Design of High-speed Data Acquisition System for High Frequency ultrasonic Radio-frequency echo signals

In this paper, a high-speed data transmission system for high-frequency ultrasonic radio frequency echo signals based on FPGA and a single-element high-frequency broadband transducer were designed. With the FPGA as the core control processor, it controlled the transmission and reception of ultrasound and the upload of radio frequency data through the USB3.0 interface. In the interactive display software interface of upper computer designed under the development environment of visual studio 2012, the waveform preview and storage of the original RF data received by the 50 MHz single element broadband transducer were completed. Through the sawtooth wave simulation experiment and the plexiglass ultrasonic echo radio frequency signal acquisition experiment, it was concluded that the radio frequency data transmitted by the experimental system to the host computer was correct. The experimental system had reasonable design, error-free signal transmission, and high integration. The written waveform preview interface of the upper computer application software could not only meet the experimental debugging of subsequent research, but also the stored raw radio frequency data in multiple formats satisfy the subsequent further scientific research.