針對(duì)傳統(tǒng)LED 顯示屏投資大、遠(yuǎn)程控制功能差的缺點(diǎn)提出了基于電話網(wǎng)的遠(yuǎn)程控制
方案，設(shè)計(jì)了一套遠(yuǎn)程控制系統(tǒng)，通過(guò)該系統(tǒng)可隨時(shí)更新顯示內(nèi)容。遠(yuǎn)程通信采用串口通信方式，采用的是目前管理方便，運(yùn)行成本較低的通過(guò)公共電話網(wǎng)絡(luò)進(jìn)行遠(yuǎn)程控制，通過(guò)公用電話網(wǎng)連接控制器實(shí)現(xiàn)對(duì)LED 顯示屏進(jìn)行遠(yuǎn)程控制和顯示內(nèi)容的更新，從而實(shí)現(xiàn)計(jì)算機(jī)對(duì)每個(gè)顯示屏進(jìn)行遠(yuǎn)程控制并對(duì)顯示內(nèi)容進(jìn)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(shè)計(jì)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