LED健康照明的节能调光策略

Energy-saving Dimming Strategy of LED Healthy Lighting

基于非视觉效应CLA(生理节律光照)模型分析健康节能的调光策略,给出一种引入调节因子的照明调光方式。该方式可实现照度、色度和节律刺激值的灵活调控,通过四色组合LED光源分析光谱效能的可优化潜力及光源驱动的节能调光思路。在光谱效能方面的结果表明,提高光谱效能可根据具体应用场景,通过转换非视觉光谱效能和光视效能最大的优化方式实现。在光源功耗方面的结果表明,同等照度和节律刺激下选择低色温光源可降低光源功耗,通过调节色度代替调节照度以达到健康照明需求的方式,从而更符合节能调光策略。

This paper analyzes the energy-efficient health lighting dimming method based on CLA(circadian light)non-visual effect model,and introduces a lighting dimming method with regulatortion factor,which can achieve the flexible control of illuminance,chroma and circadian stimulus(CS).It analyzes the optimization potential of spectral efficacy and the dimming ideas of reduce light source power by four-component combined LED light source.Results on spectral efficacy show that The improvement of spectral efficacy can be achieved by switching to the optimization strategy with the highest non-visual spectral efficiency according to the specific requirements.Results on power consumption of light source show that the light source of low color temperature can reduce power consumption under the same illumination and circadian stimulus,and it’s more in line with energy-saving dimming strategies by adjusting chromaticity instead of adjusting illumination within the permitted range of chromaticity to meet the needs of healthy lighting.