基于FPGA与Modbus的便携式信号源设计  

Design of Portable Signal Source Based on FPGA and Modbus

作　　者：江蔚 李森 袁强 唐建 Jiang Wei;Li Sen;Yuan Qiang;Tang Jian(No.4 PLA Presentation Office in Chongqing District,PLA Representation Bureau in Chongqing,Army Equipment Department,Chonagqing 400060,China;Department of Special Computer,Automation Research Institute Co.,Ltd.of China South Industries Group Corporation,Mianyang 621000,China)

机构地区：[1]陆军装备部驻重庆地区军事代表局驻重庆地区第四军事代表室,重庆400060 [2]中国兵器装备集团自动化研究所有限公司特种计算机事业部,四川绵阳621000

出　　处：《兵工自动化》2024年第4期62-67,共6页Ordnance Industry Automation

摘　　要：针对便携式、小型化与低功耗的需求,采用可编程逻辑器件FPGA作为主控制器,设计一款便携式双通道信号源。采用CORDIC算法实现DDS正弦信号的产生,输出2路幅频相连续可调的正弦信号;利用智能触控屏设计信号源的人机交互接口,对信号源参数进行配置与实时显示;触控屏与FPGA之间采用Modbus RTU协议进行通信。实际测试结果表明:该信号源输出的正弦信号频率稳定性好,相位、幅值调节准确性好,能够满足测试设备的需求。In response to the requirements of portability,miniaturization,and low power consumption,a portable dual channel signal source is designed using a programmable logic device FPGA as the main controller.Adopting the CORDIC algorithm to generate DDS sine signals,outputting two continuously adjustable amplitude frequency phase sine signals;Design a human-machine interaction interface for the signal source using an intelligent touch screen,configure and display the signal source parameters in real-time;The touch screen communicates with FPGA using Modbus RTU protocol.Through practical testing,the results show that the sine signal output by this signal source has good frequency stability,good accuracy in adjusting phase and amplitude,and can meet the requirements of testing equipment.

关 键 词：FPGA CORDIC DDS Modbus RTU 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]