Underwater rescue signal transmission method based on ocean communication buoy

Abstract

The invention discloses an underwater rescue signal transmission method based on ocean communication buoys, and the method comprises the steps: building a first ad hoc network which is composed of a plurality of ocean communication buoys and a temporary base station in a target sea area in advance through an ad hoc network node building module; when a target user performs an activity in a target sea area, a first device is pre-configured to join a first ad hoc network; monitoring whether the target user triggers a rescue instruction in real time through the first ad hoc network; if yes, first positioning of the target user is obtained in real time, a rescuer signal in the target sea area is searched through a first ad hoc network for communication connection, meanwhile, real-time positioning is conducted on a rescuer, and second positioning is obtained; based on the communication connection, the first positioning and the second positioning are sent to the rescuer, and underwater rescue signal transmission is completed; according to the invention, the problem that the position information of underwater trapped persons and rescue workers cannot be accurately positioned during maritime distress rescue is solved, and the rescue success probability of the trapped persons can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of marine emergency communications, and in particular relates to an underwater rescue signal transmission method based on a marine communication buoy. Background Art

[0002] With the development of science and technology, people's fear of the sea has gradually weakened, resulting in an increasing number of people going out to sea for fun. The most common activity in sea travel is deep-sea diving. This high-risk activity causes a certain number of people to encounter crises in the ocean every year. In order to achieve rapid rescue, divers are usually equipped with rescue communication equipment before the project experience to facilitate rapid positioning and rescue in distress. However, the existing field of marine emergency communication technology mainly relies on satellite communications. However, when using satellite communications to locate trapped people in the sea during marine rescue, there are problems such as slow satellite call time and great difficulty in positioning, which increases the trapped time of trapped people and reduces the success rate of rescue. In addition, if only the ship communication equipment and the rescue communication equipment are used for communication connection, the signal stability will be greatly reduced due to the interference of seawater on the signal and the increase in the diving depth, making it impossible for rescue personnel to quickly locate and carry out accurate rescue. Summary of the invention

[0003] In view of this, the object of the present invention is to provide an underwater rescue signal transmission method based on an ocean communication buoy to solve the above-mentioned technical problems.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] An underwater rescue signal transmission method based on an ocean communication buoy, wherein the ocean communication buoy includes a variable length antenna, an antenna deployment and holding device, a short wave communication module, a stabilization device, a power supply module, a high frequency underwater acoustic communication module and a self-organizing network node building module;

[0006] Underwater rescue signal transmission based on ocean communication buoys includes:

[0007] By using the self-organizing network node building module, a first self-organizing network consisting of a number of ocean communication buoys and temporary base stations is pre-built in the target sea area;

[0008] When the target user is conducting activities in the target sea area, the first device is pre-configured to join the first ad hoc network;

[0009] Monitor in real time through the first ad hoc network whether the target user triggers a rescue command; if so, obtain the first location of the target user in real time, and conduct communication connection by searching for the rescuer's signal in the target sea area through the first ad hoc network, and simultaneously locate the rescuer in real time to obtain the second location;

[0010] Based on the communication connection, the first positioning and the second positioning are sent to the rescuer to complete the underwater rescue signal transmission.

[0011] Furthermore, a method for transmitting underwater rescue signals based on ocean communication buoys also includes: when it is detected that a target user triggers a rescue command, a rescuer is assigned to carry out activities in the target sea area, and a second device is pre-configured before the activity to join the first self-organizing network.

[0012] Furthermore, a method for transmitting underwater rescue signals based on an ocean communication buoy also includes:

[0013] Variable length antennas are used to transmit or receive shortwave signals;

[0014] The antenna deployment and holding device includes an antenna storage and braking device, and an inflation and air pressure control device, which is used to store the side length antenna when it is not deployed, and to use the inflation and air pressure control device to deploy the variable length antenna to a preset length and maintain it when it is deployed, so as to adapt to different levels of sea conditions and achieve stable communication;

[0015] Shortwave communication module, used to complete the coding and modulation of transmitted information, as well as the analysis and processing of received signals;

[0016] Stabilizing device, used for steady-state control of ocean communication buoy on the sea surface;

[0017] A power module, used for powering the ocean communication buoy;

[0018] High-frequency underwater acoustic communication module, used to complete underwater communication;

[0019] The self-organizing network node building module is used to connect all ocean communication buoys, temporary equipment and temporary base stations in the target sea area to build the first self-organizing network.

[0020] Furthermore, a method for transmitting underwater rescue signals based on ocean communication buoys also includes: when the first self-organizing network is generated, each deployed ocean communication buoy and temporary base station is initially positioned to determine the initial position of each node in the first self-organizing network, and then the position of each node is updated according to the node's position change data.

[0021] Furthermore, a method for transmitting underwater rescue signals based on ocean communication buoys also includes: real-time positioning of the first device and the second device through location information of relevant ocean communication buoys and temporary base stations in the first self-organizing network.

[0022] Furthermore, a method for transmitting underwater rescue signals based on ocean communication buoys also includes: based on a first self-organizing network, obtaining a first positioning and a second positioning and displaying them to decision makers at a temporary base station in combination with a relevant rescue system, and collecting decision opinions issued by decision makers, and using a communication connection to feed back to rescuers.

[0023] Furthermore, the marine communication buoy in the underwater rescue signal transmission method based on the marine communication buoy also includes a false signal generation module;

[0024] When the first positioning of the target user cannot be monitored, it is determined that the first device is abnormal, and the ocean communication buoy closest to the target user before the first positioning disappears is obtained as the main buoy;

[0025] The false signal generation module of the main buoy performs the following operations:

[0026] Obtain the historical positioning information after the rescue command is triggered and before the first positioning disappears, and generate a historical trajectory;

[0027] Predict the real-time location of the target user based on the historical trajectory to obtain the predicted location;

[0028] Based on the predicted positioning, a false signal is generated and transmitted to other ocean communication buoys, a second device, and a temporary base station.

[0029] Furthermore, a method for transmitting underwater rescue signals based on ocean communication buoys also includes: when any ocean communication buoy receives a false signal, the signal transmission direction is determined according to the predicted positioning of the false signal, and based on the signal transmission direction, a directional shortwave signal is transmitted; when the first device receives any directional shortwave signal, a corresponding response signal is returned according to the signal transmission path.

[0030] The beneficial effects of the present invention are:

[0031] The present invention proposes an underwater rescue signal transmission method based on an ocean communication buoy. A self-organizing network is adopted to construct a temporary base station formed by an ocean communication buoy and a ship, thereby reducing the dependence on satellites as relay communication nodes and achieving efficient communication in the target sea area. At the same time, the ocean communication buoy is used as a construction node of the self-organizing network, which can improve the stability of underwater communication, further improve the reliability of underwater rescue signal transmission, and increase the survival rate of trapped persons.

[0032] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or they may be taught from the practice of the present invention. The purposes and other advantages of the present invention may be realized and obtained by the structures particularly pointed out in the written description and the accompanying drawings.

[0033] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0035] Figure 1 This is a method flow chart of an underwater rescue signal transmission method based on an ocean communication buoy in an embodiment of the present invention;

[0036] Figure 2 It is a schematic diagram of an ocean communication buoy module of an underwater rescue signal transmission method based on an ocean communication buoy in an embodiment of the present invention;

[0037] Figure 3 The present invention is a flowchart of a false signal generation process in an underwater rescue signal transmission method based on an ocean communication buoy in an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0039] like Figure 1 and Figure 2 As shown, the present invention proposes an underwater rescue signal transmission method based on an ocean communication buoy, comprising:

[0040] An ocean communication buoy, which includes a variable-length antenna, an antenna deployment and holding device, a shortwave communication module, a stabilization device, a power supply module, a high-frequency underwater acoustic communication module, and a self-organizing network node assembly module;

[0041] Among them, the underwater rescue signal transmission method based on the ocean communication buoy includes:

[0042] S101, constructing a first self-organizing network consisting of a number of ocean communication buoys and temporary base stations in the target sea area in advance through a self-organizing network node building module;

[0043] When the target user is conducting activities in the target sea area, the first device is pre-configured to join the first ad hoc network;

[0044] S102, monitoring in real time through the first ad hoc network whether the target user triggers a rescue command;

[0045] S103, if yes, obtain the first position of the target user in real time, and conduct communication connection by searching for the rescuer signal in the target sea area through the first ad hoc network, and simultaneously perform real-time positioning of the rescuer to obtain the second position;

[0046] S104, based on the communication connection, sending the first positioning and the second positioning to the rescuer to complete the underwater rescue signal transmission;

[0047] The working principle of the above technical solution is as follows: in actual application, first, when the ship arrives at the target sea area, a number of ocean communication buoys are distributedly arranged in the target sea area by means including but not limited to manual deployment, and the initial deployment position is recorded, and then activation is completed. The activated ocean communication buoy uses the self-organizing network node building module carried by itself to complete the self-organizing network construction with other surrounding ocean communication buoys in a broadcasting manner until all ocean communication buoys are deployed. At the same time, a temporary base station is established on the ship to join the self-organizing network to complete the first self-organizing network construction. When any user is ready to dive, that is, intends to carry out activities in the target sea area, a pre-prepared rescue equipment (i.e., the first device) is configured for it, and it is added to the first self-organizing network to receive the information sent by it in real time. When the first self-organizing network is operating normally, the status of the target user in the target sea area is monitored in real time, that is, it is determined whether it has actively or the device automatically triggers the rescue command, where the active trigger can set functions such as buttons, and the automatic trigger can be set When an abnormality occurs, it is triggered. When any node in the first self-organizing network receives the rescue command, multiple adjacent ocean communication buoys in the first self-organizing network are mobilized to locate the target user to obtain its first positioning. Since the application field involved in the present application is diving, the maximum depth or breadth of diving is basically less than 1000m. Therefore, the positioning method can use the method of calculating the communication signal transmission time for positioning. At the same time, when the temporary base station receives the rescue signal, it arranges the rescue personnel to wear rescue equipment for rescue as soon as possible, and the first self-organizing network starts to search for the rescuer's signal within the target sea area, and after the search is successful, it communicates and connects (that is, invites it to join the first self-organizing network), and after joining successfully, it locates the rescuer in real time to obtain the second positioning. Finally, during the rescue process of the rescuer, the first self-organizing network provides it with its own positioning and the positioning of the trapped person in real time, so as to facilitate its rapid completion of underwater rescue. It is worth noting that after changing the target sea area, the ocean communication buoy can be recycled and reused to save costs.

[0048] The beneficial effects of the above technical scheme are as follows: through the above technical scheme, a self-organizing network is adopted to construct a temporary base station formed by the ocean communication buoy and the ship, thereby reducing the dependence on the satellite as a relay communication node, and realizing efficient communication in the target sea area. At the same time, the ocean communication buoy is used as a construction node of the self-organizing network, which can improve the stability of underwater communication, further improve the reliability of underwater rescue signal transmission, and increase the survival rate of trapped people.

[0049] In one embodiment, a method for transmitting underwater rescue signals based on an ocean communication buoy further includes: when a target user triggers a rescue command, assigning a rescuer to carry out activities in the target sea area, and pre-configuring a second device to join the first ad hoc network before the activity;

[0050] The working principle and beneficial effects of the above technical solution are as follows: when it is monitored that the target user triggers a rescue command, rescuers are assigned to carry out activities in the target sea area, and the second device is pre-configured before the activity, so that the nodes in the first self-organizing network can search for the second device to join the self-organizing network, thereby reducing the unnecessary time for manually connecting the second device to the self-organizing network during the rescue operation.

[0051] In one embodiment, a method for transmitting underwater rescue signals based on an ocean communication buoy further includes:

[0052] Variable length antennas are used to transmit or receive shortwave signals;

[0053] The antenna deployment and holding device includes an antenna storage and braking device, and an inflation and air pressure control device, which is used to store the side length antenna when it is not deployed, and to use the inflation and air pressure control device to deploy the variable length antenna to a preset length and maintain it when it is deployed, so as to adapt to different levels of sea conditions and achieve stable communication;

[0054] Shortwave communication module, used to complete the coding and modulation of transmitted information, as well as the analysis and processing of received signals;

[0055] Stabilizing device, used for steady-state control of ocean communication buoy on the sea surface;

[0056] A power module, used for powering the ocean communication buoy;

[0057] High-frequency underwater acoustic communication module, used to complete underwater communication;

[0058] A self-organizing network node building module, used to connect all ocean communication buoys, temporary equipment and temporary base stations in the target sea area to build a first self-organizing network;

[0059] The working principle of the above technical solution is as follows: In order to achieve stable transmission of underwater rescue signals, the present application provides a marine communication buoy, including a variable-length antenna, an antenna deployment and holding device, a shortwave communication module, a stabilization device, a power supply module, a high-frequency hydroacoustic communication module and a self-organizing network node building module, wherein the variable-length antenna can maintain stable signal transmission under different sea conditions, and the antenna deployment and holding device can provide stable communication while the storage device therein can also facilitate subsequent recycling. Due to the characteristics of shortwave communication being applicable to ships, the buoy proposed in the present application adopts a shortwave communication module to complete the coding modulation of the transmitted information and the analysis and processing of the received signal. The stabilization device and the power supply device are used to improve the reliability of the buoy, and the high-frequency hydroacoustic communication module is used to complete underwater communication, and hydroacoustic communication or blue-green laser communication equipment can be used. The self-organizing network node building module is used to connect all marine communication buoys, temporary equipment (including the first equipment and the second equipment) and temporary base stations in the target sea area to build a first self-organizing network, further ensuring the reliability of signal transmission;

[0060] The beneficial effects of the above technical scheme are as follows: through the above technical scheme, a self-organizing network is adopted to construct a temporary base station formed by the ocean communication buoy and the ship, thereby reducing the dependence on the satellite as a relay communication node, and realizing efficient communication in the target sea area. At the same time, the ocean communication buoy is used as a construction node of the self-organizing network, which can improve the stability of underwater communication, further improve the reliability of underwater rescue signal transmission, and increase the survival rate of trapped people.

[0061] In one embodiment, a method for transmitting underwater rescue signals based on an ocean communication buoy further includes: when the first ad hoc network is generated, initially positioning each deployed ocean communication buoy and temporary base station to determine the initial position of each node in the first ad hoc network, and subsequently updating the position of each node according to the position change data of the node;

[0062] The beneficial effect of the above technical solution is: through the above technical solution, the positioning of each node is completed, providing data support for the subsequent positioning of the first device and the second device, and at the same time, reliable initial positioning is beneficial to improving the subsequent positioning accuracy of the first device and the second device.

[0063] In one embodiment, a method for transmitting underwater rescue signals based on an ocean communication buoy further includes: real-time positioning of the first device and the second device through location information of relevant ocean communication buoys and temporary base stations in the first ad hoc network;

[0064] The working principle and beneficial effects of the above technical solution are: the above technical solution is used to locate the rescuers and trapped persons. Due to the limitations of diving, the rescuers and trapped persons cannot go to deeper waters, so their underwater delay can usually be approximated as a fixed value for calculation.

[0065] In one embodiment, a method for transmitting underwater rescue signals based on an ocean communication buoy further includes: based on a first ad hoc network, obtaining a first positioning and a second positioning and displaying them to a decision maker at a temporary base station in combination with a relevant rescue system, and collecting decision opinions issued by the decision maker, and feeding them back to the rescuer using a communication connection;

[0066] The working principle and beneficial effects of the above technical solution are as follows: based on the first self-organizing network, the first positioning and the second positioning are obtained and displayed to the decision makers at the temporary base station in combination with the relevant rescue system. For example, the first positioning and the second positioning are obtained and displayed in real time on the rescue system display screen of the ship. At the same time, the relevant rescue system can be used to generate a rescue route for the decision makers to choose. The environmental factors required for the generation of the rescue route can usually be obtained by deploying ocean observation equipment in advance, and its underwater information transmission can use the first self-organizing network for data transmission. Finally, the decision opinions decided by the decision makers are determined, and the communication connection is used to provide real-time feedback to the rescuers to improve the rescue efficiency.

[0067] like Figure 3 As shown, in one embodiment, the ocean communication buoy further includes a false signal generating module;

[0068] When the first positioning of the target user cannot be monitored, it is determined that the first device is abnormal, and the ocean communication buoy closest to the target user before the first positioning disappears is obtained as the main buoy;

[0069] The false signal generation module of the main buoy performs the following operations:

[0070] S201, obtaining historical positioning information after the rescue command is triggered and before the first positioning disappears, and generating a historical trajectory;

[0071] S202, predicting the real-time location of the target user according to the historical trajectory to obtain a predicted location;

[0072] S203, generating a false signal according to the predicted positioning and transmitting it to other ocean communication buoys, a second device and a temporary base station;

[0073] At the same time, when any ocean communication buoy receives a false signal, the signal transmission direction is determined according to the predicted positioning of the false signal, and based on the signal transmission direction, a directional shortwave signal is transmitted; when the first device receives any directional shortwave signal, a corresponding response signal is returned according to the signal transmission path;

[0074] The working principle of the above technical solution is: in order to improve the robustness of the entire signal transmission system corresponding to the underwater rescue signal transmission method proposed in this application and to ensure the continuity of signal transmission, a marine communication buoy proposed in this application also has a false signal generation module; wherein, when the first positioning of the target user cannot be monitored, it is determined that there is an abnormality in the first device, and the abnormal conditions include multiple conditions, such as damage to the first device or the signal transmission distance is too far, etc. At this time, if the false signal generation module is not configured, the rescue operation ends here. Therefore, in order to improve the survival rate of the trapped persons, the distance from the target user to the target user is determined before the first positioning disappears. The nearest ocean communication buoy is used as the main buoy, and the false signal generation module of the main buoy is enabled at the same time. First, the historical positioning information after the rescue command is triggered and before the first positioning disappears is obtained to generate a historical trajectory. Then, the real-time positioning of the target user is predicted based on the historical trajectory to obtain the predicted positioning. The existing technology of this prediction method is relatively mature and will not be described here. Finally, based on the predicted positioning, a false signal is generated and transmitted to other ocean communication buoys, the second device and the temporary base station. This method ensures the continuity of the rescue signal transmission, provides rescuers with continuous and reliable rescue positioning, and increases the probability of trapped people being rescued.

[0075] In addition, considering the anomalies caused by the long signal transmission distance, when any ocean communication buoy receives a false signal, the original signal broadcasting method is modified to determine the signal transmission direction according to the predicted positioning of the false signal, and based on the signal transmission direction, a directional shortwave signal is transmitted to enhance the signal transmission distance and try to re-establish the connection with the first device; and when the first device receives any directional shortwave signal, it returns a corresponding response signal according to the signal transmission path, rejoins the first self-organizing network and feeds back its positioning, thereby enhancing the reliability of underwater signal transmission.

[0076] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A method for transmitting underwater rescue signals based on an ocean communication buoy, characterized in that: The ocean communication buoy includes a variable-length antenna, an antenna deployment and holding device, a shortwave communication module, a stabilization device, a power supply module, a high-frequency underwater acoustic communication module and a self-organizing network node assembly module; Among them, underwater rescue signal transmission based on ocean communication buoys includes: By using the self-organizing network node building module, a first self-organizing network consisting of a number of ocean communication buoys and temporary base stations is pre-built in the target sea area; When the target user is conducting activities in the target sea area, the first device is pre-configured to join the first ad hoc network; Monitor in real time through the first ad hoc network whether the target user triggers a rescue command; if so, obtain the first location of the target user in real time, and conduct communication connection by searching for the rescuer's signal in the target sea area through the first ad hoc network, and simultaneously locate the rescuer in real time to obtain the second location; Based on the communication connection, the first positioning and the second positioning are sent to the rescuer to complete the underwater rescue signal transmission.

2. The underwater rescue signal transmission method based on the ocean communication buoy according to claim 1 is characterized in that: Also includes: When it is monitored that the target user triggers a rescue command, a rescuer is assigned to carry out activities in the target sea area, and the second device is pre-configured before the activity to join the first self-organizing network.

3. The underwater rescue signal transmission method based on ocean communication buoy according to claim 1 is characterized in that: Also includes: Variable length antennas are used to transmit or receive shortwave signals; The antenna deployment and holding device includes an antenna storage and braking device, and an inflation and air pressure control device, which is used to store the side length antenna when it is not deployed, and to use the inflation and air pressure control device to deploy the variable length antenna to a preset length and maintain it when it is deployed, so as to adapt to different levels of sea conditions and achieve stable communication; Shortwave communication module, used to complete the coding and modulation of transmitted information, as well as the analysis and processing of received signals; Stabilizing device, used for steady-state control of ocean communication buoy on the sea surface; A power module, used for powering the ocean communication buoy; High-frequency underwater acoustic communication module, used to complete underwater communication; The self-organizing network node building module is used to connect all ocean communication buoys, temporary equipment and temporary base stations in the target sea area to build the first self-organizing network.

4. The underwater rescue signal transmission method based on ocean communication buoy according to claim 1 is characterized in that: Also includes: When the first ad hoc network is generated, each deployed ocean communication buoy and temporary base station is initially positioned to determine the initial position of each node in the first ad hoc network, and the position of each node is subsequently updated according to the node's position change data.

5. The underwater rescue signal transmission method based on ocean communication buoy according to claim 4 is characterized in that: Also includes: The first device and the second device are positioned in real time through the location information of relevant ocean communication buoys and temporary base stations in the first self-organizing network.

6. The underwater rescue signal transmission method based on ocean communication buoy according to claim 1 is characterized in that: Also includes: Based on the first self-organizing network, the first positioning and the second positioning are obtained and displayed to the decision makers in a temporary base station in combination with the relevant rescue system, and the decision opinions issued by the decision makers are collected and fed back to the rescuers through the communication connection.

7. The underwater rescue signal transmission method based on ocean communication buoy according to claim 1 is characterized in that: The ocean communication buoy also includes a false signal generation module; When the first positioning of the target user cannot be monitored, it is determined that the first device is abnormal, and the ocean communication buoy closest to the target user before the first positioning disappears is obtained as the main buoy; The false signal generation module of the main buoy performs the following operations: Obtain the historical positioning information after the rescue command is triggered and before the first positioning disappears, and generate a historical trajectory; Predict the real-time location of the target user based on the historical trajectory to obtain the predicted location; Based on the predicted positioning, a false signal is generated and transmitted to other ocean communication buoys, a second device, and a temporary base station.

8. The underwater rescue signal transmission method based on ocean communication buoy according to claim 7 is characterized in that: Also includes: When any ocean communication buoy receives a false signal, it determines the signal transmission direction according to the predicted positioning of the false signal, and transmits a directional shortwave signal based on the signal transmission direction; when the first device receives any directional shortwave signal, it returns a corresponding response signal according to the signal transmission path.

Images