隧道变色温照明控制系统设计

Design of Tunnel Color Temperature Lighting Control System

色温影响人们的视觉功效、反应时间和舒适度。用LED取代传统的高压钠灯,并改进只依据亮度控制的照明方案,设计了一种可变色温的隧道智能照明控制系统。系统由洞外环境采集模块、洞内调光驱动模块和隧道管理中心的工业控制计算机组成。环境采集模块以STM32F103为核心处理器,搭配各传感器,上位机根据隧道洞外环境参数的变化对调光驱动模块下发调光策略,调光驱动模块输出两路PWM信号实现无极调控隧道内灯具亮度、色温。该系统简单、经济、稳定可靠,有助于提高驾驶员的视觉舒适感,减少安全隐患,比只调控灯具亮度方案节能18%以上。

Color temperature affects people＇s visual effects,reaction time and comfort.With LED replacing the traditional high-pressure sodium lamp,we improve the lighting scheme which is only based on the brightness control and design a variable color temperature tunnel intelligent lighting control system.The system consists of an acquisition module outside the tunnel,a dimming drive module inside the tunnel,and an industrial control computer in the tunnel management center.The environment acquisition module takes STM32F103 as the core processor and collocates with each sensor.The host computer distributes the dimming strategy to the dimming drive module according to the change of the environment parameters outside the tunnel.The dimming drive module outputs two PWM signals to achieve the brightness,Promise of color temperature regulation.The system is simple,economical,stable and reliable,and it helps to improve the driver＇s visual comfort and reduce the potential safety hazard.Compared with lighting regulation only focused only on the brightness of the system has 18% higher energy saving.