工业技术与职业教育

为进一步提升水听器的数据采集与处理能力，提出了一种基于TMS320C6748的自容式水听器。基于DSP强大的浮点数据运算能力，实现对水下环境信息的采集、存储与处理。为实现系统的功能需求，硬件电路方面设计了电源模块、ADC数据采集模块、数据存储模块以及启停模块；软件代码部分构建了FFT计算、PSD算法、ADC驱动与数据采集、定时启停等功能程序。最后，制作实验装置对系统的信号增益、系统功耗、PSD算法等进行验证。实验结果表明，测试效果良好，系统具有较高的可靠性，满足预设的功能需求。

To further improve the data acquisition and processing capabilities of hydrophones,the researchers developed a self-contained hydrophone system based on using TMS320C6748 DSP chip.By taking advantage of strong floating-point data computing power of DSP,the system can achieve the collection,storage and processing of underwater environmental information.To meet the needs mentioned above,the researchers devised modules of power,ADC data collection,data storage and start-stop in the aspect of hardware circuits.The researchers also designed related software programs,including FFT calculation,PSD algorithm,data collection driven by ADC and definite-time start-stop.In the end,the researchers made a prototype to verify whether the requirements can be fully fulfilled.For instance,the researchers conduct tests of signal amplification effect,system power consumption and PSD algorithm correction to the prototype.The experimental results show that the test effect is good,and the system has high reliability and meets the preset functional requirements.