Ocean observation subsurface buoy water surface and underwater double-link communication control system

Abstract

A water surface and underwater double-link communication control system for an ocean observation subsurface buoy relates to the technical field of communication control, and comprises a water surface communication unit arranged on a water surface buoy and comprising a first communication machine and a second communication machine which are backup for each other; the underwater communication unit is arranged on the underwater subsurface buoy and comprises wired communication equipment and underwater acoustic communication equipment; the buoy end control equipment is connected with the water surface communication unit and the underwater communication unit and is used for executing an underwater communication link control strategy and a water surface communication link control strategy; the subsurface buoy end control equipment is connected with the underwater communication unit and is used for being matched with the buoy end control equipment to implement an underwater communication link control strategy; the water surface communication link control strategy is used for performing self-adaptive selection or switching between the first communication machine and the second communication machine according to the data volume and the category of the data to be transmitted; the underwater communication link control strategy is used for managing redundant backup and switching of the wired communication equipment and the underwater acoustic communication equipment. The communication performance of the subsurface buoy system is improved.

Description

Technical Field

[0001] This invention relates to the field of communication control technology, and in particular to a dual-link communication control system for marine observation moorings. Background Technology

[0002] A mooring is a commonly used marine observation device. Mooring systems typically use surface relay buoys to achieve data exchange with the outside world.

[0003] In underwater communication, the main methods are wired communication and underwater acoustic communication. Wired communication methods include direct cable transmission and coupled cable communication. Although the transmission rate is relatively high, the cables are easily corroded by seawater due to long-term deployment in the corrosive marine environment, resulting in a significant decrease in communication reliability or even complete failure. While underwater acoustic communication can avoid the corrosion problems caused by physical connections, it has inherent drawbacks such as high transmission energy consumption and susceptibility to marine environmental noise interference.

[0004] In terms of surface communication, it mainly relies on Beidou short message communication. This method limits the type and scale of underwater observation data. The maximum number of bytes transmitted in a single short message is limited, and the transmission interval usually takes tens of seconds to several minutes before the next message is sent. In particular, it cannot meet the real-time transmission needs of high-frequency, large-capacity data in marine observation. Summary of the Invention

[0005] This invention provides a dual-link communication control system for marine observation moorings, solving the problem of insufficient communication performance in mooring systems.

[0006] To achieve the above objectives, this application adopts the following technical solution: A dual-link communication control system for the surface and underwater of an ocean observation mooring is provided, comprising: The surface communication unit installed on the water surface buoy includes a first communication unit and a second communication unit that serve as backups for each other; wherein the communication rate and power consumption of the first communication unit are lower than those of the second communication unit. The underwater communication unit installed on the underwater mooring includes wired communication equipment and underwater acoustic communication equipment; The buoy end control device installed on the surface buoy is connected to the surface communication unit and the underwater communication unit, and is used to execute the underwater communication link control strategy and the surface communication link control strategy. The buoy-end control device, which is installed on the underwater mooring, is connected to the underwater communication unit and is used to cooperate with the buoy-end control device to execute the underwater communication link control strategy. The surface communication link control strategy is used to adaptively select or switch between the first and second communication devices based on the amount and type of data to be transmitted, so as to upload data. The underwater communication link control strategy is used to manage the redundancy backup and switching of the wired communication equipment and the underwater acoustic communication equipment.

[0007] Furthermore, the first communication device is a Beidou short message communication device; the second communication device is a Tiantong satellite communication device.

[0008] Furthermore, the surface communication link control strategy is as follows: The data to be transmitted is divided into multiple categories based on its content and size. For data categories whose data volume is less than or equal to a preset threshold, the first communication device is selected for transmission first, and the second communication device is switched when the first communication device fails. For data categories whose data volume exceeds the preset threshold, the second communication device is preferentially selected for transmission.

[0009] Furthermore, the data categories include: Category 1 data: Device status data with a data size of less than 200 bytes; Category 2 data: Hydrological and environmental data with a size of less than 200 bytes; Three types of data: Noisy observation results with a data size of less than 200 bytes; Four types of data: Noise sampling data with a data volume greater than 200 bytes.

[0010] Furthermore, the surface communication link control strategy also includes: When the link where the second communication device is located is down, a fault message for the second communication device is sent through the first communication device.

[0011] Furthermore, the underwater communication link control strategy is as follows: By default, the wired communication device is enabled as the primary communication link, and the underwater acoustic communication device is disabled as the backup communication link. The connectivity status of the underwater wired communication link is monitored through a periodic heartbeat query and response mechanism; When a fault is detected in the wired communication link, the underwater acoustic communication device is activated to switch the communication link to the underwater acoustic communication link.

[0012] The underwater communication link control strategy also includes: When the underwater mooring detects a noise signal, it will suddenly transmit the noise signal (noise observation data or noise sampling data).

[0013] Furthermore, the heartbeat query and response mechanism is specifically as follows: The buoy control device periodically sends status query commands to the submersible control device via a wired communication link; If the buoy control device does not receive a status response from the submersible control device within a preset time, it determines that the underwater wired communication link is faulty and initiates communication with the underwater acoustic communication device. If the underwater buoy control device does not receive the status query instruction within a preset period, it determines that the underwater wired communication link is faulty and starts the underwater acoustic communication device to communicate. Attached Figure Description

[0014] Figure 1 A schematic diagram of a surface and underwater dual-link communication control system for a marine observation mooring provided in this application embodiment; Figure 2 This application provides a surface communication link control strategy and communication flowchart. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the technical solutions in the embodiments of this application are clearly described. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art are within the scope of protection of this application.

[0016] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0017] The steps described in the specification and the flowcharts in the accompanying drawings of this invention are not necessarily strictly executed according to the step numbers; the execution order of the method steps can be changed. Furthermore, certain steps can be omitted, multiple steps can be combined into one step, and / or one step can be broken down into multiple steps.

[0018] For applications requiring high reliability and communication speed in underwater mooring systems, existing systems face the following main problems: underwater communication links are prone to failure due to equipment corrosion or environmental interference, resulting in insufficient communication reliability; surface communication, on the other hand, is limited by transmission rate, making it difficult to balance data transmission needs with system power consumption. Therefore, this specification provides a dual-link communication control system for marine observation moorings, aiming to improve communication efficiency and reliability. The following detailed description, in conjunction with the accompanying drawings and preferred embodiments, will illustrate these points.

[0019] Please see Figure 1 This application provides a dual-link communication control system for marine observation buoys, such as... Figure 1 As shown, it includes: The surface communication unit installed on the water surface buoy includes a first communication unit and a second communication unit that serve as backups for each other; wherein the communication rate and power consumption of the first communication unit are lower than those of the second communication unit. The underwater communication unit installed on the underwater mooring includes wired communication equipment and underwater acoustic communication equipment; The buoy end control device installed on the surface buoy is connected to the surface communication unit and the underwater communication unit, and is used to execute the underwater communication link control strategy and the surface communication link control strategy. The buoy-end control device, which is installed on the underwater mooring, is connected to the underwater communication unit and is used to cooperate with the buoy-end control device to execute the underwater communication link control strategy. The surface communication link control strategy is used to adaptively select or switch between the first and second communication devices based on the amount and type of data to be transmitted, so as to upload data. The underwater communication link control strategy is used to manage the redundancy backup and switching of the wired communication equipment and the underwater acoustic communication equipment.

[0020] This application embodiment constructs a dual-link communication architecture with a two-tiered primary / backup complementarity and intelligent switching between the surface and underwater layers, and applies an intelligent routing control strategy centered on data and energy consumption. Under the premise of not significantly increasing the total system power consumption, it systematically solves the two major bottleneck problems of reliability and data transmission capability of underwater buoy communication, balances the inherent contradiction between communication rate and system power consumption, and achieves a more advanced on-demand allocation that is different from ordinary backup, keeping the system power consumption at an optimal level.

[0021] Furthermore, the first communication device is a Beidou short message communication device; the second communication device is a Tiantong satellite communication device.

[0022] Furthermore, the surface communication link control strategy is as follows: The data to be transmitted is divided into multiple categories based on its content and size. For data categories whose data volume is less than or equal to a preset threshold, the first communication device is selected for transmission first, and the second communication device is switched when the first communication device fails. For data categories whose data volume exceeds the preset threshold, the second communication device is preferentially selected for transmission.

[0023] Furthermore, the data categories include: Category 1 data: Device status data with a data size of less than 200 bytes; Category 2 data: Hydrological and environmental data with a size of less than 200 bytes; Three types of data: Noisy observation results with a data size of less than 200 bytes; Four types of data: Noise sampling data with a data volume greater than 200 bytes.

[0024] Furthermore, the surface communication link control strategy also includes: When the link where the second communication device is located is down, a fault message for the second communication device is sent through the first communication device.

[0025] Furthermore, the underwater communication link control strategy is as follows: By default, the wired communication device is enabled as the primary communication link, and the underwater acoustic communication device is disabled as the backup communication link. The connectivity status of the underwater wired communication link is monitored through a periodic heartbeat query and response mechanism; When a fault is detected in the wired communication link, the underwater acoustic communication device is activated to switch the communication link to the underwater acoustic communication link.

[0026] The underwater communication link control strategy also includes: When the underwater mooring detects a noise signal, it will suddenly transmit the noise signal (noise observation data or noise sampling data).

[0027] Furthermore, the heartbeat query and response mechanism is specifically as follows: The buoy control device periodically sends status query commands to the submersible control device via a wired communication link; If the buoy control device does not receive a status response from the submersible control device within a preset time, it determines that the underwater wired communication link is faulty and initiates communication with the underwater acoustic communication device. If the underwater buoy control device does not receive the status query instruction within a preset period, it determines that the underwater wired communication link is faulty and starts the underwater acoustic communication device to communicate.

[0028] To enhance the reliability of underwater communication for submersible buoys, this application's embodiments design a dual-link communication system for both surface and underwater communication. Specifically, surface satellite communication employs two methods: a BeiDou short message communication device and a TianTong data transmission communication device. The BeiDou short message service sends data once per minute, with a maximum of 200 bytes per message, while the TianTong communication data transmission rate is 1-2 kbps. Underwater communication utilizes both wired and underwater acoustic communication devices. Wired communication offers a higher rate, reaching 9600 kbps, while underwater acoustic communication has a rate of 1-2 kbps. Routing control is achieved at the buoy end through a dual-link communication control device, and communication control at the submersible end is also achieved through the same device.

[0029] In terms of communication control, the system prioritizes communication equipment based on the amount of data transmitted. The system categorizes communication data into four types, as shown in Table 1.

[0030] Table 1 System Communication Data Volume Allocation Table Second, based on transmission energy consumption, priority should be given to communication equipment with low energy consumption. Generally, underwater wired communication consumes less energy than underwater acoustic communication, and surface BeiDou short message communication consumes less energy than TianTong communication.

[0031] Third, they serve as backups for each other, prioritizing communication equipment failures or link failures, and can switch to other communication equipment for communication.

[0032] The underwater communication link control strategy is relatively simple, prioritizing the use of wired communication links. Underwater acoustic communication serves as an emergency supplementary communication link in case of wired link failure, and the underwater acoustic communication device is in a switched-off state by default. Underwater moorings and surface buoys employ timed and burst communication modes. To save energy, the underwater communication equipment on surface buoys and underwater moorings is in a low-power communication monitoring state.

[0033] The surface buoy periodically checks the status of the submersible. If no status response is received within the specified time, it indicates a failure in the underwater wired communication link, and the underwater acoustic communication equipment is activated to continue the check. Similarly, if the submersible does not receive periodic status query information, it indicates a failure in the underwater wired communication link, and underwater acoustic communication is activated to receive information.

[0034] If the buoy detects a noise signal, it will burst to send noise observation data or noise sampling data.

[0035] After receiving the data uploaded by the underwater buoy, the buoy's underwater communication equipment activates the corresponding surface communication equipment to transmit the data according to the data type.

[0036] The surface communication link control strategy is based on equipment energy consumption control requirements. The satellite communication equipment at the buoy end adopts a controlled communication method. When data needs to be transmitted, a priority communication device is activated based on the data type. If the priority communication device detects a fault, another communication device is activated. Its control strategy and process are as follows: Figure 2 As shown. Figure 2 As shown, for data types 1, 2, and 3, the BeiDou communication device is selected by default. If a fault is detected in the BeiDou communication device, the TianTong communication device will then be started to upload data. For data type 4, the TianTong communication device is selected by default. If the TianTong device fails or the link is down, a TianTong link failure message will be sent through the BeiDou device, canceling the data transmission of data type 4.

[0037] The surface-based BeiDou short message communication and Tiantong communication equipment form a complementary dual-link communication system, balancing power consumption control and communication rate requirements. The dual-link underwater wired and underwater acoustic communication enhances communication reliability. Underwater communication link control strategies enable communication link status detection and faulty link switching between submersible buoy devices, improving the underwater link's resilience. Surface communication link control strategies balance low-power data upload and command reception, with the dual satellite communication links acting as backups, improving satellite communication reliability. This control system increases satellite relay communication throughput for the submersible buoy without increasing power consumption, enhances underwater communication link redundancy, and improves the overall communication capability of the submersible buoy.

[0038] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0039] It is understood that the embodiments of this application have been described above in conjunction with the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. As those skilled in the art will know, various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, those skilled in the art, under the guidance or instruction of this application, can modify these features and embodiments to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, this invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this invention.

Claims

1. A dual-link communication control system for surface and underwater underwater observation moorings, characterized in that, include: The surface communication unit installed on the water surface buoy includes a first communication unit and a second communication unit that serve as backups for each other; wherein the communication rate and power consumption of the first communication unit are lower than those of the second communication unit. The underwater communication unit installed on the underwater mooring includes wired communication equipment and underwater acoustic communication equipment; The buoy end control device installed on the surface buoy is connected to the surface communication unit and the underwater communication unit, and is used to execute the underwater communication link control strategy and the surface communication link control strategy. The buoy-end control device, which is installed on the underwater mooring, is connected to the underwater communication unit and is used to cooperate with the buoy-end control device to execute the underwater communication link control strategy. The surface communication link control strategy is used to adaptively select or switch between the first and second communication devices based on the amount and type of data to be transmitted, so as to upload data. The underwater communication link control strategy is used to manage the redundancy backup and switching of the wired communication equipment and the underwater acoustic communication equipment.

2. The surface and underwater dual-link communication control system for marine observation moorings according to claim 1, characterized in that, The first communication device is a Beidou short message communication device; the second communication device is a Tiantong satellite communication device.

3. The surface and underwater dual-link communication control system for marine observation moorings according to claim 1, characterized in that, The control strategy for the surface communication link is as follows: The data to be transmitted is divided into multiple categories based on its content and size. For data categories whose data volume is less than or equal to a preset threshold, the first communication device is selected for transmission first, and the second communication device is switched when the first communication device fails. For data categories whose data volume exceeds the preset threshold, the second communication device is preferentially selected for transmission.

4. The surface and underwater dual-link communication control system for marine observation moorings according to claim 3, characterized in that, The data categories include: Category 1 data: Device status data with a data size of less than 200 bytes; Category 2 data: Hydrological and environmental data with a size of less than 200 bytes; Three types of data: Noisy observation results with a data size of less than 200 bytes; Four types of data: Noise sampling data with a data volume greater than 200 bytes.

5. The surface and underwater dual-link communication control system for marine observation moorings according to claim 3, characterized in that, The surface communication link control strategy also includes: When the link where the second communication device is located is down, a fault message for the second communication device is sent through the first communication device.

6. The surface and underwater dual-link communication control system for marine observation moorings according to claim 1, characterized in that, The underwater communication link control strategy is as follows: By default, the wired communication device is enabled as the primary communication link, and the underwater acoustic communication device is disabled as the backup communication link. The connectivity status of the underwater wired communication link is monitored through a periodic heartbeat query and response mechanism; When a fault is detected in the wired communication link, the underwater acoustic communication device is activated to switch the communication link to the underwater acoustic communication link.

7. The surface and underwater dual-link communication control system for marine observation moorings according to claim 6, characterized in that, The underwater communication link control strategy also includes: When the underwater mooring detects a noise-type signal, it will suddenly transmit the noise-type signal. The noise signals include three types of data and four types of data.

8. The surface and underwater dual-link communication control system for marine observation moorings according to claim 6, characterized in that, The heartbeat query and response mechanism is as follows: The buoy control device periodically sends status query commands to the submersible control device via a wired communication link; If the buoy control device does not receive a status response from the submersible control device within a preset time, it determines that the underwater wired communication link is faulty and initiates communication with the underwater acoustic communication device. If the underwater buoy control device does not receive the status query instruction within a preset period, it determines that the underwater wired communication link is faulty and starts the underwater acoustic communication device to communicate.

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