CN218679082U

CN218679082U - Omnidirectional underwater wireless optical communication device

Info

Publication number: CN218679082U
Application number: CN202222077101.1U
Authority: CN
Inventors: 徐钰锟; 杨祎; 贺锋涛; 王荀
Original assignee: Xian University of Posts and Telecommunications
Current assignee: Xian University of Posts and Telecommunications
Priority date: 2022-08-09
Filing date: 2022-08-09
Publication date: 2023-03-21
Anticipated expiration: 2032-08-09

Abstract

The utility model belongs to the technical field of omnidirectional underwater wireless optical communication, and discloses an omnidirectional underwater wireless optical communication device.A supporting heat dissipation frame is fixed in a shell and is divided into a driving launching frame, a detecting receiving frame and a heat dissipation extension frame, and the driving launching frame, the detecting receiving frame and the heat dissipation extension frame are connected through mechanical close fit; an optical window is fixed on the surface of the shell, two circles of optical windows are arranged on the optical window, and a sealing device is arranged on the optical window. The optical window is provided with two circles, 6 circles and 12 circles in total, the optical window is provided with a glass window, the glass window is fixed between the shell and the fixing ring, the lower end of the glass window is provided with a circle of O-shaped rubber sealing ring, the cross section of the sealing ring is circular, the rubber sealing ring is fixed in an O-shaped rubber fixing groove, and the O-shaped rubber fixing groove is arranged on the shell. The integrated communication structure has the advantages of good sealing performance, strong heat dissipation capability, safety, reliability, compactness, suitability for carrying, and very convenient manufacture, maintenance and repair.

Description

Omnidirectional underwater wireless optical communication device

Technical Field

The utility model belongs to the technical field of the underwater wireless optical communication of qxcomm technology, especially, relate to an underwater wireless optical communication device of qxcomm technology.

Background

At present, the underwater wireless optical communication technology is an important means and technology for human beings to recognize the ocean and develop and utilize the ocean, has the advantages of no contact, high speed, good confidentiality and the like, and can ensure the normal operation of underwater operation equipment, particularly electrical equipment by ensuring good sealing property.

The biggest application problem in the prior art is the problem of light path alignment among optical communication devices, the underwater operation environment is relatively complex, and the conventional technology can ensure normal communication among the devices only under the condition of specific interactive field angle. Although the divergence angle of the LED emitting light source used by the general communication device is large, the communication coverage area is still limited. And as the visible light is greatly attenuated by seawater, a high-power light source system with a small divergence angle is needed for underwater long-distance communication, and the actual operation difficulty is undoubtedly improved. Therefore, a single LED is difficult to satisfy practical underwater applications, and an array high-power emitting device is needed, which enables light signals to be transmitted far and has a wide light source coverage area.

Through the above analysis, the problems and defects of the prior art are as follows: the existing device is difficult to realize the accuracy of the light path because the optical windows are less, and the existing device is difficult to realize underwater operation because the optical windows are less due to the problem of sealing property, and the light path coverage is limited.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides an omnidirectional is wireless light communication device under water.

The utility model discloses a realize like this, an omnidirectional is wireless optical communication device under water is equipped with:

a housing;

a supporting heat dissipation frame is fixed in the shell and is divided into a driving launching frame, a detecting receiving frame and a heat dissipation extension frame, the driving launching frame, the detecting receiving frame and the heat dissipation extension frame are in clearance fit, the clearance is smaller than 1mm, heat-conducting silicone grease is coated in the clearance, and then the driving launching frame, the detecting receiving frame and the heat dissipation extension frame are fixedly connected through screws;

an optical window is fixed on the surface of the shell, two circles of optical windows are arranged on the optical window, and a sealing device is arranged on the optical window.

Further, optical window is equipped with two circles, 6 fans of round, 12 fans in total, optical window is equipped with the glass window, the glass window is fixed between shell and solid fixed ring, the glass window lower extreme is equipped with round O type rubber seal, the sealing washer cross-section is circular, rubber seal fixes in O type rubber fixed slot, O type rubber fixed slot sets up on the shell.

Furthermore, a cabin cover is fixed on the end face of the shell and fixedly connected with the shell through a flange ring, the flange ring is provided with an O-shaped sealing groove, an O-shaped sealing gasket is fixed inside the O-shaped sealing groove, and the cabin cover fixedly connects the flange ring with the shell through screws.

Further, the drive launching frame is six-sided column with survey the receiving bay, drive launching frame and survey the receiving bay fixed surface have the circuit board, the circuit board is connected with high-power drive filter core, high-power drive filter core is fixed with lamination heat dissipation potsherd, lamination heat dissipation potsherd is from last to being equipped with potsherd, heat conduction silica gel, driver chip, potsherd base plate in proper order down, through the screw with the superiors potsherd and base plate fixed connection, driver chip one side is fixed with dirver circuit board.

Further, the inside heat dissipation base that is fixed with the aluminum alloy material of optical window, the heat dissipation base is fixed on the drive emission frame through the pin, be fixed with central heat dissipation post in the middle of the heat dissipation base, central heat dissipation post upper end is filled with heat conduction silicone grease, heat conduction silicone grease upper end is fixed with the light source.

Further, the optical window is divided into an emitting optical window and a receiving optical window, and the emitting optical window is arranged at the rear end of the receiving optical window.

The sealed shell is provided with a light-transmitting optical window, the optical window is sealed by tempered pressure-resistant glass, and the tempered pressure-resistant glass with high strength and high transmittance plays a role in sealing the window and does not influence the sending and receiving of optical signals.

The optical window has 12 circuit boards with transmitting and receiving functions, so the designed shell also has 12 optical windows,

six optical windows are laid for one circle, and the total number of the optical windows is two. Because the divergence angle is about 60 degrees after the optical lens is added at the transmitting end of the system, and the detection area of the detection receiving end is as high as 180 degrees without considering the depth of the optical window, the following only gives 5 meters of light source at the transmitting end of the divergence angle of 60 degrees penetrating through the optical window, and in actual conditions, the light source divergence is influenced by phenomena such as scattering refraction and the like, so that the omnidirectional coverage is realized.

The glass window is arranged between the pressure-resistant shell main body and the fixing ring, the lower end of the glass is also provided with a circle of O-shaped rubber sealing ring, the cross section of the O-shaped rubber sealing ring is circular, and the O-shaped sealing ring is extruded and generated in the annular groove along with the screwing of the fixing screw.

The initial contact stress, the O-shaped ring always has the tendency of recovering the original shape after being extruded and deformed, and the tendency is increased along with the gradual screwing of the fixing ring, so that the contact pressure of the O-shaped ring and the glass window is higher, and the sealing is realized when the contact pressure is higher than the external water pressure. Such design is simple reliable, and convenient the dismantlement. After the glass window is fixed, the glass window does not move relative to the contact surface, and the sealing mode belongs to static sealing.

The seal of the shell consists of a flange ring, a hatch cover, a fixing screw and lubricating grease. Wherein the flange ring is in tight clearance fit with the inner wall of the shell, the clearance is less than 1mm, and lubricating grease is coated in the clearance. The flange ring is provided with three sealing grooves for mounting O-shaped rubber sealing rings. The two layers of sealing rings close to the inner wall are used for extruding with the inner wall to generate deformation and provide required contact stress for sealing, the sealing ring at the top is used for extruding with the hatch cover to provide a sealing condition, and a proper amount of lubricating grease is coated in each sealing groove to reduce the mounting difficulty and improve the sealing property. The side of sealed shell is equipped with 8 fixed screw holes, and the fixed screw passes cabin cover, flange ring, tightens in sealed shell's screw hole, further provides more contact stress, strengthens the leakproofness. The design considers the tightness of the whole device and provides a convenient operation environment for debugging and installing internal equipment.

The material selection and the structural scheme of the frame in the sealed shell are designed, and the aluminum alloy with lower density and better heat conductivity is selected as the material for manufacturing the internal supporting heat dissipation frame. The internal supporting heat dissipation frame is divided into a driving launching frame, a detecting receiving frame and a heat dissipation extension frame. Because the repeated debugging of the circuit board and the debugging of the optical antenna are required to be carried out in the inner part, the whole inner support is convenient to disassemble and cannot be made into an integral structure. According to the requirement, the connection modes corresponding to the three main parts are in clearance fit, the clearance is less than 1mm, and the heat conduction efficiency of the connection positions is enhanced by coating heat conduction silicone grease on the joint positions. The drive launching cradle is six posts with survey the receiving rack, can lay 12 pieces of circuit boards altogether, and the FPGA function board can be erect to the space that the centre was reserved to all be equipped with the several through-hole in each heat dissipation extension frame, make things convenient for laying of cable, signal line in inside, the part that the heat dissipation extension frame extends is for increasing the area of contact of inner structure and shell main part, with inside heat conduction to shell, the outside water of rethread shell carries out water-cooling heat dissipation.

The high-power driving chip can generate larger heat to influence the driving performance, the laminated heat dissipation ceramic chip is adopted to enlarge the contact surface area of the chip, the heat emitted by the chip is transmitted to the bottom substrate more quickly, and the heat conduction efficiency of the chip is improved.

The light source produces great heat, influences LED optical characteristic and changes, leads to the problem that modulation performance reduces, adopts aluminum alloy system radiating seat to make the heat that LED produced conduct to the base plate fast, wherein uses heat conduction silicone grease to promote heat transfer rate between light source and the radiating seat, and the aluminum alloy radiating column purpose at center is in order to increase the area of contact of light source and base plate, further promotes heat dispersion.

With the above technical solution and the technical problem solved, please analyze the following aspects and advantages of the technical solution to be protected of the present invention are:

first, to the technical problem that above-mentioned prior art exists and the degree of difficulty of solving this problem, combine closely the utility model discloses an in-process result and data etc. of technical scheme and the research and development that will protect, analyze in detail, deeply the utility model discloses how technical scheme solves's technical problem, some that bring after the solution problem possess creative technological effect. The specific description is as follows:

the embodiment of the utility model provides an omnidirectional underwater wireless optical communication device, through the normal transmission of the optical antenna array that will need a plurality of optical glass windows assurance system and receive optical signal, consequently need consider the leakproofness influence of optical glass window to optical antenna and whole system shell. Moreover, the thermal characteristics of the high-power LED light source and the high-power driving chip in the system play a crucial role in the service life and stability of the system, and an integrated heat dissipation technology and an underwater sealing packaging technology need to be researched on the basis of comprehensively considering the heat dissipation of the high-power LED light source and the heat dissipation of the high-power driving chip, so that the normal work of the system and the maximum performance of the system performance are ensured.

The underwater omnidirectional communication system integrates a 360-degree hub type high-power light source array, a 360-degree hub type high-sensitivity detection receiving array and a corresponding optical antenna array, integrates transceiving, has excellent performance, solves the problems of internal heat dissipation, optical array structure, underwater pressure-resistant sealing and the like, and realizes underwater omnidirectional communication. The utility model discloses the internal arrangement is highly integrated, and heat dispersion is good, possess the watertight connector interface of standard, and the device shell has the whole line of qxcomm technology optical window, and whole waterproof sealing pressure resistance is superior, and adaptation underwater operation environment that can be good provides the communication ability of qxcomm technology.

The underwater omnidirectional communication system integrates a 360-degree hub type high-power light source array, a 360-degree hub type high-sensitivity detection receiving array and a corresponding optical antenna array, integrates receiving and transmitting, has excellent performance, solves the problems of internal heat dissipation, an optical array structure, underwater pressure-resistant sealing and the like, and realizes underwater omnidirectional communication. The utility model discloses the internal arrangement is highly integrated, and heat dispersion is good, possess the watertight connector interface of standard, and the device shell has the whole line of qxcomm technology optical window, and whole waterproof sealing pressure resistance is superior, and adaptation underwater operation environment that can be good provides the communication ability of qxcomm technology.

Second, regard as a whole or from the angle of product to technical scheme, the utility model discloses technical effect and advantage that technical scheme that will protect possesses, the concrete description is as follows:

the embodiment of the utility model provides an omnidirectional is wireless optical communication device under water has that the leakproofness is good, the heat-sinking capability is strong, safe and reliable, compact, be fit for the integrated communication structure who carries on, its convenience of making, maintenance all ten minutes.

Second, the embodiment of the utility model provides an integrative integrated device is received and dispatched in wireless optical communication under water to qxcomm technology, the device's optical emission part is equipped with 6 way adjustable angle's the high-power light source emission module of array. The array structure is regular hexagon, each vertex is provided with a device, six paths form a circular distribution with equal space, and 360-degree omnidirectional optical signal coverage can be realized by the simultaneous output of the six paths. Each path of the LED lamp is composed of a driving circuit, a light source and a light source heat dissipation base with an adjustable optical lens, the driving circuit has a DA control function, the electric power can reach 25W at most, the current is 0.9A when a preset parameter supplies 24V voltage, the divergence angle of the light source of each path is adjustable from 30 degrees to 120 degrees, and the preset value is 60 degrees. The detection receiving part of the device can be provided with 3-6 paths of high-sensitivity detection receiving modules, the array structure of the detection receiving module is a regular hexagon, and the specific laying condition can be flexibly changed according to the actual condition to achieve the technical effect of 360-degree omnidirectional detection receiving. Each path of the device is respectively composed of an optical lens seat with adjustable focal length, a PMT and a corresponding peripheral circuit, standard differential signals are output, the sensitivity of the device can reach-50 dBm, the detection field angle is larger than 180 degrees when the device is used alone, the detection field angle is about 120 degrees when the device is actually assembled and used, and the device with the minimum 3 paths of theoretical data display can achieve full field angle receiving. The utility model has an attenuation coefficient of 0.056 _m ^-1 The communication distance in the pure seawater can reach 30 meters, and the attenuation coefficient is 0.151 _m ^-1 The communication distance in the clear seawater can reach 20 meters, and the attenuation coefficient is 0.398 _m ^-1 The communication distance in the turbid seawater can reach 10 meters. The data of the underwater testing experiments which have been carried out are shown in the following table 1:

TABLE 1

Transmission distance	Receiver state	Quality of communication
			26.3m	Angle of view of 120 °	Video communication stabilization
26.3m	Swing at will	Video communication stabilization

The utility model discloses an optical communication link that practical founds is stable, and light signal coverage area is wide, need not the strict alignment between the underwater communication equipment and can communicate. The device has the advantages of high communication rate, wide optical signal coverage area, high integration, good sealing performance, strong heat dissipation capability and the like. The device has a safe, reliable and compact integrated structure, is convenient to carry, and is very convenient to manufacture, maintain and maintain.

Drawings

Fig. 1 is a schematic structural diagram of an omnidirectional underwater wireless optical communication device provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a housing provided by an embodiment of the present invention;

fig. 3 is a schematic view illustrating the divergent coverage of a light source according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an optical window provided in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an end face of a housing according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a supporting heat dissipation frame according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a high-power driving chip provided in an embodiment of the present invention;

fig. 8 is a schematic structural view of a heat sink according to an embodiment of the present invention;

in the figure: 1. a housing; 2. receiving an optical window; 3. a flange ring; 4. a hatch cover; 5. supporting a heat dissipation frame; 6. an emission optical window; 7. an optical window; 8. a fixing ring; 9. an O-shaped rubber fixing groove; 10. an O-shaped rubber sealing ring; 11. a heat dissipation extension frame; 12. driving the launcher; 13. a probe receiving rack; 14. a ceramic plate; 15. a driving chip; 16. a substrate; 17. a drive circuit board; 18. a light source; 19. a central heat-dissipating stud; 20. a heat dissipation base; 21. and (3) heat-conducting silicone grease.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

1. Illustrative embodiments are explained. This section is an explanatory embodiment for expanding the technical solutions of the claims so as to make those skilled in the art fully understand how to implement the present invention.

As shown in fig. 1-3, the embodiment of the present invention provides an omnidirectional underwater wireless optical communication device, which is provided with: the device comprises a shell 1, a receiving optical window 2, a flange ring 3, a hatch cover 4, a supporting heat dissipation frame 5, an emitting optical window 6, an optical window 7, a fixing ring 8, an O-shaped rubber fixing groove 9, an O-shaped rubber sealing ring 10, a heat dissipation extension frame 11, a driving emission frame 12, a detection receiving frame 13, a ceramic chip 14, a driving chip 15, a substrate 16, a driving circuit board 17, a light source 18, a central heat dissipation column 19, a heat dissipation seat 20 and heat conduction silicone grease 21.

1 inside is fixed with the support heat dissipation frame of shell, and the support heat dissipation frame divide into drive launcher 12, surveys receiving bay 13, the 11 triplex of heat dissipation extension frame, drive launcher, survey receiving bay and heat dissipation extension frame are clearance fit, and the clearance is less than 1 millimeter to be scribbled heat conduction silicone grease in the clearance, the rethread screw carries out fixed connection.

The driving launcher 12, the detection receiving frame 13 and the heat dissipation extension frame 11 are connected through mechanical tight fit;

an optical window 7 is fixed on the surface of the shell 1, two circles of optical windows 7 are arranged, and a sealing device is arranged on each optical window 7.

The optical window 7 is provided with two circles, 6 circles and 12 circles in total, the optical window 7 is provided with a glass window, the glass window is fixed between the shell 1 and the fixing ring 8, the lower end of the glass window is provided with a circle of O-shaped rubber sealing ring 10, the cross section of the sealing ring is circular, the rubber sealing ring is fixed in an O-shaped rubber fixing groove 9, and the O-shaped rubber fixing groove 9 is arranged on the shell 1.

The end face of the shell 1 is fixedly provided with a cabin cover 4, the cabin cover 4 is fixedly connected with the shell 1 through a flange ring 3, the flange ring 3 is provided with an O-shaped sealing groove, an O-shaped sealing gasket is fixedly arranged in the O-shaped sealing groove, and the cabin cover 4 fixedly connects the flange ring 3 with the shell 1 through screws.

The driving launcher 12 and the detection receiving rack 13 are hexagonal columns, circuit boards are fixed on the surfaces of the driving launcher 12 and the detection receiving rack 13, the circuit boards are connected with high-power driving filter cores, laminated heat dissipation ceramic sheets 14 are fixed on the high-power driving filter cores, the laminated heat dissipation ceramic sheets 14 are sequentially provided with the ceramic sheets 14, heat conduction silica gel, driving chips 15 and ceramic sheet 14 substrates 16 from top to bottom, the uppermost ceramic sheet 14 is fixedly connected with the substrates 16 through screws, and a driving circuit board 17 is fixed on one side of the driving chip 15.

The optical window 7 is internally fixed with a heat dissipation base made of an aluminum alloy material, the heat dissipation base is fixed on the substrate 16 through a pin, a central heat dissipation column 19 is fixed in the middle of the heat dissipation base, the upper end of the central heat dissipation column 19 is filled with heat conduction silicone grease 21, and the upper end of the heat conduction silicone grease 21 is fixed with a light source 18.

The base is a shell 1, the optical window 7 is divided into an emitting optical window 6 and a receiving optical window 2, and the emitting optical window 6 is arranged at the rear end of the receiving optical window 2.

The embodiment of the utility model provides an omnidirectional underwater wireless optical communication device is when using, at first with the drive launching rack 12 of the inside support heat dissipation frame 5 of shell 1, survey receiving rack 13 and heat dissipation extension frame 11 through mechanical tight fit fixed connection, later through the light source 18 transmission sensing light of the inside of transmission optical window 6 on the drive launching rack 12, receive the signal of reflection through the receiving element of 2 inside of receiving optical window, accomplish and detect. Since the high power light source 18 is provided, a heat sink 20 is fixed to the outside of the light source 18, and heat is transferred to the center heat-radiating column 19 through the heat-conductive silicone grease 21 inside the heat sink 20 and is radiated through the center heat-radiating column 19.

2. Application examples. In order to prove the creativity and the technical value of the technical scheme of the invention, the part is the application example of the technical scheme of the claims on specific products or related technologies.

The embodiment of the utility model provides an omnidirectional underwater wireless optical communication device is used in underwater wireless communication.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships that are based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.

Claims

1. An underwater wireless optical omnidirectional communication device, characterized in that it is provided with:

a housing;

a supporting heat dissipation frame is fixed in the shell and comprises a driving launching frame, a detecting receiving frame and a heat dissipation extension frame, wherein the driving launching frame, the detecting receiving frame and the heat dissipation extension frame are in clearance fit, heat-conducting silicone grease is coated in the clearance, and the driving launching frame, the detecting receiving frame and the heat dissipation extension frame are fixedly connected through screws;

2. The omnidirectional underwater wireless optical communication device according to claim 1, wherein the optical window has two turns, one turn of 6 turns, for a total of 12 turns, the optical window has a glass window fixed between the housing and the fixing ring, the lower end of the glass window has a turn of O-ring rubber seal, the cross-section of the seal is circular, the rubber seal is fixed in the O-ring rubber fixing groove, and the O-ring rubber fixing groove is provided on the housing.

3. The omnidirectional underwater wireless optical communication device according to claim 1, wherein a hatch is fixed to an end surface of the housing, the hatch is fixedly connected to the housing through a flange ring, the flange ring is provided with an O-shaped sealing groove, an O-shaped sealing gasket is fixed to an inside of the O-shaped sealing groove, and the hatch fixedly connects the flange ring to the housing through a screw.

4. The omnidirectional underwater wireless optical communication device according to claim 1, wherein the driving launcher and the detecting receiving rack are hexagonal columns, the driving launcher and the detecting receiving rack have circuit boards fixed on their surfaces, the circuit board is connected with a high-power driving filter element, the high-power driving filter element is fixed with a laminated heat-dissipating ceramic sheet, the laminated heat-dissipating ceramic sheet is sequentially provided with a ceramic sheet, a heat-conducting silica gel, a driving chip, and a ceramic sheet substrate from top to bottom, the ceramic sheet on the uppermost layer is fixedly connected with the substrate by screws, and a driving circuit board is fixed on one side of the driving chip.

5. The omnidirectional underwater wireless optical communication device according to claim 1, wherein a heat dissipation base made of an aluminum alloy material is fixed inside the optical window, the heat dissipation base is fixed on the substrate by a pin, a central heat dissipation column is fixed in the middle of the heat dissipation base, a heat conductive silicone grease is filled at an upper end of the central heat dissipation column, and a light source is fixed at an upper end of the heat conductive silicone grease.

6. The omnidirectional underwater wireless optical communication device of claim 1, wherein the optical window is divided into a transmitting optical window and a receiving optical window, the transmitting optical window being disposed at a rear end of the receiving optical window; the base is a shell.