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http://dx.doi.org/10.7472/jksii.2016.17.1.35

Smartphone-based Wavelength Control LED Lighting System according to the Sleep-Wake Cycle of Occupants  

Kim, Yang-Soo (Dept. of Computer Science & Engineering, Kongju National University)
Kwon, Sook-Youn (Smart Natural Space Research Center, Kongju National University)
Hwang, Jun (Dept. of Multimedia, Seoul Womens University)
Lim, Jae-Hyun (Dept. of Computer Science & Engineering, Kongju National University)
Publication Information
Journal of Internet Computing and Services / v.17, no.1, 2016 , pp. 35-45 More about this Journal
Abstract
Melatonin hormone involved in human's circadian rhythm adjustment sensitively responds to light's specific short wavelength ratio. A shift worker's circadian rhythm disturbance and sleep disorder are caused by the existing lighting conditions, whose short wavelength ratio is fixed. The life pattern of a shift worker changes irregularly because of irregular working hours and the same lighting environment; thus, his/her concentration is reduced. For such a reason, negative effects ensue to the detriment of healthy everyday life, including a high risk of accidents or having unsound sleep after leaving work. A smartphone-based wavelength control LED lighting system that targets shift workers and that can easily measure and control lighting suitable for wake-sleep cycle, according to working hours and closing hours, is proposed in this paper. First, after the light characteristics of LED lighting that changes depending on light control ratio are measured through the color sensor installed on the smartphone and the externally-linked Mini-Spectrometer, they are stored in the database. Based on the stored optical characteristics data, the measurement module and light control module are implemented. Lighting is offered using a control ratio having the maximum rate of short wavelength in consideration of the target illuminance, classified according to work type by identifying working hours as time when waking is required for shift workers. After a shift work leaves work, the amount of lighting is varied, using a control ratio having a minimum short wavelength rate so that a shift worker can enter the sleep state naturally.
Keywords
Sleep-Wake; Circadian rhythm; Lighting System; LED; Smartphone;
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  • Reference
1 Kim gon, "Healthy Light in the Era of Well-being", Architectural Institute of Korea, Volume. 49, No. 5, pp. 51-55, June 2005. http://www.dbpia.co.kr/Article/NODE00595270
2 Yunjung Kwon, "LED Control For Therapy Using Comparator", Conference of Korean Society For Internet Information, Volume. 14, No. 2, 2013. http://www.dbpia.co.kr/Article/NODE02279520
3 Soyoung Ahn, Dongmin Shin, Dongkyu Shin, Dongil Shin, "Analysis of user state and living space control system using EEG",Conference of Korean Society For Internet Information, Volume. 15, No. 2, 2014. http://www.dbpia.co.kr/Article/NODE06140760
4 RTA Prado, FL Ferreira, "Measurement of albedo and analysis of its influence the surface temperature of building roof materials", Energy and Buildings, Volume. 37, No. 4, pp. 295-300, April 2005. 10.1016/j.enbuild.2004.03.009   DOI
5 SW Lockly, et al., CA Czeisler, "High sensitivity of the human circadian melatonin rhythm to resetting by short wavelength light", J Clin Endocrinol Metab, Volume. 88, No. 9, pp. 4502-4505, September 2003. http://dx.doi.org/10.1210/jc.2003-030570   DOI
6 HR Wright, LC Lack, DJ Kennaway, "Differential effects of light wavelength in phase advancing the melatonin rhythm", Journal of Pineal Research, Volume. 36, No. 2, pp. 140-144, January 2004. http://dx.doi.org/10.1046/j.1600-079X.2003.00108.x   DOI
7 Kyoung-Sil Kim, An-Seop Choi, "Study of Relationship between Light and Melatonin", The Korean Institute of Illuminating and Electrical Installation Engineers, pp. 7-8, November 2011. http://www.dbpia.co.kr/Article/NODE01787878
8 Lucy A. Nweman, Marquis T. Walker, R. Lane Brown, et al., "Melanopsin forms a functional shortwavelength photopigment", Biochemistry, Volume. 42, No. 44, pp. 12734-12738, October 2003. http://dx.doi.org/10.1021/bi035418z   DOI
9 Christian Cajochen, et al., "High sensitivity of human melatonin, alertness, thermoregulation, and heart rate to short wavelength light", The Journal of Clinical Endocrinology & Metabolism, Volume. 90, No. 3, pp. 1311-1316, March 2005. http://dx.doi.org/10.1210/jc.2004-0957   DOI
10 Takeshi Morita, Hiromi Tokura, "The Influence of Different Wavelengths of Light of Human Biological Rhythms", Applied Humen Science, Volume. 17, No. 3, pp. 91-96, 1998. http://doi.org/10.2114/jpa.17.91   DOI
11 Jung Ho-Youn, Choi Jong-Dae, Lee Sa-Ra, Yun Geun_Young, "The Changes of Circadian rhythm on Wavelength of Light", Architectural Institute of Korea, Volume. 32, No. 2, pp. 309-310, October 2012. http://www.dbpia.co.kr/Article/NODE02216747
12 Kim Yang-Soo, et al., "LED Lighting System based on Smartphone possible of Wavelength Control", Conference of Korean Society For Internet Information, Volume. 16, No. 1, 2015. http://www.dbpia.co.kr/Article/NODE06297726
13 Dea-Ho Kim, Sang-Seol Lee, "The Analysis of Influences that Night Work of Shiftworkers affect at Sleep and Social Life", Korean Association of Human Resource Development, Volume. 2, No. 2, pp.163-182, December 2000. http://www.dbpia.co.kr/Article/NODE00502188
14 Sook-Youn Kwon, "Design of Natural Light Reproduction System using a Matching Algorithm based on Chromaticity Coordinates", PhD dissertation, Dept. of Computer Science & Engineering, Kongju National University, December 2013. http://www.riss.kr/link?id=T13373917
15 C.N. Ong, et al., "Shiftwork and work injuries in an iron and steel mill", Applied Erhonomics, Volume. 18, No. 1, pp. 51-56, March 1987. http://dx.doi.org/10.1016/0003-6870(87)90070-6   DOI
16 Timothy H. Monk, et al., "Maintaining safety and high performance on shiftwork", Applied Erhonomics, Volume. 27, No. 1, pp. 17-23, February 1996. http://dx.doi.org/10.1016/0003-6870(95)00048-8   DOI
17 Sun Jung Han, Eun Yeon Joo, "Circadian Rhythm Sleep Disorders", J Kor Sleep Soc, Volume. 5, pp. 74-81, December 2008. http://dx.doi.org/10.13078/jksrs.08013   DOI
18 C. S. McCamy, "Correlated color temperature as an explicit function of chromaticity coordinates", Color Research & Application, Volume. 17, No. 2, pp. 142-144, April 1992. http://dx.doi.org/10.1002/col.5080170211   DOI
19 In-Tae Kim, et al., "Comparison of Calculated and Measured CCT of the Light Sources", The Korean Institute of Illuminating and Electrical Installation Engineers, pp. 103-106, March 2010. http://www.dbpia.co.kr/Article/NODE01458354
20 "KSA 3011", Recommended levels of illumination, 1998. http://www.kssn.net/StdKS/KS_detail.asp?K1=A&K2=3011&K3=2