CN211046937U - Light-weight long-distance underwater L ED wireless optical communication transmission system - Google Patents
Light-weight long-distance underwater L ED wireless optical communication transmission system Download PDFInfo
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- CN211046937U CN211046937U CN201921600072.4U CN201921600072U CN211046937U CN 211046937 U CN211046937 U CN 211046937U CN 201921600072 U CN201921600072 U CN 201921600072U CN 211046937 U CN211046937 U CN 211046937U
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Abstract
The utility model provides a light-weighted long distance's L ED wireless optical communication transmission system under water, the transmitting terminal includes data acquisition module, transmitting terminal electro-optical conversion module, transmitting terminal transmission optical fiber, the transmitting terminal that has watertight mechanical structure, including transmitting terminal photoelectric conversion module, transmitting terminal digital signal processing module, digital analog conversion module, amplifier, L ED array, direct current offset module, transmitting terminal lens subassembly, the receiving terminal that is used for receiving the optical signal of transmitting terminal transmission, including the receiving terminal that has watertight mechanical structure, set up under water, including receiving terminal lens subassembly, the detector, transimpedance amplifier, balanced and filtering module, analog-to-digital conversion module, receiving terminal digital signal processing module, receiving terminal electro-optical conversion module, receiving terminal transmission optical fiber, receiving terminal photoelectric conversion module, data recovery module.
Description
Technical Field
The utility model relates to an underwater communication system especially relates to a light-weighted long distance L ED wireless optical communication transmission system under water.
Background
72% of the earth surface is covered by the ocean, with the deep development of ocean resources, the communication between human beings and the ocean is increasingly frequent, and more underwater detection equipment, monitoring platforms and sensors are put into use, so that the support of a high-speed wireless communication technology is urgently needed. However, the existing wireless communication technology cannot be applied to long-distance marine communication due to the skin effect of the sea. Although the loss in seawater is small, the side lobe is large during transmission, the directional directivity is not strong, the communication rate is low, the security is poor, and the requirement of increasing information transmission amount in underwater application is difficult to meet. In addition, the acoustic wave communication is also affected by the marine environment, and the background noise is large, so that the quality of signal transmission is reduced. Therefore, a high-speed communication technology with a medium distance is urgently needed as a supplementary means.
In addition, with the continuous development of the technology, L ED cost suitable for submarine transmission is reduced, luminous efficiency is improved, large divergence angle transmission and large visual field receiving of a receiving end are transmitted, difficulty of system design is greatly reduced, in addition, the underwater L ED wireless optical communication transmission system is easy to be butted with various communication methods used at present, underwater environment adaptability is good, expansion and upgrading are convenient, confidentiality is strong, communication speed is high, the underwater L ED wireless optical communication transmission system is particularly suitable for interconnection of various sensors in deep sea, data collection and connection between a water surface platform and underwater equipment, and has a very wide application prospect.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned problem that exists among the prior art, provide an avoid electromagnetic interference's lightweight long distance L ED wireless optical communication transmission system under water.
In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a realize through following technical scheme:
a lightweight long-haul underwater L ED wireless optical communication transmission system, comprising:
a transmitting end for transmitting an optical signal, the transmitting end comprising:
the data acquisition module is used for acquiring data to be transmitted;
the input end of the transmitting end electro-optical conversion module is connected with the output end of the data acquisition module;
the input end of the transmitting end transmission optical fiber is connected with the output end of the transmitting end electro-optic conversion module;
launch end with watertight mechanical structure sets up under water, includes:
the input end of the transmitting end photoelectric conversion module is connected with the output end of the transmitting end transmission optical fiber;
the input end of the transmitting end digital signal processing module is connected with the output end of the transmitting end photoelectric conversion module;
the input end of the digital-to-analog conversion module is connected with the output end of the transmitting end digital signal processing module;
the input end of the amplifier is connected with the output end of the digital-to-analog conversion module;
l ED array, the signal input end is connected with the amplifier output end, used for transmitting the optical signal with modulation code signal;
a DC bias module electrically connected to the L ED array for providing operating power to the L ED array and for acting on the L ED array to emit optical signals along with the signal output by the amplifier;
an emission end lens assembly for conducting the optical signals emitted by the L ED array into a transmission medium;
the receiving end is used for receiving the optical signal transmitted by the transmitting end and comprises:
receiving terminal with watertight mechanical structure sets up under water, includes:
the receiving end lens assembly is used for allowing the optical signal sent by the transmitting end to pass and converging the received optical signal;
the detector is used for detecting the signal light transmitted by the receiving end lens assembly;
the input end of the transimpedance amplifier is connected with the output end of the detector;
the input end of the equalizing and filtering module is connected with the output end of the transimpedance amplifier;
the input end of the analog-to-digital conversion module is connected with the output end of the equalization and filtering module;
the input end of the receiving end digital signal processing module is connected with the output end of the analog-to-digital conversion module;
the input end of the receiving end electro-optical conversion module is connected with the output end of the receiving end digital signal processing module;
the input end of the receiving end transmission optical fiber is connected with the output end of the receiving end electro-optical conversion module;
the input end of the receiving end photoelectric conversion module is connected with the output end of the receiving end transmission optical fiber;
and the input end of the data recovery module is connected with the output end of the receiving end photoelectric conversion module.
Light-weighted long distance L ED wireless optical communication transmission system under water, a serial communication port, L ED array can send the wavelength to be 450nm-550 nm's light.
Light-weighted long distance L ED wireless optical communication transmission system under water, a serial communication port, transmitting terminal digital signal processing module includes:
an encoding unit for encoding the digital signal;
and the modulation unit is used for modulating the coded digital signal.
Lightweight long distance L ED wireless optical communication transmission system under water, a serial communication port, receiving terminal digital signal processing module includes:
a demodulation unit for demodulating an input digital signal;
a decoding unit for decoding the demodulated digital signal.
Compared with the prior art, the beneficial effects of the utility model are that:
1. at the transmitting end, by arranging a transmitting end electro-optical conversion module, a transmitting end transmission optical fiber and a transmitting end photoelectric conversion module, the transmitting end electro-optical conversion module converts the electric signals in the data acquisition module into optical signals, the optical signals are transmitted to the transmitting end photoelectric conversion module through the transmission optical fiber, the optical signals are converted into the electric signals again, and then the electric signals are processed by a subsequent module to transmit corresponding optical signals; through using optic fibre transmission signal, can effectively avoid electromagnetic interference, guarantee that transmission signal is accurate, can place the transmitting terminal that has watertight mechanical structure in the deep sea very far away from data acquisition module as required.
2. At a receiving end, by arranging a receiving end electro-optical conversion module, a receiving end transmission optical fiber and a receiving end photoelectric conversion module, the receiving end electro-optical conversion module converts an electric signal in a receiving end digital signal processing module into an optical signal, the optical signal is transmitted to the receiving end photoelectric conversion module through the transmission optical fiber, the receiving end photoelectric conversion module converts the optical signal into an electric signal again, and then the signal data is recovered through a data recovery module; through using optic fibre transmission signal, can effectively avoid electromagnetic interference, guarantee that transmission signal is accurate, can place the receiving terminal that has watertight mechanical structure in the deep sea very far away from data recovery module as required.
Drawings
Fig. 1 is a schematic view of an embodiment of the present invention;
Detailed Description
In addition, with the continuous development of the technology, L ED cost suitable for submarine transmission is reduced, luminous efficiency is improved, large divergence angle transmission and large visual field receiving of a receiving end are both greatly reduced, difficulty of system design is greatly reduced, in addition, the underwater L ED wireless optical communication transmission system is easy to be butted with various communication methods used at present, underwater environment adaptability is good, expansion and upgrading are convenient, confidentiality is strong, communication speed is high, the underwater L ED wireless optical communication transmission system is particularly suitable for interconnection of various sensors in deep sea, data collection and connection between a water surface platform and underwater equipment, the underwater L ED wireless optical communication transmission system has a very wide application prospect, each module of the existing underwater communication system is connected through a cable, an underwater transmitting end or a receiving end of the communication system needs to be close to a signal collection end or a data recovery end in the sea, if the distance is long, a large amount of cable is adopted for transmission during intermediate signal transmission, and then a large amount of cable interference is carried on the ship due to the long distance transmission, and the underwater cable is larger than the underwater cable, and the underwater cable can bear the weight when the underwater load is carried by the ship, and the ship is larger, and the underwater cable is used for the ship, and the ship, the underwater cable is used for the ship, the underwater cable is larger load is carried by the ship, and the ship.
Based on this, the utility model provides a light-weighted long distance L ED wireless optical communication transmission system under water, include:
a transmitting end for transmitting an optical signal, the transmitting end comprising:
the data acquisition module 101 is used for acquiring data to be transmitted;
the transmitting end electro-optical conversion module 201, the input end of which is connected with the output end of the data acquisition module 101;
the input end of the transmitting end transmission optical fiber 301 is connected with the output end of the transmitting end electro-optical conversion module 201;
launch end 401 with watertight mechanical structure, disposed under water, comprises:
the input end of the transmitting end photoelectric conversion module 4001 is connected with the output end of the transmitting end transmission optical fiber 301;
the input end of the transmitting end digital signal processing module 4002 is connected with the output end of the transmitting end photoelectric conversion module 4001;
the input end of the digital-to-analog conversion module 4003 is connected with the output end of the transmitting end digital signal processing module 4002;
an input end of the amplifier 4004 is connected with an output end of the digital-to-analog conversion module 4003;
a dc bias block 4005 electrically connected to L ED array 4006 for supplying operating power to L ED array 4006 and for acting on L ED array 4006 to emit optical signals along with signals output by amplifier 4004;
an emission end lens assembly 4007 for guiding optical signals emitted by the L ED array 4006 into a transmission medium;
the receiving end is used for receiving the optical signal transmitted by the transmitting end and comprises:
receiving end 601 with watertight mechanical structure sets up under water, includes:
the receiving end lens assembly 6001 is used for allowing the optical signal emitted by the emitting end to pass through and converging the received optical signal;
a detector 6002, configured to detect the signal light transmitted through the receiving-end lens assembly 6001;
the input end of the transimpedance amplifier 6003 is connected with the output end of the detector 6002;
an input end of the equalizing and filtering module 6004 is connected to an output end of the transimpedance amplifier 6003;
an analog-to-digital conversion module 6005, the input end of which is connected with the output end of the equalization and filtering module 6004;
a receiving end digital signal processing module 6006, an input end of which is connected with an output end of the analog-to-digital conversion module 6005;
the input end of the receiving end electro-optical conversion module 6007 is connected with the output end of the receiving end digital signal processing module 6006;
the input end of the receiving end transmission optical fiber 701 is connected with the output end of the receiving end electro-optical conversion module 6007;
the input end of the receiving end photoelectric conversion module 801 is connected with the output end of the receiving end transmission optical fiber 701;
and an input end of the data recovery module 901 is connected with an output end of the receiving-end photoelectric conversion module 801.
The utility model discloses in the use, specific communication process is as follows, data acquisition module 101 gathers the signal that needs the transmission, the signal of telecommunication of gathering through data acquisition module 101 converts the light signal into through transmitting terminal electro-optical conversion module 201, the light signal gets into transmitting terminal transmission optic fibre 301 by transmitting terminal electro-optical conversion module 201, the light signal gets into transmitting terminal electro-optical conversion module 4001 through transmitting terminal transmission optic fibre 301 and converts the signal of telecommunication into, the signal of telecommunication transmits to transmitting terminal digital signal processing module 4002, encode and modulate the signal of telecommunication, later get into digital analog conversion module 4003 and convert into analog signal, analog signal carries out signal amplification through amplifier 4004, later with direct current offset module 4005 act on L array 4006 together, the transmission has the light signal of modulation code signal, assemble the light signal through transmitting terminal 4007, avoid when the ocean transmission dispersion, transmit light signal to the transmission of 501 under water channel simultaneously, the channel can be ocean, the channel under water can be ocean, the river, lake, after the light signal passes through the transmission of under water channel 501 transmission, get into the receiving terminal 6001 and get into the receiving terminal digital signal transmission module and get into the receiving terminal digital signal of receiving terminal signal conversion module after the receiving terminal signal conversion module and the receiving terminal digital signal processing module, the receiving terminal signal of receiving terminal is converted into the balanced signal of the receiving terminal signal processing module, the receiving terminal digital signal of receiving side, the receiving terminal signal of the balanced pair 6003 and the balanced signal processing module, the balanced signal of receiving terminal signal.
At the transmitting end, by arranging the transmitting end electro-optical conversion module 201, the transmitting end transmission optical fiber 301 and the transmitting end photoelectric conversion module 4001, the transmitting end electro-optical conversion module converts an electric signal in the data acquisition module into an optical signal, the optical signal is transmitted to the transmitting end photoelectric conversion module through the transmission optical fiber, the optical signal is converted into the electric signal again, then the corresponding optical signal is transmitted through subsequent module processing, the signal is transmitted through the optical fiber, the electromagnetic interference can be effectively avoided, the accuracy of the transmission signal is ensured, and the transmitting end 401 with the watertight mechanical structure can be placed at a position far away from the data acquisition module in the deep sea according to requirements;
at the receiving end, by arranging a receiving end electro-optical conversion module 6007, a receiving end transmission optical fiber 701, and a receiving end photoelectric conversion module 801, the receiving end electro-optical conversion module converts the electrical signal in the receiving end digital signal processing module into an optical signal, the optical signal is transmitted to the receiving end photoelectric conversion module 801 by the transmission optical fiber, the receiving end photoelectric conversion module 801 converts the optical signal into an electrical signal again, and then recovers the signal data through a data recovery module 901; through using optic fibre transmission signal, can effectively avoid electromagnetic interference, guarantee that transmission signal is accurate, can place the receiving terminal that has watertight mechanical structure in the deep sea very far away from data recovery module as required.
Meanwhile, as the density of the optical fiber is smaller, when the optical fiber is adopted for transmitting signals for a long distance, the adopted optical fiber is lighter in weight, if the data acquisition module or the data recovery module is required to be arranged on the ship, the ship cannot be subjected to large downward tension, the ship does not need to bear large load, the normal operation of the ship is ensured, and the data acquisition module or the data recovery module can be arranged on the ship; and when transporting whole device, the ship also can not bear great weight, and then can make whole system normally transport on the ship.
It should be noted that the data acquisition module can be implemented by using a processor, a camera and a microphone; the transmitting end electro-optical conversion module 201 and the receiving end electro-optical conversion module 6007 can be implemented by electro-optical converters; the transmitting end photoelectric conversion module 4001 and the receiving end photoelectric conversion module 801 can be realized by adopting photoelectric converters; the transmitting terminal digital signal processing module 4002 and the receiving terminal digital signal processing module 6006 may be implemented by a processor or a Field Programmable Gate Array (FPGA), and the transmitting digital-to-analog conversion module 4003 may be implemented by a digital-to-analog converter; the amplifier 4004 and the dc bias module 4005 are prior art and will not be described in detail herein, and the lens assembly is a common component in a communication system and will not be described in detail herein; the detector 6002 may be implemented by a photodetector; the transimpedance amplifier is a common technology in the art and will not be described in detail herein, and the equalization and filtering module may be implemented by a filter; the analog-to-digital conversion module 6005 may be implemented by an analog-to-digital converter; the data recovery module can adopt devices such as a sound box, a display screen and the like matched with the data acquisition module as required.
It should be noted that the launching end 401 with the watertight mechanical structure is generally made to be sealed under water as a whole; the receiving end 601 with the watertight mechanical structure is also integrally sealed underwater; the data acquisition end can be placed on the continent or on the ship, the corresponding data recovery end can be arranged in the submarine or the underwater workstation, or the data recovery end is arranged on the continent or the ship, and the data acquisition end is arranged in the submarine or the underwater workstation.
In some embodiments, the transmitting end electro-optical conversion module 201, the transmitting end transmission optical fiber 301, and the transmitting end photoelectric conversion module 4001 may also be sequentially disposed between the transmitting end digital signal processing module 4002 and the digital-to-analog conversion module 4003 or between the digital-to-analog conversion module 4003 and the amplifier 4004, at this time, the transmitting end 401 with the watertight mechanical structure includes the transmitting end photoelectric conversion module 4001 and the following devices, and is sealed under water, and the positions among the transmitting end electro-optical conversion module 201, the transmitting end transmission optical fiber 301, and the transmitting end photoelectric conversion module 4001 may be set as required, so that the number of devices to be sealed by the photoelectric conversion module 4001 and the following devices is reduced, the number of devices to be sealed by the transmitting end 401 with the watertight mechanical structure is reduced, the design difficulty of the transmitting end 401 with the watertight mechanical structure is reduced, and the volume to be sealed is reduced, for underwater sealing, the larger the volume is, the more difficult the sealing is, and the smaller the volume is, the more easy the sealing is, thereby reducing the difficulty in designing a mechanical structure.
In some embodiments, the receiving end electro-optical conversion module 6007, the receiving end transmission fiber 701, and the receiving end electro-optical conversion module 801 may also be sequentially disposed between the detector 6002 and the transimpedance amplifier 6003, between the transimpedance amplifier 6003 and the equalizing and filtering module 6004, between the equalizing and filtering module 6004 and the analog-to-digital conversion module 6005, or between the analog-to-digital conversion module 6005 and the receiving end digital signal processing module 6006, and the receiving end 601 with a watertight mechanical structure includes the receiving end electro-optical conversion module 6007 and its previous devices, and is sealed under water; the positions of the electro-optical conversion module 6007, the receiving-end transmission optical fiber 701 and the receiving-end photoelectric conversion module 801 can be set as required, so that the number of the receiving-end electro-optical conversion module 6007 and previous devices is reduced, the number of elements included in the receiving end 601 with a watertight mechanical structure is reduced, the size to be sealed is reduced, and the difficulty in designing the mechanical structure is reduced.
In some embodiments, L ED array 4006 may emit light with a wavelength of 450nm to 550nm, the wavelength of the light is between 450nm to 550nm, i.e., blue-green light, which attenuates in water less than other light bands and is more suitable for underwater transmission.
In some embodiments, the transmit-side digital signal processing module 4002 comprises:
an encoding unit 40021 for encoding the digital signal;
a modulation unit 40022 for modulating the coded digital signal, and coding and modulating the digital signal by the coding unit and the modulation unit
In some embodiments, the receiving side digital signal processing module 6006 includes:
a demodulation unit 60061 configured to demodulate an input digital signal;
a decoding unit 60062 decodes the demodulated digital signal, and demodulates and decodes the digital signal by the demodulating unit and the decoding unit.
The above-mentioned embodiments are only to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (4)
1. A light-weight long-distance underwater L ED wireless optical communication transmission system, comprising:
a transmitting end for transmitting an optical signal, the transmitting end comprising:
the data acquisition module (101) is used for acquiring data to be transmitted;
the input end of the transmitting end electro-optical conversion module (201) is connected with the output end of the data acquisition module (101);
the input end of the transmitting end transmission optical fiber (301) is connected with the output end of the transmitting end electro-optical conversion module (201);
launch end (401) with watertight mechanical structure, arranged under water, comprising:
the input end of the transmitting end photoelectric conversion module (4001) is connected with the output end of the transmitting end transmission optical fiber (301);
the input end of the transmitting end digital signal processing module (4002) is connected with the output end of the transmitting end photoelectric conversion module (4001);
the input end of the digital-to-analog conversion module (4003) is connected with the output end of the transmitting end digital signal processing module (4002);
the input end of the amplifier (4004) is connected with the output end of the digital-to-analog conversion module (4003);
l ED array (4006), the signal input end is connected with the output end of the amplifier (4004), and the optical signal with the modulation code signal is emitted;
a DC bias module (4005) electrically connected to the L ED array (4006) for providing operating power to the L ED array (4006) and for acting on optical signals emitted by the L ED array (4006) along with signals output by the amplifier (4004);
an emission end lens assembly (4007) for transmitting the optical signals emitted by the L ED array (4006) into a transmission medium;
the receiving end is used for receiving the optical signal transmitted by the transmitting end and comprises:
receiving end (601) with watertight mechanical structure, set up under water, include:
the receiving end lens assembly (6001) is used for allowing the optical signal emitted by the transmitting end to pass and converging the received optical signal;
a detector (6002) for detecting the signal light transmitted through the receiving end lens assembly (6001);
a transimpedance amplifier (6003) having an input terminal connected to the output terminal of the detector (6002);
the input end of the equalizing and filtering module (6004) is connected with the output end of the trans-impedance amplifier (6003);
the input end of the analog-to-digital conversion module (6005) is connected with the output end of the equalization and filtering module (6004);
the receiving end digital signal processing module (6006) is connected with the output end of the analog-to-digital conversion module (6005) at the input end;
the input end of the receiving end electro-optical conversion module (6007) is connected with the output end of the receiving end digital signal processing module (6006);
the input end of the receiving end transmission optical fiber (701) is connected with the output end of the receiving end electro-optical conversion module (6007);
the input end of the receiving end photoelectric conversion module (801) is connected with the output end of the receiving end transmission optical fiber (701);
and the input end of the data recovery module (901) is connected with the output end of the receiving end photoelectric conversion module (801).
2. The light-weight long-haul underwater L ED wireless optical communication transmission system of claim 1, wherein the L ED array (4006) emits light having a wavelength of 450nm-550 nm.
3. The light-weight long-distance underwater L ED wireless optical communication transmission system according to claim 1, wherein the transmitting-end digital signal processing module (4002) includes:
an encoding unit (40021) for encoding the digital signal;
and a modulation unit (40022) for modulating the encoded digital signal.
4. The light-weight long-distance underwater L ED wireless optical communication transmission system according to claim 1, wherein the receiving-end digital signal processing module (6006) comprises:
a demodulation unit (60061) for demodulating an input digital signal;
a decoding unit (60062) for decoding the demodulated digital signal.
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| CN201921600072.4U CN211046937U (en) | 2019-09-25 | 2019-09-25 | Light-weight long-distance underwater L ED wireless optical communication transmission system |
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| CN201921600072.4U CN211046937U (en) | 2019-09-25 | 2019-09-25 | Light-weight long-distance underwater L ED wireless optical communication transmission system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581736A (en) * | 2019-09-25 | 2019-12-17 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Light-weight long-distance underwater LED wireless optical communication transmission system |
| CN114866152A (en) * | 2022-04-14 | 2022-08-05 | 长春理工大学 | Underwater wireless optical communication transmitting terminal, optical communication receiving terminal, underwater wireless optical communication device and method |
-
2019
- 2019-09-25 CN CN201921600072.4U patent/CN211046937U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110581736A (en) * | 2019-09-25 | 2019-12-17 | 安徽光纤光缆传输技术研究所(中国电子科技集团公司第八研究所) | Light-weight long-distance underwater LED wireless optical communication transmission system |
| CN114866152A (en) * | 2022-04-14 | 2022-08-05 | 长春理工大学 | Underwater wireless optical communication transmitting terminal, optical communication receiving terminal, underwater wireless optical communication device and method |
| CN114866152B (en) * | 2022-04-14 | 2024-02-02 | 长春理工大学 | Underwater wireless optical communication transmitting terminal, optical communication receiving terminal and underwater wireless optical communication device and method |
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