Data transmission node for self-configured universal towed linear array

A technology of data transmission nodes and towed line arrays, applied in the field of sonar, can solve the problems of separate transmission of data and control commands, high memory capacity requirements, inability to achieve continuous transmission, etc., to achieve the effect of improving accuracy

Inactive Publication Date: 2010-02-10
INST OF ACOUSTICS CHINESE ACAD OF SCI
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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 circuit...

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  • Data transmission node for self-configured universal towed linear array

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Embodiment Construction

[0054]The present invention will be described below in conjunction with the accompanying drawings and specific embodiments.

[0055] figure 1 A block diagram of the data transmission node in the present invention is described. As can be seen from the figure, the present invention mainly is made up of following several parts circuits: main processor 101, CPLD logic circuit 102, Transceiver circuit 103, channel equalization circuit 104, transformer 105, EEPROM106, crystal oscillator 107, posture sensor interface circuit 108 and Data acquisition module interface circuit 109. Wherein the main processor 101 is the main control chip of the present invention, which is responsible for the work scheduling of the whole node; the CPLD logic circuit 102 is mainly used to realize logic control, to make up for the shortcoming of the main processor's lack of control ability, and to complete the data acquisition module simultaneously. Data reception; the Transceiver circuit 103 is used to c...

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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...

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Application Information

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IPC IPC(8): G01S7/52G01S15/00G01V1/22G01V1/38
Inventor 李淑秋张祥杜立君王福钋李文军杨光黄海宁张春华
Owner INST OF ACOUSTICS CHINESE ACAD OF SCI
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