Data transmission node for self-configured universal towed linear array

Abstract

The invention provides a data transmission node for a self-configured universal towed linear array, which comprises a main processor (101), a CPLD (complex programmable logic device) logic circuit (102), a transceiver circuit (103), a channel equalization circuit (104), a transformer (105), a clock signal source (107) and an interface circuit (109) for a data acquisition module. After a system ispowered up, the data transmission node can automatically complete the ad-hoc networking and configuration and locate failures in failed nodes by a self-checking functional block; additionally, the data transmission node serves the functions of I / O (input / output) controlling and resetting as well; and the invention can achieve the real-time data transmission of a great number of channels by cascading multiple nodes. The invention has the advantages that the size is small, so that application of thin-net and thick-net cables can be supported at the same time with the maximum data transmission rate reaching 150Mbps, and the requirements for the application of most towed linear arrays and towed float cables for seismic exploration can be satisfied owing to the universality thereof.

Description

technical field [0001] The present invention relates to underwater target detection and marine seismic survey in the field of sonar, in particular to an underwater high-speed, long-distance, distributed self-configured universal tow used for towed array sonar systems or seismic exploration towed floating cables The data transmission node of the line array. Background technique [0002] The low frequency and large aperture characteristics of the towed line array sonar make it one of the important means to solve the long-range detection of underwater targets and marine seismic survey, and the structural characteristics of the towed line array require that the data collected by the sensor must pass through high-speed , The long-distance underwater transmission can reach the data processor located on the water. Therefore, underwater high-speed data transmission technology becomes necessary. [0003] Early towed line array sonars usually use analog signals for data transmission...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of high-speed and long-distance data transmission of the towed line array sonar system and the underwater towed body part in the seismic exploration towed floating cable, aiming at the data transmission module protocol based on ATM technology with large protocol overhead, complex technology and low module price Expensive, separate transmission of data and control commands, other equipment such as underwater digital high-speed data transmission circuits lack of versatility, high requirements for memory capacity, large data transmission delays, and inability to effectively control the dry end, etc., and data transceiver modules The functions it has are obviously insufficient, and it is impossible to realize the shortcomings of continuous transmission and batch transmission that can distinguish different launch batches. O control function and reset function adopt self-defined network protocol, universal underwater high-speed data transmission node with controllable dry end

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