1. A practical BCG measuring system with bed sensors and algorithm for heartbeat detection
- Author
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Masaru Mimura, Masaki Nagura, Taishiro Kishimoto, and Yasue Mitsukura
- Subjects
Computer science ,business.industry ,System of measurement ,010401 analytical chemistry ,Continuous monitoring ,Process (computing) ,Heartbeat detection ,020206 networking & telecommunications ,Pattern recognition ,02 engineering and technology ,Interval (mathematics) ,01 natural sciences ,Signal ,0104 chemical sciences ,cardiovascular system ,0202 electrical engineering, electronic engineering, information engineering ,Sleep (system call) ,Artificial intelligence ,business ,SIMPLE algorithm - Abstract
Ballistocardiogram (BCG) is useful and informative signal result from the cardiac activity. In this paper, we present a practical BCG measurement system with bed sensors. Moreover, the simple algorithm to detect all individual heartbeats and estimate beat-to-beat interval lengths is presented. These are effective for all night continuous monitoring of cardiovascular system and enable us to detect sleep stage. Heart beats is detected by cross-correlation method. This method has three steps, preprocessing, typical wave form creation and cross-correlation calculation. Output of this process were validated with 10 subjects. As the results, the average 71.5% of the beat-to-beat intervals were detected. Moreover this study revealed that the individual difference is significant factor to detect heart beats precisely.
- Published
- 2018
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