무구속 건강모니터링을 위한 심탄도 계측 시스템 구현 및 평가
Implementation and evaluation of the BCG measurement system for non-constrained health monitoring
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초록
This research proposes measuring of BCG(ballistocardiogram) to monitor heart activities in a non-constrained environment, at home or work. Unlike with ECG, measuring BCG does not require the attachment of leads on the subject’s body and allows signal measuring in a non-constrained state. It enables effective long-term monitoring of cardiac conditions. In this study a chair type BCG measurement system to continuous monitor the activity of the heart is implemented. The instrument consists of upper petal and ready for press of chair load cell sensor is attached to measure the change of the object’s weight. In order to extract the output ballistic signal from the weight and force sensor signals. Beside the signal processing circuit for the digital conversion, the ballistic signal is detected using DAQ equipment. Signal processing algorithm including wavelet transforms for noise cancellation, template matching for normalization and peak detection in BCG is developed. ECG and BCG were concurrently measured to evaluate the performance of the system, and comparing the characteristics of the two signals verified the possibility of the system in non-constrained and nonconscious health monitoring.
Abstract
This research proposes measuring of BCG(ballistocardiogram) to monitor heart activities in a non-constrained environment, at home or work. Unlike with ECG, measuring BCG does not require the attachment of leads on the subject’s body and allows signal measuring in a non-constrained state. It enables effective long-term monitoring of cardiac conditions. In this study a chair type BCG measurement system to continuous monitor the activity of the heart is implemented. The instrument consists of upper petal and ready for press of chair load cell sensor is attached to measure the change of the object’s weight. In order to extract the output ballistic signal from the weight and force sensor signals. Beside the signal processing circuit for the digital conversion, the ballistic signal is detected using DAQ equipment. Signal processing algorithm including wavelet transforms for noise cancellation, template matching for normalization and peak detection in BCG is developed. ECG and BCG were concurrently measured to evaluate the performance of the system, and comparing the characteristics of the two signals verified the possibility of the system in non-constrained and nonconscious health monitoring.
참고문헌 (12)
- 오해석, "u-헬스케어 기술 및 표준화 동향", TTA Journal, (112) (2007)
- J. Mühlsteff, "Wearable approach for continuous ECG and activity patient monitoring", Proceedings of the 26th Annual International Conference of the IEEE EMBS, pp.2184~2187 (2004)
- J. Ottenbacher, "Integration of a bluetooth based ECG system into clothing", Eighth IEEE International Symposium on Wearable Computers (ISWC'04),, pp.186~187 (2004)
- J. Alihanka, "“A new method for long-term monitoring of the ballistocardiogram, heart rate, and respiration”", American Journal of Physiology, 240, pp.289~297 (1993)
- X. Yu, "A wavelet multireolution and neural network system for BCG signal analysis”", IEEE TECON-Digital signal processing Applications, pp.491~495 (1996)
- Y-J Chee, "“Air mattress sensor system with balancing tube for unconstrained measurement of respiration and heart beat movements”", Physiol. Meas., 26(4), pp.413~422 (2005)
- M. Brink, "Contact-free measurement of heart rate, respiration rate, and body movements during sleep", Behavior Research Methods, pp.511~521 (2006)
- Akhbardeh, "The heart disease diagnosing system based on force sensitive chair's measurement, biorthogonal wavelets and neural networks", IEEE, 2005, 676~681
- Metin Akay, "Wavelet in biomedical engineering", Anals of Biomedical Engineering, 23(5), pp.531~542 (1995)
- S. E. Dobbs, "QRS detection by template matching using realtime correlation on a microcomputer", J. Clinic. Eng.,, 9(3), pp.197~212 (1984)
- 이대석, "QRS검출에 의한 ECG분석 기능을 갖춘 무선센서노드를 활용한 u-헬스케어 시스템", 센서학회지, 16(5), pp.361~368 (2007), 한국센서학회
- 조정현, "소형화 및 저전력소모를 구현한 실시간 생체신호 측정기 개발", 센서학회지, 15(5), pp.334~340 (2006), 한국센서학회