LED electronic screen manufacturer decryption: the hardware design of

With the continuous expansion of the LED market demand and the increase in application scenarios, the LED electronic screen industry has continued to develop rapidly. It is expected that by 2021, the global LED display market value will reach US $ 917.347 billion. As the core part of the LED display, the LED display control system plays a vital role in promoting the development of the industry. This article will be designed by Shenzhen LED electronic screen manufacturers to decrypt the hardware design of the LED control system.

System work process

The hardware design of the LED display control system is mainly divided into software control systems and wireless transmission systems. The software control system is responsible for graphic editing, type extraction and preservation, image preview and file transmission; the wireless transmission system is responsible for transmitting file information from the PC to the LED electronic screen. The LED dot matrix in the hardware control system completes the information displayed by the current control. It controls the ranks of the LED dot matrix through the scanning driving method of the single -chip microcomputer to achieve the device driver and eventually realize the graphic display function received. Take you for 5 minutes to understand the LED display control system.

Computer software module analysis and design

The software module is divided into editing parts and control communication parts. The editing function of the graphic file is implemented, and the communication section completes the transmission of the file to the single-chip microcomputer storage module through the RS-232C serial communication communication. The system design adopts the Windows operating system to open the text editing window. The pixels in the customer area are the same as the actual LED dot matrix display point. The function is similar to Word document editing tools, including editing modules, drawing modules, text editing modules, color control modules , Display the effect loading module, preview module, information download module. Introduce the pixel density and resolution of the LED display.

Communication part

The communication of the LED electronic screen control system should have two independent communication ports, that is, two serial ports. Because the single -chip machine has only one serial port, a hardware switch is set in the external design to switch between two external tasks. The hardware switch uses the 74HC125 chip, and the 74HC125 is a three -state output high -effective four -bus buffer door. To communicate with the external computer, the design should be transformed in a low -cost design principle based on the low -cost design principle. Take you to understand the difference between CSP and COB LED chips.

LED electronic screen output part

This part is mainly responsible for the perfect sending data from the serial port to the LED display. Send data from a serial port to each line of the display, which requires the corresponding decoding control circuit to complete. The control part of the control system separates the data cable and the clock line. Each separation of a pair of data cables and clock lines can control 16 lines display code on the display. The decoding cable of the 16 lines 16 only needs to lead 4 lines from the control system. After these 4 lines are on the display, they will be translated into 16 selection and 1 line control lines by the decoding circuit.

Storage part

The storage part is divided into two parts, partly used for the storage of the display code of the LED display, and some for temporarily display the storage of the code. The displayed code memory uses SST39SF040, which is a Flash chip. The data is not lost after power loss. Calculated by 32 bytes of Chinese characters, this system can store 16,384 Chinese characters. Temporary display code memory uses STC62C256 memory. It is a RAM chip. The data is lost and lost to save the displayed data at that time.

Energy -saving and consumption reduction technology

Because the array control system is adopted, it can effectively reduce the loss of the lighting of the display screen caused by the grayness, which is conducive to improving the brightness of the display screen, or under the same brightness requirements, reduce the current of the display screen. So as to achieve the effect of energy saving and consumption reduction. The number of scans of the array system can reach more than 136, while the centralized form can reach up to 42. Is the LED billboard expensive? How high is running?

Conclusion

The hardware design of the LED electronic screen control system originated from the requirements of the product use environment. Most of the full -color LED display screens are used in indoor, and the outdoor environment needs to face a bad situation such as wind blowing, sun exposure, rainy days or snow. Such outdoor use environment The hardware design of the full -color LED display control system is relatively stricter. The design of the hardware of the LED electronic screen control system is also determined according to the needs of the market. According to the specific equipment communication requirements, the serial communication technology is adopted to realize the communication of the control system and the hardware equipment part, and the text information transmission function of the LED electronic screen is completed. The technical control of the LED electronic screen is an important guarantee for determining the quality of the product.

Thank you for watching. I hope we can solve your problems. Sostron is a professional LED display manufacturer. We provide all kinds of displays, display leasing and display solutions around the world. If you want to know: Outdoor LED advertising display: the best partner for advertising. Please click read.

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LED electronic screen manufacturer decryption: the hardware design of the LED control system