Seismic Data Acquisition System Design Based On FPGA

Oil is a strategic energy,related to the sustainable development of the national economy,so to strengthen the detection of oil energy development is of great significance.In recnt years,with the constant improvement of the geopgysical detection technology st home and abroad.Seismic exploration method as the oil exploration in the most effective physical detection methods,has been constant development and improvement.At the same time,with the constan development of electronics,communication and computer technology,Seismic exploration of electronic meauring equipmen,its performance has been significantly increased.At home and abroad in this paper,through the analysis of scismic exploration and the development trend of electronic measurement technology,combined with modern signal acquisition and processing technology,designed a seismic exploration data acquisition system based on FPGA.In this paper,design of seismic data acquisition system based on FPGA,is mainly composed of signal conditioning circuit,A/D conversion circuit,data storage circuit,logic control circuit based on FPGA and USB interface circuit.Signal conditioning circuit is completed the detection of weak scismic signal amplification,filtering.A/D sonversion adopts ADS1282 chip of TI company,completes the analog-to-digital conversion.FPGA using the US company's EP3C25Q240C8N Ateral chip,mainly to complete logic control scismic data acquisition system,including A/D conversion control module,data storage control module.USB interface control module,using Verilog HDL design.USB interface corcuit is mainly collected at the scene in order to be able to analyze and process data to the data processing center of the interface to transfer.Through the Quartus ? 10.1 integrated development environment,we have compiled and simulated the FPGA logic control module,and the results has verified the feasibility of the design,met the design requirements,and achieved the intended purpose.FPGA-based seismic data acquisition system,can upgrade and reconstruct the system without changing the hardware configuration,and it has many features,such as a short development cycle,application flexibility,and strong applicability.