Research And Design Of General Testing System For Seismic Data Acquisition Module

With the rapid development of economy,the exploitation and consumption of oil and gas resources are increasing,so is the exploration and development of oil and gas.At present,high-precision seismic exploration is the main method of oil and gas resources exploration.By collecting seismic data to analyze the formation structure,the exploration of oil and gas resources is realized.Among them,the front-end data acquisition module is an important part of seismic exploration equipment,which determines the performance of seismic exploration equipment to a large extent.With the progress of science and technology,the number of acquisition channels in seismic exploration equipment is increasing,and the number of acquisition boards is increasing.The traditional special-purpose test system can not meet the current needs of seismic exploration.Therefore,it is an urgent problem to develop a universal testing system applied in the field of seismic exploration,which can test different seismic exploration data acquisition modules in batches and provide simple and efficient testing tools and means.In order to solve these problems,based on the project of "Research on key technology and general platform of high-speed and reliable data transmission of deep-sea seismic streamer",this paper studies the general test of seismic data acquisition module.Firstly,the development history and research status of the current seismic exploration system and testing system at home and abroad,and the principle of seismic data acquisition module testing are investigated;then,the requirements of the data acquisition module testing system in the field of seismic exploration are analyzed,and the overall scheme is formulated;finally,a general data acquisition module testing system applied in the field of seismic exploration is designed.FPGA is the control core of the test system,and the analog-to-digital conversion of the signal is completed by driving the source to output the test waveform to the front-end data acquisition module.The converted data is transmitted to the upper computer software through USB bus for analysis and test,and the results are displayed.At the same time,based on ad7779 and ADS 1282 analog-to-digital conversion chip,this paper designs two kinds of data acquisition modules,and uses the designed universal test system to test.After experimental verification,the test system designed in this paper has achieved the design goal.