基于FPGA的高速声信号采集存储系统

摘要

在地震、气象预报和航空航天等领域里,现场信号具有非常重要的作用.在传感器阵列定位系统中,现场声信号采集存储的实时性与高效性尤为关键.鉴于此,构建了基于FPGA的高速声信号采集存储系统,并详细论述了各个模块的设计方法和控制流程,在ISE中完成设计与仿真.实验结果表明,该系统能够可靠地对多路声信号进行采集,实时性较好且运行稳定,采样精度高达±1LSB.%In domains such as earthquakes, meteorology and aerospace , signals on spot is playing an important role.In acoustic location systems,the timeliness and effcciency of acquisition of acoustic signals is especially essential.Therefore, high speed of acoustic signal acquisition system based on FPGA was established, the design method and controlling flow of each module were discussed in detail.Software design and system simulation were completed in the compilation of ISE.The experiments and results all show that the system can collect multi-channel acoustic signals reliably and steadily and has a good real-time performance, sampling resolution can reach to ± LSB.