基于FPGA的LED显示屏控制系统的设计与实现  

Design and implementation of LED display control system based on FPGA

作　　者：郑争兵[1] 赵峰[1] 

机构地区：[1]陕西理工学院物理与电信工程学院,陕西汉中723000

出　　处：《陕西理工学院学报（自然科学版）》2015年第2期25-29,共5页Journal of Shananxi University of Technology:Natural Science Edition

基　　金：国家自然科学基金资助项目(61401262);陕西理工学院科研计划资助项目(SLGKY14-06)

摘　　要：根据LED显示屏的工作原理,提出了一种基于FPGA的大屏幕LED图文显示屏控制系统设计方案。系统采用移位芯片74HC595构建驱动电路,通过串行方式输出驱动信号,利用FPGA构建核心控制电路,采用Verilog HDL语言编写程序,完成显示汉字数据的读出,按照串行方式产生行、列扫描信号和控制信号,动态扫描并驱动LED显示屏。实验测试结果表明:系统可以实现汉字滚动显示,整个系统外围电路简单,易于扩展。According to the working principle of LED display,a design scheme of large screen LED display control system based on FPGA was proposed. The driver circuit was built by the shift chip 74HC595 to generat the drive signals through the serial output mode. The core control circuit was built by FPGA and the reading of Chinese characters data was completed by using the Verilog HDL language to write program. Row and column scanning signal and the control signal were generated on the basis of the serial way,and then the dynamic scanning and driving LED led display was performed. The experimental results show that： the system can achieve the Chinese characters scrolling display,and the peripheral circuits of the whole system are simple and easy to expand.

关 键 词：现场可编程门阵列 LED显示屏 硬件描述语言 LED驱动电路 

分 类 号：TN873[电子电信—信息与通信工程]