, which is characterized in that
The spectrum groupware (323) includes setting in the output end of the camera lens (324) and for light to be separated into multi-beam
Be divided pyramid (3231) and setting output end and the filtering assembly (322) of light splitting pyramid (3231) input terminal it
Between and for multi-beam to be reflexed to the reflecting mirror (3232) of corresponding filtering assembly (322).
7. a kind of for shooting the pilot system of flow field structure in wind tunnel test, which is characterized in that
Including to form the test chamber (1) in flow field for being flowed for air-flow, be connected to the input terminal of the test chamber (1)
And for the trace particle input unit of input trace particle into the test chamber (1) and for shooting the wind-tunnel
The camera system of flow field structure in test section (1),
The camera system is described in any item for shooting the shooting of flow field structure in wind tunnel test using claim 1~6
System.
8. according to claim 7 for shooting the pilot system of flow field structure in wind tunnel test, which is characterized in that
The trace particle input unit includes for the gas cylinder (21) of output gas and defeated with the gas cylinder (21) respectively
Outlet is connected to and is used to generate trace particle with the input terminal of the test chamber (1) and to follow the trace particle described
Gas flows to the particle generator (22) in the test chamber (1).
9. according to claim 7 for shooting the pilot system of flow field structure in wind tunnel test, which is characterized in that
It is offered window (11) on the test chamber (1), the multi-cavity laser (31) of the camera system, which is equipped with, to be used for
Extend at the window (11) and be aligned the leaded light of the window (11) Xiang Suoshu test chamber (1) interior output laser pulse
The camera lens (324) of arm (314), the filming apparatus (32) of the camera system is directed at the window (11).
10. according to claim 7 for shooting the pilot system of flow field structure in wind tunnel test, which is characterized in that
The pilot system further includes connecting simultaneously with the filming apparatus of the camera system (32) and isochronous controller (33) respectively
For acquiring the image of the filming apparatus (32) shooting and controlling the computer (4) of isochronous controller (33) work.
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| CN111999030A (en) * | 2020-10-29 | 2020-11-27 | 中国空气动力研究与发展中心高速空气动力研究所 | Three-dimensional oil flow VR (virtual reality) online measurement and display system and working method thereof |
| CN112082731A (en) * | 2020-09-04 | 2020-12-15 | 中国农业大学 | Nanosecond image measuring system for cavitation research |
| CN112489134A (en) * | 2020-11-26 | 2021-03-12 | 南方科技大学 | Motion estimation-oriented design method of cross-frame ultrahigh-speed camera and motion estimation method |
| CN113960043A (en) * | 2021-10-20 | 2022-01-21 | 中国人民解放军国防科技大学 | Method and device for determining time evolution characteristics of supersonic/hypersonic turbulence |
| CN112489134B (en) * | 2020-11-26 | 2024-05-14 | 南方科技大学 | Motion estimation-oriented frame-crossing ultra-high-speed camera design method and motion estimation method |
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