A kind of control method of three-color lamp color transformation

Abstract

The invention discloses a control method for color conversion of three-color lamps. The method includes the following steps: an address selection circuit configures different communication addresses for the three-color lamps; The address selection circuit selectively sends address signals to the controller; the controller judges whether the received address signal matches the preset address. The lights flicker. The address selection circuit configures the address for the three-color lamp, the processor extracts the light information, and sends a control current to the controller, the address selection circuit selectively sends different address signals to the controller, and the controller makes the three-color lamps present differently according to the address signal The flickering reduces the error caused by the frequency offset; at the same time, the brightness of the three-color lamp is detected to achieve the purpose of adjusting the brightness of the three-color lamp, thereby realizing the constant brightness of the three-color lamp.

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, according to different requirements of users, can be exchanged among seven display colors: 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 lam...

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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