Design Of Intelligent PDA Remote Controlled Graphic Dispaly System

With the rapid development of technology and people’s living standards,smart advertising display screen has been integrated into all aspects of people’slives, from the streets, shopping malls to business, advertising display screen weare an indispensable part of life. Traditional commercial advertising models arestatic display, it can not update the display screen in time. With the rapiddevelopment of the computer industry, dynamic display systems raised rapidly.But now a lot of dynamic display screen control system are based on the8or16-bit microprocessor core as the controller, most way of communication are usedUSB for data transfer, so that the computing speed、 the ability ofcommunicate、 the storage capacity has many limitations. In appeal against thisbackground, this paper designed a computing speed, strong communicationcapability, high processing speed, storage capacity via Bluetooth or WiFi forwireless transmission of graphic display system.The aim of the system is to solve the picture about how the system throughthe Android system sends to the remote display terminal problem. After the datatransfer mode and the Android system knowledge of research, finally, find thesolution. The picture in the Android system has been converted into a binaryarithmetic, transmitted to the micro controller processor via Bluetooth or WiFi,MCU receives data via USART after the data is stored to an SD card, go throughthe file system scan data and sent to the SD card, then completed the liquidcrystal display screen.The system uses a version of Google’s Android SDK4.1.2make PC softwaredevelopment, while using ST’s32-bit processor STM32F103RCT6as the basicarchitecture. The design includes the preparation of Android PC software,STM32circuit design and PCB board production, temperature and humidity acquisition, LCD, bluetooth, WiFi, SD card drive circuit. PC users can achievereal-time operation corresponding display text and images processed by the PCsoftware can also be temperature and humidity on the external environmentmonitoring and other functions.After the overall system’s performance test, the system can meet therequirements and functional specifications of the design, can achieve theupdated design requirements of in real time display for the text and images.