立体点阵式LED显示屏设计与实现

摘要

In order to meet the requirement of most applications and reduce design costs,a colorful cube LED dis⁃play device is designed. The light cube is consisted of 512 high-light led. The characters and graph is displayed by MCU control time of led light on and off which scan by surface. Scanning methods are analyzed and the gray-scale algorithm of PWM modulation is given,system design scheme and the hardware circuit are presented,software flow chart is given and the hardware product is debugged. The test results show that the device can clearly display letters and graph by 512 pixels,implementation 8 gray-scale control and making brilliant three-dimensional effect.%为满足某些实际应用场合对立体显示的需求，降低设计成本，设计了彩色立体LED显示屏。采用8×8×8共512个高亮LED灯组成正方体，通过单片机控制LED灯的亮灭时间，按面扫描，显示预设的文字和图形。分析了扫描方法并给出了PWM调制灰度算法，给出了系统设计方案和硬件原理图，制作出了硬件作品，进行了软件编程调试。实测结果表明：采用512个像素点，可清晰显示不同的图形、文字，实现了8级灰度控制，制作出绚丽的立体效果。