Ocean current generation based distributed acoustic observation system

Abstract

The invention discloses an ocean current generation based distributed acoustic observation system, the lower end of a main floating body of the system is connected with a multiconductor cable and a bearing steel cable, a floating ball group is added on the middle position of the bearing steel cable, the lower end of the bearing steel cable is connected with an acoustic release transponder, the lowend of the acoustic release transponder is tied with a gravity anchor, and multiple groups of data acquisition and processing units and an ocean current energy generator are respectively connected onthe bearing steel cable in a clamping way through a fastening piece. Each group of the data acquisition and processing unit comprises eight self-capacitance single channel acoustic acquisition instruments, one self-capacitance temperature and depth measurement instrument and one self-capacitance conductivity temperature depth measurement instrument to measure the ocean parameters like seawater temperature, conductivity, depth, and sea noise. The self-capacitance single channel acoustic acquisition instrument and the ocean current energy generator are respectively connected with a multiconductor cable through a watertight connector. The system uses ocean current energy to generate electricity, the electricity is supplied to equipment, and due to the adoption of an underwater minitype collector, each measurement instrument independently acquires, processes and stores information, so that the system can observe underwater for a long period of time.

Description

technical field [0001] The invention relates to a marine observation instrument, in particular to a marine instrument device for underwater long-term acoustic signal collection. Background technique [0002] As we all know, sound waves have the smallest propagation attenuation and the best propagation performance in water, and can effectively propagate over long distances. They are currently the most important information carrier for underwater target observation and marine environmental noise. With the enhancement of human research and development on the ocean, ocean acoustic observations in shallow seas are advancing towards fixed-point, long-term, continuous, multi-element, multi-layer and other requirements. This makes the ocean acoustic observation equipment must have multi-layer, continuous, and long-term reliable acoustic signal acquisition capabilities. In the past, marine acoustic observation equipment in shallow seas generally used submersible buoys. Submersible b...

AI Technical Summary

Problems solved by technology

[0004] In view of the centralized data acquisition and complex data interconnection of existing small acoustic observation equipment, and the system cannot work underwater for a long time, the present invention introduces a distributed acoustic observation system based on ocean current power generation, which uses ocean current energy to generate electricity to supply electrical energy to the equipment. The underwater micro-collector enables each measuring instrument to independently collect, process and store information, thus realizing a distributed acoustic observation system that can work underwater for a long time

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