针对实时声源定位、超声无损检测等需求,设计了基于Zynq的高速声场信号采集与处理系统。该系统以Zynq7000系列SoC为主控芯片,首先以其PL(可编程逻辑)资源设计高速ADC采集接口、DMA存储和高阶自适应降噪模块;以其PS资源开发千兆以太网传输模块和外部控制模块。然后进行硬件设计,完成LVDS传输协议的四通道、50 MHz采样率的高速声信号采集处理系统。通过仿真及实验验证表明,系统满足实时性需求,具有高速采集精确、实时片上降噪、功耗低等优点,在实时声源定位及超声检测等领域有广阔应用前景。

Aiming at the needs of real-time sound source localization and ultrasonic testing, a high-speed acoustic signal acquisition and processing system based on Zynq is designed.The system uses Zynq-7000 series SoC as the main control chip, and uses its PL (Programmable Logic) resources to design an acquisition interface circuit, DMA storage and a high-order on-chip adaptive filtering algorithm module.Use its PS (ARM processing system) resources to develop the Ethernet transmission part, and external control module.Then carry out hardware design to complete the four-channel 50 MHz sampling rate high-speed acoustic signal acquisition and processing system of the LVDS transmission protocol.The system has been verified by simulation and experiments.It meets real-time requirements.It has the advantages of fast processing speed, low power consumption.It has broad application prospects in the field of real-time sound source localization and ultrasonic testing.