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Applied Sciences
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Smart Lighting
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Smart Lighting

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: closed (31 January 2019) | Viewed by 15434

Special Issue Editors

Prof. Jussi Parkkinen

E-Mail Website
Guest Editor
School of Computing, University of Eastern Finland, 70100 Kuopio, Finland
Interests: spectral color science; lighting research; pattern recognition
Prof. Dr. Alain Tremeau

E-Mail Website
Guest Editor
Laboratoire Hubert Curien UMR 5516, Université Jean Monnet, 42023 Saint-Étienne, France
Interests: human body pose estimation; human body tracking and trajectories estimation; environmental remote sensing; computer vision; color imaging
Special Issues, Collections and Topics in MDPI journals
Dr. Vineetha Kalavally

E-Mail Website
Guest Editor
School of Engineering, Monash University Malaysia, Bandar Sunway 46150, Malaysia
Interests: applications of solid state lighting (SSL); intelligent lighting systems; quality of light; non-visual effects of light; visual inspection systems using SSL; visible light communications; Raman amplifiers; lighting for visually impaired

Special Issue Information

Dear Colleagues,

The successful production of highly-efficient blue light emitting diodes (LED) was a remarkable milestone in lighting technology. This enabled the development of LEDs for general lighting in public and commercial places, as well as in homes.

Moving from traditional incandescent and fluorescent light sources to LED lighting was originally driven by energy savings achieved by replacing the light bulbs with LEDs, either retrofit or by new luminaires. Soon, however, the nature of LEDs being solid-state devices was utilized and the energy efficiency was shown to be improved by adding intelligence into lighting control.

Alongside, the understanding of the effect of light and its different spectral components to the human wellbeing is increasing. An important step in this matter was the discovery of non-visual light sensing pathway in the human eye including the intrinsically photosensitive retinal ganglion cells (ipRGC), sensors regulating the circadian rhythm.

The shift to LED luminaires has therefore led to a shift in lighting technology from static to highly dynamic, requiring the integration of color science, human psychology and physiology, advanced electronics, sensor technology and the Internet of Things.

This Special Issue covers all aspects of novel lighting systems, where intelligence has been embedded into the lighting system. These include methods for light production, energy saving, control systems, visible light communications, as well as developing lighting for wellbeing, context aware lighting and lighting for special needs. Both indoor and outdoor lighting are covered and the applications in the new fields of intelligent lighting in game industry, spectral imaging, etc., are also welcome.

Prof. Jussi Parkkinen
Prof. Alain Tremeau
Dr. Vineetha Kalavally
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Smart lighting
  • Lighting for wellbeing
  • Non-visual effect of light
  • Visible light communication
  • Light in spectral imaging
  • Light quality
  • Connected lighting
  • Spectral sensing

Published Papers (4 papers)

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Research

12 pages, 309 KiB  
Article
Multiuser Transmit Precoding Design for Dimming Compatible Visible Light Communications
by Baolong Li, Xiaomei Xue, Qiong Wu, Yang Liu, Guilu Wu and Zhengquan Li
Appl. Sci. 2019, 9(6), 1147; https://doi.org/10.3390/app9061147 - 18 Mar 2019
Viewed by 1894
Abstract
In multiuser visible light communication (VLC) systems, many transmit precoding (TPC) techniques have been investigated to suppress multiuser interference. However, these conventional works restrict their modulation to the special case of zero mean, which inherently limits their application to some popular modulations associated [...] Read more.
In multiuser visible light communication (VLC) systems, many transmit precoding (TPC) techniques have been investigated to suppress multiuser interference. However, these conventional works restrict their modulation to the special case of zero mean, which inherently limits their application to some popular modulations associated with the non-zero mean in VLC, such as pulse position modulation (PPM). Since the modulation with non-zero mean leads to more intricate optical power constraints and design objective functions than the case of zero mean, the TPC design that can support a general modulation is still an open problem. In the paper, we conceive of a general solution of the TPC scheme combined with dimming control for multiuser VLC systems, which is capable of mitigating multiuser interference, while at the same time, achieving the desired dimming level. The proposed scheme is applicable to a wide range of modulations in VLC, such as pulse amplitude modulation (PAM), PPM, and so on. Simulation results demonstrate that the proposed scheme outperforms the traditional pseudo-inverse-based zero-forcing TPC in terms of bit error rate (BER). Full article
(This article belongs to the Special Issue Smart Lighting)
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14 pages, 1604 KiB  
Article
Energy-Efficient Optimization Design for the Multi-Color LED Based Visible Light Communication Systems under Illumination Constraints
by Yu Zuo and Jian Zhang
Appl. Sci. 2019, 9(1), 1; https://doi.org/10.3390/app9010001 - 20 Dec 2018
Cited by 16 | Viewed by 2815
Abstract
Visible light communications (VLCs) utilizing multi-color light-emitting diodes (LEDs) can achieve a high modulation bandwidth and high-quality illumination compared with phosphor-converted LEDs, which have attracted much attention. However, the spectrum overlapping of different colors may cause the crosstalk problem, which should be considered [...] Read more.
Visible light communications (VLCs) utilizing multi-color light-emitting diodes (LEDs) can achieve a high modulation bandwidth and high-quality illumination compared with phosphor-converted LEDs, which have attracted much attention. However, the spectrum overlapping of different colors may cause the crosstalk problem, which should be considered in the practical multi-color LED-based VLC systems. Due to the ever-increasing energy consumption, the interest in an energy-saving communication technique has further increased. In this paper, in order to maximize energy efficiency, an optimization problem of the optical power allocation scheme is formulated for the multi-color LED-based VLC systems under the necessary communication requirements and illumination constraints with luminance, chromaticity, and signal to interference plus noise ratio (SINR) constraints. Simulation results indicate that the proposed optimal power allocation scheme can reduce energy consumption while satisfying the illumination and communication requirements. Full article
(This article belongs to the Special Issue Smart Lighting)
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18 pages, 5084 KiB  
Article
Illuminance Reconstruction of Road Lighting in Urban Areas for Efficient and Healthy Lighting Performance Evaluation
by Qi Yao, Hongbing Wang, Jim Uttley and Xiaobo Zhuang
Appl. Sci. 2018, 8(9), 1646; https://doi.org/10.3390/app8091646 - 13 Sep 2018
Cited by 11 | Viewed by 5295
Abstract
Big lighting data are required for evaluation of lighting performance and impacts on human beings, environment, and ecology for smart urban lighting. However, traditional approaches of measuring road lighting cannot achieve this aim. We propose a rule-of-thumb model approach based on some feature [...] Read more.
Big lighting data are required for evaluation of lighting performance and impacts on human beings, environment, and ecology for smart urban lighting. However, traditional approaches of measuring road lighting cannot achieve this aim. We propose a rule-of-thumb model approach based on some feature points to reconstruct road lighting in urban areas. We validated the reconstructed illuminance with both software simulated and real road lighting scenes, and the average error is between 6 and 19%. This precision is acceptable in practical applications. Using this approach, we reconstructed the illuminance of three real road lighting environments in a block and further estimated the mesopic luminance and melanopic illuminance performance. In the future, by virtue of Geographic Information System technology, the approach may provide big lighting data for evaluation and analysis, and help build smarter urban lighting. Full article
(This article belongs to the Special Issue Smart Lighting)
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17 pages, 5151 KiB  
Article
A Single-Stage High-Power Factor Converter with Synchronized Self-Excited Technique for LED Lighting
by Yong-Nong Chang, Shun-Yu Chan and Hung-Liang Cheng
Appl. Sci. 2018, 8(8), 1408; https://doi.org/10.3390/app8081408 - 20 Aug 2018
Cited by 5 | Viewed by 4557
Abstract
This paper proposes a single-stage, high power-factor light-emitting diode (LED) driver with a self-excited control scheme for the power switches. The self-excited mechanism is accomplished by fetching the driving voltages from a center-tapped transformer. The frequency of the driving voltages is exactly the [...] Read more.
This paper proposes a single-stage, high power-factor light-emitting diode (LED) driver with a self-excited control scheme for the power switches. The self-excited mechanism is accomplished by fetching the driving voltages from a center-tapped transformer. The frequency of the driving voltages is exactly the same as the resonant frequency of the resonant converter, thus synchronizing the resonant frequency with the switching frequency and achieving zero-voltage switching (ZVS) and zero-current switching (ZCS) of power switches. The circuit topology is mainly composed of a half-bridge LC resonant converter, along with a boost-type power-factor corrector (PFC) to fulfill the single-stage structure, meaning that the presented LED driver possesses high power-factor features and low switching loss. Finally, a 40 W prototype circuit is implemented and tested, and the experimental results exhibit a satisfactory performance. Full article
(This article belongs to the Special Issue Smart Lighting)
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