Optimized Design of Multi-channel Isolated High-frequency Acquisition Module Based on FPGA
REN Yongfeng
PANG Yunfei
ZHAO Fengjin
Abstract：In order to implement a project of the data collection requirements,this paper designs a multi-channel isolation collection of data acquisition module for the frame.The main control chip selects Xilinx's Artix-7 series FPGA for modular design,using three AD conversion chips AD7621 for data collection and framing,and then sends the collected data to the ground test com-puter by the RS-422 transmitter,the upper computer software conducts data processing on the collected high-frequency signals.So it can achieve six channels of high-frequency signals with a sampling rate of 1 MHz acquisition function.After multiple verifications combined with the upper computer software,the system can complete the isolated collection with a sampling accuracy better than 1‰,realizing the sending and receiving zero error transmission through the LVDS interface.
Keywords：signal acquisitionisolation acquisitionhigh-frequency signal
Publication Date：2025-08-20
Online Publishing Date：2025-12-12(First online date of this platform, not the publication date of the document)
Pages：6( 84-88,122 )