센서학회지 (Journal of Sensor Science and Technology)

  • 제25권2호
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  • Pages.131-137
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  • 2016
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  • 1225-5475(pISSN)
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  • 2093-7563(eISSN)
한국센서학회 (The Korean Sensors Society)
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저항 사다리 회로 기반의 다중레벨 가시광을 이용하는 의료 데이터 전송 시스템

Bio-Medical Data Transmission System using Multi-level Visible Light based on Resistor Ladder Circuit

  • 안진영 (부경대학교 차세대 u-헬스케어 기술개발 사업팀) ;
  • 정완영 (부경대학교 전자공학과)
  • An, Jinyoung (Team for Next Generation U-Healthcare Technology Development, Pukyong National University) ;
  • Chung, Wan-Young (Department of Electronic Engineering, Pukyong National University)
  • 투고 : 2016.01.26
  • 심사 : 2016.03.21
  • 발행 : 2016.03.31
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초록

In this study, a multilevel visible light communication (VLC) system based on resistor ladder circuit is designed to transmit medical data. VLC technology is being considered as an alternative wireless communication due to various advantages such as ubiquity, license free operation, low energy consumption, and no radio frequency (RF) radiation characteristics. With VLC even in places where traditional RF communication (e.g., Wi-Fi) is forbidden, significant bio-medical signal including the electrocardiography (ECG) and photoplethysmography (PPG) data can be transmitted. More lives could be saved anywhere by this potential advantage of VLC with a fast emergency response time. A multilevel transmission scheme is adopted to improve the data capacity with keeping simplicity, where data transmission rate can increase by log2m times (m is the number of voltage levels) than that of conventional VLC transmission based on on/off keying. In order to generate multi-amplitudes, resistor ladder circuit, which is a basic principle of digital to analog convertor, is employed, and information is transferred through LED (Light-Emitting Diode) with different voltage level. In the receiver side, multilevel signal is detected by optical receiver including a photo diode. Then, the collected data are analyzed to serve the necessary medical care to the concerned patient.

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참고문헌

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