Light & Engineering最新文献_第7页

Wireless Controlled Wide Range Tuneable CCT Lighting System Using Three Component Colour Mixing 无线控制宽范围可调谐CCT照明系统使用三组分混色

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-12-01 DOI: 10.33383/2020-077

Basudeb Das, Tapas Maity, S. Mazumdar

{"title":"Wireless Controlled Wide Range Tuneable CCT Lighting System Using Three Component Colour Mixing","authors":"Basudeb Das, Tapas Maity, S. Mazumdar","doi":"10.33383/2020-077","DOIUrl":"https://doi.org/10.33383/2020-077","url":null,"abstract":"This paper proposes a novel approach of wireless controlled, tenable correlated colour temperature (CCT) lighting system with high colour rendering index (CRI) using the concept of colour mixing. Using Grassmann’s colour mixing theory, phosphor coated warm white LED source (CCT 2800 K) is mixed with the blue and green LED light sources to meet the requirement of high CRI and high value of red object identification parameter R9. A detailed mathematical formulation is derived for easy controlling of variable CCT and illuminance and a flowchart of wireless control scheme is incorporated and experimentally validated in this article. As a result, the locus of the blended light source is very close to the Planckian locus on CIE1931 chromaticity diagram with a minimum uv D value of +0.0005. This proposed system provides a very wide range CCT starting from 2800 K to 15000 K with a high CRI value of 94 at CCT 5000 K. Another feature of this blended light source is the true colour identification parameter of red object (R9), which is also increased to 93 at CCT 8000 K. This system has very wide application in industries like textile, food processing etc., in museum, art gallery, and medical application like surgical lighting for its high CRI and R9 value with wide range of CCTs.","PeriodicalId":49907,"journal":{"name":"Light & Engineering","volume":"35 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89190643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Correspondence between the Spectral Sensitivity Characteristics of Human Eye Retina Photo-Receivers and the Frequencies of the Universal Period-Tripling System 人眼视网膜光接收器的光谱灵敏度特性与通用三倍频系统频率的对应关系

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2020-070

V. N. Lesnykh, V. A. Kolombet, A. V. Elistratov, Anatoly M. Taranenko, S. E. Shnoll

{"title":"On the Correspondence between the Spectral Sensitivity Characteristics of Human Eye Retina Photo-Receivers and the Frequencies of the Universal Period-Tripling System","authors":"V. N. Lesnykh, V. A. Kolombet, A. V. Elistratov, Anatoly M. Taranenko, S. E. Shnoll","doi":"10.33383/2020-070","DOIUrl":"https://doi.org/10.33383/2020-070","url":null,"abstract":"The article is devoted to the discussion of the evolutionary adjustment of the photodetectors of the human retina to the frequencies of the UPTS (the so-called universal period-tripling system). This is a new scientific direction in the study of complex systems. The article invites lighting engineers who study the issues of visual perception to get acquainted with the phenomenon of UPTS. To date, an experimental research material has been accumulated and sufficient theoretical grounds have been obtained for the formulation of the assumption that the UPTS and its main parameter Тk, m are manifested in almost all time scales. The values of Тk, m are described with great accuracy by means of the empirical Puetz’s formula. In human vision, UPTS manifests itself in the form of nine periods of Тk, m, corresponding to the cases of m = –11, –8, –5, –3, 0, 3, 5, 8, and 11, where the five central ones dominate –5, –3, 0, 3, and 5, corresponding to the rods, as well as the B- and R-cones. Some questions remain about the G-cones and the ipRGC cells that respond to the extreme, “weakened” values of the index m = –11, –8, 8, and 11. The determination of the proposed calculated values of the wavelengths of light corresponding to the maximum spectral sensitivity of retinal photodetectors is important for specialists in the field of visual perception, medicine, optics, as well as for applications in a number of technical applications.","PeriodicalId":49907,"journal":{"name":"Light & Engineering","volume":"13 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87333168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Analysis of Tungsten Halogen Lamps Characteristics 卤钨灯特性分析

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2020-083

O. Kovalenko, Yulia A. Dashkina, Yu. A. Zhuravleva, S. Mikaeva

引用次数: 1

Daylight, Solar Radiation, Architectural Expression, and Energy Efficiency of Buildings 日光、太阳辐射、建筑表达和建筑能源效率

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-074

A. K. Solovyov

{"title":"Daylight, Solar Radiation, Architectural Expression, and Energy Efficiency of Buildings","authors":"A. K. Solovyov","doi":"10.33383/2021-074","DOIUrl":"https://doi.org/10.33383/2021-074","url":null,"abstract":"Building design includes a large number of various issues, which must be taken into account in mutual coordination and with optimal consideration of individual factors. Daylighting, insolation, sun protection in hot weather are factors that directly affect the comfort of the indoor environment in buildings and their energy efficiency. It is noted that the above factors also affect the economy through the cost of housing and through operating costs for replenishing heat losses through windows, for ventilation and cooling of buildings, i.e. on the elimination of heat gains through translucent structures, as well as on artificial lighting, for which electricity costs can be comparable depending on the climatic conditions of the construction site and the design features and architecture of buildings, on artificial lighting technology and on technical solutions for air conditioning and ventilation. It provides topics related to daylight, solar radiation, and translucent structures, directly related to building design, partially reflected in the articles of this issue of Light & Engineering journal. Thus, the interrelation of building design issues with various aspects of lighting technologies is indicated.","PeriodicalId":49907,"journal":{"name":"Light & Engineering","volume":"9 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81954467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characteristics of High-Power UV Lamps with Electronnic Ballasts 带有电子镇流器的大功率紫外灯的特性

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-003

O. Kovalenko, T. Chuvatkina, Nina P. Nestyorkina, S. Mikaeva, Yu. A. Zhuravleva

引用次数: 0

A Method for Evaluating the Daylighting of Premises Using BIM 一种基于BIM的房屋采光评估方法

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-070

Alexander P. Konstantinov

引用次数: 0

Supplementary Artificial Lighting of Interiors as a Factor to Create a Comfortable Lighting Environment in Working Premises of Office Buildings: A Review 室内辅助人工照明对营造办公场所舒适照明环境的影响

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-068

Sergei V. Stetsky, K. Larionova

引用次数: 0

Definition of Characteristics of Instantaneous Diurnal Activity of Human Body Affected by Solar Radiation in the Circadian Region of Optical Spectrum during Daytime 白日光谱昼夜节律区受太阳辐射影响的人体瞬时日活动特征的定义

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2020-074

A. V. Leonidov

引用次数: 0

Computer Vision Method for Forest Fires Detection Based on RGB Images Obtained by Unmanned Motor Glider 基于无人机动滑翔机RGB图像的森林火灾计算机视觉检测方法

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-009

M. Kataev, E. Kartashov

引用次数: 0

Microclimate Parameters Evaluation for Spaces with Windows of Different Thermal Protection 不同防热窗空间小气候参数评价

IF 0.6 4区工程技术

Light & Engineering Pub Date : 2021-10-01 DOI: 10.33383/2021-078

A. Frolova, S. Landyrev

{"title":"Microclimate Parameters Evaluation for Spaces with Windows of Different Thermal Protection","authors":"A. Frolova, S. Landyrev","doi":"10.33383/2021-078","DOIUrl":"https://doi.org/10.33383/2021-078","url":null,"abstract":"Radiation cold flows from the windows in the winter period play an important role in the formation of the room overall thermal microclimate. The compliance with the requirements of GOST 30494–2011 for the resulting temperature and the local asymmetry of the resulting temperature in the centre of the room, as well as the boundaries of its serviced area, is not subject to any verification during the expert examination of the building projects. The designers do not perform such a check due to the absence of a method for calculating the influence of the temperature of all surrounding surfaces on these indicators. The standards for reduced heat transfer resistances of windows in residential and commercial public buildings have recently been increased. However, for the buildings of medical and preventive, preschool educational, general education institutions, and boarding schools these standards have remained the same. In the proposed work, the problem of the indoor microclimate parameter assessment is solved by calculations using the example of a library reading room with higher thermal protection of the windows and a classroom of the art school, where the window thermal protection has remained the same, in the city of Irkutsk. The percentage of the facade glazing in both cases was 34.5 %. The calculations, which have been made for the coldest calculation period, showed that for windows with an increased heat transfer resistance, the heating devices of the water heating system neutralize the cooling effect of the window radiation fluxes. In the rooms with an air heating system, the optimal norms of the resulting temperature are not met. For various regions of Russia, provision should be made of larger studies as to the combinations of the window heat transfer resistance and the window size to follow the daylighting standards, when the norms of the resulting temperature and the asymmetry of the resulting temperature are not possible to be met.","PeriodicalId":49907,"journal":{"name":"Light & Engineering","volume":"2010 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2021-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82596080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2