A Portable ECG System Coupled with a Smartphone

스마트폰과 연동한 휴대용 심전도계

  • Kim, Kiwan (Dept. of Electronic Engineering, Soonchunhyang University) ;
  • An, Jonghyun (Dept. of Electronic Engineering, Soonchunhyang University) ;
  • Park, Kwangmin (Dept. of Electronic Engineering, Soonchunhyang University)
  • 김기완 (순천향대학교 전자공학과) ;
  • 안종현 (순천향대학교 전자공학과) ;
  • 박광민 (순천향대학교 전자공학과)
  • Received : 2021.01.21
  • Accepted : 2021.03.10
  • Published : 2021.03.31


The electrocardiogram(ECG) and heart rates are essential for diagnosing heart disease. However, conventional portable ECG devices are possible to only measure heart rates or have limitations in how and where they are measured. In this paper, a portable ECG system in which ECG waveforms and heart rates are displayed on smartphone screens is developed. A smartphone is used as display equipment instead of a computer screen for continuous monitoring. The developed ECG system filters and amplifies detected analog ECG signals. Next, it converts the amplified analog ECG signals into digital signals, then transmits to the smartphone via Bluetooth communication. This ECG system can display and store biomedical signals on a smartphone through the application. As a result, the waveform and heart rates of the developed portable ECG system has been confirmed to be similar to those of existing medical devices.


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