【摘要】 在现代地震勘探中,可以通过采集人工地震波所携带的地下信息来分析地层结构从而寻找油、气等资源;由于地震勘探信号的动态范围很大,采用具有高动态范围的24位∑-ΔA/D CS5321/CS5322组件完成高精度数据采集,结合FPGA、FIFO存储器和嵌入式计算机模块DIMM-PC构成三通道并行数据采集系统,用于地震勘探数据采集,并给出了该系统的设计方法和测试结果,结果表明电路工作正确可靠,满足地震检测对系统总的动态范围的要求。更多还原

【Abstract】 In the modern seismographs,people can get the distribution of the stratigraphic structure by analyzing the seismic data carried by the artificial seismic wave to prospect oil-gas resource.For the high dynamic range of the seismic signal,a kind of high precision three- channel parallel seismic data acquisition system was mainly made up by 24-bitΣ-△Variable Bandwidth A/D Converter Chipset CS5321/ 22,FPGA,FIFO and DIMM-PC.The design method and test result of the system are given.The results of simulation on the hardware circuit proved this design efficient and can meet the whole dynamic range requirements for the Seismic Acquisition System very well.更多还原