Page 38 - ITU KALEIDOSCOPE, ATLANTA 2019

2019 ITU Kaleidoscope Academic Conference

society in most countries around the world becomes much example, Internet of Radio and Light in [8][9], are discussed
more severe than ever before. Depression is a high-risk in section 5.
disease for the senior people, which seriously affects the
physical and mental health, and eventually jeopardizes the 2. SYSTEM DESCRIPTION
quality of life [5]. Numerous studies have shown that light
stimulation can effectively alleviate depression or other The strategic roadmap from 2015 to 2025 of the European
psychological disorders. Some literature has attempted to Lighting Association is shown in Figure 1, indicating that the
systematically analyze the research trends for the optical semiconductor lighting started with the environment
intervention therapy for senile depression under the indoor protection purpose is currently in the stage of intelligent
lighting environment, and to combine the current light lighting, which is about to transit to human-oriented lighting,
environment status of retirement buildings with the visual, that is, smart lighting [10]. The goal is to achieve smart
psychological and physiological characteristics of the senior lighting that supports healthy lighting by 2025 and to provide
people. Following this, key considerations of the healthy people with a healthy and comfortable indoor living
light environment of the nursing space against the depression environment. However, during the current stage of
of the seniors [6] [7], are given. As an effective treatment, intelligent lighting, the main goal is still to save energy.
the optimal dose of phototherapy treatment time, light Considering that the intensity and color temperature of LED
intensity and duration of illumination need to be intelligently light sources can be easily controlled, ICT technology
adjusted depending on the type of illness, the severity of the combined with sensors and the intelligent driver in the
condition, and individual characteristics. Phototherapy has luminaire can be used to monitor and track environmental
advantages that are easy to control and implement with changes in real time.
negligible side effect when compared with traditional drug
treatments. More importantly, phototherapy provides a
compatible aid with the regular drugs for the treatment of
mental illness, which can accelerate improvement and
alleviate the symptoms.

It is anticipated that with the continuous development of
LED lighting technologies, together with the ever-increasing
in-depth research on the relationship between LED lighting
and human health, the adjustment of the light intensity and
color temperature of LEDs without being perceived by the
human eyes will be able to effectively alleviate, treat, and
may even cure certain aging diseases and improve life
quality for human beings.

Based on the above investigation on lighting and rhythm, this
paper proposes the system structure of IoL and seeks its
feasibility of using visible light to treat Alzheimer's disease Figure 1 - The strategic roadmap from 2015 to 2025 of
and possibly other diseases considering the latest progress of the European Lighting Association [10]
semiconductor LED illumination. The paper is organized as
follows: After a brief survey on the recent developments in Scenario switchovers for lighting control, intensity
the related areas of illumination and especially in human adjustment, color temperature changes and even the color
science in section 1, the functional blocks and the major control can be fully supported to achieve a variety of lighting
research areas for IoL are briefly illustrated in section 2. The functionalities. Smart lighting (human-centric lighting) is the
experiment set-up on the mice and the preliminary impact advanced stage of lighting control. With the help of the
analysis of the visible light on the cranial, rhythm, and Internet of things, cloud computing technology and data
memory-related brain regions (hippocampus) of the cranial mining, it becomes possible to understand users’ lighting
nervous system and its intrinsic mechanisms are preferences, deeply digging into the lighting needs of users,
demonstrated in section 3, exploring the intrinsic and automatically building up the comfortable and healthy
mechanisms and mitigation impact of visible light on lighting environment by intelligent lighting control. And this
Alzheimer's disease. The significance of the results in this will be further enhanced with the support of artificial
experimental data from mice and primary explanations are intelligence technologies such as big data and machine
shown in section 4. And then the possibility of non-intrusive learning, together with the active sensing of the users’
optical intervention therapy, further experiments and environment.
medical clinical practice and proposing IoL standards, such
as binary phase shift keying (BPSK), quadrature phase shift In this paper, we proposed the concept of the Internet of light
keying (QPSK), and even orthogonal frequency division (IoL), an intelligent lighting network for indoor applications,
multiplexing (OFDM) which have been quite commonly as a platform in hope that this IoL could provide the
used in the visible light communications systems, for infrastructure to address the aforementioned diseases of

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