Adaptive dimming scheme based daylight pipe integrated indoor lighting system under Perez All-weather sky model

Mandal, Purnima; Roy, Biswanath

doi:10.1109/wiecon-ece.2016.8009122

Cited by 5 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are many papers describing occupancy-based adaptive control systems monitoring the illuminance distribution resulting from the luminaire output and incident daylight, combined. The output of the luminaires is then adjusted in order to achieve a desired target illuminance [8][9][10][11][12][13] . Such smart lighting clearly has major advantages in terms of efficiency, lighting quality and controllability by the user.…”

Section: Introductionmentioning

confidence: 99%

“…There are many papers describing occupancy-based adaptive control systems monitoring the illuminance distribution resulting from the luminaire output and incident daylight, combined. [6][7][8][9][10][11] In all of these cases, the total output of the individual light sources is controlled. Modern light utilisation research is epitomised by innovations in software, rather than inventing hardware to achieve similar or improved functionality.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compact illumination system with variable beam direction and beam divergence

Rondelez

Ryckaert

Meuret

2020

Lighting Research & Technology

View full text Add to dashboard Cite

Countless approaches to optimise lighting conditions for indoor and outdoor applications are described in the literature by adaptive dimming schemes or control algorithms. Those methods rely on adapting the emitted flux of individual luminaires in order to adjust lighting conditions to varying circumstances. Complex illumination requirements are tackled by controlling the output of every independent luminaire. In this case, the innovation is rather in software than in hardware, and such approaches are limited by how the LED fixtures can be manipulated. Lighting fixtures with a tuneable radiation pattern are rare, or these fixtures are rather large. This paper introduces a compact lighting system with a collimated light beam of which the beam direction and beam divergence can be adjusted electronically. To realise this optical functionality, a focus tuneable lens and rotatable mirror are combined with two custom-made aplanatic lenses in front of a compact, high-brightness LED. This paper elaborates the optical design of this novel illumination system and discusses the experimental performance of the realised demonstrator. The system functionality is validated by comparing the experimental lighting performance to optical simulations conducted with ray-tracing software. With the proposed system, a fast and flexible adaptation of the generated illumination distribution is possible.

show abstract

Section: Introductionmentioning

confidence: 99%

“…There are many papers describing occupancy-based adaptive control systems monitoring the illuminance distribution resulting from the luminaire output and incident daylight, combined. [6][7][8][9][10][11] In all of these cases, the total output of the individual light sources is controlled. Modern light utilisation research is epitomised by innovations in software, rather than inventing hardware to achieve similar or improved functionality.…”

Section: Introductionmentioning

confidence: 99%

Compact illumination system with variable beam direction and beam divergence

Rondelez

Ryckaert

Meuret

2020

Lighting Research & Technology

View full text Add to dashboard Cite

show abstract

“…Due to the growing demand for electricity, and hence, the growing amount of pollution that gets into the environment as a result of energy production based on fossil fuels, there is a great pressure on the use of energy-saving technologies in all branches of the economy, also in lighting [4,14]. The reduction of operating costs is influenced by many factors, such as: the degree of use of daylight for lighting of halls, the use of luminaires with energy-saving sources and regulation of the luminous flux [3], and the use of adaptive lighting systems [2,12,13].…”

Section: Introductionmentioning

confidence: 99%

A luminaire with variable light distribution

et al. 2018

View full text Add to dashboard Cite

Industrial facilities such as production and storage halls are a specific environment, which is usually characterized by a large usable area, which is managed in a way that brings together in the given area many functional zones for various purposes. Frequent changes in the management of industrial halls gives a need to change the lighting method. In such a situation, a lighting solution that enables the photometric characteristics of the luminaires to be adapted to variable development of the facility, covering not only the quantitative regulation of the luminous flux, but also the direction of its radiation into the environment, can be a helpful solution. The article presents an innovative concept of a luminaire, which makes it possible to change the light distribution without the need to replace optical elements. Simulation tests were carried out for the developed luminaire in order to check the possibility of obtaining the assumed distribution and shapes of light spots on the working plane. Thanks to the application of this solution in an environment where there is a need for frequent changes in the development of usable space requiring changes in lighting conditions, it is possible to dynamically adjust the characteristics of the installed system to new environmental conditions.

show abstract