基于无线传输的 LED 点阵显示控制系统  

LED Dot Matrix Display Contr ol System Based on Wireless Transmission

作　　者：胡雪花 郝敏钗 王丽佳 HU Xue-hua;HAO Min-chai;WANG Li-jia(Department of Intelligent Manufacturing,Hebei Polytechnic University,Shijiazhuang 050091,China)

机构地区：[1]河北工业职业技术大学智能智造系,河北石家庄050091

出　　处：《山东工业技术》2021年第4期119-123,共5页Journal of Shandong Industrial Technology

基　　金：河北工业职业技术学院院级自然科学课题(zky2020003)。

摘　　要：采用无线传输技术能够更便捷、灵活地更新LED点阵屏的显示信息,有利于拓展LED点阵屏的应用范围。上位机程序采用可视化较强的Visual Basic语言来编写,将汉字转换为点阵显示数据并通过串口发送给下位机。下位机以STC12C5A60S2单片机作为主控制模块,采用5片AT24C02外部存储器存储接收到的点阵数据,利用74HC154芯片进行行扫描,利用8片74HC595进行列驱动将信息显示在16×64的点阵LED显示屏上。串口通信部分采用NRF24L01无线传送模块传输点阵数据,实现了无线更新LED点阵显示信息的目的,方便快捷,且外部存储器掉电数据不丢失,使得系统稳定可靠。Using wireless transmission technology can update the display information of LED dot matrix screen more conveniently and flexibly,which is conducive to expanding the application range of LED dot matrix screen.The upper computer program is written by Visual Basic language with strong visualization,and the Chinese characters are converted into dot matrix display data and sent to the lower computer through the serial port.The lower computer uses STC12C5A60S2 microcontroller as the main control module,uses 5 AT24C02 external memory to store the received matrix data,uses 274HC138 chipsets to synthesizing 4-16 line decoder for line scanning.874HC595 column drivers are used to display information on a 16×64 dot matrix LED display.The nRF24L01 wireless transmission module is used in the serial communication part to transmit lattice data,which realizes the purpose of updating the LED lattice display information wirelessly.It is convenient and fast,and the power down data of external memory is not lost,making the system stable and reliable.

关 键 词：无线传输 LED点阵屏 STC12C5A60S2 NRF24L01 AT24C02 

分 类 号：TN873[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]