基于LED光色动态可调的隧道照明控制系统研究

亮度调节是目前隧道照明控制系统兼顾安全性与节能性的主要应用方式。针对隧道照明控制系统光源调节方式单一、难以满足人眼视觉效应需求的问题,设计了一套基于LED光色动态可调的隧道照明控制系统。首先以暖白光、绿光、冷白光为三基色,推导出三通道PWM调光的光色动态调节模型;其次根据系统总体架构,对硬件电路进行具体设计与选型,同时完成上位机控制平台和下位机色温调节程序的开发;最后搭建控制系统实验平台对LED光色动态调节效果进行模拟验证。实验结果表明:上位机能准确输出控制指令控制LED光源实现隧道不同路段光色动态调节。

Research on Intelligent Control System for Tunnel Lighting Based on Dynamic LED Light and Color Temperature Adjustment

Brightness adjustment is the main application of the current tunnel lighting control system that takes into account both safety and energy saving. Aiming at the problem that the tunnel lighting control system has a single light source adjustment method and it is difficult to meet the needs of human visual effects, a tunnel lighting control system based on LED light color dynamic adjustment is designed. Firstly, the warm white light, green light and cold white light are used as the three primary colors to derive the three-channel PWM dimming light color dynamic adjustment model;Secondly, according to the overall system architecture, the hardware circuit is specifically designed and selected, at the same time the host computer control platform and the color temperature adjustment program of the lower computer are completed;finally, a control system experiment platform is built to simulate and verify the dynamic adjustment effect of the LED light color. The experimental results show that the host computer can accurately output control instructions to control the LED light source to achieve dynamic adjustment of light color in different sections of the tunnel.