Visual and melanopic performance of a tropical daylight-mimicking lighting: a case study in Thailand

Q2 Computer Science

International Journal of Electrical and Computer Engineering Pub Date : 2023-10-01 DOI:10.11591/ijece.v13i5.pp4886-4900

Somyod Santimalai, T. Tayjasanant

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引用次数: 0

Abstract

This paper designed and developed a tropical daylight-mimicking lighting system based on photometric, radiometric and International Commission on Illumination (CIE) standard melanopic performances from natural lighting cycles in Thailand. Spectral power distribution (SPD) during daylight in summer and winter were recorded to create a dynamic artificial lighting system that best matches the natural daylight characteristics. Two set-ups light emitting diode (LED) (LED-A and LED-B) were screened, developed, validated and compared with different chromaticity layouts of the correlated color temperatures (CCTs) allocated on Planckian locus and later converted to x-y co-ordinates in a chromaticity diagram. Based on CCT and Duv deviations between two developed setups, LED-A could mimick circadian points on the chromaticity diagram better than LED-B did. CCT and Duv values of LED-A (dCCT=3.75% and dDuv=17.36%) can match closer to the daylight than those of LED-B (dCCT=5.0 % and dDuv=56.84%). For CIE-standard melanopic performances (melanopic efficacy of luminous radiation (mELR), melanopic equivalent daylight (D65) illuminance (mEDI) and melanopic daylight efficacy ratio (mDER)), LED-A is suitable to use indoor with averages of 1.16 W×lm-1, 236 lx and 0.84, respectively, while LED-B is good to use outdoor with averages of 1.53 W×lm-1, 266 lx and 1.06, respectively. The proposed design can be used as a guideline to establish a daylight-mimicking LED lighting system from actual measurement data.

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热带日光模拟照明的视觉和黑视表现:泰国的案例研究

本文设计并开发了一种基于测光、辐射和国际照明委员会（CIE）标准的热带日光模拟照明系统，该系统来自泰国的自然照明周期。记录夏季和冬季日光期间的光谱功率分布（SPD），以创建最符合自然日光特性的动态人工照明系统。筛选、开发、验证了两组发光二极管（LED）（LED-A和LED-B），并将其与普朗克轨迹上分配的相关色温（CCTs）的不同色度布局进行了比较，随后将其转换为色度图中的x-y坐标。基于两种开发设置之间的CCT和Duv偏差，LED-A可以比LED-B更好地模拟色度图上的昼夜节律点。LED-A的CCT和Duv值（dCCT=3.75%和dDuv=17.36%）比LED-B的CCT值（dCCT=5.0%和dDuv=56.84%）更接近日光。对于CIE标准的黑色素性能（发光辐射的黑色素功效（mELR）、黑色素等效日光（D65）照度（mEDI）和黑色素日光功效比（mDER）），LED-A适合在室内使用，平均值为1.16W×lm-1，236 lx和0.84，而LED-B在户外使用效果良好，平均值分别为1.53W×lm-1、266 lx和1.06。所提出的设计可作为根据实际测量数据建立日光模拟LED照明系统的指南。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Electrical and Computer Engineering Computer Science-Computer Science (all)

CiteScore

4.10

自引率

0.00%

发文量

177

期刊介绍： International Journal of Electrical and Computer Engineering (IJECE) is the official publication of the Institute of Advanced Engineering and Science (IAES). The journal is open to submission from scholars and experts in the wide areas of electrical, electronics, instrumentation, control, telecommunication and computer engineering from the global world. The journal publishes original papers in the field of electrical, computer and informatics engineering which covers, but not limited to, the following scope: -Electronics: Electronic Materials, Microelectronic System, Design and Implementation of Application Specific Integrated Circuits (ASIC), VLSI Design, System-on-a-Chip (SoC) and Electronic Instrumentation Using CAD Tools, digital signal & data Processing, , Biomedical Transducers and instrumentation, Medical Imaging Equipment and Techniques, Biomedical Imaging and Image Processing, Biomechanics and Rehabilitation Engineering, Biomaterials and Drug Delivery Systems; -Electrical: Electrical Engineering Materials, Electric Power Generation, Transmission and Distribution, Power Electronics, Power Quality, Power Economic, FACTS, Renewable Energy, Electric Traction, Electromagnetic Compatibility, High Voltage Insulation Technologies, High Voltage Apparatuses, Lightning Detection and Protection, Power System Analysis, SCADA, Electrical Measurements; -Telecommunication: Modulation and Signal Processing for Telecommunication, Information Theory and Coding, Antenna and Wave Propagation, Wireless and Mobile Communications, Radio Communication, Communication Electronics and Microwave, Radar Imaging, Distributed Platform, Communication Network and Systems, Telematics Services and Security Network; -Control[...] -Computer and Informatics[...]