S. Hsu, Cheng-Hsien Cgen, S. Hung, Tsung-Ying Chung
{"title":"ROAD LIGHTING MEASUREMENTS BY AN EQUIPPED VEHICLE","authors":"S. Hsu, Cheng-Hsien Cgen, S. Hung, Tsung-Ying Chung","doi":"10.25039/X46.2019.PO165","DOIUrl":"https://doi.org/10.25039/X46.2019.PO165","url":null,"abstract":"","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123298887","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"OPTIMIZATION OF TUNNEL LIGHTING CONTROL BY RE-AIMING OF THE EXTERNAL L20 LUMINANCE METER","authors":"C. Bouroussis, F. Topalis, D. Nikolaou","doi":"10.25039/X46.2019.PO160","DOIUrl":"https://doi.org/10.25039/X46.2019.PO160","url":null,"abstract":"","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124477405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lighting power density (LPD) is one of the most important evaluation index for energy-savings, which has been used as standard in USA, China, Singapore and so on. According to the practice, the standard in China helped reduce LPD by 20 percent, contributing a lot to China's energy-saving goals. The sports lighting is characterized by high-power, much energy consumption and great potential in energy-saving as well. In this study, LPD limits for different sports venues have been determinated according to the requirements of sports lighting, the fundamental of sports lighting design, which is important to the saving of lighting energy consumption. Also the technique of computer simulation, the data accumulation of vast engineering practice, the analysis of key points of lighting energy-saving and the improving method of utilization factor of luminaire are essential in the determination of LPD limits.
{"title":"RESEARCH ON LIGHTING POWER DENSITY AND ENERGY-SAVING TECHNIQUES OFSPORTS LIGHTING","authors":"Jianping Zhao, R. Lin, Y. C. Gao","doi":"10.25039/X46.2019.PO158","DOIUrl":"https://doi.org/10.25039/X46.2019.PO158","url":null,"abstract":"Lighting power density (LPD) is one of the most important evaluation index for energy-savings, which has been used as standard in USA, China, Singapore and so on. According to the practice, the standard in China helped reduce LPD by 20 percent, contributing a lot to China's energy-saving goals. The sports lighting is characterized by high-power, much energy consumption and great potential in energy-saving as well. In this study, LPD limits for different sports venues have been determinated according to the requirements of sports lighting, the fundamental of sports lighting design, which is important to the saving of lighting energy consumption. Also the technique of computer simulation, the data accumulation of vast engineering practice, the analysis of key points of lighting energy-saving and the improving method of utilization factor of luminaire are essential in the determination of LPD limits.","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125061250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The current debate on the cultural landscape proposes active enhancement practices and local planning tools that are also dedicated to the study of scenic-perceptive components and visual values. However, the current indications are limited to the definition of day images of sites and are not based on investigations of the corresponding nocturnal images of the widespread heritage. The study presented in this paper is aimed at underlining the importance of the analysis of nocturnal images and at defining design tips and guidelines for the definition of the nocturnal landscape image. The proposal of design guidelines will result from the assessment of the current nightscape. The aim of the paper is to present the methodological approach that has been conceived to address the analysis of the current nocturnal landscape image, carried out through both qualitative and quantitative analysis. In the paper results obtained from the application of the method to a case study are presented.
{"title":"ANALYSIS AND DESIGN APPROACH FOR A NOCTURNAL IMAGE OF THE CULTURAL LANDSCAPE","authors":"Lodovica Valetti, A. Pellegrino","doi":"10.25039/X46.2019.PP27","DOIUrl":"https://doi.org/10.25039/X46.2019.PP27","url":null,"abstract":"The current debate on the cultural landscape proposes active enhancement practices and local planning tools that are also dedicated to the study of scenic-perceptive components and visual values. However, the current indications are limited to the definition of day images of sites and are not based on investigations of the corresponding nocturnal images of the widespread heritage. The study presented in this paper is aimed at underlining the importance of the analysis of nocturnal images and at defining design tips and guidelines for the definition of the nocturnal landscape image. The proposal of design guidelines will result from the assessment of the current nightscape. The aim of the paper is to present the methodological approach that has been conceived to address the analysis of the current nocturnal landscape image, carried out through both qualitative and quantitative analysis. In the paper results obtained from the application of the method to a case study are presented.","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123278766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"EXPERIMENT OF LIGHTING ENVIRONMENTS IN WARD FOR BLOOD CANCER PATIENTS BASED ON VR TECHNOLOGY","authors":"Shao Rongdi, Feng Kai, Ge Wenjing, Hao Luoxi","doi":"10.25039/X46.2019.OP63","DOIUrl":"https://doi.org/10.25039/X46.2019.OP63","url":null,"abstract":"","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122183145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper presents a comparison of measurements of the waveforms of temporal light modulation (TLM) from eight light sources performed by two different laboratories. The study focuses on the methodology of extracting relevant numerical differences between the measured waveforms. The methodology involves frequency matching, duration matching, selection of sampling interval, phase matching, and normalization. Results of the use of the methodology are presented. The results show that for some waveforms the comparison method can be used to practically explore equivalency of measurements.
{"title":"MEASURING AND COMPARING WAVEFORMS OF TEMPORAL LIGHT MODULATION","authors":"A. Thorseth, J. Lindén, A. Bergen","doi":"10.25039/X46.2019.OP02","DOIUrl":"https://doi.org/10.25039/X46.2019.OP02","url":null,"abstract":"This paper presents a comparison of measurements of the waveforms of temporal light modulation (TLM) from eight light sources performed by two different laboratories. The study focuses on the methodology of extracting relevant numerical differences between the measured waveforms. The methodology involves frequency matching, duration matching, selection of sampling interval, phase matching, and normalization. Results of the use of the methodology are presented. The results show that for some waveforms the comparison method can be used to practically explore equivalency of measurements.","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124200315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chikako Ohki, T. Okamoto, Jurie Tadaki, H. Ohga, N. Yoshizawa
{"title":"FAÇADE DESIGN OPTIMIZATION BASED ON ENERGY USAGE, GLARE, AND VIEW USING RADIANCE AND NEWHASP","authors":"Chikako Ohki, T. Okamoto, Jurie Tadaki, H. Ohga, N. Yoshizawa","doi":"10.25039/X46.2019.PO145","DOIUrl":"https://doi.org/10.25039/X46.2019.PO145","url":null,"abstract":"","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131374863","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
For the application of discomfort glare metrics, a categorisation is used, dividing the metric scale into categories of perception. These categories are separated by borderline values, or so-called cut-off values. Recent literature shows that these cut-off values are lower when they are derived from field study data than those derived from laboratory study data. To investigate this further, the data from one field study and two laboratory studies was used to derive and compare cut-off values corresponding to three borderlines. The results show that the field study cut-off values were systematically lower than the laboratory study ones, implying that discomfort glare is reported at lower stimulus magnitudes in the field. Although further research is required on that topic, several hypotheses are discussed in order to explain the gap between cut-off values derived from field data and cut-off values derived from laboratory data. Recommendations for future studies are also provided.
{"title":"DISCOMFORT GLARE CUT-OFF VALUES FROM FIELD AND LABORATORY STUDIES","authors":"C. Pierson, M. S. Khanie, M. Bodart, J. Wienold","doi":"10.25039/X46.2019.OP41","DOIUrl":"https://doi.org/10.25039/X46.2019.OP41","url":null,"abstract":"For the application of discomfort glare metrics, a categorisation is used, dividing the metric scale into categories of perception. These categories are separated by borderline values, or so-called cut-off values. Recent literature shows that these cut-off values are lower when they are derived from field study data than those derived from laboratory study data. To investigate this further, the data from one field study and two laboratory studies was used to derive and compare cut-off values corresponding to three borderlines. The results show that the field study cut-off values were systematically lower than the laboratory study ones, implying that discomfort glare is reported at lower stimulus magnitudes in the field. Although further research is required on that topic, several hypotheses are discussed in order to explain the gap between cut-off values derived from field data and cut-off values derived from laboratory data. Recommendations for future studies are also provided.","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121821534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Road lighting causes unwanted ecological impact on species and habitats where species may be protected and/or light-sensitive. Yet, there is very little information available on how roadlighting sh ...
道路照明会对受保护及/或对光敏感的物种及生境造成不必要的生态影响。然而，关于道路照明如何…
{"title":"EVALUATION BETWEEN ENERGY EFFICIENCY, ECOLOGICAL IMPACT AND THE COMPLIANCE OF REGULATIONS OF ROAD LIGHTING","authors":"A. Jägerbrand","doi":"10.25039/X46.2019.PO176","DOIUrl":"https://doi.org/10.25039/X46.2019.PO176","url":null,"abstract":"Road lighting causes unwanted ecological impact on species and habitats where species may be protected and/or light-sensitive. Yet, there is very little information available on how roadlighting sh ...","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120964576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Luminance distributions would be very suitable as input for lighting control systems that aim for a comfortable lit indoor environment. Luminance distribution measurements should then correspond to the visual field of the user. However, this will interfere with office activities. Therefore, this study aims to validate whether it is feasible to approximate the luminous conditions experienced by the user using ceiling-based measurements instead. The average desktop luminance was measured using a luminance camera, under varying conditions, simultaneously from eye level and ceiling and their relations were analysed. Normalized root mean square errors were found ranging from 10,3 % to 14,3 %, while the average bias was 14,2 % between measurements from eye level and ceiling. Based on these results, it is concluded that the experienced desktop luminance cannot be exactly replicated by ceilingbased measurements. However, ceiling-based luminance measurements are able to provide a reasonable approximation that suffices for practical systems. Keywords: Luminance Camera, Field of View, HDR, Ceiling-based, Luminance distribution, Desktop luminance, Unobtrusive measurements
{"title":"CEILING-BASED LUMINANCE MEASUREMENTS: A FEASIBLE SOLUTION?","authors":"T. Kruisselbrink, R. Dangol, Evert van Loenen","doi":"10.25039/X46.2019.PO077","DOIUrl":"https://doi.org/10.25039/X46.2019.PO077","url":null,"abstract":"Luminance distributions would be very suitable as input for lighting control systems that aim for a comfortable lit indoor environment. Luminance distribution measurements should then correspond to the visual field of the user. However, this will interfere with office activities. Therefore, this study aims to validate whether it is feasible to approximate the luminous conditions experienced by the user using ceiling-based measurements instead. The average desktop luminance was measured using a luminance camera, under varying conditions, simultaneously from eye level and ceiling and their relations were analysed. Normalized root mean square errors were found ranging from 10,3 % to 14,3 %, while the average bias was 14,2 % between measurements from eye level and ceiling. Based on these results, it is concluded that the experienced desktop luminance cannot be exactly replicated by ceilingbased measurements. However, ceiling-based luminance measurements are able to provide a reasonable approximation that suffices for practical systems. Keywords: Luminance Camera, Field of View, HDR, Ceiling-based, Luminance distribution, Desktop luminance, Unobtrusive measurements","PeriodicalId":121032,"journal":{"name":"PROCEEDINGS OF the 29th Quadrennial Session of the CIE","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120977919","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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