Design On Display Control System Based On Android Platform

This paper derives from PetroChina Innovation Fund Project(2014D-5006-0603),which completes gas wells monitoring,data collection,storage and access.In order to make it more convenient for staffs in the conference center of oil enterprises to read and view data,this article uses Android platform to design a mobile phone App through GPRS to read data from the remote database,and then send them to the screen by WiFi,which improves work efficiency.This dissertation designs display control system,microcontroller centered hardware platform is equipped with WiFi module,VGA interface conversion module,LCD screen at the periphery,and through interconnection and interconversion between interfaces,hardware circuit is designed as well as preparation of the corresponding control program.The development of mobile client mainly implements query and send data.On the one hand,mobile client adopts HTTP protocol communicating with the remote database to query data;On the other hand,mobile client will read data from the remote database using socket to connect to the hardware platform of WiFi module,and through communication between serial port and microcontroller,microcontroller can complete data analysis,processing,conversion,data integration to display frame,and conversion into VGA interface to display on LCD screen.The background program of remote database using SSH architecture completes connect to the database,achieving mobile client access to the database.Finally,an overall test is done to the display control system to verify the feasibility of mobile phone App sending data through WiFi to the LCD screen.That is to say,mobile intelligent terminal can serve mobile conferences.