LED display system design technology

Time:2018-11-29 Views:1070

LED display system design technology is very important.If the LED display system is not well protected, it will pose a great threat to the use of LED display and seriously affect the use of LED.Therefore, the system design of LED display screen should be guaranteed in the first place.At present, the design technology of LED display system mainly includes three categories.

LED display system design three major technologies

I. LED display system reliability technology

1. The components have a margin of more than 20%, which increases the service life of the components.

2. The interface circuit allows the input voltage of components to fluctuate by plus or minus 5%, and the circuit can still work reliably.

3. The dynamic characteristics of the device have large redundancy to ensure that the system can still operate reliably when the characteristics of the components change.

Ii. Fault-tolerant design technology of LED display system

1, the communication protocol has a variety of fault tolerance: communication data constantly refresh, any accidental errors can be quickly corrected.

2. The software adopts various fault tolerance measures.

3. Various fault tolerance measures are adopted for data storage.

4, program error operation, real-time prompt.

5. Use rationality judgment to eliminate illegal data.

6. The refresh frequency of the display screen is more than 240HZ to ensure that the display screen is stable and flicker free.

Third, LED display system electromagnetic compatibility design technology

1. The power circuit adopts standard computer power supply and shielding measures, and the standard program of power noise filter -- switching power supply -- dc stabilized voltage power supply.

2. Good electromagnetic shielding of power supply and circuit.

3, analog signal ground, digital signal ground, structure and power supply to separate wiring safely, effectively prevent crosstalk.

4. PCB design specifications, including strict provisions on component arrangement, wiring, filtering and other aspects, use oscilloscope to measure the noise interference on the ground line of each PCB, and the peak value shall not exceed +50mv.

5. The interface circuit between board, board and case has anti-interference design.

6. System field wiring, signal line and ac power line (power line) shall be strictly separated.

7. Good grounding system and strict grounding.

8. In order to improve the reliability of the system, the power supply has taken measures to reduce the amount of use, leaving sufficient margin.

9. The external interface is driven by balanced current.

The design technology of LED display system should take user convenience as the core and user experience as the supreme principle, so that the design of LED display system has good expansibility and reliability.