CN103546182A - An underwater sensor network and its node device - Google Patents

Abstract

The present invention relates to an underwater sensor network and its node device. The node device includes a node head and a plurality of sensing modules, and the plurality of sensing modules are connected to each other and connected to the node head; the node head includes The node head support and the drive engine module installed on the node head support; the drive engine module is connected to the bottom of the node head support through a central axis, and can rotate around the central axis, and a propulsion device is installed on the side of the drive engine module. The underwater sensor network and its node devices provided by the present invention have autonomous capabilities, can supplement energy through solar energy, can be deployed underwater for a long time, and can adapt to complex water environment; solve the difficulties in deployment and maintenance of underwater sensor networks and the difficulty of obtaining energy.

Description

An underwater sensor network and its node device

technical field

The invention relates to the field of underwater sensors, in particular to an underwater sensor network and a node device thereof.

Background technique

The underwater sensor network works in the underwater environment and consists of multiple node devices. The main task of the node device is to collect and transmit target data. In addition, the node device must also have airtightness to adapt to the underwater environment.

Node devices generally include surface nodes and underwater nodes. The surface node usually acts as a base station node, used to receive the data collected by the underwater node, and at the same time transmit the data to the land base station through the mutual communication between the surface nodes of multiple node devices. The underwater node is mainly responsible for collecting sensitive data in the monitoring area, and transmitting the data to the surface base station node through cooperation with adjacent node devices.

In current applications, underwater nodes generally control their own positions through anchor chains or buoys. The position of node devices changes with the flow of water. The relative positions of each node device are completely random. Once the entire network is deployed, it is very difficult. Manual intervention is not convenient for installation and maintenance. On the other hand, the current node devices are almost all powered by batteries, and the batteries carry limited power, which cannot meet long-term deployment and repeated use. Once a node loses power supply, it is difficult to recycle and reuse the node.

Contents of the invention

The purpose of the present invention is to provide an underwater sensor network with self-government and energy self-acquisition capabilities and its node device, so as to solve the problems of difficult deployment and maintenance of the underwater sensor network and difficult energy acquisition.

To achieve the above object, the present invention adopts the following technical solutions:

A node device of an underwater sensor network, comprising a node head and a plurality of sensing modules, the plurality of sensing modules are connected to each other and connected to the node head; the node head includes a node head bracket and is installed on the node head The drive engine module on the bracket; the drive engine module is connected to the bottom of the node head support through a central axis, and can rotate around the central axis, and a propulsion device is installed on the side of the drive engine module.

The propulsion device is a propeller.

The plurality of sensing modules are connected to each other through a communication cable to realize communication, and are connected to the node head through a communication cable.

The node head also includes a vertical position control module installed on the node head bracket, the vertical position control module includes an interconnected water pump and an air bag, the air bag is filled with gas, and the water pump is used to fill the air bag with water Or pump water from the bladder.

The node head also includes a power supply module installed on the node head bracket, the power supply module includes a main power supply module and an auxiliary power supply module connected to each other, the main power supply module includes at least one storage battery, and the auxiliary power supply module includes at least one solar panel.

The main power supply module includes two storage batteries, the charging and discharging circuits of the two storage batteries are independent from each other, and discharge and charge are performed in turn.

The solar panel of the auxiliary power supply module can be folded or telescopically installed on the node head support.

The node head also includes a communication module and a data processing module installed on the node head support.

The central axis is hollow, and the communication cables connect multiple sensing modules in series in sequence, pass through the central axis, and connect to the data processing module in the node head bracket.

An underwater sensor network includes a plurality of above-mentioned node devices.

An underwater sensor network and its node device provided by the present invention can move underwater by driving the engine module, and can float up and down through the vertical position control module. On the premise of controlling the cost of the node device, the cost of the node device is effectively improved. Underwater performance and application capabilities in real environments. Compared with the prior art, the underwater sensor network and its node devices provided by the present invention have autonomous capabilities, can supplement energy through solar energy, can be deployed underwater for a long time, and can adapt to complex water environment; The deployment and maintenance of sensor networks are difficult and energy acquisition is difficult.

Description of drawings

FIG. 1 is a schematic structural diagram of a node device of an underwater sensor network provided by an embodiment of the present invention.

Detailed ways

The content of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, an embodiment of the present invention provides a node device of an underwater sensor network, which includes a node head and a plurality of sensing modules, and the plurality of sensing modules are connected to each other through high-strength communication cables to achieve communication , and connect to the node head.

The node head is the main functional part of the node device. Specifically, the node head includes a node head support and a drive engine module, a power supply module, a vertical position control module, a data processing module and a communication module installed on the node head support.

The driving engine module is connected to the bottom of the node support through a central shaft, and the driving engine module can rotate around the central shaft. A propeller is installed on the driving engine module, and the node device can be pushed to move in the water by driving the propeller on the engine module; by rotating the driving engine module on the central axis, the orientation of the propeller can be adjusted, and then the moving direction of the node device can be adjusted.

The vertical position control module is installed on the top of the node head bracket and consists of a rubber air bag and a micro water pump. The rubber airbag and the micro water pump are connected with each other, the rubber air bag is filled with gas, and the micro water pump is used for filling water into the rubber air bag or extracting water from the rubber air bag. The water volume in the rubber air bag is controlled by the micro water pump to adjust the buoyancy of the rubber air bag, thereby adjusting the vertical position of the node device in the water area.

The driving engine module and the vertical position control module enable the node device to have higher autonomy performance, and enable the node device to be recycled and reused, which greatly saves the cost.

The power supply module includes a main power supply module and an auxiliary power supply module connected to each other. The main power supply module includes at least one storage battery, and the auxiliary power supply module includes at least one solar panel. The solar battery panel is connected with the storage battery for charging the storage battery.

In the embodiment of the present invention, the auxiliary power supply module includes two solar panels, and the two solar panels can be folded or telescopically installed symmetrically on both sides of the node bracket; when the node bracket floats on the water surface , the solar cell panel is unfolded for charging; when the node head support is submerged in water, the solar cell panel is folded or shrunk in the node head support to reduce the movement resistance of the node device.

In the embodiment of the present invention, the main power supply module includes a first battery board and a second battery board, and the first battery board and the second battery board are respectively fixed above and below the node bracket, and the charging of the two battery boards The discharge circuits are independent of each other and discharge and charge in turn. Compared with the prior art, the embodiment of the present invention has a more durable power supply and is more suitable for long-term deployment.

The data processing module and the communication module are hermetically installed in the node head bracket. The data processing module is used for collecting and processing the data transmitted by the sensing module through the communication cable. The communication module includes an underwater acoustic communication module and a wireless electromagnetic wave communication module, which are used to realize data communication with other node devices or with communication base stations.

As an improvement, the central shaft is hollow, and the communication cable connected to the sensing module passes through the central shaft and is connected to the data processing module in the node head support. The data collected by the sensing module is directly transmitted to the data processing module to complete the underwater data collection. Different from the existing design that integrates the sensing module of the node device with other core modules, the embodiment of the present invention connects multiple sensing modules to the node head through a high-strength communication cable, so that a node device can carry Multiple sensing modules are deployed into a larger monitoring area, thereby expanding the monitoring area of a single node device.

An underwater sensor network and its node device provided by the present invention can move underwater by driving the engine module, and can float up and down through the vertical position control module. On the premise of controlling the cost of the node device, the cost of the node device is effectively improved. Underwater performance and application capabilities in real environments. Compared with the prior art, the underwater sensor network and its node devices provided by the present invention have autonomous capabilities, can supplement energy through solar energy, can be deployed underwater for a long time, and can adapt to complex water environment; The deployment and maintenance of sensor networks are difficult and energy acquisition is difficult.

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. a node apparatus for underwater sensor network, is characterized in that, comprises node head and a plurality of sensing module, and described a plurality of sensing modules interconnect, and is connected on node head; Described node head comprises node head bracket and is installed on the driving engine modules on node head bracket; Described driving engine modules is connected in the bottom of node head bracket by a central shaft, and can rotate around central shaft, drives the side of engine modules that propulsion plant is installed.

2. node apparatus according to claim 1, is characterized in that, described propulsion plant is screw.

3. node apparatus according to claim 1, is characterized in that, described a plurality of sensing modules are interconnected and realized communication by telecommunication cable, and are connected to node head by telecommunication cable.

4. node apparatus according to claim 1, it is characterized in that, described node head also comprises the upright position control module being installed on node head bracket, described upright position control module comprises interconnective water pump and air bag, in described air bag, be filled with gas, described water pump is for being filled with water or extracting water out from air bag to air bag.

5. node apparatus according to claim 1, it is characterized in that, described node head also comprises the supply module being installed on node head bracket, described supply module comprises interconnective main supply module and auxiliary power supply module, described main supply module comprises at least one storage battery, and described auxiliary power supply module comprises at least one solar panel.

6. node apparatus according to claim 5, is characterized in that, described main supply module comprises two storage batterys, and the charging and discharging circuit of described two storage batterys is independent of one another, discharges in turn and charging.

7. node apparatus according to claim 5, is characterized in that, the collapsible or telescopically of the solar panel of described auxiliary power supply module is arranged on node head bracket.

8. node apparatus according to claim 1, is characterized in that, described node head also comprises communication module and the data processing module being installed on node head bracket.

9. node apparatus according to claim 8, is characterized in that, described central shaft is hollow, and telecommunication cable is connected a plurality of sensing modules successively, and through central shaft, is connected to the data processing module in node head bracket.

10. a underwater sensor network, is characterized in that, comprises the arbitrary described node apparatus of a plurality of claims 1 to 9.

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