CN110868267A - Underwater wireless optical communication infield channel simulation device - Google Patents
Underwater wireless optical communication infield channel simulation device Download PDFInfo
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- CN110868267A CN110868267A CN201911205853.8A CN201911205853A CN110868267A CN 110868267 A CN110868267 A CN 110868267A CN 201911205853 A CN201911205853 A CN 201911205853A CN 110868267 A CN110868267 A CN 110868267A
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- optical communication
- infield
- box body
- simulation device
- water
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
- H04B10/114—Indoor or close-range type systems
- H04B10/116—Visible light communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B13/00—Transmission systems characterised by the medium used for transmission, not provided for in groups H04B3/00 - H04B11/00
- H04B13/02—Transmission systems in which the medium consists of the earth or a large mass of water thereon, e.g. earth telegraphy
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention provides an underwater wireless optical communication infield channel simulation device which comprises a box body, wherein the box body is a containing cavity with an open upper part, a cover plate is connected to the open upper part of the box body, a front porthole, a water pump and a water pipe connector of the water pump are arranged on a front panel of the box body, a rear porthole is arranged on a rear panel, a movable partition plate is arranged between the front panel and the rear panel, and a light meter is arranged on one side panel of the box body. According to the invention, tap water is injected into the simulation device, and aluminum hydroxide, sea salt and the like are added into the water to simulate suspended particles and seawater salinity in the water, so that underwater environments with different visibility are obtained; by adopting a movable partition plate mode, the problem that the dynamic simulation of channel environments at different distances cannot be carried out due to the fact that the length of a traditional box body cannot be changed is solved; different water flow rates are generated through pump compression, and then the influence of underwater channels on optical communication in different distances, different water flows, different communication rates and encoding modes is developed, so that an underwater channel simulation model is constructed.
Description
Technical Field
The invention relates to an underwater wireless optical communication infield channel simulation device which is used for carrying out underwater wireless optical communication channel simulation, obtaining relevant channel parameters and providing guarantee for design optimization of an underwater optical communication system and verification of performance indexes of a system part.
Background
The transmission environment of underwater optical communication is relatively severe, and the rapid flow of water can cause local change of the transmission characteristics of the water, so that light beams are instantaneously deviated from the original transmission direction, the reliability of communication is influenced, the channel coding can improve the communication quality and the working distance. How to encode the channel needs to be combined with the characteristics of a specific underwater optical communication system, the channel is obtained through theoretical analysis, and then the channel is verified through experiments. Therefore, the influence of the change of the impurities and water body parameters in water on optical signal transmission needs to be deeply researched by combining the optical characteristics of marine organisms, theoretical models of various typical seawater channels in a dynamic environment are established, and experimental verification optimization and a channel coding scheme are carried out after theoretical analysis is carried out.
The existing simulation system has various varieties and is mainly used for researching influences of suspended sediment movement, turbulence, laminar flow and the like, however, the existing simulation system for underwater optical communication basically adopts a static box structure, has less consideration on influences of illuminance, flocculation flow and the like, and cannot dynamically adjust the distance; therefore, it is urgently needed to adopt a special simulation system for an underwater wireless optical communication system to construct a more real infield mode simulation environment and provide necessary test guarantee conditions for deeply developing underwater optical communication.
Disclosure of Invention
In order to solve the problems, the underwater wireless optical communication internal field channel simulation device is provided.
The object of the invention is achieved in the following way:
the utility model provides an underwater wireless optical communication infield channel analogue means, includes the box, the box be the open cavity that holds in upper portion, set up front porthole and water pump and water pipe connection on the front panel of a apron, box are connected to the opening department of box top, set up rear porthole on the rear panel, set up portable baffle between front panel and the rear panel, set up the illuminometer on the one side board of box.
Tap water is filled in the box body, and aluminum hydroxide and sea salt are added in the tap water.
The front porthole is made of optical glass with a high-transmittance coating film in an optical signal wave band, and the signal of the tested optical communication equipment is injected into the box body.
The water pump and the water pipe interface thereof complete the injection of different water flows, and the interface is provided with a valve for regulating the flow rate.
The rear porthole is made of optical glass with a high-transmittance coating film in an optical signal wave band, and the signal output of the tested optical communication equipment is completed.
The movable partition plate is provided with optical glass and a water pipe connector which are the same as the front porthole in height.
The upper part of the movable partition board is also provided with a handle.
And the cover plate is provided with a simulation light source for completing the illumination simulation.
The simulation light source can simulate the illuminance of 0-10000 lx through switching and current regulation.
The movable partition plate can finish the partition of different distances of 1, 2 and 3. Compared with the prior art, the underwater environment under different visibility conditions is obtained by injecting tap water into the simulation device, and adding aluminum hydroxide, sea salt and the like into the water to simulate suspended particles and seawater salinity in the water; by adopting a movable partition plate mode, the problem that the dynamic simulation of channel environments at different distances cannot be carried out due to the fact that the length of a traditional box body cannot be changed is solved; different water flow rates are generated through pump compression, and then the influence of underwater channels on optical communication in different distances, different water flows, different communication rates and encoding modes is developed, so that an underwater channel simulation model is constructed. The invention fully considers the influence of factors such as distance, turbulence and illuminance on underwater optical communication, adopts the watertight design of the equidistant clapboard, and adopts the turbulence simulation and sunlight illuminance simulation technology under the typical environment, and can simulate and test and verify the actual use scene of the underwater optical communication system.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front porthole configuration view according to the present invention;
FIG. 3 is a schematic view of a portable partition according to the present invention;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic view of the inner side of the cover plate
Fig. 6 is a side view of the cover plate.
The device comprises a water pump and a water pipe connector of the water pump, wherein 1 is a box body, 3 is a front porthole, 4 is a movable partition plate, 5 is a cover plate, 6 is a light meter, 7 is a rear porthole, 8 is optical glass, 9 is a sealing washer, 10 is a pressing ring, 11 is a water pipe, 12 is a simulation light source, 13 is a handle, 14 is a bolt, 15 is a gasket, and 16 is a cover plate handle.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same technical meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be further understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of the stated features, steps, operations, devices, components, and/or combinations thereof.
In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only terms of relationships determined for convenience of describing structural relationships of the parts or elements of the present invention, and are not intended to refer to any parts or elements of the present invention, and are not to be construed as limiting the present invention.
In the present invention, terms such as "fixedly connected", "connected", and the like are to be understood in a broad sense, and mean either a fixed connection or an integrally connected or detachable connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be determined according to specific situations by persons skilled in the relevant scientific or technical field, and are not to be construed as limiting the present invention.
The utility model provides an underwater wireless optical communication infield channel analogue means, includes the box, the box be the open cavity that holds in upper portion, set up front porthole and water pump and water pipe connection on the front panel of a apron, box are connected to the opening department of box top, set up rear porthole on the rear panel, set up portable baffle between front panel and the rear panel, set up the illuminometer on the one side board of box.
Tap water is filled in the box body, and aluminum hydroxide and sea salt are added in the tap water.
The front porthole is made of optical glass with a high-transmittance coating film in an optical signal wave band, and the signal of the tested optical communication equipment is injected into the box body.
The water pump and the water pipe interface thereof complete the injection of different water flows, and the interface is provided with a valve for regulating the flow velocity, thereby completing the simulation of underwater turbulence.
The rear porthole is made of optical glass with a high-transmittance coating film in an optical signal wave band, and the signal output of the tested optical communication equipment is completed.
The movable partition plate is provided with optical glass and a water pipe which have the same height as the front porthole.
The upper part of the movable partition board is also provided with a handle.
And the cover plate is provided with a simulation light source for completing the illumination simulation.
The simulation light source can simulate the illuminance of 0-10000 lx through switching and current regulation.
The movable partition plate can finish the partition of different distances of 1, 2 and 3.
The working principle is as follows: the flow speed is controlled by a water pump 1 and a water pipe connector thereof to be injected into a tank body 2, the well-prepared simulated seawater completes simulation of water flow with different seawater flow speeds, a tested optical communication system emits optical signals, the optical signals are automatically switched to a simulated seawater channel from an atmospheric channel through a front porthole 3, simulation of sunlight noise with different illumination is performed on the channels by adopting a cover plate 5 and a simulated light source 12 thereof, testing is performed by an illuminometer 6, optical signals are output after passing through a movable partition plate 4 or a rear porthole 7, and the optical signals are transmitted to an optical communication receiving end through the atmospheric channel, so that channel simulation and test verification are finally completed.
As shown in figure 1, the invention mainly comprises a water pump 1 and a water pipe connector thereof, a box body 2, a front porthole 3, a movable partition plate 4, a cover plate 5 and a simulation light source 12 thereof, a light meter 6 and a rear porthole 7. The box be the open cavity that holds in upper portion, the front panel that sets up preceding porthole and water pump and water pipe connection on the uncovered department of box top connects a apron 5, box sets up back porthole on the rear panel, sets up portable baffle between front panel and the rear panel, sets up illuminometer 6 on the one side board of box.
The water pump 1 and the water pipe interface thereof finish different water flow injection, and is characterized in that deep seawater is simulated, the flow velocity of the deep seawater is lower, generally below 10 cm/s, the corresponding water flow velocity is generated by combining the size of the box body 2, and meanwhile, the flow velocity is adjusted by adopting a valve at the interface.
The box body 2 completes the function of simulating the seawater environment, and suspended particles in simulated water such as aluminum hydroxide, sea salt and the like and seawater salinity are added into the water through the injected tap water to obtain underwater environments under different visibility; the method is characterized in that except for considering the defects of conventional treatment such as removing oxide skin of parts, avoiding damaging the surfaces of the parts due to scratches, scratches and the like, removing burrs and fins, completely cleaning sticky sand, oil, water, rust and other dirt within 20mm of the welding area and the periphery of a groove, riveting the surfaces of the parts in mutual contact, coating antirust paint with the thickness of 30-40 mu m before connection, sealing the lap joint edge by applying paint, putty or adhesive, coating black antirust paint on the inner wall of a box body, ensuring optical high absorption of 450-550 nm, and ensuring that the optical absorption rate is not lower than 95%.
3-the front porthole and the components are optical glass with high-transmittance film coating of optical signal wave band and peripheral components thereof, as shown in figure 2; the device mainly completes the injection of the tested optical communication equipment signal into the simulated seawater of the box body 2; the method is characterized in that the thickness T is not less than 10mm, the light-transmitting aperture is not less than phi 290mm, an optical plating antireflection film (450 nm-550 nm) has the transmittance of not less than 99%; surface type precision: PV is better than 1/2 λ @470nm (in any Φ 50mm region).
As shown in fig. 3 and 4, the movable partition plate 4 completes the partition of different distances 1, 2, 3.. 10m, and mainly comprises optical glass 8 (the optical characteristics of which are consistent with those of the front porthole 3), a sealing washer 9, a pressing ring 10, a water pipe 11, a partition plate 12, a handle 13, a bolt 14, a gasket 15 and the like. The optical glass 8 is fixed on the movable partition plate through bolts 14 and 15, a sealing gasket 9 is arranged between the optical glass and the movable partition plate, and a handle 13 and a water pipe 11 are further arranged on the movable partition plate
The main function and feature of the movable partition 4 is to realize channel length simulation at different distances together with the water tank 2, as shown in fig. 3.
The cover plate 5 and the simulated light source thereof complete the functions of simulating the illumination and ensuring the cleanness of the box body 2, and mainly comprise a cover plate handle 16, a simulated light source 12 and the like. The cover plate and the simulated light source thereof are mainly characterized in that the illuminance of 0-10000 lx can be simulated through switching and current regulation.
The illuminometer 6 completes the test of illuminance, and is mainly characterized in that the sensitivity is superior to 0.1 lx.
The rear porthole 7 and the components are optical glass with high-transmittance film coating of optical signal wave band and peripheral components thereof, and mainly complete the output of the tested optical communication equipment signal. The specific implementation method is consistent with the front porthole 3 and the components.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. The utility model provides an underwater wireless optical communication infield channel simulation device, includes the box, the box be the open cavity that holds in upper portion, its characterized in that: the opening above the box body is connected with a cover plate, a front panel of the box body is provided with a front porthole, a water pump and a water pipe connector of the water pump, a rear porthole is arranged on a rear panel, a movable partition plate is arranged between the front panel and the rear panel, and a light meter is arranged on one side panel of the box body.
2. The underwater wireless optical communication infield channel simulation device of claim 1, wherein: tap water is filled in the box body, and aluminum hydroxide and sea salt are added in the tap water.
3. The underwater wireless optical communication infield channel simulation device of claim 1, wherein: the front porthole is made of optical glass with a high-transmittance coating film in an optical signal wave band, and the signal of the tested optical communication equipment is injected into the box body.
4. The underwater wireless optical communication infield channel simulation device of claim 1, wherein: the water pump and the water pipe interface thereof complete the injection of different water flows, and the interface is provided with a valve for regulating the flow rate.
5. The underwater wireless optical communication infield channel simulation device of claim 1, wherein: the rear porthole is made of optical glass with a high-transmittance coating film in an optical signal wave band, and the signal output of the tested optical communication equipment is completed.
6. The underwater wireless optical communication infield channel simulation device of claim 1, wherein: the movable partition plate is provided with optical glass and a water pipe connector which are the same as the front porthole in height.
7. The underwater wireless optical communication infield channel simulation device of claim 1, wherein: the upper part of the movable partition board is also provided with a handle.
8. The underwater wireless optical communication infield channel simulation device of claim 1, wherein: and the cover plate is provided with a simulation light source for completing the illumination simulation.
9. The underwater wireless optical communication infield channel simulation device of claim 8, wherein: the simulation light source can simulate the illuminance of 0-10000 lx through switching and current regulation.
10. The underwater wireless optical communication infield channel simulation device of claim 1, wherein: the movable partition plate can finish the partition of different distances of 1, 2 and 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911205853.8A CN110868267A (en) | 2019-11-29 | 2019-11-29 | Underwater wireless optical communication infield channel simulation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911205853.8A CN110868267A (en) | 2019-11-29 | 2019-11-29 | Underwater wireless optical communication infield channel simulation device |
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| CN110868267A true CN110868267A (en) | 2020-03-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112235054A (en) * | 2020-10-15 | 2021-01-15 | 厦门大学 | Full-duplex underwater sound digital voice communication demonstration device and method thereof |
| CN113014327A (en) * | 2021-02-25 | 2021-06-22 | 深圳市思坦科技有限公司 | Underwater wireless optical communication testing device |
-
2019
- 2019-11-29 CN CN201911205853.8A patent/CN110868267A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112235054A (en) * | 2020-10-15 | 2021-01-15 | 厦门大学 | Full-duplex underwater sound digital voice communication demonstration device and method thereof |
| CN113014327A (en) * | 2021-02-25 | 2021-06-22 | 深圳市思坦科技有限公司 | Underwater wireless optical communication testing device |
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