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2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)最新文献

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2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/blj.2019.8883607
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引用次数: 0
Investigating the Influence of Environmental and Design Parameters on the Thermal Regime of a LED Lamp 研究环境参数和设计参数对LED灯热状态的影响
2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/BLJ.2019.8883529
S. Kadirova, N. Evstatieva, Daniel Kajtsanov
{"title":"Investigating the Influence of Environmental and Design Parameters on the Thermal Regime of a LED Lamp","authors":"S. Kadirova, N. Evstatieva, Daniel Kajtsanov","doi":"10.1109/BLJ.2019.8883529","DOIUrl":"https://doi.org/10.1109/BLJ.2019.8883529","url":null,"abstract":"The increase of the LED’s temperature above a certain threshold decreases significantly their live expectancy. Therefore, it is important to investigate LEDs’ thermal regime during the design process in different conditions for exploitation. The influence of the construction and the environment parameters on the thermal regime of LED lamp was investigated in this paper. The study was done with a specially developed software, based on a model, describing the thermal regime of LED lamps. Next, a methodology for the research has been developed and a simulation study was carried out. The results of this investigation are represented graphically.","PeriodicalId":241572,"journal":{"name":"2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123544815","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}
引用次数: 2
Image-Based Automated Hit Detection and Score Calculation on a Steel Dartboard 基于图像的钢靶自动命中检测与得分计算
2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/BLJ.2019.8883659
Stefan Hensel, M. Marinov, Florian Sprich, Borislav Ganev
{"title":"Image-Based Automated Hit Detection and Score Calculation on a Steel Dartboard","authors":"Stefan Hensel, M. Marinov, Florian Sprich, Borislav Ganev","doi":"10.1109/BLJ.2019.8883659","DOIUrl":"https://doi.org/10.1109/BLJ.2019.8883659","url":null,"abstract":"This paper presents an approach for implementing an automated hit detection and score calculation system for a steel dartboard using a standard webcam. First, the rectilinear field separations of the dartboard are described mathematically by means of line slopes and are than stored. These slopes serve as a basis for later score calculation. In addition, thrown darts have to be detected and the pixel at which the dart cuts the dartboard has to be determined. When this information is known, a comparison is made using the line slopes, allowing the field number of the hit to be detected. The decision for single, double or triple hit is made by evaluating the defined colors on the dartboard. All these functions are then packaged in a Matlab GUI.","PeriodicalId":241572,"journal":{"name":"2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128387854","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}
引用次数: 1
Examination of the Dynamic Variation of the Color Homogeneity of the Emitted Light from a Linear LED Luminaire with a Dynamic Color Adjustment of the Light 采用动态颜色调节的线性LED灯具发射光色均匀性动态变化的研究
2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/BLJ.2019.8883579
V. Shalamanov, Krassimir Simeonov, N. Yaneva
{"title":"Examination of the Dynamic Variation of the Color Homogeneity of the Emitted Light from a Linear LED Luminaire with a Dynamic Color Adjustment of the Light","authors":"V. Shalamanov, Krassimir Simeonov, N. Yaneva","doi":"10.1109/BLJ.2019.8883579","DOIUrl":"https://doi.org/10.1109/BLJ.2019.8883579","url":null,"abstract":"A detailed study of the space uniformity of color distribution from LED luminaire with “tunable white” light is presented in a regime of dimming from 100% to 1%. The results of this work will be the base for detailed research work on the influence of this lighting on human wellbeing","PeriodicalId":241572,"journal":{"name":"2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)","volume":"198 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124370443","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}
引用次数: 2
Balkan Light Junior 2019 Copyright Page 巴尔干之光少年2019版权页面
2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/blj.2019.8883605
{"title":"Balkan Light Junior 2019 Copyright Page","authors":"","doi":"10.1109/blj.2019.8883605","DOIUrl":"https://doi.org/10.1109/blj.2019.8883605","url":null,"abstract":"","PeriodicalId":241572,"journal":{"name":"2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115670927","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}
引用次数: 0
Considerations on disturbances in the electrical supply network caused by LEDs light projectors led投影仪对供电网络干扰的思考
2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/BLJ.2019.8883537
S. Digă, Nicolae Digă, Paul Nicoleanu, I. Pătru
{"title":"Considerations on disturbances in the electrical supply network caused by LEDs light projectors","authors":"S. Digă, Nicolae Digă, Paul Nicoleanu, I. Pătru","doi":"10.1109/BLJ.2019.8883537","DOIUrl":"https://doi.org/10.1109/BLJ.2019.8883537","url":null,"abstract":"In the first part of this paper, the authors present the results of the luminotechnical calculations based on the reconstruction of the photometric curves of a LEDs projector PREMIUM LUX LED 38dgr type. Thus by using the equal plane angles method, the emitted total luminous flux and the efficiency of this luminaire were determined. Then was analysed the illuminance’s distribution in the horizontal and vertical plane, at different heights and the rectangular surface illuminated by the considered luminaire. In the second part of the paper is presented the analysis of disturbances in the electrical supply network caused by this type of LEDs light projectors. In this regard the test report, provided by a harmonic and flicker analyzer, Type HAR 1000-1P (EMC Partner AG Switzerland) was used. The results of the measurements were interpreted, making observations regarding harmonic current emissions, voltage fluctuations and flicker indicators.","PeriodicalId":241572,"journal":{"name":"2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130525240","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}
引用次数: 2
Biologically active luminaire with four LEDs 带有四个led的生物活性灯具
2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/BLJ.2019.8883638
M. Kobav, M. Klinkon
{"title":"Biologically active luminaire with four LEDs","authors":"M. Kobav, M. Klinkon","doi":"10.1109/BLJ.2019.8883638","DOIUrl":"https://doi.org/10.1109/BLJ.2019.8883638","url":null,"abstract":"Nowadays we all know that lighting has a significant influence on human beings. And we know that influence can be positive and negative. With thoughtful lighting design and choosing the appropriate luminaires, it is possible to maximize positive effects and minimize negative effects. When we are talking about appropriate luminaries, we are having in mind biologically active luminaire with tuneable spectra. Biologically active luminaire is intended to improve the quality of life for people who spend most of the day exposed to artificial lighting. With changing correlated colour temperature and light intensity and with a sufficient amount of blue light, it is possible to affect biological processes in the human body.","PeriodicalId":241572,"journal":{"name":"2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125516903","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}
引用次数: 1
Light Pollution – “Borders” of Lighting Design 光污染——照明设计的“边界”
2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/BLJ.2019.8883614
Teodor Kyuchukov
{"title":"Light Pollution – “Borders” of Lighting Design","authors":"Teodor Kyuchukov","doi":"10.1109/BLJ.2019.8883614","DOIUrl":"https://doi.org/10.1109/BLJ.2019.8883614","url":null,"abstract":"History, especially the latest, shows that every human activity is in a state of development. At a certain point however, that development begins to move out from the socially acceptable norms. Often the developing process of lighting technology passes the reasonable limits. The megalomania manifests itself in the light sctattering and the uncontrolled overlit areas of the natural environment and the inner spaces. The question that still arises at present is when the average citizen and the representatives of lighting industry will identify the existence of light pollution and visual glare as harm rather than a benefit. Visual culture is educated through the realization of adequate lighting environment. Several campaigns wake up and focus public attention and awareness on the light pollution issue and its impact. The benefit of those campaigns does not relate to their demonstrational manner, but to the lack of adequate energy and environmental culture that should corresponds to the present high-technological progress. It is necessary to rethink the artificial light, the understanding of the hygiene of lighting, especially if it is overdosed and unsatisfactorily managed. Aren’t we on the verge of a new lighting technical age?","PeriodicalId":241572,"journal":{"name":"2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123379323","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}
引用次数: 4
Photovoltaic roof systems for educational buildings 教育建筑的光伏屋顶系统
2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/BLJ.2019.8883606
A. Pachamanov, B. Boychev, D. Pavlov, K. Georgiev, K. Kassev
{"title":"Photovoltaic roof systems for educational buildings","authors":"A. Pachamanov, B. Boychev, D. Pavlov, K. Georgiev, K. Kassev","doi":"10.1109/BLJ.2019.8883606","DOIUrl":"https://doi.org/10.1109/BLJ.2019.8883606","url":null,"abstract":"A roof photovoltaic system (PVS) for power supply to a university building is being considered. The large roof areas of these buildings make it possible to fully meet the needs of electricity and a large part of the heat demand during the heating season. During the autumn-winter season, electricity from the PV system is used to charge the rechargeable battery (RB) for lighting and to supply air-water heat pumps to the heating installation. The electricity produced during the spring-summer season is sold to the energy system. The funds received cover a large part of winter heating costs. A small lithium-ion RB is provided to align the daily load schedule. The proposed model provides minimum energy costs annually and is planned to be implemented as a training center at TU-Sofia under OPIC Operational Program, proposal “Optimization of operating costs of building lighting and heating through the use of renewable energy sources”","PeriodicalId":241572,"journal":{"name":"2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)","volume":"86 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113961431","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}
引用次数: 1
Rehabilitation and Remote Control of Municipalities Street Lighting 市政街道照明的修复和远程控制
2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior) Pub Date : 2019-09-01 DOI: 10.1109/BLJ.2019.8883673
A. Pachamanov, K. Kassev
{"title":"Rehabilitation and Remote Control of Municipalities Street Lighting","authors":"A. Pachamanov, K. Kassev","doi":"10.1109/BLJ.2019.8883673","DOIUrl":"https://doi.org/10.1109/BLJ.2019.8883673","url":null,"abstract":"For road/street lighting in the EU, Regulation 245/2009 applies. A major problem after the rehabilitation of street lighting systems under the EC Operational Programs is the monitoring of the EU green public procurement criteria (EU GPPC). These criteria cover three main sections: energy consumption, light pollution and life cycle costing of the installations. The paper examines the possibilities for rehabilitation of public lighting in the municipalities of the Republic of Bulgaria, the technologies for the construction of the transmission environment and the devices that monitor and manage the public lighting by regions.","PeriodicalId":241572,"journal":{"name":"2019 Second Balkan Junior Conference on Lighting (Balkan Light Junior)","volume":"30 18","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113984238","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}
引用次数: 8
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