摘要
针对当前LED显示屏硬件成本高、体积大等问题,文中基于人眼视觉暂留效应设计一种LED旋转扫描显示系统。通过设计磁芯旋转变压器实现对转子电路的无线供电,其供电效率可达到90%以上,能够解决转子系统供电难的问题。其次,采用16只贴片LED设计旋转显示列,通过LED转动划过的痕迹在人眼中暂留的余晖效应实现画面显示,得出LED的数量显著减少,显示面积有所增大。系统还给出数据取模、数据查表、滚动显示等设计方法,实现多文字滚动显示效果。所设计系统选用高速增强型STC12C5A60S2单片机提高处理速度,以给用户带来较好的视觉体验。系统显示稳定,画面滚动效果良好,视角范围也得到提升,具有一定的娱乐性和实用性。
In allusion to the problems of high hardware cost and large volume of LED display screen,an LED rotary scanning display system is designed based on human visual persistence effect.The magnetic core rotary transformer is designed to realize the wireless power supply to the rotor circuit,whose power supply efficiency can reach more than 90%,which solves the difficulty of power supply to the rotor system.The rotating display column is designed with 16 paster LEDs.The image display is realized by means of the afterglow effect temporarily left in people′s eyes by the traces of LED rotation,which greatly reduces the number of LEDs and increases the display areas.The design methods of data modeling,data look⁃up table and rolling display are given.The effect of multi⁃text rolling display is realized.The high⁃speed enhanced STC12C5A60S2 single chip microcomputer is selected for the system to improve the processing speed and bring users a good visual experience.The display of the system is stable,the picture scrolling effect is good,and also the viewing angle range has been improved,which has a certain entertainment and practicability.
作者
田睿
侯雅雅
TIAN Rui;HOU Yaya(Five-year Schooling Center,Henan Polytechnic Institute,Nanyang 473009,China;School of Physics and Microelectronics,Zhengzhou University,Zhengzhou 450001,China)
出处
《现代电子技术》
2023年第12期63-67,共5页
Modern Electronics Technique
基金
河南省高等教育教学改革研究与实践项目(教高[2019]740号)。
关键词
LED显示
视觉暂留效应
旋转变压器
无线供电
电路设计
文字滚动显示
软件程序设计
LED display
visual persistence effect
rotary transformer
wireless power supply
circuit design
text rolling display
software program design
