針對傳統(tǒng)LED 顯示屏投資大、遠程控制功能差的缺點提出了基于電話網(wǎng)的遠程控制
方案，設計了一套遠程控制系統(tǒng)，通過該系統(tǒng)可隨時更新顯示內(nèi)容。遠程通信采用串口通信方式，采用的是目前管理方便，運行成本較低的通過公共電話網(wǎng)絡進行遠程控制，通過公用電話網(wǎng)連接控制器實現(xiàn)對LED 顯示屏進行遠程控制和顯示內(nèi)容的更新，從而實現(xiàn)計算機對每個顯示屏進行遠程控制并對顯示內(nèi)容進行更新。在系統(tǒng)的硬件上增加了調(diào)制解調(diào)器和一塊全新設計專門用于連接調(diào)制解調(diào)器和LED 顯示屏的接口板。
關(guān)鍵詞： LED 顯示屏；公用電話網(wǎng)；顯示模塊；串口通信LED
Abstract：The traditional LED display system has lots of defaults such as high value and low
function of long-range controlling. Aiming at this, the subject about precept of long-range
controlling system based on public telephone network was given. The system can control the
display screen distantly and can refresh the content at any time. To realize the long-range
controlling we adopt serial communication. It’s a method based on public telephone network, which cost low at present. It add a modem and a connecting board that connect the modem and LED display screen.
Keywords：LED display screen ；Public telephone network；Display unit ；serial communication