LED, as a new type of light source, has been used in many occasions due to its low power supply voltage, low power consumption, long lifespan, and no radiation characteristics. With the continuous improvement of its brightness in recent years, especially the emergence of ultra-high brightness LED, LED has been widely used. From traditional indoor instrument signal indication, it has gradually developed to be used in traffic signal lights, car signal lights, backlight, indoor and outdoor large screen display, And now we are delving deeper into the field of lighting. Nowadays, the use of LED in the field of lighting will mainly focus on lighting. The inherent luminous characteristics of LED make it easy to control and fast strobe, allowing for the use of embedded microprocessors to independently control the grayscale of R (red), G (green), and B (blue) light emission in PWM (duty cycle) mode, and then complete the LED light control skills of full color effect. Due to the use of ultra bright LED decorative lighting fixtures, their brightness has met the requirements and they have significant advantages compared to neon lights in terms of lifespan, power consumption, and handling. They have gradually been promoted and are expected to have a relatively large market share in the coming years.

Principle of Color LED Diode Bead Control System

Control principle: The LED controller is equipped with a high-performance single chip micro control chip. The controller sends control signals and data to the LED driver chip through an internal control program. The LED driver chip generates corresponding actions based on the requirements of the control signals and data, thereby achieving separate control of each red, green, and blue LED. If the microcontroller continuously sends control signals and data to a string of LED driver chips, it can make each LED subject to continuous coordinated control. The expected change effect can be transformed into a data format and appropriate control instructions that can be processed by the LED controller, and then continuously sent to each LED driver chip, which can make the overall lighting display the desired effect. Here, a software system that closely cooperates with the controller, is easy to operate, and has powerful functions becomes necessary. Let's first analyze the principle of the control system.