基于STM32的便携式混合信号示波器设计

Design of Portable Mixed Signal Oscilloscope Based on STM32

利用STM32处理器设计了一种适用于工程实践、教学展示的便携式混合信号示波器。作为示波器的同时,还具有逻辑分析功能。所设计的系统通过下位机采集电信号,经USB线将数据发送至上位机软件解码画出其波形图。下位机的工作模式可在示波器模式与逻辑分析模式之间切换,上位机软件基于Qt跨平台应用程序开发框架,可在各种桌面操作系统和嵌入式操作系统上运行。具有自动模式,可对波形的显示进行自动调整。也可根据使用者的需求,手动调整显示的周期、幅值等参数。

This paper collects the electrical signal through the lower computer,and sends the data through the USB to the upper computer software to decode and draw the waveform.The lower computer's work mode can switch between oscilloscope mode and logical analysis mode.The upper computer software is based on the Qt cross-platform application development framework which can run on various desktop operating systems and embedded operating systems.This design has the automatic mode,and can adjust the waveform display by itself.