Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
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Ballistocardiographical Heart Rate Measurement Using Head Mounted 6-axis Accelerometer

머리 착용형 6축 가속도계를 사용한 심탄도 심박수 측정

  • Jinman Kim (Korea Electronics Association) ;
  • Joongjin Kook (Dept. of Information Security Engineering, Sangmyung University)
  • 김진만 (한국전자정보통신산업진흥회) ;
  • 국중진 (상명대학교 정보보안공학과)
  • Received : 2024.05.15
  • Accepted : 2024.06.21
  • Published : 2024.06.30
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Abstract

Recently, wearable virtual reality devices are widely used. These instruments include a 3-axis accelerometer. User's heart rate information in virtual reality contents can be useful for measuring user experience. In this paper, we propose a method to measure the heart rate through a 3-axis accelerometer based on the principle of ballistocardiography without additional sensors. The angular velocity was successively measured in a time series by the 3-axis accelerometer mounted to the head. The frequency of the maximum magnitude is determined as the heart rate through frequency transform and band pass filtering of the time series signal. For verification, the heart rate calculated from photoplethysmography sensors acquired at the same time was compared as ground-truth. In the virtual reality, the user's heart rate information can be extracted without additional heart rate sensor, and the emotional state and fatigue can be measured.

Keywords

References

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