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基于DSP的线列阵流噪声数据采集系统,针对拖曳线列阵声呐的特点,为了能测试到对其性能影响最大的流噪声,采用先进的DSP+CPLD结构,实现对多通道声呐信号的检测并对其分时采样,然后将其存储于SD卡中,而后通过USB与上位机通信实现数据的离线分析.该系统不仅可以用于线列阵流体噪声的数据的采集还可以用于一般工业测控对模拟信号的数据采集.这种可扩展性强、使用方便灵活、适用面广的数据采集系统是数据采集研究的方向,有广阔的应用前景.“,”According to the characteristic of the towed array and in order to test flow noise which has an strongest influence on performance of the towed array, the DSP-controlled data acquisition system with CPLD structure is designed to measure and take time-sharing samplings of multiple channel sonar signals, and save them into SD card. Then, it transmits data to PC by USB for off-line analysis. This data acquisition system could be applied flexibly to measure various signals in such tough environment as the towed array. In general, this expandable and adaptive data acquisition system is the future trend with promising application field.