CN105634596A - Underwater visible light communication system and method - Google Patents

Abstract

The present application provides an underwater visible light communication system and method. The underwater visible light communication system includes: an underwater unmanned robot, an underwater backbone network node device, and a plurality of different underwater sensors; the underwater backbone network node device is connected with Each underwater sensor is connected through optical fiber communication; the underwater unmanned robot and the underwater backbone network node equipment are connected through visible light wireless communication. In this application, since the visible light wireless communication is less affected by the underwater environment, the transmission rate of the visible light wireless communication is relatively high underwater, so the information acquisition efficiency of the underwater unmanned robot is improved, thereby improving the underwater unmanned The timeliness of the robot feeding back underwater information to the shore base station.

Description

A system and method for underwater visible light communication

technical field

The present application relates to the communication field, and in particular to an underwater visible light communication system and method.

Background technique

The underwater sensor network system is mainly used in marine scientific data collection, pollution monitoring, marine exploration, disaster prevention, auxiliary navigation, underwater monitoring, etc. At present, the underwater sensor network system is composed of underwater unmanned robots and underwater wireless sensors. The underwater unmanned robots and underwater wireless sensors are connected by wireless communication. The underwater information is forwarded to the shore base station to realize the monitoring of underwater information.

Among them, the underwater unmanned robot and the underwater wireless sensor are connected through acoustic wireless communication, but due to the particularity of the underwater environment, the transmission speed of acoustic wireless communication is low underwater, resulting in the information acquisition efficiency of the underwater unmanned robot. Low.

Contents of the invention

In order to solve the above technical problems, the embodiment of the present application provides an underwater visible light communication system and method, so as to improve the information acquisition efficiency of the underwater unmanned robot, thereby improving the underwater information feedback of the underwater unmanned robot to the shore base station. For the purpose of timeliness, technical solutions are as follows:

An underwater visible light communication system, including: an underwater unmanned robot, an underwater backbone network node device, and a plurality of different underwater sensors;

The underwater backbone network node equipment is respectively connected to each of the underwater sensors through optical fiber communication;

The underwater unmanned robot communicates with the underwater backbone network node device through visible light wireless communication;

The underwater unmanned robot is used to send task allocation instructions to the underwater backbone network node equipment, and send information collection instructions to the underwater backbone network node equipment, and receive the underwater backbone network node equipment for The information collected by each of the underwater sensors sent by the information collection command;

The underwater backbone network node device is configured to forward the task allocation instruction to the corresponding underwater sensor, and obtain information collected by each of the underwater sensors, and when receiving the information collection instruction, send each The information collected by the underwater sensor is sent to the underwater unmanned robot;

The underwater sensor is used for collecting underwater information.

Preferably, the underwater backbone network node device is specifically configured to regularly acquire information collected by each of the underwater sensors.

Preferably, the underwater unmanned robot includes: a first visible light emitting device, a first visible light receiving device, a first driving circuit and a first receiving circuit;

The first drive circuit is configured to convert the electrical signal representing the task allocation instruction into a first optical signal, and convert the electrical signal representing the information collection instruction into a second optical signal;

The first visible light emitting device is configured to transmit the first optical signal and the second optical signal to the underwater backbone network node device;

The first visible light receiving device is configured to receive a third light signal representing information collected by each of the underwater sensors;

The first receiving circuit is configured to convert the third optical signal into an electrical signal;

The underwater backbone network node equipment includes: a second visible light emitting device, a second visible light receiving device, a second driving circuit and a second receiving circuit;

The second driving circuit is used to convert the electrical signal representing the information collected by each of the underwater sensors into the third optical signal;

The second visible light emitting device is used to emit the third optical signal to the underwater unmanned robot;

The second visible light receiving device is configured to receive the first light signal and the second light signal;

The second receiving circuit is configured to convert the first optical signal and the second optical signal into electrical signals respectively.

Preferably, both the first visible light emitting device and the second visible light emitting device are LED lamps;

Both the first visible light receiving device and the second visible light receiving device are photodetectors.

An underwater visible light communication method, based on an underwater visible light communication system, the underwater visible light communication system includes: an underwater unmanned robot, an underwater backbone network node device, and a plurality of different underwater sensors, the underwater backbone The network node device communicates with each of the underwater sensors through optical fiber communication, and the underwater unmanned robot communicates with the underwater backbone network node device through visible light wireless communication. The method includes:

The underwater backbone network node device receives the task allocation instruction sent by the underwater unmanned robot, and forwards the task allocation instruction to the corresponding underwater sensor;

The underwater backbone network node device acquires information collected by each of the underwater sensors;

When the underwater backbone network node device receives the information collection instruction sent by the underwater unmanned robot, it sends the information collected by each of the underwater sensors to the underwater unmanned robot.

Preferably, the underwater backbone network node device acquiring information collected by each of the underwater sensors includes:

The underwater backbone network node device regularly acquires information collected by each of the underwater sensors.

Preferably, the process of the underwater backbone network node device receiving the task assignment instruction sent by the underwater unmanned robot includes:

The underwater backbone network node device receives a first optical signal representing the task allocation instruction;

The underwater backbone network node device converts the first optical signal into an electrical signal representing the task allocation instruction.

Preferably, when the underwater backbone network node device receives the information collection instruction sent by the underwater unmanned robot, the process of sending the information collected by each of the underwater sensors to the underwater unmanned robot, include:

When the underwater backbone network node device receives the information collection instruction sent by the underwater unmanned robot, it converts the electrical signal representing the information collected by each of the underwater sensors into the third optical signal;

The underwater backbone network node device sends the third optical signal to the underwater unmanned robot.

Compared with the prior art, the beneficial effects of the present application are:

In this application, the underwater backbone network node device obtains the information collected by each underwater sensor through optical fiber communication. After the underwater backbone network node device obtains the signals collected by each underwater sensor, the underwater unmanned robot can wirelessly The communication receives the information collected by each underwater sensor sent by the underwater backbone network node equipment.

Since the visible light wireless communication is less affected by the underwater environment, the transmission rate of the visible light wireless communication is relatively high underwater, thus improving the information acquisition efficiency of the underwater unmanned robot, thereby improving the underwater information acquisition efficiency of the underwater unmanned robot. The timeliness of feedback to shore base stations.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is a schematic diagram of a logical structure of the underwater visible light communication system provided by the present application;

Fig. 2 is a schematic diagram of a logic structure of the underwater unmanned robot provided by the present application;

Fig. 3 is a schematic diagram of a logic structure of the underwater backbone network node equipment provided by the present application;

Fig. 4 is a working schematic diagram of the underwater visible light communication system provided by the present application;

Fig. 5 is a flow chart of the underwater visible light communication method provided by the present application;

Fig. 6 is a sub-flow chart of the underwater visible light communication method provided by the present application;

Fig. 7 is another sub-flow chart of the underwater visible light communication method provided by the present application.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Embodiment one

Please refer to Fig. 1, which shows a schematic diagram of the logical structure of the underwater visible light communication system provided by the present application. The underwater visible light communication system includes: an underwater unmanned robot 11, an underwater backbone network node device 12 and a plurality of different underwater sensors.

The underwater backbone network node device 12 communicates with each of the underwater sensors through optical fiber communication.

In this embodiment, since the sensors deployed underwater can collect surrounding information without autonomous movement, optical fibers are used to connect the underwater sensors to the underwater backbone network node device 12, so that the underwater backbone network node device 12 is connected to the Each of the underwater sensors is communicatively connected through optical fiber communication. Optical fiber transmission is less affected by the underwater environment, the information transmission rate between the underwater sensor and the underwater backbone network node device 12 is high, and the interference is small, and the underwater sensor no longer needs to perform wireless communication, which reduces the complexity of the underwater sensor .

The underwater unmanned robot 11 communicates with the underwater backbone network node device 12 through visible light wireless communication.

The underwater unmanned robot 11 is used to send task assignment instructions to the underwater backbone network node device 12, and send information collection instructions to the underwater backbone network node device 12, and receive the underwater backbone network node device 12. The information collected by each of the underwater sensors sent by the node device 12 in response to the information collection command.

In this embodiment, when the staff needs to collect the information of each underwater sensor at the bottom, the underwater unmanned robot 11 can be sent to dive into the bottom of the water, and the underwater unmanned robot 11 establishes visible light wireless communication with the underwater backbone network node device 12, And the underwater unmanned robot 11 sends a task allocation command to perform task allocation to the corresponding underwater sensors.

The underwater backbone network node device 12 is configured to forward the task allocation instruction to corresponding underwater sensors, and obtain information collected by each of the underwater sensors, and when receiving the information collection instruction, send The information collected by each of the underwater sensors is sent to the underwater unmanned robot 11;

The underwater sensor is used for collecting underwater information.

In this embodiment, the underwater sensor that receives the task assignment instruction executes the corresponding task according to the task assignment instruction.

In this application, the underwater backbone network node device 12 obtains the information collected by each underwater sensor through optical fiber communication. After the underwater backbone network node device 12 obtains the signals collected by each underwater sensor, the underwater unmanned robot 11 can The information collected by each underwater sensor sent by the underwater backbone network node device 12 is received through visible light wireless communication.

Since the visible light wireless communication is less affected by the underwater environment, the transmission rate of the visible light wireless communication is relatively high underwater, so the information acquisition efficiency of the underwater unmanned robot 11 is improved, thereby improving the ability of the underwater unmanned robot 11 to control the underwater environment. The timeliness of information feedback to shore base stations.

Further, in this embodiment, the underwater backbone network node device 12 may specifically be used to regularly acquire the information collected by each of the underwater sensors, after the underwater backbone network node device 12 obtains the information collected by each underwater sensor, The underwater unmanned robot 11 only needs to directly perform visible light wireless communication with the underwater backbone network node device 12, and receives the information collected by each underwater sensor sent by the underwater backbone network node device 12. The wireless connection shortens the total time of information acquisition, further improves the efficiency of information acquisition, and improves the timeliness of the underwater unmanned robot 11 feeding underwater information to the shore base station.

In this embodiment, the underwater backbone network node device 12 may specifically be used to regularly acquire information collected by each of the underwater sensors.

In the above-mentioned underwater visible light communication system, the underwater unmanned robot 11 specifically includes: a first visible light emitting device 111 , a first visible light receiving device 112 , a first driving circuit 113 and a first receiving circuit 114 , as shown in FIG. 2 .

The first driving circuit 113 is configured to convert the electrical signal representing the task allocation instruction into a first optical signal, and convert the electrical signal representing the information collection instruction into a second optical signal.

The first visible light transmitting device 111 is configured to transmit the first optical signal and the second optical signal to the underwater backbone network node device 12 .

In this embodiment, the first visible light emitting device 111 may specifically be an LED (Light-Emitting Diode, Light-Emitting Diode) lamp.

The first visible light receiving device 112 is configured to receive a third light signal representing information collected by each of the underwater sensors.

In this embodiment, the first visible light receiving device 112 may specifically be a photodetector.

The first receiving circuit 114 is configured to convert the third optical signal into an electrical signal.

In the above underwater visible light communication system, the underwater backbone network node device 12 includes: a second visible light emitting device 121 , a second visible light receiving device 122 , a second driving circuit 123 and a second receiving circuit 124 , as shown in FIG. 3 .

The second driving circuit 123 is configured to convert electrical signals representing information collected by each of the underwater sensors into the third optical signal.

The second visible light emitting device 121 is configured to emit the third light signal to the underwater unmanned robot 11 .

Wherein, the second visible light emitting device 121 may specifically be an LED lamp.

The second visible light receiving device 122 is configured to receive the first light signal and the second light signal.

Wherein, the second visible light receiving device 122 may specifically be a photodetector.

The second receiving circuit 124 is configured to convert the first optical signal and the second optical signal into electrical signals respectively.

Please refer to FIG. 4 , which shows a working diagram of an underwater visible light communication system. As shown in Figure 4, the underwater unmanned robot 11 communicates with the underwater backbone network node device 12 through visible light wireless communication, and the underwater backbone network node device 12 communicates with each underwater sensor through optical fiber communication. The LED lights of the underwater unmanned robot 11 are responsible for sending light signals, the photodetectors of the underwater unmanned robot 11 are responsible for receiving the light signals sent by the underwater backbone network node equipment 12, and the LED lights of the underwater backbone network node equipment 12 are responsible for sending light signals. The photodetector of the underwater backbone network node device 12 is responsible for receiving the optical signal sent by the underwater unmanned robot 11 .

Embodiment two

This embodiment provides an underwater visible light communication method, based on the underwater visible light communication system shown in Embodiment 1, please refer to FIG. 5 , which shows a flow chart of the underwater visible light communication method provided by this application. Can include the following steps:

Step S51: The underwater backbone network node device receives the task allocation instruction sent by the underwater unmanned robot, and forwards the task allocation instruction to the corresponding underwater sensor.

Step S52: The underwater backbone network node device obtains the information collected by each of the underwater sensors.

In this embodiment, the underwater backbone network node device acquiring the information collected by each of the underwater sensors may specifically be that the underwater backbone network node device regularly acquires the information collected by each of the underwater sensors.

Step S53: when the underwater backbone network node device receives the information collection instruction sent by the underwater unmanned robot, it sends the information collected by each of the underwater sensors to the underwater unmanned robot.

In this embodiment, the process of the underwater backbone network node device receiving the task assignment instruction sent by the underwater unmanned robot can refer to FIG. 6 for details, and may include the following steps:

Step S61: The underwater backbone network node device receives the first optical signal representing the task allocation instruction.

Step S62: The underwater backbone network node device converts the first optical signal into an electrical signal representing the task allocation instruction.

In this embodiment, when the underwater backbone network node device receives the information collection instruction sent by the underwater unmanned robot, the process of sending the information collected by each of the underwater sensors to the underwater unmanned robot Refer to Figure 7 for details, which may include the following steps:

Step S71: when the underwater backbone network node device receives the information collection instruction sent by the underwater unmanned robot, it converts the electrical signal representing the information collected by each of the underwater sensors into a third optical signal.

Step S72: The underwater backbone network node device sends the third optical signal to the underwater unmanned robot.

It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. For the same and similar parts in each embodiment, refer to each other, that is, Can. As for the device-type embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to part of the description of the method embodiments.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The underwater visible light communication system and method provided by this application have been introduced in detail above. In this paper, specific examples are used to illustrate the principle and implementation of this application. The description of the above embodiments is only used to help understand this application. method and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation and scope of application. In summary, the content of this specification should not be understood as Limitations on this Application.

Claims (8)

1. An underwater visible light communication system, comprising: an underwater unmanned robot, an underwater backbone network node device, and a plurality of different underwater sensors; The underwater backbone network node equipment is respectively connected to each of the underwater sensors through optical fiber communication; The underwater unmanned robot communicates with the underwater backbone network node device through visible light wireless communication; The underwater unmanned robot is used to send task allocation instructions to the underwater backbone network node equipment, and send information collection instructions to the underwater backbone network node equipment, and receive the underwater backbone network node equipment for The information collected by each of the underwater sensors sent by the information collection command; The underwater backbone network node device is configured to forward the task allocation instruction to the corresponding underwater sensor, and obtain information collected by each of the underwater sensors, and when receiving the information collection instruction, send each The information collected by the underwater sensor is sent to the underwater unmanned robot; The underwater sensor is used for collecting underwater information. 2 . The system according to claim 1 , wherein the underwater backbone network node device is specifically configured to regularly acquire information collected by each of the underwater sensors. 3 . 3. The system according to claim 1, wherein the underwater unmanned robot comprises: a first visible light emitting device, a first visible light receiving device, a first driving circuit and a first receiving circuit; The first drive circuit is configured to convert the electrical signal representing the task allocation instruction into a first optical signal, and convert the electrical signal representing the information collection instruction into a second optical signal; The first visible light emitting device is configured to transmit the first optical signal and the second optical signal to the underwater backbone network node device; The first visible light receiving device is configured to receive a third light signal representing information collected by each of the underwater sensors; The first receiving circuit is configured to convert the third optical signal into an electrical signal; The underwater backbone network node equipment includes: a second visible light emitting device, a second visible light receiving device, a second driving circuit and a second receiving circuit; The second driving circuit is used to convert the electrical signal representing the information collected by each of the underwater sensors into the third optical signal; The second visible light emitting device is used to emit the third optical signal to the underwater unmanned robot; The second visible light receiving device is configured to receive the first light signal and the second light signal; The second receiving circuit is configured to convert the first optical signal and the second optical signal into electrical signals respectively. 4. The system according to claim 3, wherein the first visible light emitting device and the second visible light emitting device are light-emitting diode (LED) lamps; Both the first visible light receiving device and the second visible light receiving device are photodetectors. 5. An underwater visible light communication method, characterized in that, based on an underwater visible light communication system, the underwater visible light communication system includes: an underwater unmanned robot, an underwater backbone network node device, and a plurality of different underwater sensors The underwater backbone network node device communicates with each of the underwater sensors through optical fiber communication, and the underwater unmanned robot communicates with the underwater backbone network node device through visible light wireless communication. Methods include: The underwater backbone network node device receives the task allocation instruction sent by the underwater unmanned robot, and forwards the task allocation instruction to the corresponding underwater sensor; The underwater backbone network node device acquires information collected by each of the underwater sensors; When the underwater backbone network node device receives the information collection instruction sent by the underwater unmanned robot, it sends the information collected by each of the underwater sensors to the underwater unmanned robot. 6. The method according to claim 5, wherein the acquisition of the underwater backbone network node equipment by the information collected by each of the underwater sensors comprises: The underwater backbone network node device regularly acquires information collected by each of the underwater sensors. 7. The method according to claim 5, wherein the process of receiving the task assignment instruction sent by the underwater unmanned robot by the underwater backbone network node device includes: The underwater backbone network node device receives a first optical signal representing the task allocation instruction; The underwater backbone network node device converts the first optical signal into an electrical signal representing the task allocation instruction. 8. The method according to claim 5, characterized in that, when the underwater backbone network node device receives the information collection instruction sent by the underwater unmanned robot, the information collected by each of the underwater sensors The process sent to the underwater unmanned robot includes: When the underwater backbone network node device receives the information collection instruction sent by the underwater unmanned robot, it converts the electrical signal representing the information collected by each of the underwater sensors into the third optical signal; The underwater backbone network node device sends the third optical signal to the underwater unmanned robot.