Three-color lamp color transformation control method

Abstract

The invention discloses a three-color lamp color transformation control method. The method comprises the steps that an address selection circuit is configured with different communication addresses for three-color lamps; a processor extracts the light information of each frame of data in a light table, and sends control current to a controller; the address selection circuit selectively sends address signals to the controller; the controller judges whether a received address signal matches a preset address; if the received address signal matches the preset address, the three-color lamps flicker; and if the received address signal does not match the preset address, re-regulation is carried out to enable the three-color lamps to flicker. The address selection circuit is configured with different communication addresses for the three-color lamps. The processor extracts the light information and sends the control current to the controller. The address selection circuit selectively sends different address signals to the controller. The controller enables the three-color lamps to flicker in different colors according to the address signals. Error caused by frequency offset is reduced. The brightness of the three-color lamps is detected and regulated. Brightness constancy of the three-color lamp is realized.

Description

technical field [0001] The invention relates to the technical field of lighting equipment, in particular to a control method for color conversion of three-color lamps. Background technique [0002] Tri-color light is a newly developed LED backlight, which is more and more widely used due to its novel use function. The use of three-color lights can be exchanged among seven display colors according to different requirements of users: white, red (light orange), green, blue, yellow (red+green), cyan (green+blue), purple or Said magenta (blue + red). It can also be combined into various intermediate colors according to different proportions of various colors to meet various needs of customers. [0003] Because the power used by LED lights largely depends on the heat dissipation conditions of LEDs. The tube cores of three different colors are concentrated in one lamp (type 110), and its heat dissipation condition is very poor, which limits the power of the three-color lamp. The...

AI Technical Summary

Problems solved by technology

[0004] Most of the existing three-color lamps use a controller to control a three-color lamp, and the controller sends current to the circuit of each color of the three-color lamp to achieve the purpose of shining. If no current is sent, it will not light up. Simple, but when many tri-color lights need to be connected, the wiring is particularly messy, which increases the difficulty of maintenance; or the waveform signal sent by the processor is used to achieve the purpose of color change, due to the imbalance between the power supply and the load, resulting in color loss. The internal frequency offset is relatively large during the conversion, and a certain error will occur during the conversion, which will cause the tri-color lights to flicker and damage the tri-color lights

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