CN113037379A - Big wide angle wireless optical communication subassembly under water based on fisheye lens - Google Patents
Big wide angle wireless optical communication subassembly under water based on fisheye lens Download PDFInfo
- Publication number
- CN113037379A CN113037379A CN202110209916.8A CN202110209916A CN113037379A CN 113037379 A CN113037379 A CN 113037379A CN 202110209916 A CN202110209916 A CN 202110209916A CN 113037379 A CN113037379 A CN 113037379A
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- Prior art keywords
- printed board
- optical communication
- outer shell
- fisheye lens
- wireless optical
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- 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.)
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- 238000004891 communication Methods 0.000 title claims abstract description 56
- 230000003287 optical effect Effects 0.000 title claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 12
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 239000004519 grease Substances 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 238000010295 mobile communication Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 21
- 238000005516 engineering process Methods 0.000 description 4
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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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
-
- 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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/502—LED transmitters
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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
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
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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
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
Abstract
The invention relates to an underwater large wide-angle wireless optical communication assembly based on a fisheye lens, which comprises an outer shell, the fisheye lens arranged at the front end of the outer shell, a support frame component arranged inside the outer shell, a rear cover fixed between the outer shell and the support frame component, and a deepwater wet plugging connector inserted on the rear cover; the support frame component comprises a support column, a printed board I is arranged on the outer side face of the support column, a printed board II is arranged at the front end of the support column, a transmitting element and/or a receiving element are arranged on the printed board II, and the transmitting element and/or the receiving element are sealed in the fisheye lens and the outer shell, so that the transmitting and the space detection receiving of the light source at the divergence angles of 90 degrees, 180 degrees and the like are realized. The invention overcomes the problems of small communication divergence angle and limited mobile communication range in the prior art, and does not need complex optical devices such as lenses and the like in the optical path, thereby simplifying the optical path structure and reducing the cost.
Description
Technical Field
The invention relates to the field of wireless optical communication, in particular to an underwater large-wide-angle wireless optical communication assembly based on a fisheye lens.
Background
Information such as massive data, videos and the like collected by various underwater equipment needs to be transmitted in real time at a high speed, at present, sonar is mainly adopted for underwater wireless communication, but the diversification of information forms is severely limited by the transmission speed of the sonar. As a novel communication technology, the underwater visible light communication has the advantages of large bandwidth, electromagnetic interference resistance, small size, low power consumption and the like, develops the research of the visible light communication technology, and has profound significance for increasing the innovation strength of ocean science and technology and promoting the ocean informatization system to be more digital, networked and intelligent. For example, the process of butting the underwater vehicle and the main body takes time even several hours, but the underwater visible light communication mode is adopted, the transmission data volume is large, the interconnection can be quickly established, and a redundant complex guide structure is not needed.
The existing underwater wireless optical communication product adopts quasi-parallel light point-to-point communication, but the product adopting the mode for communication has the following three problems: 1. point-to-point communication is difficult to align in an underwater complex environment, effective connection is difficult to establish in specific use, and practical value is not achieved; 2. the diameter of a point-to-point communication light beam is small, and communication interruption is easily caused by shielding of animals and plants or plankton in water; 3. the peer-to-peer communication system is very difficult to establish a connection between mobile terminals, and a complete and complicated automatic capture alignment system (ATP) is required, which causes additional expenses to the product volume and the development cost.
Disclosure of Invention
In order to overcome the defects, the underwater large wide-angle wireless optical communication assembly based on the fisheye lens is provided, the fisheye lens is adopted, the emission and the space detection of the divergence angles of 90 degrees, 180 degrees and the like of a light source can be realized, the product structure is simplified, the cost is reduced, the problems of small communication divergence angle and limited mobile communication range in the prior art are solved, complicated optical devices such as lenses and the like are not needed in an optical path, the optical path structure is simplified, and the cost is reduced.
The technical problem is solved by adopting the following technical scheme, and the underwater large wide-angle wireless optical communication assembly based on the fisheye lens comprises an outer shell, the fisheye lens arranged at the front end of the outer shell, a support frame component arranged in the outer shell, a rear cover fixed between the outer shell and the support frame component, and a deep water wet plugging connector inserted on the rear cover; the support frame component comprises a support column, a printed board I is arranged on the outer side face of the support column, a printed board II is arranged at the front end of the support column, a transmitting element and/or a receiving element are arranged on the printed board II, and the transmitting element and/or the receiving element are sealed in the fisheye lens and the outer shell, so that the transmitting and the space detection receiving of the light source at the divergence angles of 90 degrees, 180 degrees and the like are realized.
Furthermore, the optical communication assembly for unidirectional communication is divided into a transmitting assembly and a receiving assembly, a transmitting element is arranged on a printed board II of the transmitting assembly, and a receiving element is arranged on a printed board II of the receiving assembly.
Furthermore, a transmitting element and a receiving element are simultaneously arranged on a printed board II of the optical communication assembly for full-duplex communication, and the transmitting element and the receiving element are arranged in an inserting manner and are uniformly distributed on the printed board II.
Further, the emitting element can be an LED light source, and the number of the LED light sources is one or more.
Further, the receiving element can be a PIN detector, and the number of the PIN detectors is one or more.
Furthermore, the outer shell and the fisheye lens are sealed through an O-shaped sealing ring I and an O-shaped sealing ring II, the outer shell and the rear cover are sealed through an O-shaped sealing ring III and an O-shaped sealing ring IV, and the deep water wet plugging connector and the rear cover are sealed through an O-shaped sealing ring V.
Furthermore, the printed board I and the printed board II are integrally formed by a rigid-flexible combined board, the two adjacent printed boards I are connected by a flexible board, and the printed boards I and the printed boards II are also connected by the flexible board.
Furthermore, the joint of the support column and the printed board II and the joint of the support column and the rear cover are coated with heat-conducting silicone grease.
Compared with the prior art, the invention has the following advantages:
according to the invention, the LED light source array and/or the large-photosurface PIN detector are adopted, the LED light source array can realize the emission of the light source, the large-photosurface PIN photoelectric detector can realize the capture detection of weak light signals, and the shaping of a light path is not needed. The fisheye lens has the advantage of wide visual angle range, can realize the emission and the space detection of the divergence angles of the light source, such as 90 degrees, 180 degrees and the like, simplifies the product structure and reduces the cost. The invention can adopt a one-way communication layout structure, and the communication assembly is divided into a transmitting assembly and a receiving assembly to realize wireless communication. The LED light sources and the PIN detectors can be arranged on the same component at the same time, and the transmitting component and the receiving component adopt the same light path structure, so that the receiving-transmitting integrated full-duplex communication is realized. The invention overcomes the problems of small communication divergence angle and limited mobile communication range in the prior art, and does not need complex optical devices such as lenses and the like in the optical path, thereby simplifying the optical path structure and reducing the cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a support frame component of a one-way communication arrangement;
FIG. 3 is a left side view of FIG. 2;
FIG. 4 is a schematic view of a support frame assembly for full duplex communication;
fig. 5 is a schematic structural view of a printed board i and a printed board ii.
Element and symbol description: the device comprises a shell 1, a compression nut 2, a fisheye lens 3, a support frame part 4, a screw 5, a rear cover 6, a deep water wet plugging connector 7, a sealing ring 8-O, a sealing ring 9-O, a sealing ring 10-O, a sealing ring 11-O, a sealing ring 12-O, a sealing ring V13-supporting column, a printed board I14, a printed board II 15, an LED light source or PIN detector 16, an LED light source and PIN detector 17, and a flexible board 18.
Detailed Description
To further illustrate the technical means and technical effects adopted by the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention discloses an underwater large wide-angle wireless optical communication assembly based on a fisheye lens, which comprises an outer shell 1, the fisheye lens 3 fixed at the front end of the outer shell through a compression nut 2, a support frame component 4 arranged inside the outer shell, a rear cover 6 fixed with the outer shell through a screw 5, and a deep water wet plugging connector 7 inserted on the rear cover. The outer shell and the fisheye lens are sealed through a radial O-shaped sealing ring I8 and an end face O-shaped sealing ring II 9, and the outer shell and the rear cover are sealed through a radial O-shaped sealing ring III 10 and an end face O-shaped sealing ring IV 11. The deep water wet plugging connector and the rear cover are sealed through an end face O-shaped sealing ring V12.
1-4, the support frame part includes support column 13 that is tetrahedron structure, all is provided with printed board I14 on the three sides outside the support column, and the support column front end is provided with printed board II 15, is provided with LED light source and/or big photosurface PIN detector on the printed board II, and the quantity of LED light source, big photosurface PIN detector is one or more. As shown in fig. 1, the LED light source and/or the large photosurface PIN detector are sealed in the fisheye lens and the outer shell, so that the light source can emit at divergence angles of 90 degrees, 180 degrees and the like and can detect and receive at spaces of 90 degrees, 180 degrees and the like, and the large photosurface PIN photodetector can capture and detect weak light signals without shaping a light path.
As shown in fig. 2, the present invention may adopt a one-way communication layout structure, in which the underwater large-wide-angle wireless optical communication module is divided into a transmitting module and a receiving module. One or more LED light sources are arranged on a printed board II of the transmitting assembly and serve as transmitting ends, one or more large photosensitive surface PIN detectors are arranged on a printed board II of the receiving assembly and serve as receiving ends, the transmitting assembly and the receiving assembly are identical in other structures, the LED light sources can emit at divergence angles of 90 degrees, 180 degrees and the like underwater through the fisheye lens, and meanwhile, the PIN detectors can detect the spaces of 90 degrees, 180 degrees and the like underwater through the fisheye lens.
As shown in fig. 4, the present invention can also realize full-duplex communication by alternately arranging the LED light sources and the PIN detectors. The LED light source and the large photosensitive surface PIN detector can be arranged on the printed board II at the same time, the number of the LED light source and the large photosensitive surface PIN detector is one or more, each wireless optical communication component has a transceiving function at the same time, at the moment, the emitting component and the receiving component adopt the same structure, transceiving integrated full-duplex communication of the underwater large wide-angle wireless optical communication component can be realized, divergence angle emission and space detection of the light source at 90 degrees, 180 degrees and the like are realized through the fisheye lens, the problems of small communication divergence angle and limited mobile communication range in the prior art are solved, and complicated optical devices such as lenses are not needed in the optical path, the optical path structure is simplified, and the cost is reduced.
Further, the LED light source and the PIN detector are soldered on the printed board ii, and the transmitting element and the receiving element used in the present invention may be the LED light source and the PIN detector with large photosensitive surface, respectively, but the present invention is not limited to the above two types, and the description should not be construed as limiting the present invention.
Further, the printed board i and the printed board ii may be fixed to the side surface of the support post and the front end of the support post by screws, respectively, as shown in fig. 2.
Further, as shown in fig. 5, the printed boards i and ii can be integrally formed by rigid-flexible boards, two adjacent printed boards i are connected by a Flexible Printed Circuit (FPC)18, and the printed boards i and ii are also connected by a Flexible Printed Circuit (FPC), so that the reliability of the circuit system can be improved.
According to the invention, the LED light source array and the PIN detector array are sealed in the fisheye lens and the outer shell, the LED light source array and/or the PIN detector array are distributed at the front end of the supporting column, and the fisheye lens can be used for enabling the light source to transmit and receive and detect so as to realize space communication of 90 degrees, 180 degrees and the like. The high-heat-generation devices such as the LED light source, the PIN detector, the power management chip, the power diode and the like are used for conducting heat out through the printed board radiating pad, and in order to improve the radiating efficiency, heat-conducting silicone grease can be smeared at the joint of the front end of the supporting column and the printed board II and the joint of the supporting column and the rear cover. In a watertight structure, the LED light source and the PIN detector are packaged inside the outer shell through the O-shaped sealing ring I, the O-shaped sealing ring II, the O-shaped sealing ring III, the O-shaped sealing ring IV and the O-shaped sealing ring V, and underwater wireless optical communication is achieved. On the external interface, a deepwater wet plugging connector assembly is adopted to lead out an internal power supply and a data signal, so that physical connection with an external device is conveniently established. The fish-eye lens adopts quartz, sapphire and other materials with high light transmittance and high strength as the channel light window. The integral structure design of the invention can resist water pressure of more than 50MPa through measurement and calculation, and can meet higher pressure resistance indexes according to different materials and wall thicknesses.
The invention is mainly applied to terminal active equipment such as an underwater detector, an underwater unmanned robot, an underwater observation station and the like. By utilizing the visible light communication technology to carry out underwater wireless data transmission, the requirement of underwater high-speed communication development can be met. In practical operation, firstly, the invention is connected with the terminal by using an external cable, and the invention extends out of the terminal through the cabin penetration hole. The deep water wet plug connector can be connected with the printed board I to realize signal transmission after being inserted in place, the printed board I transmits an electric signal input by peripheral equipment to an LED light source on the printed board II through a corresponding Flexible Printed Circuit (FPC), the electric signal is transmitted out through electro-optical conversion, meanwhile, the optical signal incident on the detector is transmitted to the printed board I through the corresponding Flexible Printed Circuit (FPC) after photoelectric conversion, amplification and filtering, and the electric signal on the printed board II is transmitted to the peripheral equipment through the deep water wet plug connector.
The above description is only an embodiment of the present invention, and is not intended to limit the present invention in any way, and the present invention may also have other embodiments according to the above structures and functions, and is not listed again. Therefore, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention by those skilled in the art can be made within the technical scope of the present invention.
Claims (8)
1. An underwater large wide-angle wireless optical communication assembly based on a fisheye lens is characterized by comprising an outer shell, the fisheye lens arranged at the front end of the outer shell, a support frame component arranged inside the outer shell, a rear cover fixed between the outer shell and the support frame component, and a deepwater wet plugging connector plugged on the rear cover; the support frame component comprises a support column, a printed board I is arranged on the outer side face of the support column, a printed board II is arranged at the front end of the support column, a transmitting element and/or a receiving element are arranged on the printed board II, and the transmitting element and/or the receiving element are sealed in the fisheye lens and the outer shell, so that the transmitting and the space detection receiving of the light source at the divergence angles of 90 degrees, 180 degrees and the like are realized.
2. The underwater large wide-angle wireless optical communication module as claimed in claim 1, wherein the optical communication module for one-way communication is divided into a transmitting module and a receiving module, the printed board ii of the transmitting module is provided with a transmitting element, and the printed board ii of the receiving module is provided with a receiving element.
3. The underwater large-wide-angle wireless optical communication module of claim 1, wherein the printed board II of the optical communication module for full-duplex communication is simultaneously provided with transmitting elements and receiving elements, and the transmitting elements and the receiving elements are alternately arranged and uniformly distributed on the printed board II.
4. An underwater large-wide-angle wireless optical communication module as claimed in any one of claims 1 to 3, wherein the emitting element is an LED light source, and the number of the LED light sources is one or more.
5. An underwater large-wide-angle wireless optical communication module as claimed in any one of claims 1 to 3, wherein the receiving element is a PIN detector, and the number of PIN detectors is one or more.
6. The underwater large wide-angle wireless optical communication assembly of claim 1, wherein the outer housing and the fisheye lens are sealed by an O-ring seal i and an O-ring seal ii, the outer housing and the rear cover are sealed by an O-ring seal iii and an O-ring seal iv, and the deep-water wet pluggable connector and the rear cover are sealed by an O-ring seal v.
7. The underwater large wide-angle wireless optical communication assembly of claim 1, wherein the printed boards i and ii are integrally formed by rigid-flexible boards, two adjacent printed boards i are connected by flexible boards, and the printed boards i and ii are connected by flexible boards.
8. The underwater large wide-angle wireless optical communication assembly of claim 1, wherein the joints of the supporting columns and the printed board ii and the joints of the supporting columns and the rear cover are coated with heat-conducting silicone grease.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110209916.8A CN113037379A (en) | 2021-02-24 | 2021-02-24 | Big wide angle wireless optical communication subassembly under water based on fisheye lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110209916.8A CN113037379A (en) | 2021-02-24 | 2021-02-24 | Big wide angle wireless optical communication subassembly under water based on fisheye lens |
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| Publication Number | Publication Date |
|---|---|
| CN113037379A true CN113037379A (en) | 2021-06-25 |
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ID=76461529
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110209916.8A Pending CN113037379A (en) | 2021-02-24 | 2021-02-24 | Big wide angle wireless optical communication subassembly under water based on fisheye lens |
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| Country | Link |
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| CN (1) | CN113037379A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004038962A1 (en) * | 2002-10-24 | 2004-05-06 | Nakagawa Laboratories, Inc. | Illumination light communication device |
| US20090269074A1 (en) * | 2006-11-07 | 2009-10-29 | Elta Systems Ltd. | System for Free Space Optical Communication and Method for Operation Thereof |
| WO2011026233A1 (en) * | 2009-09-03 | 2011-03-10 | Penguin Automated Systems Inc. | Optical communication device, system and method |
| CN103346843A (en) * | 2013-07-19 | 2013-10-09 | 北京大学 | Optical signal receiving system based on super-wide view field camera lens and array detecting structure |
| CN105629439A (en) * | 2016-01-19 | 2016-06-01 | 北京大学 | Lens assembly used for wireless optical communication receiving |
| CN106464360A (en) * | 2014-05-31 | 2017-02-22 | 思科技术公司 | Control system for multi-beam free space optical endpoint |
| CN109802264A (en) * | 2019-01-21 | 2019-05-24 | 浙江大学 | A kind of contactless wet plug-in connector of photoelectricity mixing two-way communication |
-
2021
- 2021-02-24 CN CN202110209916.8A patent/CN113037379A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004038962A1 (en) * | 2002-10-24 | 2004-05-06 | Nakagawa Laboratories, Inc. | Illumination light communication device |
| US20090269074A1 (en) * | 2006-11-07 | 2009-10-29 | Elta Systems Ltd. | System for Free Space Optical Communication and Method for Operation Thereof |
| WO2011026233A1 (en) * | 2009-09-03 | 2011-03-10 | Penguin Automated Systems Inc. | Optical communication device, system and method |
| CN103346843A (en) * | 2013-07-19 | 2013-10-09 | 北京大学 | Optical signal receiving system based on super-wide view field camera lens and array detecting structure |
| CN106464360A (en) * | 2014-05-31 | 2017-02-22 | 思科技术公司 | Control system for multi-beam free space optical endpoint |
| CN105629439A (en) * | 2016-01-19 | 2016-06-01 | 北京大学 | Lens assembly used for wireless optical communication receiving |
| CN109802264A (en) * | 2019-01-21 | 2019-05-24 | 浙江大学 | A kind of contactless wet plug-in connector of photoelectricity mixing two-way communication |
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Application publication date: 20210625 |
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