智能手机驱动的低功耗发光装置。

Smartphone-Driven Low-Power Light-Emitting Device.

机构信息

Department of Healthcare Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeollabuk-do, Republic of Korea.

Division of Biomedical Engineering, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju-si 54896, Jeollabuk-do, Republic of Korea.

出版信息

J Healthc Eng. 2017;2017:5076965. doi: 10.1155/2017/5076965. Epub 2017 Apr 13.

DOI:10.1155/2017/5076965

PMID:29065616

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5406741/

Abstract

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.

摘要

低水平光（激光）疗法（LLLT）在最近的过去得到了广泛的研究。现有的 LLLT 研究是基于激光进行的。最近，使用 LED 的研究有所增加。本研究提出了一种基于智能手机的低功率发光装置，用于替代医学的色彩疗法。该装置由控制单元和颜色探头组成。该装置由智能手机通过 USB 即插即用（OTG）技术供电并与之通信。控制单元通过脉冲宽度调制（PWM）控制照明的发射时间和强度，而无需反馈。通过校准解决了无反馈的缺点。为了校准，在每个 10%的 PWM 输出中测量强度。通过线性校准 PWM 值以获得准确的强度。该装置可以控制照明强度，因此可以在各种场景中找到应用。