彩色LED旋转显示屏的设计  

Design of a Color Rotary LED Screen Display

作　　者：沈杰[1] 李春生[1] 沙春芳[1] 王忠纯[1] 

机构地区：[1]盐城师范学院物理科学与电子技术学院,江苏盐城224002

出　　处：《电子科技》2014年第10期178-181,共4页Electronic Science and Technology

基　　金：2013年江苏省高等学校大学生实践创新训练计划基金资助项目(201310324015Z)

摘　　要：为解决普通LED旋转屏显示色彩单一的缺陷,根据时间混色法利用单片机和三色LED设计了一种4 096色LED旋转屏。该旋转屏上的像素颜色编码为12 bit数据,通过4种亮度不同的帧的叠加,实现RGB每种颜色的16级灰度;利用在相邻两列LED显示间隙插入黑时隙的方法,降低了LED显示屏横向显示拖影等问题。经过实测验证表明,系统稳定、显示效果良好。In order to solve the single-color defect of common rotary LED screen display,the paper presents a design of 4096 color LED POV based on MCU and three-color LED by the principle of temporal mixed color. The color of the pixels is coded with 12 binary digits,and each 16 gray-scale levels of R /G /B is achieved by superposition of 4 frames which have different brightnesses. In addition,the paper presents a way to mitigate the image trails by inserting a dark time slot between the time intervals of displaying two adjacent pixels. Experiments show that the system is stable and has good display effect.

关 键 词：LED旋转显示屏 三色LED STC12C5A60S2 时间混色 

分 类 号：TN873.93[电子电信—信息与通信工程] TP273[自动化与计算机技术—检测技术与自动化装置]