Tunnel LED (Light Emitting Diode) brightness color temperature loop control system and application thereof

Abstract

The invention relates to the technical field of intelligent traffic and energy-saving control, specifically to a tunnel LED (Light Emitting Diode) brightness color temperature loop control system and application thereof. The control system comprises a brightness detection device, a color temperature detection device, an LED intelligent controller, a loop control line and an LED lamp. The tunnel lamp loop is controlled by adopting a PWM (Pulse Width Modulation) signal, the brightness is controlled by adopting the duty ratio of the PWM signal, the color temperature is controlled by adopting the frequency of the PWM signal, so that the purpose of independently controlling two functions with one signal is fulfilled, wherein the two functions can be independently controlled; simultaneously, by adopting the two-core loop control line, additional control lines are not needed, so that the cost is reduced; and by adopting the PWM signal for controlling the two functions, the stability of the system can also be improved, the construction difficulty and the fault search and maintenance difficulty are reduced, real-time adjustment on brightness and color temperature is realized, and the quality of tunnel lighting is improved.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation and energy-saving control, in particular to a tunnel LED brightness and color temperature loop control system and its application. Background technique [0002] In recent years, with the continuous development of highways in my country, the total mileage of highways in my country has jumped to the first place in the world, and the number of highway tunnels is also increasing year by year. Therefore, the first concern of tunnel lighting is whether to save energy, in order to achieve the purpose of energy saving , In addition to using a large number of LEDs for energy-saving lighting in the tunnel, the brightness of the LEDs is also adjusted according to needs to achieve energy saving. In the process of continuous development of technology, in addition to higher requirements for lighting energy saving, there are also further requirements for the comfort of lighting effects. Studie...

AI Technical Summary

Problems solved by technology

At present, the circuit control of a small number of LED tunnel lighting lamps with adjustable color temperature on the market generally uses the RS485 interface to control the brightness and color temperature. , will cause the entire circuit to fail, so it is difficult to maintain and find faults, and the current control methods of LED tunnel lamps that can control both brightness and color temperature mostly use RS485.

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