摘要
针对拖曳声呐阵的特点,为了能测试到对其性能影响最大的流噪声,采用DSP芯片TMS320VC5509A设计了一种高精度数据采集系统,克服了因采用"主处理器+SD卡控制器+USB控制器"方式,分别处理和传输数据造成的系统复杂、传输延时、稳定性差等缺点,且使用了CPLD芯片,解决了采集在水下声呐阵中不易控制的问题,这样使得整个系统占用资源少,易于日后扩展。该系统主要功能是采集由多路水听器检测到的线列阵流噪声信号,并将其存储于SD卡中,而后通过USB与上位机通信实现数据的离线分析。
According to the characteristic of the towed sonar array,this paper designs a high-precision data acquisition based on DSP chip which is TMS320VC5509A, in order to test flow noise which has an strongest influence on performance of the sonar array. This system is conciser,higher-speed and more stable than old methods,which are designed as ＂CPU ＋ SD card controller ＋ USB controller＂ model. Moreover,it solves problem which is data acquisition not being easy to control under water in the sonar array. Therefore, this system is conciser, expandable. The system converts sonar array flow noise signal from multi-channel sonar and save them into SD card. Then,it transmits data to PC by USB for off-line analysis.
出处
《舰船科学技术》
2009年第5期133-136,155,共5页
Ship Science and Technology
基金
国家自然科学基础研究项目资助(10772072)
