基于FPGA和STM32的多通道超声信号同步采集系统设计

使用超声阵列探头进行无损检测时,为了保证检测的精度和准确性,检测系统需要对阵列探头各个通道的超声信号进行同步采集.该多通道超声信号同步采集系统以FPGA与STM32微处理器为核心,FPGA芯片负责数据的同步采集和缓存,最多可以进行32通道超声信号的同步采集,STM32作为系统主控芯片,负责发送控制信号和数据传输.该系统结合了FPGA和STM32微处理器的功能特点,使系统具有良好的工作性能,对各通道A/D进行并行控制,完成超声信号的同步采集,并将缓存的数据经由以太网接口传输到上位机进行保存、显示以及后续的数据处理.使用该系统对阵列探头的各个通道进行数据采集,采集的数据有很好的同步性,能够满足多通道超声检测数据同步采集的要求.

Design of multi channel ultrasonic signal synchronous acquisition system based on FPGA and STM32

When using ultrasonic array probes for nondestructive testing,in order to ensure the accuracy and accuracy of the detection,the detection system needs simultaneous acquisition of ultrasonic signals from each channel of the array probe.The multi-channel ultrasonic signal synchronous acquisition system is based on FPGA and STM32 microprocessor,FPGA chip is responsible for simultaneous data acquisition and cache,as the master chip of the system,STM32 is responsible for transmitting control signals and data transmission.the system could collect 32 channels of ultrasonic signals synchronously at most.The system combines the advantages of FPGA and STM32 microprocessors,it has good working performance,parallel control of each A/D channel,synchronous acquisition of ultrasonic signals,through the Ethernet interface,the data is transmitted to the host computer for storage,display and subsequent data processing.The system is used for data acquisition of each channel of the array probe,the data has good synchronization,and can meet the requirements of synchronous acquisition of ultrasonic testing data.