Display screen capable of self-checking trouble point and method thereof

Abstract

The present invention provides a display screen capable of self-checking fault point and a method of self-checking fault point, the display screen includes a microprocessor and conjoint CPLD or FPGA control system, a LED diode, including tandem resistance before the overall power of the LED diode lattice, and an amplifier and A / D converter. The microprocessor MCU in the display screen controls CPLD or FPGA scanning method, controlling procession drive by decoding circuit, controlling LED luminescence and nonluminescence one by one. The display screen of the invention capable of self-checking fault point has a simple structure, lower cost, the method of the self-checking fault point has an accurate effect, quick speed, effectively resolving the detecting problem of the concentrated light apparatus in the poblic location, LED for example.

Description

【Technical field】 [0001] The invention relates to a display device, in particular to a display device with a fault detection function and a method for self-checking fault points. 【Background technique】 [0002] At present, there is no good way to detect whether the light-emitting diodes and control circuits of a large number of outdoor LED displays are working normally. Usually, manual visual inspection is used. The detection and judgment method of whether the light-emitting diodes are under control is to visually observe whether the light-emitting body emits light according to the control. Or don't shine to judge. The efficiency is low, and the problem cannot be found in time and accurately, which causes a lot of troubles in use. For example, the LED display screen used in public places, the commonly used Φ5mm display screen, has 17,200 light-emitting diodes per square meter. We often see that the display is incomplete, or some of the faults that are always on cannot be fo...

AI Technical Summary

Problems solved by technology

[0002] At present, there is no good way to detect whether the light-emitting diodes and control circuits of a large number of outdoor LED displays are working normally. Usually, manual visual inspection is used. The detection and judgment method of whether the light-emitting diodes are under control is to visually observe whether the light-emitting body emits light according to the control. Or don't shine to judge

The efficiency is low, and the problem cannot be found in time and accurately, which causes a lot of troubles in use

For example, the LED display screen used in public places, the commonly used Φ5mm display screen, has 17,200 light-emitting diodes per square meter. We often see that the display is not complete, or some of the faults that are always on cannot be found in time, which greatly affects the city. Landscape and image, thousands of display screens, luminous faults cannot be completed effectively, timely and accurately by manual visual inspection

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