CN118118096A - Underwater detection transmission system based on laser communication - Google Patents
Underwater detection transmission system based on laser communication Download PDFInfo
- Publication number
- CN118118096A CN118118096A CN202410285343.0A CN202410285343A CN118118096A CN 118118096 A CN118118096 A CN 118118096A CN 202410285343 A CN202410285343 A CN 202410285343A CN 118118096 A CN118118096 A CN 118118096A
- Authority
- CN
- China
- Prior art keywords
- underwater
- laser communication
- circuit
- detection
- laser
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 79
- 238000004891 communication Methods 0.000 title claims abstract description 59
- 230000005540 biological transmission Effects 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000012544 monitoring process Methods 0.000 claims abstract description 18
- 230000006855 networking Effects 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims description 28
- 238000011161 development Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 description 6
- 238000001914 filtration Methods 0.000 description 4
- 239000013535 sea water Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Landscapes
- Optical Communication System (AREA)
Abstract
The invention discloses an underwater detection transmission system based on laser communication, which belongs to the field of laser communication and comprises an underwater detection networking and an on-water receiving monitoring base station, wherein the underwater detection networking comprises an underwater camera fixed detection array, an unmanned submersible, a sonar and a buoy, the underwater camera fixed detection array comprises a plurality of underwater cameras, the unmanned submersible, the sonar and the buoy are all provided with the laser communication system, and the buoy is also provided with a camera. The underwater detection transmission system based on laser communication can improve the communication speed and capacity of the system, improve the performance, improve the effectiveness and reliability of collected data, improve the communication distance and communication quality of the system, and have important application prospect and profound development significance for developing the underwater detection transmission system.
Description
Technical Field
The invention relates to the technical field of laser communication, in particular to an underwater detection transmission system based on laser communication.
Background
The ocean has rich resources and high scientific research value, and the exploration and observation in many scientific fields are closely related to the ocean. Under the continuous development promotion of ocean development strategy in China, the exploration and development of ocean resources are also more and more important. The development of the high-performance underwater detection transmission system plays a vital role in maintaining national ocean safety, developing ocean environment monitoring and ocean resource exploration in China.
The underwater wireless communication technology is a key technology of an underwater detection system, can monitor the activities, the conditions and the like of the ocean, can acquire and transmit underwater data, can detect abnormal conditions of the seabed, can observe and detect specific targets of the seabed, and can transmit the acquired data back in real time.
The underwater wireless communication technology with the widest application range at present is an underwater sound communication technology, but with the continuous improvement of development requirements, the further development is limited by the characteristics of low underwater sound communication speed, large volume, short transmission distance, low confidentiality and obvious Doppler effect.
The underwater laser communication adopts the light beam with the blue-green wave band of 450-570nm, has the characteristics of good penetrating power in seawater, high directivity, wide transmission frequency band, large transmission information capacity and strong instantaneity, and is the development trend and the important development direction of the future underwater communication technology.
Disclosure of Invention
The invention aims to provide an underwater detection transmission system based on laser communication, which aims to solve the problems in the background art.
In order to achieve the above purpose, the invention provides an underwater detection transmission system based on laser communication, which comprises an underwater detection networking and an on-water receiving monitoring base station, wherein the underwater detection networking comprises an underwater camera fixed detection array, an unmanned submersible, a sonar and a buoy, the underwater camera fixed detection array comprises a plurality of underwater cameras, the unmanned submersible, the sonar and the buoy are all provided with the laser communication system, and the buoy is also provided with a camera.
Preferably, the laser communication system comprises an optical transmitter and an optical receiver, wherein the optical transmitter comprises a coding circuit, a modulation circuit, a DAC module, a driving circuit and a laser, the coding circuit is connected with the modulation circuit, the modulation circuit is connected with the DAC module, the output end of the DAC module is connected with the driving circuit, and the driving circuit is connected with the laser.
Preferably, the optical receiver comprises a photoelectric detector, an amplifier, a filter, an ADC module, a demodulation circuit and a decoding circuit, wherein the photoelectric detector is connected with the amplifier, the amplifier is connected with the filter, the filter is connected with the ADC module, an output port of the ADC module is connected with the demodulation circuit, and the demodulation circuit is connected with the decoding circuit.
Preferably, the underwater camera fixed detection array, the unmanned submersible, the sonar, the buoy and the above-water receiving monitoring base station all transmit information through the laser communication system.
Therefore, the underwater detection transmission system based on laser communication has the following beneficial effects:
(1) The laser communication is adopted as a communication mode between detection devices in the underwater detection networking and between the underwater detection networking and the on-water receiving monitoring base station, and the 450-570nm wave band blue-green laser beam has the advantages of good penetration capability in seawater, high directivity, wide transmission frequency band, large transmission information capacity and strong instantaneity, and compared with the traditional underwater acoustic communication, the method has the advantages of being capable of achieving both the transmission capacity and the transmission rate of data and ensuring the reliability of data transmission;
(2) The underwater camera fixed detection array, the unmanned submersible, the sonar and the buoy are adopted as an underwater detection networking, so that the condition information such as the submarine, the underwater and water surface environment, the detected target and the like can be detected in an omnibearing manner, and the accuracy and the universality of the detection information of the underwater detection transmission system are improved;
(3) The underwater detection networking detection equipment can carry out laser communication transmission data, is not limited to the fact that the equipment can only communicate with the water receiving monitoring base station, can enlarge the visual angle range of laser communication, avoids the problem that the detection equipment can not carry out optical communication due to long distance and light shielding caused by the fact that the detection equipment directly transmits information to the water receiving monitoring base station, and improves the communication distance and communication quality of a system.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of a system of the present invention;
fig. 2 is a block diagram of a laser communication system according to the present invention.
Detailed Description
Examples
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 and 2, the invention discloses an underwater detection transmission system based on laser communication, which comprises an underwater detection networking and an on-water receiving monitoring base station, wherein the underwater detection networking comprises an underwater camera fixed detection array, an unmanned submersible, a sonar and a buoy, the underwater camera fixed detection array comprises a plurality of underwater cameras, the unmanned submersible, the sonar and the buoy are all provided with the laser communication system, and the buoy is also provided with a camera. The underwater camera, the unmanned submersible, the sonar and the buoy select products with corresponding performance indexes such as depth, temperature and the like according to detection requirements.
The underwater camera fixed detection array is a fixed node, the submarine environment, biology, geological features and the like are detected in an omnibearing way, the collected detection data are converted into optical signals through a laser communication system, the optical signals are sent to other detection equipment of the underwater detection networking and an on-water receiving monitoring base station, the real-time collected detection data are sent, and the data from the other detection equipment are received through the laser communication system;
the unmanned submersible is a mobile node, can submerge under water and perform hidden monitoring, information collection, underwater detection, shooting and the like on sea areas with different depths, converts acquired detection data into optical signals through a laser communication system, transmits the real-time acquired detection data to other detection equipment of an underwater detection networking and an on-water receiving monitoring base station, and receives data from other detection equipment through the laser communication system;
The sonar is a fixed node, can perform detection for a long time, continuously perform data acquisition, detect and research underwater environments, ecological systems, target objects and the like, convert the acquired detection data into optical signals through a laser communication system, send the real-time acquired detection data to other detection equipment of the underwater detection networking and an on-water receiving and monitoring base station, and receive the data from the other detection equipment through the laser communication system;
the buoy is a fixed node, can detect water surface information, converts the acquired detection data into optical signals through a laser communication system, transmits the detection data acquired in real time to the water receiving monitoring base station, and receives data from other detection equipment through the laser communication system;
the water receiving monitoring base station is a water node, and receives detection data from each detection device of the underwater detection networking through the laser communication system.
The laser communication system comprises an optical transmitter and an optical receiver, wherein the optical transmitter comprises a coding circuit, a modulation circuit, a DAC module, a driving circuit and a laser, and the optical receiver comprises a photoelectric detector, an amplifier, a filter, an ADC module, a demodulation circuit and a decoding circuit.
The coding circuit is connected with the modulation circuit, the modulation circuit DAC module is connected with the output end of the DAC module, the driving circuit is connected with the laser.
The coding circuit codes the status information of the seabed, underwater, water surface environment, detection targets and the like acquired in real time and then transmits the coded signals to the modulation circuit.
The modulation circuit modulates the coded signal and transmits the obtained digital modulation signal to the DAC module. The DAC module converts the digital modulation signal into an analog signal and then transmits the signal to the driving circuit. The driving circuit provides power for the laser and drives the laser to send driving signals. The laser emits a laser beam carrying a signal.
The photoelectric detector is connected with the amplifier, the amplifier is connected with the filter, the filter is connected with the ADC module, the output port of the ADC module is connected with the demodulation circuit, and the demodulation circuit is connected with the decoding circuit.
The photoelectric detector converts the optical signal into an electric signal after receiving the laser beam emitted by the optical receiver, and transmits the electric signal to the amplifier; the amplifier amplifies the weak electric signal received from the photoelectric detector and transmits the weak electric signal to the filter; the filter filters out signal noise from the amplified electric signal, carries out filtering rectification, and transmits the electric signal after filtering rectification to the ADC module; the ADC module converts the filtered and rectified analog signals into digital signals and transmits the digital signals to the demodulation circuit; the demodulation circuit demodulates the digital signal to obtain a signal before modulation, and transmits the signal to the decoding circuit; the decoding circuit restores the demodulated signal to original state information of the seabed, underwater, water surface environment, detected targets and the like.
The coding mode used by the coding circuit is selected according to the transmission distance, the transmission rate and the anti-noise performance factors, including DPSK coding, NRZ coding, RZ coding, PSK coding and Manchester coding; the modulation mode used by the modulation circuit selects AM modulation, FSK modulation, QAM modulation, OFDM modulation and the like according to the requirements and application scenes.
The laser emits blue-green laser beams with the wave bands of 450-570nm, and has better penetrability in seawater.
The photodetector may be selected from photodiodes, avalanche photodiodes, photomultiplier tubes, fiber optic detectors, and the like.
The amplifier selects an erbium-doped optical fiber amplifier, a semiconductor optical amplifier, an optical fiber Raman amplifier and the like according to the characteristics of requirements.
The filter can select a low-pass filter, a high-pass filter, a band-stop filter, a passive filter and the like according to the use requirement.
The demodulation circuit selects the same modulation scheme as the modulation circuit, and the decoding circuit selects the same coding scheme as the coding circuit.
Each detection device in the underwater detection networking continuously detects and collects data on condition information such as submarine, underwater, water surface environments, detection targets and the like in real time, the collected electric signals are transmitted into an optical transmitter, an encoding circuit encodes the electric signals and transmits the encoded signals into a modulation circuit, the encoded signals are modulated, the obtained digital modulation signals are transmitted to a DAC module, the digital modulation signals are converted into analog signals and then are transmitted to a driving circuit, and the driving circuit drives a laser to emit optical signals with information. After the optical receiver of each detection device and the water receiving monitoring base station receives the optical signal transmitted by the optical transmitter, the photoelectric detector converts the optical signal into an electric signal, the electric signal is transmitted to the amplifier, and the electric signal is amplified and then enters the filter for filtering and rectifying to obtain the analog signal for filtering clutter. The ADC module converts the received analog signals into digital signals, the digital signals are demodulated into signals before modulation by the demodulation circuit and are transmitted into the decoding circuit, and the decoding circuit restores the demodulated signals into original state information of the seabed, underwater, water surface environment, detected targets and the like.
Therefore, the underwater detection transmission system based on laser communication uses the laser communication technology to replace the underwater acoustic communication mode used by the traditional underwater detection system, so that the system communication speed and capacity can be improved, the performance can be improved, the effectiveness and reliability of collected data can be improved, the visual angle range of laser communication can be enlarged, the problem that each detection device directly transmits information to a receiving monitoring base station on water and cannot perform optical communication due to long distance and light shielding can be avoided, the communication distance and communication quality of the system can be improved, and the system has important application prospect and profound development significance for developing the underwater detection transmission system.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (4)
1. The utility model provides an underwater detection transmission system based on laser communication, includes underwater detection networking and receives monitoring base station on water, its characterized in that: the underwater detection networking comprises an underwater camera fixed detection array, an unmanned submersible, a sonar and a buoy, wherein the underwater camera fixed detection array comprises a plurality of underwater cameras, the unmanned submersible, the sonar and the buoy are all provided with a laser communication system, and the buoy is also provided with a camera.
2. An underwater detection transmission system based on laser communication as claimed in claim 1, wherein: the laser communication system comprises an optical transmitter and an optical receiver, wherein the optical transmitter comprises a coding circuit, a modulation circuit, a DAC module, a driving circuit and a laser, the coding circuit is connected with the modulation circuit, the modulation circuit is connected with the DAC module, the output end of the DAC module is connected with the driving circuit, and the driving circuit is connected with the laser.
3. An underwater detection transmission system based on laser communication as claimed in claim 2, wherein: the optical receiver comprises a photoelectric detector, an amplifier, a filter, an ADC module, a demodulation circuit and a decoding circuit, wherein the photoelectric detector is connected with the amplifier, the amplifier is connected with the filter, the filter is connected with the ADC module, an output port of the ADC module is connected with the demodulation circuit, and the demodulation circuit is connected with the decoding circuit.
4. An underwater detection transmission system based on laser communication as claimed in claim 1, wherein: the underwater camera fixed detection array, the unmanned submersible, the sonar, the buoy and the water receiving monitoring base station all transmit information through the laser communication system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410285343.0A CN118118096A (en) | 2024-03-13 | 2024-03-13 | Underwater detection transmission system based on laser communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410285343.0A CN118118096A (en) | 2024-03-13 | 2024-03-13 | Underwater detection transmission system based on laser communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118118096A true CN118118096A (en) | 2024-05-31 |
Family
ID=91210511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410285343.0A Pending CN118118096A (en) | 2024-03-13 | 2024-03-13 | Underwater detection transmission system based on laser communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118118096A (en) |
-
2024
- 2024-03-13 CN CN202410285343.0A patent/CN118118096A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107508649B (en) | A kind of underwater laser time dissemination system and method based on Beidou | |
| CN104618032B (en) | The electromagnetic wave transmission system and method at a kind of water-air interface over strait | |
| CN106937348B (en) | Underwater wireless sensor network networking method and underwater wireless sensor network node device | |
| CN105356925B (en) | A kind of land and water communication system based on relay buoy | |
| CN108462538B (en) | Time-slot-hopping laser underwater acoustic digital communication system and method | |
| CN107317634A (en) | Radio optical communication system under intelligent water | |
| CN105680941A (en) | Underwater LED (Light-Emitting Diode) long distance communication system based on visible light | |
| US20120105246A1 (en) | Contactless underwater communication device | |
| CN102098112A (en) | Method and system for underwater short-distance data communication through light-emitting diode (LED) light source | |
| CN110581736A (en) | Light-weight long-distance underwater LED wireless optical communication transmission system | |
| US11245476B2 (en) | Highly robust underwater optical communication system | |
| CN102355440A (en) | Underwater acoustic communication method based on very minimum chirp keying modulation | |
| CN114844575B (en) | Water-air cross-medium wireless two-way communication method | |
| CN110557201A (en) | Multi-angle receiving device of underwater visible light communication mobile node | |
| CN110061776B (en) | Lighting and sensor and communication integrated system and device for underwater vehicle | |
| CN211046937U (en) | Light-weight long-distance underwater L ED wireless optical communication transmission system | |
| CN118118096A (en) | Underwater detection transmission system based on laser communication | |
| Leccese et al. | State-of-the art and perspectives of underwater optical wireless communications | |
| CN112737680A (en) | Underwater image transmission system based on visible light communication and rapid likelihood blind detection algorithm thereof | |
| CN114070419B (en) | Underwater arbitrary shape detection array system and method based on high-speed wireless communication | |
| CN115276716B (en) | Underwater robot information communication system and method | |
| CN112235049A (en) | Communication system and method for diving, shipborne communicator and diving communicator | |
| Spagnolo et al. | A brief survey on underwater optical wireless communications | |
| CN209748564U (en) | Illumination and sensor and communication integrated system and device of underwater vehicle | |
| Mamatha et al. | Underwater wireless optical communication-A review |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination |