基于STM32F7的可编程电源显示系统设计与实现

王鹏举; 何丰; 陈国平; 管春; 张祥

doi:10.37188/CJLCD.2020-0344

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基于STM32F7的可编程电源显示系统设计与实现

驱动与控制 | 更新时间：2021-07-13

- 基于STM32F7的可编程电源显示系统设计与实现
- Design and implementation of programmable power display system based on STM32F7
- 液晶与显示 2021年36卷第7期页码：973-982
- 作者机构：
  
  重庆邮电大学光电工程学院, 重庆 400065
- 作者简介：
  
  [ "王鹏举(1995-)，男，四川广安人，硕士研究生，2018年于重庆科技学院获得学士学位，研究方向为电子新技术及应用。E-mail: 1002359883@qq.com" ]
  [ "陈国平(1976-)，男，重庆合川人，博士，教授，2009年于电子科技大学获得博士学位，主要从事嵌入式技术与应用方面的研究。E-mail: chengp@cqupt.edu.cn" ]
- 基金信息：
  
  国家自然科学基金(61671091)
- DOI：10.37188/CJLCD.2020-0344
  中图分类号： TP334
- 收稿日期：2020-12-12，
  
  修回日期：2021-03-10，
  
  纸质出版日期：2021-07
- 稿件说明：
移动端阅览
王鹏举, 何丰, 陈国平, 等. 基于STM32F7的可编程电源显示系统设计与实现[J]. 液晶与显示, 2021,36(7):973-982.

Peng-ju WANG, Feng HE, Guo-ping CHEN, et al. Design and implementation of programmable power display system based on STM32F7[J]. Chinese journal of liquid crystals and displays, 2021, 36(7): 973-982.
王鹏举, 何丰, 陈国平, 等. 基于STM32F7的可编程电源显示系统设计与实现[J]. 液晶与显示, 2021,36(7):973-982. DOI： 10.37188/CJLCD.2020-0344.

Peng-ju WANG, Feng HE, Guo-ping CHEN, et al. Design and implementation of programmable power display system based on STM32F7[J]. Chinese journal of liquid crystals and displays, 2021, 36(7): 973-982. DOI： 10.37188/CJLCD.2020-0344.

摘要

采用机械按键编程方式的直流稳压电源存在按键易磨损、电路构成复杂等问题。为解决上述问题，设计了一种基于STM32F7的可编程数字电源TFT液晶屏触摸显示系统。该系统的硬件由STM32F7处理器、TFT液晶触摸屏、SDRAM芯片、电源模块组成，STM32F7用于驱动TFT液晶屏，并通过LTDC扩展外部SDRAM作为显存，电源模块为显示屏提供背光电压。软件利用FreeRTOS实时操作系统管理调度系统任务，并利用emWin进行图形界面设计，采用DMA方式读取数据。该显示系统电路简单，显示性能稳定可靠，可对电源系统进行触摸控制。实验结果表明：该系统显示效果清晰，控制响应快，能对电源系统进行实时控制和监测显示。该系统利用TFT触摸屏实现了可编程电源的人机交互功能，为TFT触摸屏在电源领域的应用提供了参考。

Abstract

The direct current regulated power supply adopting the mechanical buttons programming mode has problems

such as easy wear of buttons and complex circuit composition. To solve the above problems

a system is designed with the programmable digital power supply TFT liquid crystal display (LCD) screen touch display based on STM32F7. In terms of the hardware of the system

it is composed of an STM32F7 processor

TFT LCD touch screen

SDRAM chip

and power supply module. STM32F7 is used to drive TFT LCD screen and to expand external SDRAM as video memory through LTDC

and the power supply module provides backlight voltage power for the display screen. The software uses the real-time operating system of FreeRTOS for managing and dispatching system tasks

utilizes emWin for interface design

and adopts DMA pattern to read data. The display system has a simple circuit

stable and reliable display performance

and can control the power system by touching. The experimental results show that the system has a clear display effect

fast control and response. Additionally

the system realizes the human-computer interaction function of the programmable power supply by utilizing the TFT touch screen

thereby providing a reference for the application of the TFT touch screen in the power supply field.

关键词

Keywords

references

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