Automatic calibration instrument and calibration method for RGB chatoyancy LED lamp

Abstract

The invention discloses an automatic calibration instrument for an RGB variable color LED lamp, and a calibration method. The calibration instrument comprises a power source, a color sensor, a keyboard, a storage, a display screen, a central processing unit and a communication interface, wherein the central processing unit is loaded with control software provided with control parameters for adjusting RGB color; the communication interface is connected with an LED lamp controller; and the central processing unit is respectively connected with the power source, the color sensor, the keyboard, the storage, the display screen and the communication interface. The calibration method comprises the following steps: an RGB color setting value is obtained from the storage; the color sensor is used to obtain an RGB color actual measured value; the control software compares the RGB color setting value with the RGB color actual measured value, and obtains corresponding control parameters for adjusting RGB color according to difference between the setting value and the measured value; and the control parameters are transmitted to the LED lamp controller through a serial port and the LED lamp controller is responsible for executing calibration; therefore, different RGB variable color LED lamps have the same color in the same color lighting mode.

Description

technical field [0001] The invention relates to a color calibration device and a calibration method for RGB color-changing LED lights, and is especially suitable for automatically setting control parameters of various color lighting modes when the RGB color-changing LED lights leave the factory, so that different RGB color-changing LED lights can be automatically set. The lights show the same color in the same lighting mode. Background technique [0002] Due to the advantages of low power consumption, small size, high reliability, long life and fast response, LEDs have been widely used. In recent years, with the rapid development of power LED technology, it is convenient to integrate a certain number of RGB three-primary color LEDs in one lighting bulb, that is, the above-mentioned certain number of LEDs are divided into three primary colors of red, green and blue. By changing the light intensity of each LED lamp group according to a certain proportional relationship throug...

AI Technical Summary

Problems solved by technology

[0003] However, the color of RGB color-changing LED lights is composed of R, G, and B three primary color LEDs, and constant current control is usually used to achieve color control. However, due to the influence of the production process and production process, the luminous color of each primary color LED light There are individual differences between brightness, intensity and drive current, so that LEDs in the same batch show different colors at the same set current

Therefore, it will result in low factory pass rate and poor quality, and ultimately consumers cannot obtain good lighting effects.

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