Smartphone-Driven Low-Power Light-Emitting Device
Joint Authors
An, Hea-Ja
Kim, Kyung-Won
Oh, Han-Yeong
Kim, Nam-Gyun
Park, Kyoung-Jun
Ryu, Mun-Ho
Source
Journal of Healthcare Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-04-13
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Low-level light (laser) therapy (LLLT) has been widely researched in the recent past.
Existing LLLT studies were performed based on laser.
Recently, studies using LED have increased.
This study presents a smartphone-driven low-power light-emitting device for use in colour therapy as an alternative medicine.
The device consists of a control unit and a colour probe.
The device is powered by and communicates with a smartphone using USB On-The-Go (OTG) technology.
The control unit controls emitting time and intensity of illumination with the configuration value of a smartphone application.
Intensity is controlled by pulse width modulation (PWM) without feedback.
A calibration is performed to resolve a drawback of no feedback.
To calibrate, intensity is measured in every 10 percent PWM output.
PWM value is linearly calibrated to obtain accurate intensity.
The device can control the intensity of illumination, and so, it can find application in varied scenarios.
American Psychological Association (APA)
An, Hea-Ja& Kim, Kyung-Won& Ryu, Mun-Ho& Oh, Han-Yeong& Kim, Nam-Gyun& Park, Kyoung-Jun. 2017. Smartphone-Driven Low-Power Light-Emitting Device. Journal of Healthcare Engineering،Vol. 2017, no. 2017, pp.1-6.
https://search.emarefa.net/detail/BIM-1181026
Modern Language Association (MLA)
An, Hea-Ja…[et al.]. Smartphone-Driven Low-Power Light-Emitting Device. Journal of Healthcare Engineering No. 2017 (2017), pp.1-6.
https://search.emarefa.net/detail/BIM-1181026
American Medical Association (AMA)
An, Hea-Ja& Kim, Kyung-Won& Ryu, Mun-Ho& Oh, Han-Yeong& Kim, Nam-Gyun& Park, Kyoung-Jun. Smartphone-Driven Low-Power Light-Emitting Device. Journal of Healthcare Engineering. 2017. Vol. 2017, no. 2017, pp.1-6.
https://search.emarefa.net/detail/BIM-1181026
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1181026