Master station of geophysical exploration data acquisition device

Abstract

The invention discloses a master station of a geophysical exploration data acquisition device. The master station comprises a filed programmable gate array, a double data rate (DDR) data cache interface, an explosion machine interface, a lower-level system interface module and a data uploading interface module. The DDR data cache interface, the explosion machine interface, the lower-level system interface unit and the data uploading interface module are connected with the filed programmable gate array. The master station is a hardware implementation mode and is high in instantaneity, compact in structure and small in area, modularization can be carried out on internal driving logic of the DDR data cache interface, expansibility is high, the DDR data cache interface and the data uploading interface module can both keep unchanged basically for different seismic prospecting devices, reuse of the master station can be carried out by changing the lower-level system interface module, flexibility is high, the whole master station does not need supporting through an operating system, and complexity is relatively low.

Description

[0001] technical field [0002] The invention relates to a seismic data acquisition and transmission system, in particular to a master control station of a geophysical exploration data acquisition instrument. Background technique [0003] At present, the most advanced data collection system in seismic exploration instruments at home and abroad is the 428 series land seismic data collection system of the French company Sercel, CNOOC Offshore Seismic Data Collection System - "Hailiang" system, PetroChina ES109 million channel land seismograph system etc. [0004] The French company Sercel has accumulated many years of experience in the development of land seismic instruments. Its latest 428 series is improved on the basis of its 408 and has more powerful functions. The main control board (called the central unit) still adopts the server / client architecture. Among them, the server completes the summary function of the data collected by the entire system, and outputs the summa...

AI Technical Summary

Problems solved by technology

This structure has greater complexity, requires operating system support, and has poor scalability. It is also usually only suitable for large-scale seismic exploration systems.

[0006] CNPC's ES109 10,000-channel onshore seismic summarization system adopts the similar structure of CNOOC's summarization system, which also has the characteristics of poor scalability, large volume, and only suitable for large-scale seismic exploration systems

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