| LED光源的光谱能量分布（SPD）对步行空间障碍物探测的影响研究 |
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| 引用本文： | 杨秀,郝洛西,林怡.LED光源的光谱能量分布（SPD）对步行空间障碍物探测的影响研究[J].照明工程学报,2014(6):37-42. |
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| 作者姓名： | 杨秀 郝洛西 林怡 |
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| 作者单位： | 同济大学建筑与城市规划学院,上海200092 |
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| 基金项目： | 国家自然科学基金委员会资助项目（项目批准号：50978189） |
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| 摘 要： | 通过室内步行空间照明场景的模拟实验,让被试观察正前方距离4m远处的观察点,并在三分之一秒内探测场景中不同偏离角度的障碍物情况,以获得LED光源SPD对于障碍物探测能力的影响。研究结果显示,在地面平均照度为5lx、10lx和20lx的亮度环境中,LED光源的SPD对障碍物探测的影响均具有统计学上的显著性,且500nm以下蓝光含量更高的6500K色温LED光源对于障碍物的探测最有利,4000K次之,2700K最不利。实验还说明光源SPD对线上视觉没有影响,而对于周边视觉有影响,且随着探测角度的变大,光源SPD的影响作用越明显。
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| 关 键 词： | LED光源:光谱能量分布(SPD) 人行空间 障碍物探测 |
The Impact of Spectral Power Distribution （SPD） of LEDs on Obstacle Detection of Pedestrians |
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| Yang Xiu,Hao Luoxi,Lin Yi.The Impact of Spectral Power Distribution （SPD） of LEDs on Obstacle Detection of Pedestrians[J].China Illuminating Engineering Journal,2014(6):37-42. |
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| Authors: | Yang Xiu Hao Luoxi Lin Yi |
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| Affiliation: | (College of Architecture ＆ Urban Planning, Tongji University, Shanghai 200092, China) |
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| Abstract: | This paper, evidenced by indoor simulation experiments in which the subject is asked to stand at a distance of 4m and detect the obstacles from different angles of deviation within one third of a second, probes into the influence of SPD of LEDs on the obstacle detection. The result shows when the average ground illuminances are at 5lx, 10lx and 20lx, the effect of SPD of LEDs has its statistical significance to obstacle detection. The most favorable one is the blue-rich LEDs with correlated color temperature of 6500K, which contain more blue light below 500nm, 4000K taking the second place, 2700K being the last one. Besides, the data also reveals that SPD does not affect the on-axis visual activity, but has effect on off- axis vision, which is in direct proportion to the angles for detection. |
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| Keywords: | LED spectral power distribution （SPD） footpath obstacle detection |
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