Design On Remote Advertisement Screen Control System Based On LED Large Screen Display Technology

With the development of society,LED(light-emitting diode)advertising screen as a new type of information display media is more and more recognized and widely used.With the increase of display content in the advertising screen,the advertising screen is becoming larger and larger.LED advertising screen has become an important media for information release in our production and life and other fields,it has the characteristics of convenient controlling,large display area and reliable performance.The traditional LED display content updating method is based on wired communication technology.The drawback of this method is not only that each LED screen is equipped with a corresponding host computer,but also greatly restricts the wide range of application and control distance of the LED screen.This paper starts from the matching circuit design,chip selection and software design ideas used in the system,introducing a remote advertising screen control system based on LED large screen display technology designed from the actual needs of schools.The control system effectively solves the control drawbacks of traditional LED display screen.The system uses ARM control chip combined with data collection and distribution,pulse clock unified modular display technology to achieve a stable display of super large LED screen.GPRS communication module is used in the control modular,With the design of PC terminal human-machine control interface,it can realize the remote real-time interaction of LED large screen data.In the process of the design,it overcomes the difficulties of flash screen and display content lag caused by LED display control method through hierarchical buffering of display data,leading in de-interference circuit,setting software detection link and so on.Solving the problem such as signal sending module crashes during work,LED's display screen,and finish the production by finally debugging.After the practical use in school,good feedback has been received,which proves that the system can work steadily and reliably and meet the design requirements.The innovation of this system lies in the innovation of display mode.Even using relatively mediocre control chips,it can achieve the effect of using high performance chips.Combining wireless communication technology and convenient operation interface,it can improve the efficiency and convenience of the system.