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.%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.
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