ระบบควบคุมการแสดงผล LED, หรือที่เรียกว่าตัวควบคุมจอแสดงผล LED หรือการ์ดควบคุมการแสดงผล LED. เป็นองค์ประกอบหลักที่ประกอบขึ้นเป็นหน้าจอแสดงผล LED, รับผิดชอบหลักในการรับข้อมูลการแสดงภาพและวิดีโอจากพอร์ตอนุกรมของคอมพิวเตอร์หรืออินเทอร์เฟซ DVI, วางไว้ในหน่วยความจำเฟรม, and generating serial display data and scanning control timing that the LED display screen can recognize in a partition driven manner.
By analyzing the dot matrix module and control circuit, determine the component composition of the LED display screen; By analyzing the microcontroller and intelligent control module, determine the composition structure and scanning driving method of the LED display screen, and achieve the display of the LED display screen.
How is the LED display screen control system implemented?
Based on the application of LED display screen control system, the architecture and workflow of LED graphic display screen were designed. The software system and the wireless transmission control hardware main system use serial communication to complete program downloading and achieve the transmission of text information.
Overall Analysis of LED Display Screen Control System
The LED display screen system consists of software control system, wireless transmission system, equipment main controller, LED display dot matrix, power supply, และส่วนประกอบอื่นๆ. The basic structure is shown in the following figure:
How is the LED display screen control system implemented?
System working process: The software control system mainly completes tasks such as graphic and text editing, font extraction and saving, image preview and file transfer; The wireless transmission system mainly completes the transmission of file information from the PC to the LED display. The main task of the LED dot matrix in the hardware control system is to display information through current control. The LED dot matrix is driven by the scanning drive method of the microcontroller to drive the rows and columns of the device and ultimately achieve the function of receiving graphics and text display.
Analysis and Design of Computer Software Modules
The software module is divided into an editing section and a control communication section. The editing section implements the editing function of graphic and text files, while the communication section completes the transmission of files to the microcontroller storage module through RS-232C serial communication. The communication section will be introduced in detail in Chapter 3. The system design adopts the Windows operating system, which opens a text editing window. The pixels in the customer area are the same as the actual LED dot matrix display screen pixels, with functions similar to Word document editing tools, including editing module, drawing module, text editing module, color control module, display effect loading module, preview module, and information download module.
