Research On Wireless Pixel Display And Control Technology

In this paper,we mainly develop a wireless pixel screen,which is represented by an independent LED point light source based on wireless communication technology as pixel points,orderly placed into an array form to form a screen,using the background controller to control their own independent wireless point light source array,and display different colors,characters,patterns,and create the required visual effect and interaction effect in real time.Its independent pixel and variable configuration make the traditional display control method no longer applicable.Therefore,on the basis of the existing display control method,according to the characteristics of its independence and no electrical connection,the new display control method should be studied.At the same time,the relevant theoretical methods should be applied to the display control of various similar screens,which has good research significance.Wireless pixel screen system consists of LED display control system and LED wireless point light source.The display control system is responsible for decomposing the required display pattern to each pixel according to the real-time configuration of the field wireless pixel screen,and providing the effect picture to be displayed on the wireless pixel screen on the human-computer control interface.After the display effect is determined by the system operator,the display controller will distribute the display data to the corresponding LED point light source.The main work of this paper is the research of wireless pixel display and control technology,which is divided into three main contents the overall design of the system,the hardware development of wireless point light source and the hardware implementation of the improved algorithm.Furthermore,the wireless transmission system design of display data and the research of synchronous refresh technology are carried out,and the corresponding hardware design and software test are given.1.Overall design of the systemFirstly,the functional requirements of the wireless point light display and control system are analyzed in detail,and on the basis of the analysis,the overall structure design of the system,the design ideas of the main controller module and the LED node module are proposed,then the selection of the communication protocol is proposed,and finally the test step scheme of each module is proposed.2.Hardware development of wireless point light sourceThis part is the research on the communication module of wireless pixel screen system,including the selection,analysis and comparison of networking technology,the comparison based on a variety of communication protocols and architecture features,topology and networking strategy,the hardware circuit design and software programming of wireless module based on this technology,etc.,and according to the design principle,the hardware circuit and software program of the module are designed and tested Trial and verification.3.Hardware implementation of the improved algorithmBecause the display controller transmits the display data by broadcasting,the time when each pixel receives the display data is different.In order to achieve the synchronous refresh of LED wireless point light source,each pixel has a precise clock built in,and through the clock broadcast of the display controller,an improved FTSP algorithm based on the frame first delimiter acquisition mechanism is proposed to achieve high-precision communication synchronization.