高速多通道地震数据采集处理系统  

Design of Acquiring and Processing System for Seismic Data Based on High Speed and MultiChannels

作　　者：葛维亮[1] 庹先国[1] 李怀良[1] 王洪辉[1] 张赓[1] 杜勇[1] 

机构地区：[1]成都理工大学信息科学与技术学院,四川成都610059

出　　处：《仪表技术与传感器》2011年第3期61-63,共3页Instrument Technique and Sensor

基　　金：国家杰出青年科学基金(41025015);地质灾害防治与地质环境保护国家重点实验室基金(SKLGP2009Z007);成都市科技攻关计划基金(10GGYB323GX-023)

摘　　要：介绍了一种高速多通道数据采集与处理系统,系统以FPGA为核心,通过SPI总线控制四通道24位高精度A/D转换器ADS1256实现地震数据的分时采集,通道分时切换速度仅为320 ns,保证了多道数据采集的同步性。同时结合FPGA高速的处理能力,实现对地震数据多参数可调的实时滤波处理及存储,避免了冗余数据的存储。该系统有效提高了地震数据的处理速度,降低了开发成本,应用前景较好。This paper introduced the acquiring and processing system for seismic data based on high speed and multi-channels.The system took the FPGA as the core,and acquired the seismic data at different times with SPI（serial peripheral interface） bus,which controlled the analog to digital converter ADS1256 with 24 bit high precision and 4 data acquiring channels.The system only needs 320 ns to switch the channel,ensure the synchronize of data acquisition with multi-channels.With the high speed of FPGA,the filter with many parameters,immediate filtering processing and storage are achieved,avoids the redundancy data storage.The system can improve the speed of processing for seismic data,reduce the development costs.Therefore,the project has a better prospect.

关 键 词：地震数据采集 高精度 ADS1256 FPGA 滤波器 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]