Marine seismic prospecting towing cable data interface plugboard based on MicroTCA framework

Abstract

The present invention relates to a marine seismic prospecting towing cable data interface plugboard based on a MicroTCA framework, which comprises a towing cable interface module, a data processing module, a backboard bus interface module, an intelligent state management module, a programmable power module, an FMC interface, and a level conversion chip, a data processing FPGA, a memory unit, an AMC interface, a microcontroller chip, a voltage sensor, a current sensor, a temperature sensor, a programmable fan, an ID ROM chip, a non-programmable power chip, an output adjustable power chip, a programmable switch and a programmable resistor. Unlike the previous data interface plugboard, the marine seismic prospecting towing cable data interface plugboard based on the MicroTCA framework can meet the requirement for real-time large-scale seismic data processing of the long-distance marine seismic prospecting towing cable, the need to support multiple models of marine towing cable data interfaces, and the requirement for board-level intelligent state management.

Description

technical field [0001] The invention belongs to the field of marine seismic exploration equipment, in particular to a marine seismic exploration streamer data interface board based on a MicroTCA framework. Background technique [0002] In the field of marine seismic exploration, in order to obtain the seabed geological structure map of the measured ocean block, the marine seismic prospecting method is generally used to detect unknown ocean blocks. In this method, the operating ship continuously creates artificial seismic waves in the seawater while towing a plurality of ocean streamers in the ocean block to be tested, and the sensors and related electronic equipment distributed in the ocean streamers continuously transfer The collected seismic information is transmitted to the data processing equipment on board, and operators can obtain the seabed geological structure map of the measured ocean block by analyzing the artificial seismic data collected by the sensor array in th...

AI Technical Summary

Problems solved by technology

[0004] Existing marine seismic exploration streamer data acquisition systems are generally based on VME or CPCI architecture, with large chassis, weak backplane data exchange capability, system components do not support hot swap, high maintenance difficulty, and low reliability

The existing data interface board used in it is not only limited by the data processing capacity of the chassis backplane bandwidth (VME backplane bandwidth is up to 50MB / sec, CPCI backplane bandwidth is up to 500MB / sec), and cannot meet the long-distance marine seismic exploration drag The processing requirements of real-time large-volume seismic data of cable, and the lack of compatibility design of its data interface with the streamer, cannot meet the needs of the marine seismic exploration field for using the same type of data interface card to support multiple types of marine streamer for seismic exploration operations.

In addition, the existing ocean towline data interface card does not have the function of intelligent status management. During the exploration operation, the staff cannot remotely monitor the working status of the data interface card in real time (such as circuit board temperature, line voltage, heat dissipation, etc.) , power supply status, etc.), once one or several data interface cards in the data acquisition system fail to work normally due to unknown reasons, but the staff cannot realize this situation and continue to carry out exploration operations, the consequences will be disastrous

[0005] To sum up, the existing marine seismic data interface cards have weak data processing capabilities, do not support hot swapping, are difficult to maintain and low in reliability, and have poor compatibility with different types of tow cables. The demand for data acquisition equipment in the field of seismic exploration

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