2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)最新文献

{"title":"Modelling the Behavior of Lighting Systems Controlled at a Constant Level of Illuminance","authors":"Pavel Valíček, Tomás Novášk, Jiří Beseda, K. Sokanský","doi":"10.1109/LUMENV.2018.8520993","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8520993","url":null,"abstract":"The paper deals with the issue of the dimming of lighting systems of the artificial lighting controlled to a constant level of illuminance based on contributions of daylight. It solves the issue of differences, which arise when setting the existing lighting systems without daylight and their subsequent operation in dimming to a constant illuminance level with the presence of daylight. This issue is addressed in the paper by means of modelling the illuminance systems of the artificial lighting and CIE overcast sky producing different illuminance of an outdoor, unscreened surface. The modelling took place based on the contributions of the equally cloudy sky to the interior. The article analyses the influence of the location and reception characteristics of the light sensor on the course of illuminance and the uniformity by solving the interior spaces at various levels of outdoor lighting. Primarily, the simplest types of lighting systems dimmed as a whole based on the input of one illuminance sensor were modelled there.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115334923","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":"Novel Method of Total Spectral Radiant Flux Standard Realization","authors":"Jan Lalek, A. Rybczyński, M. Przybyła, E. Ivashin, M. Solodilov, B. Khlevnoy, V. Gavrilov","doi":"10.1109/LUMENV.2018.8521091","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8521091","url":null,"abstract":"Modern metrology of SSL sources requires a modified approach to future realization of reference standards. This is caused by the fact that traditional broad band and omnidirectional light sources used are being replaced by high intensity sources with a specific directional light intensity distribution. At the same time the importance of LED lighting quality assurance is increasing as this new type of lighting is currently replacing traditional light sources in many applications. The specifics of an integrating sphere-spectroradiometer measurement system require the calibration with the use of a reference standard with known Spectral Radiant Flux Distribution, Luminous flux as well as the Luminous Intensity Distribution (LID) to compensate for the sphere system nonuniform reflectance properties. This way the accuracy of the sphere system calibration will allow to measure various types of LED products in conformance with the EN 13032-4:2015, LED lamps, modules and luminaires modules, lamps regardless of their spatial distribution properties. This paper will cover basic concepts and details of a novel method of Total Spectral Radiant Flux (TSRF) realization and description of a TSRF standard facility developed for the Russian National Metrology Institute - VNIIOFI, Moscow. The method (and the developed facility) is based on a goniospectroradiometer system traceable to a standard Black Body and allowing the calibration of a light source in terms of TSRF and additionally providing LID data of the source.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125006073","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":"Characterization of Hybrid LED Panels","authors":"József Nádas, L. Balázs","doi":"10.1109/LUMENV.2018.8521080","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8521080","url":null,"abstract":"LED panels comprising white phosphor LEDs and narrow band red LEDs was built to study the advantages and limitations of hybrid LED systems. The white and red channels were controlled independently enabling continuous spectral tuning of the panel. The electrical and photometric parameters were measured as a function of driving current of red and white LED arrays. The measurement data indicate that the color rendering metrics of the panel reach a maximum as the ratio of the red emission increases. In our work trade-offs between luminous efficacy and color quality is discussed.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115443477","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":"Measurements of the Luminance Distribution in the Classroom Using the SkyWatcher Type System","authors":"M. Sielachowska, D. Tyniecki, M. Zajkowski","doi":"10.1109/LUMENV.2018.8521086","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8521086","url":null,"abstract":"The aim of this work is to determine the possibility of using an automated Skywatcher system to analyze luminance distributions on selected surfaces, such as ceilings, walls, etc. The paper presents the procedure of measuring luminance distribution of the wall and ceiling surfaces of a classroom, using a typical luminance meter cooperating with the Skywatcher system. The use of a matrix luminance meter was also analyzed and compared with Skywatcher system. The results obtained were compared with numerical calculations in DIALux and Relux software.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116742525","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":"Analytical Estimation of Optical Efficiency of Cylindrical Light-Tubes Under Various CIE Sky Types","authors":"J. Petržala, L. Kómar","doi":"10.1109/LUMENV.2018.8521084","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8521084","url":null,"abstract":"The light pipes represent a common device for enhancement of daylight amount in buildings with complex architecture and insufficient lighting by vertical windows or in underground spaces. The advantage of straight vertical light pipes is that they transport light into interior spaces from the whole sky vault independently on solar azimuth. So mainly at higher solar altitudes and under clear sky conditions they can significantly contribute to better daylight availability in buildings. The optical efficiency of a light pipe strongly depends on number of reflections of the light beams between the particular interfaces. There are available some numerical tools based on ray-tracing algorithms that enable to calculate the efficiency with high precision under given conditions. However, such calculations are adequately time-consuming and so non-attractive for routine (mass) modelling. This contribution presents an analytical method for prediction of the optical efficiency of straight light-pipes which is applicable on 15 types of sky luminance defined by CIE. Due to the analytical approach, the calculation is very fast. The method is validated by accurate numerical simulations for all the sky types and at various pipe aspect ratios. Mainly in the extreme cases of clear and overcast sky, the results are in good agreement.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125571950","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":"Measurement of Outdoor Lighting with a Focus on Watchdog Lighting System in the Area of Electric Station TR Čechy Střcd","authors":"Richard Baleja, T. Novák, K. Sokanský, P. Bos, P. Becak","doi":"10.1109/LUMENV.2018.8521145","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8521145","url":null,"abstract":"The use of camera and security systems has been becoming a standard part of facilities equipment. Companies protect their property against potential damage and theft and also want to have information about who, when and where was located. These systems are especially used to protect strategic objects whose threat or destruction would have an obvious impact on a society. This group of buildings clearly includes electric stations where the eventual shutdown or destruction would result in a power outage in the regions or a total blackout of the whole country. Therefore, when designing security and camera systems, consideration should be given to all possibilities of space disturbance and to designing the system so that any intruder can be detected in time. In this paper, we will deal in detail with the watchdog lighting system of an electric station that works together with camera systems TSFO. At the very beginning, the right choice of security cameras is essential - they should have a sufficient sensitivity and a resolution to detect objects properly in both day and night hours. The designing of a watchdog lighting system is necessary for the camera system TSFO to work reliably and to provide expected information. The watchdog lighting system is designed with respect to the position and height of the monitoring cameras and by this calculation is set the height of the luminaires, their pitch and the appropriate type and power of the luminaire. At present, most of the lighting systems are provided by LED lights, which, compared to the high-pressure sodium lamps, have many benefits, mainly in the wide range of luminance curve characteristics. The subject of this article is a measuring of watch lighting system in the site of the electric station TR Cechy střed, which uses high-pressure sodium lamps for watchdog lighting system as well as the design of optimization of this lighting system by using LED luminaires capable of distributing the camera lighting component throughout the whole range of the monitored area between the lighting points.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134447528","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":"Analysis of Traffic Accidents as a Part of Methodology for Selecting a Lighting Class for Road Lighting","authors":"Theodor Terrich, P. Žák","doi":"10.1109/LUMENV.2018.8520962","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8520962","url":null,"abstract":"The paper provides a detailed analysis of traffic accidents in the Czech Republic, which will serve as one of the input materials for the preparation of the national methodology for the selection of lighting classes for public lighting based on the administrative classification of roads in the Czech Republic. For the analysis of traffic accidents a detailed data of traffic accidents from the statistics of the Police of the Czech Republic in the time period from 2013 to 2017 are used. Traffic accidents are analysed according to the location of the accident, i.e. a straight road section, a road curve, an traffic junction, time interval during the night hours, the road category, the size of the municipality or the severity of the accident. The number of traffic accidents in municipalities during public lighting operation is also compared with the total number of traffic accidents during the day and outside municipalities. The results of the analysis will be used in the selection system of lighting classes for each traffic road category, for setting the parameters in the conflict area and it will be used also for setting rules for adaptive lighting levels during night hours.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124645481","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":"The Influence of Luminaire Photometric Data Accuracy on Road Lighting Calculations Quality","authors":"D. Czyżewski","doi":"10.1109/LUMENV.2018.8521163","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8521163","url":null,"abstract":"Road luminaires are improving visual comfort during the night driving which has impact on road safety. Properly designed luminaires are also able to meet the standard requirements for its high energy efficiency. In this research it was checked how the measurement accuracy of luminaire luminous intensity distribution curve are impact on accuracy of road lighting calculations. The calculations were performed for several typical road luminaires. Based on this research it was found that programs supporting the lighting design calculation process gives more realistic results when the luminaire has accurately determined luminous intensity distribution curve.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130149722","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":"Evaluation of Lighting Parameters at the Workplace with the use Replacements for Incandescent Lamps","authors":"M. Zalesińska, Stanislaw Szwedek, A. Pawlak","doi":"10.1109/LUMENV.2018.8521106","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8521106","url":null,"abstract":"The article evaluates the possibility of using halogen lamps, compact fluorescent lamps and LED lamps as direct substitutes of traditional 100 W incandescent lamps for selected residential lighting applications. A single halogen lamp, six compact fluorescent lamps and six LED light sources were examined. A traditional light bulb was also examined for comparison. All lamps operated in three luminaires. The basic evaluation criterion was the illuminance, uniformity and glare limitation in the place of work. It was found that not all light sources can be considered substitutes of traditional light bulbs. In the case of a luminaire made from a translucent material and one luminaire with a reflector, not all lamps allowed to obtain at least the same lighting parameters in the place where visual work was performed, as when a traditional light bulb was used.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130843969","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":"Evaluation of Selected Parameters of Non-Directional Household Lamps","authors":"M. Zalesińska, Julita Zabłocka, K. Wandachowicz","doi":"10.1109/LUMENV.2018.8521102","DOIUrl":"https://doi.org/10.1109/LUMENV.2018.8521102","url":null,"abstract":"Currently, in place of traditional incandescent lamps, the user of home lighting has the option of using halogen lamps, compact fluorescent lamps and LED lamps. The commercial offer is very wide and diverse, both as to the types of lamps and their prices. Usually, when buying a lamp, the user is guided by the price and parameters given on the packaging. Unfortunately, all parameters on the product packaging only constitute the manufacturer's declaration and do not always correspond to actual parameters. The basic requirements for non-directional lamps for home use are contained in the regulations of the Commission of the European Community. However, only the initial parameters are usually verified. Due to the long duration of measurements, operational parameters are not controlled each time. The article presents the results of tests and analysis of initial parameters and the lamp lumen maintenance factor of selected non-directional lamps for home use after a defined period of operation. The quality of the tested lamps was assessed.","PeriodicalId":389317,"journal":{"name":"2018 VII. Lighting Conference of the Visegrad Countries (Lumen V4)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125578831","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}