Underwater life search and rescue system based on wireless sensor network

Abstract

The invention discloses an underwater life search and rescue system based on a wireless sensor network. The invention is characterized in that: the system comprises a control center, a buoy node device, a ship-borne base station and an underwater node device, wherein, the underwater node device transmits information to the buoy node device and the ship-borne base station in an underwater acoustic communication manner; and the buoy node device and the ship-borne base station respectively send the received information to the control center in a wireless communication manner. By utilizing the underwater life search and rescue system, position information of persons in danger can be rapidly and efficiently located when a ship is in danger, and the persons in danger can be searched and rescued immediately. In addition, the underwater life search and rescue system has the advantages of simple structure and low production cost.

Description

technical field [0001] The invention relates to an underwater life search and rescue system based on a wireless sensor network, which belongs to the field of wireless communication. Background technique [0002] The underwater wireless sensor network is composed of a large number of sensor nodes with computing and communication capabilities. Each node is distributed in a designated water area. It can form a network through self-organization and perform continuous collaborative monitoring tasks. The network has three-dimensional monitoring of the underwater environment. It is of great significance to search and rescue people in distress. Due to the complex and changeable environment and the harsh underwater communication conditions, it is impossible to use fixed or preset network facilities for communication; and the underwater sensor network, which does not rely on any fixed network facilities and can be quickly deployed, is undoubtedly It is the best choice for positioning...

AI Technical Summary

Problems solved by technology

Due to the various noises generated by waves, fish, ships, etc. in the water, the sound field in the water will be extremely chaotic, resulting in multi-path interference signals when the sound waves are transmitted in the water, making the received signal blurred, and the communication efficiency and quality must be low. affected

The current underwater positioning technology, such as my country's first underwater GPS high-precision positioning system, consists of GPS satellite constellations, differential GPS reference stations, more than four GPS buoys, underwater navigation transceivers installed on underwater targets or carriers, Composed of land-based or ship-based data processing and monitoring centers, water radio communication links, and underwater underwater acoustic communication links, the entire set of equipment is complex and suitable for planned hydrographic surveys, navigation and large-scale engineering operations.

However, considering the suddenness and time urgency of missing persons in water accidents, the system cannot be pre-equipped in the hands of each crew member and carried with them, and secondly, after the accident, it also needs a long time to prepare for the various components. Network construction often misses the best time for search and rescue, which is not conducive to the timely development of search and rescue work

Moreover, the cost of the whole set of equipment is also high, which is not conducive to large-scale promotion

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