多通道可重构水声信号采集模块设计

针对水声信号探测系统的需求,设计一种多通道可重构且小体积高集成度的水声信号采集模块。根据性能指标要求和水声信号特点,提出采集模块总体设计方案,硬件方面加入可重构带通滤波器增强采集模块的通用性,采用基于IEEE 1588V2标准的精确时间同步协议方案,提高多模块分布式应用时的系统采集同步精度;开发基于QT的处理机显控软件,实现采集控制与数据实时回看。对采集模块性能进行测试,其结果表明,该水声数据采集模块能够满足设计需求,其已在某声纳工程项目中得到实际应用。

Design of multi-channel and reconfigurable data acquisition module for underwater signal

Aiming at the application demand in underwater acoustic signal detection systems,a multi-channel reconfigurable underwater acoustic signal acquisition module with small volume and high integration was presented.According to the perfor-mance requirements and the characteristics of the underwater acoustic signal,the overall design scheme was proposed,and a reconfigurable bandpass filter was added to the hardware to enhance the versatility of the acquisition module.High-accuracy synchronization sampling method among multiple distributed modules based on IEEE 1588V2 standard was adopted to improve the system synchronization sampling accuracy.The QT-based software was developed to realize acquisition control and real-time data review.The performance of the underwater acoustic signal acquisition module was tested.The results show that it can meet the design requirements.The method has been practically applied in a sonar project.