Method for achieving self-adaptation LED drive
A technology of LED driving and implementation method, which is applied in lighting devices, light sources, electric light sources, etc., can solve the problem of inability to realize driving, and achieve the effect of realizing pin multiplexing function.
Inactive Publication Date: 2014-08-13
DALIAN JISITE TECH
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Problems solved by technology
In order to realize the driving of LEDs more easily, different types of LEDs are driven and controlled by the same driving circuit. In the prior art, technicians use constant current to control the working conditions of LEDs, and LEDs with different current requirements cannot be realized. drive
Method used
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Embodiment
[0018] Embodiment: In practical application, we select a group of 24 LED drive circuits, because monochrome LEDs use two control pins, and color LEDs use four control pins. Such as figure 1 Shown: If driving a single-color LED, each LED anode is driven, and all LEDs share a cathode, so a total of 24 LEDs are driven. Such as figure 2 As shown, if driving colored LEDs, every three channels drive one LED three-color electrode, and all LEDs share one cathode, so a total of 8 LEDs are driven. In actual work, we control the normal operation of the LED by adjusting the parameter values of the driving voltage and driving power to control the continuous change of the driving current. That is, the driving of LEDs under different current demands is realized.
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The invention discloses a method for achieving self-adaptation LED drive. The method includes the following steps that LED drive circuits of different varieties are arranged on a circuit board, different drive voltages and drive powers are set in advance, and accordingly drive current is calculated; self-adaptation pins are set, different pins and the variety of predrive LEDs are controlled according to LEDs of different types, and the number of the pins driving each set of the output LEDs on the circuit board is controlled according to the number of the LEDs on the circuit board; different instruction information is adjusted, the drive voltages and the drive powers are adjusted to control the drive current, and accordingly drive of the LEDs of different varieties is achieved. The LEDs of different varieties are driven by means of the same drive circuit board. The multiplexing function of the pins of the LEDs is achieved through self-adaptation configuration. Besides, work of the LEDs of different varieties is controlled by adjusting the drive current.
Description
technical field [0001] The invention relates to the field of LED control, in particular to a method for realizing self-adaptive LED driving. Background technique [0002] With the popularity and development of full-color LED displays, especially outdoor displays are widely used by users for their rich colors and all-weather playback performance. In order to realize the driving of LEDs more easily, different types of LEDs are driven and controlled by the same driving circuit. In the prior art, technicians use constant current to control the working conditions of LEDs, and LEDs with different current requirements cannot be realized. drive. Contents of the invention [0003] According to the problems existing in the prior art, the present invention discloses a method for implementing adaptive LED driving, which includes the following steps: [0004] S1: Set different types of LED drive circuits on one circuit board, and pre-set different drive voltages and drive powers to c...
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IPC IPC(8): H05B37/02
Inventor 崔建军魏长城全日龙
Owner DALIAN JISITE TECH
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