CN115824570A - Pneumatic optical transmission effect simulation test system - Google Patents
Pneumatic optical transmission effect simulation test system Download PDFInfo
- Publication number
- CN115824570A CN115824570A CN202211597879.3A CN202211597879A CN115824570A CN 115824570 A CN115824570 A CN 115824570A CN 202211597879 A CN202211597879 A CN 202211597879A CN 115824570 A CN115824570 A CN 115824570A
- Authority
- CN
- China
- Prior art keywords
- module
- optical
- test system
- optical transmission
- simulation test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to the technical field of aerospace experiments, in particular to a pneumatic optical transmission effect simulation test system which comprises an optical target module, an atmospheric environment simulation module, an image receiving module and a storage control module, wherein the optical target module is used for receiving an image; the optical target module is used for emitting an optical signal; the atmospheric environment simulation module is used for generating an atmospheric cloud environment; the optical signal sent by the optical target simulation module is received and collected by the image receiving module through the atmospheric cloud environment generated by the atmospheric environment simulation module; the storage control module is used for storing images; the optical target module comprises a fiber laser, the fiber laser is connected with a collimator through an optical fiber, a laser beam forms parallel light after passing through the collimator, an electric lifting table is arranged at the bottom of the collimator, and an electric displacement table is arranged at the bottom of the electric lifting table. The invention can simulate the optical transmission process of target radiation signals on the ground and measure the pneumatic optical transmission effect of simulated atmospheric environment.
Description
Technical Field
The invention relates to the technical field of aerospace experiments, in particular to a pneumatic optical transmission effect simulation test system.
Background
With increasingly severe international situation, higher requirements are put forward on the performance of weaponry in China, and the 'clear view and accurate placement' is the ultimate pursuit of attacking and defending weapons, and the key problem to be solved is how to improve the detection and guidance precision of the weaponry. Optical detection is an important detection means of weaponry, an enemy target inevitably radiates visible light and infrared signals, but in the process of transmitting target radiation signals in the atmosphere, the signals are attenuated and deflected due to media such as cloud and mist existing in the atmosphere, so that the target signals cannot be received by a detector or are difficult to identify, and finally, the detection distance and the detection precision are reduced. Therefore, it is very important to study the aerodynamic optical transmission effect of atmospheric cloud environment for the improvement of detection capability.
Cloud droplet particles (including liquid and solid particles) existing in the atmospheric cloud have reflection, absorption, scattering and refraction effects on the target light beam, so that the target light beam generates serious energy attenuation and direction deviation, the imaging fuzzy recognition of a detection system is difficult, and the detection distance is greatly shortened. The research on the pneumatic optical transmission effect of the atmospheric environment can be mainly carried out through three ways of flight test, ground test and numerical simulation. Flight tests are the most direct way, and can be used for research on real atmosphere, but the flight tests are very expensive in cost and difficult in test state recurrence, so that the flight tests are very limited. The numerical simulation method can simulate the distribution of cloud and fog particles by adopting a particle distribution model so as to calculate the optical transmission effect of the cloud and fog particles, but the particle distribution model adopted by the numerical simulation is a simplified model, is still different from a real environment, and is difficult to verify the accuracy of the cloud and fog particles.
Therefore, aiming at the ground simulation test requirement of the target detection aero-optical transmission effect of the weaponry, the technical personnel in the field need to solve the problem of providing an aero-optical transmission effect simulation test system for accurately simulating the optical transmission process of the target radiation signal.
Disclosure of Invention
The invention aims to provide a pneumatic optical transmission effect simulation test system which can simulate the optical transmission process of a target radiation signal on the ground, measure the pneumatic optical transmission effect of a simulated atmospheric environment, study the pneumatic optical transmission rule under different states and thickness conditions and provide a new test means for the test simulation of the target detection of weaponry.
The invention provides a pneumatic optical transmission effect simulation test system, which comprises an optical target module, an atmospheric environment simulation module, an image receiving module and a storage control module, wherein the optical target module is used for simulating the atmospheric environment;
the optical target module is used for emitting an optical signal;
the atmospheric environment simulation module is used for generating an atmospheric cloud environment;
the optical signal sent by the optical target simulation module is received and collected by the image receiving module through the atmosphere cloud environment generated by the atmosphere environment simulation module;
the storage control module is used for storing images;
the optical target module comprises a fiber laser, the fiber laser is connected with a collimator through an optical fiber, a laser beam forms parallel light after passing through the collimator, an electric lifting table is arranged at the bottom of the collimator, and an electric displacement table is arranged at the bottom of the electric lifting table.
Preferably, the atmosphere simulation module comprises a bottom water tank and a glass frame, the glass frame covers the bottom water tank, a cover plate is arranged at the top of the glass frame to form a sealed environment, a support is arranged at the bottom of the cover plate, an atomization water tank filled with water is placed on the support, an ultrasonic atomizer is placed in the atomization water tank and completely immersed in the water, and the ultrasonic atomizer is controlled to start and adjust power through an atomizer controller.
Preferably, the bottom of the glass frame is provided with a notch for the cable to pass through.
Preferably, water is filled in the bottom water tank, so that the system tightness is ensured, and liquefied water vapor is recycled.
Preferably, the bottom of the electric displacement table is provided with a support device so that the optical target module leaves the water surface.
Preferably, the image receiving module comprises a camera and an attenuation sheet, the attenuation sheet is positioned at one side of the camera lens, and the collimator, the attenuation sheet and the camera are in a straight line.
Preferably, the bottom of camera is equipped with the cloud platform, the cloud platform bottom is equipped with vertical direction elevating platform, vertical direction elevating platform bottom is equipped with lateral displacement platform and vertical displacement platform in proper order.
Preferably, the fiber laser is a solid laser or a semiconductor laser.
Preferably, the electric lifting platform and the electric displacement platform are controlled to move through a lifting displacement control box.
Preferably, the glass frame is made of colorless transparent organic glass.
Has the beneficial effects that:
the pneumatic optical transmission effect simulation test system can realize the measurement of the pneumatic optical transmission effect under the condition of a laboratory, and has lower cost, more accurate control of test conditions and repeatability compared with a flight test; compared with a numerical simulation method, the method is closer to a real environment and has higher reliability; compared with the traditional pneumatic optical wind tunnel test method, the method introduces the influence of atmospheric environment transmission, expands the test simulation capability and improves the engineering application capability of the test simulation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of the whole pneumatic optical transmission effect simulation test system of the present invention;
FIG. 2 is a schematic representation of an optical targeting module of the present invention;
FIG. 3 is a schematic diagram of an atmospheric environment simulation module according to the present invention;
FIG. 4 is a diagram of an image receiving module according to the present invention;
FIG. 5 is a comparison of target images after atmospheric transmission in accordance with the present invention;
FIG. 6 is a graph of contrast of a target pattern according to the present invention with increasing cloud thickness.
Description of the reference numerals: the system comprises an optical target module, a 2-atmospheric environment simulation module, a 3-image receiving module, a 4-storage control module, a 5-collimator, a 6-fiber laser, a 7-electric lifting platform, an 8-electric displacement platform, a 9-lifting displacement control box, a 10-supporting device, an 11-cover plate, a 12-glass frame, a 13-bottom water tank, a 14-ultrasonic atomizer, a 15-atomizing water tank, a 16-support, a 17-atmospheric cloud and mist environment, an 18-atomizer controller, a 19-camera, a 20-attenuation sheet, a 21-cloud platform, a 22-vertical direction lifting platform, a 23-transverse displacement platform and a 24-longitudinal displacement platform.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "coupled" are to be construed broadly and may include, for example, fixed connections, removable connections, or integral connections; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Example 1
A pneumatic optical transmission effect simulation test system is shown in figure 1 and comprises an optical target module 1, an atmospheric environment simulation module 2, an image receiving module 3 and a storage control module 4. The optical signal sent by the optical target simulation module 1 passes through the atmosphere cloud and fog environment generated by the atmosphere environment simulation module 2, and is received and collected by the image receiving module 3, and the storage control module 4 is responsible for parameter setting, collection control and image storage of the camera in the image receiving module 3.
Fig. 2 is a schematic diagram of the optical target module 1, where the optical target module 1 is composed of a collimator 5, a fiber laser 6, an electric lifting table 7, an electric displacement table 8, a lifting displacement control box 9, and a support device 10. The collimator 5 and the fiber laser 6 form an optical target to simulate a target radiation signal, the fiber laser 6 is a solid or semiconductor laser, the wave band is visible light, the preferred wavelength is 532nm, the fiber laser 6 is connected with the collimator 5 through an optical fiber, a laser beam forms parallel light after passing through the collimator 5, and the diameter of the light beam is 1-3 mm. The height of laser beam can be adjusted to electric lift platform 7, and the front and back position of laser beam can be adjusted to electric displacement platform 8, and then adjusts the thickness that the light beam passed atmosphere cloud and mist, and the start-up and the displacement of electric lift platform 7 and electric displacement platform 8 are controlled to lift displacement control box 9. The support means 10 support the above components away from the water surface.
Fig. 3 is a schematic diagram of the atmospheric environment simulation system 2, and the atmospheric environment simulation module 2 is composed of a cover plate 11, a glass frame 12, a bottom water tank 13, an ultrasonic atomizer 14, an atomizing water tank 15, a support 16, and an atomizer controller 18. The cover plate 11, the glass frame 12 and the bottom water tank 13 form a closed atmosphere cloud environment, and the cover plate 11 ensures the tightness of the system; the glass frame 12 is made of organic glass with high transmittance, so that the light attenuation is reduced, and a gap is reserved at the bottom for a cable to pass through; the bottom water tank 13 is filled with water, so that the system tightness is ensured, and liquefied water vapor is recovered. The ultrasonic atomizer 14 is placed in an atomizing water tank 15 and is completely immersed in water, and the starting and the power adjustment are controlled by an atomizer controller 18, so that the diameter of the generated cloud particles is between 20 and 40 mu m. The atomizing water tank 15 is placed on the support 16 and suspended above the glass frame, in this way, the cloud particles generated by the ultrasonic atomizer 14 can be settled downwards, and the gravity and the buoyancy of the particles are balanced below the glass frame, so that a uniform and stable atmosphere cloud environment 17 is formed.
Fig. 4 is a schematic diagram of the image receiving system 3, and the image receiving system 3 is composed of a camera 19, an attenuation sheet 20, a pan/tilt head 21, an elevating table 22, a displacement table 23 and a displacement table 24. The optical resolution of the camera 19 is not less than 600 × 800, the acquisition frequency is not less than 100Hz, and an optical target image varying with time can be obtained. The attenuation sheet 20 can attenuate the energy of the laser beam to prevent damage to the camera 19 or overexposure of the image due to too high energy. The pan-tilt 21, the vertical elevating table 22, the horizontal displacement table 23 and the longitudinal displacement table 24 together form a six-degree-of-freedom camera attitude control system, which can adjust the position and attitude of the camera 19, so that the optical target signal vertically enters the imaging chip.
Fig. 5 is a comparison diagram of a target image after atmospheric transmission, the left side is a target pattern in an environment without atmospheric cloud and mist, the right side is a target pattern passing through the environment with atmospheric cloud and mist, and a ratio of an average gray level of the target pattern to an average gray level of a background in the image is defined as a contrast of the target image.
Fig. 6 is a graph showing the contrast of the target pattern as the thickness of the cloud increases, and it can be seen that the contrast of the target image decreases rapidly as the thickness of the cloud through which the target beam passes increases, and when the thickness of the cloud is 50mm, the contrast of the target image approaches 1, and the target cannot be identified from the background.
The invention provides a pneumatic optical transmission effect simulation test system for an atmospheric environment ground simulation device and a target radiation signal pneumatic optical transmission effect test system. The atmospheric environment ground simulation device can simulate main atmospheric components (gas and cloud particles) in the ground environment, the cloud particles are generated in an ultrasonic atomization mode, and compared with thermal insulation expansion mist making, the cloud environment is more stable; compared with evaporation and fog making, the temperature is closer to the real temperature; compared with mechanical fogging, the cloud particle diameter is smaller. And the atomizer is suspended, so that the cloud and mist particles sink, and the generated cloud and mist is more stable and controllable.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A pneumatic optical transmission effect simulation test system is characterized by comprising an optical target module, an atmospheric environment simulation module, an image receiving module and a storage control module;
the optical target module is used for emitting an optical signal;
the atmospheric environment simulation module is used for generating an atmospheric cloud environment;
the optical signal sent by the optical target simulation module is received and collected by the image receiving module through the atmospheric cloud environment generated by the atmospheric environment simulation module;
the storage control module is used for storing images;
the optical target module comprises a fiber laser, the fiber laser is connected with a collimator through an optical fiber, a laser beam forms parallel light after passing through the collimator, an electric lifting table is arranged at the bottom of the collimator, and an electric displacement table is arranged at the bottom of the electric lifting table.
2. The pneumatic optical transmission effect simulation test system according to claim 1, wherein the atmosphere simulation module comprises a bottom water tank and a glass frame, the glass frame covers the bottom water tank, a cover plate is arranged on the top of the glass frame to form a sealed environment, a support is arranged on the bottom of the cover plate, an atomized water tank filled with water is placed on the support, an ultrasonic atomizer is placed in the atomized water tank and is completely immersed in the water, and the ultrasonic atomizer is controlled to be started and regulated in power through an atomizer controller.
3. The aero-optical transmission effect simulation test system according to claim 2, wherein the bottom of the glass frame is provided with a notch for a cable to pass through.
4. The system for simulation test of aerodynamic optical transmission effect according to claim 3, wherein the bottom water tank is filled with water to ensure system tightness and to recover liquefied water vapor.
5. The pneumatic optical transport effect simulation test system of claim 4, wherein the base of the motorized displacement stage is provided with a support device to allow the optical target module to be moved away from the water surface.
6. The pneumatic optical transport effect simulation test system of claim 1, wherein the image receiving module comprises a camera and an attenuation sheet, the attenuation sheet is located on one side of the camera lens, and the collimator, the attenuation sheet and the camera are in a straight line.
7. The pneumatic optical transmission effect simulation test system according to claim 6, wherein a holder is arranged at the bottom of the camera, a vertical direction lifting platform is arranged at the bottom of the holder, and a transverse displacement platform and a longitudinal displacement platform are sequentially arranged at the bottom of the vertical direction lifting platform.
8. The pneumatic optical transmission effect simulation test system according to claim 1, wherein the fiber laser is a solid laser or a semiconductor laser.
9. The pneumatic optical transport effect simulation test system of claim 1, wherein the motorized lift stage and the motorized displacement stage are controlled to move by a lift displacement control box.
10. The aero-optical transmission effect simulation test system according to claim 2, wherein the bezel is made of clear and colorless organic glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211597879.3A CN115824570A (en) | 2022-12-14 | 2022-12-14 | Pneumatic optical transmission effect simulation test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211597879.3A CN115824570A (en) | 2022-12-14 | 2022-12-14 | Pneumatic optical transmission effect simulation test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115824570A true CN115824570A (en) | 2023-03-21 |
Family
ID=85546867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211597879.3A Pending CN115824570A (en) | 2022-12-14 | 2022-12-14 | Pneumatic optical transmission effect simulation test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115824570A (en) |
-
2022
- 2022-12-14 CN CN202211597879.3A patent/CN115824570A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105571983B (en) | A kind of fuel ball geometric density measuring method and its system | |
| CN104567738B (en) | Parallelism of optical axis accurate measuring systems and method | |
| CN103308005B (en) | The Photoperiodic effects method of the anti-photoelectric observing collimation device of linear array | |
| CN109253797B (en) | Laser irradiation effect test system and method | |
| CN112577694B (en) | Infrared pneumatic optical distortion wind tunnel test system | |
| US20050219522A1 (en) | System and method for the measurement of optical distortions | |
| CN106018346A (en) | Aerosol scattering phase function observing device and method | |
| CN104121805A (en) | Target lane space benchmark device and adjusting method thereof | |
| CN108414261B (en) | Plateau environment performance test system and test method for laser irradiator | |
| CN211262141U (en) | General optical axis calibration equipment of armed helicopter outfield | |
| CN108680188A (en) | PST (Power System test) and extremely weak target simulation system and PST and detection capability test method | |
| CN218994687U (en) | Pneumatic optical transmission effect simulation test system | |
| CN115824570A (en) | Pneumatic optical transmission effect simulation test system | |
| CN216270004U (en) | Target detection environment ground simulation system | |
| CN104142497B (en) | A kind of novel relevant anemometry laser radar telescopic system | |
| CN108051182A (en) | A kind of laser subsystem integral test system | |
| CN208333496U (en) | PST test and extremely weak target simulation system | |
| CN116753777A (en) | Laser weapon aiming performance test method and system | |
| CN111766610B (en) | Aerosol laser radar system based on CCD lateral detection | |
| CN110567317B (en) | Laser weapon | |
| CN213620237U (en) | Hydraulic tunnel detection autonomous flight unmanned aerial vehicle carrying data acquisition device | |
| CN115061497A (en) | Unmanned aerial vehicle photovoltaic panel inspection method and system | |
| CN114689898A (en) | Device and method for observing femtosecond laser filamentation impact cloud droplets | |
| CN108227039A (en) | A kind of atmospheric turbulence intensity and visibility measurement device | |
| Steinvall | Beam tracking and atmospheric influence on laser performance in defeating UAV: s |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |