Abstract
This paper opens new insights into short-duration photoplethysmography (PPG) in dynamic condition when opening a refrigerator. Light-emitting diodes illuminate fingers in the door handle and 512 PPG signals are recorded in parallel with the acceleration information, which indicates the moment of the door opening. Eight healthy volunteers participated in the experiments with opening the refrigerator’s door. A Critikon Dinamap Pro 300 was used to record a referential level of their blood oxygen simultaneously. We derived novel algorithms for assessing blood oxygenation based on a very short transient segment of PPGs in the very moment of the refrigerator opening. The approach does not need either heartbeat detection or calibration. A comparison between our estimates and referential data yields the mean absolute error of 1.23 %.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Kamat, V.: Pulse oximetry. Indian J. Anaesth. 46(4), 261–268 (2002)
Zislin, B.D., Chistyako, A.V.: The history of oximetry. Biomed. Eng. 40(1), 53–56 (2006)
Pirš, C., Cigale, B., Zazula, D.: A feasibility study of heartbeat detections from photoplethysmograms with fingers compressed. In: Proceeding of the 5th WSEAS International Conference on Sensors and Signals, pp. 47–52 (2012)
Spigulis, J., Erts, R., Rubins, U.: Micro-circulation of skin blood: optical monitoring by advanced photoplethysmography techniques. In: Proceeding of the SPIE, vol. 5119, pp. 219–225 (2003)
Choi, Y., Zhang, Q., Ko, S.: Noninvasive cuffless blood pressure estimation using pulse transit time and Hilbert-Huang transform. Comput. Electr. Eng. 39, 103–111 (2013)
McCombine, D.B., Reisner, A.T., Asada, H.H.: Motion based adaptive calibration of pulse transit time measurements to arterial blood pressure for an autonomous, wearable blood pressure monitor. In: Proc. of the 30th Annual International IEEE EMBS Conference, pp. 989–992 (2008)
Cigale, B., Zazula, D., Đonlagić, D., Pirš, C., Benkič, K.: Računalniška naprava in postopek za nemoteče merjenje parametrov funkcionalnega zdravja. SI 24037 (A), 2013–10-30, Ljubljana, Urad Republike Slovenije za intelektualno lastnino (2013)
Zazula, D., Pirš, C., Benkič, K., Đonlagić, D., Cigale, B.: Short-term photoplethysmography embedded in household appliances. In: The 6th European Conference of the International Federation for Medical and Biological Engineering, MBEC 2014, pp. 922–925. Springer, Berlin (2014)
Teng, X.-F., Zhang, T.: Theoretical study on the effect of sensor contact force on pulse transit time. IEEE Trans. Biomed. Eng. 54(8), 1490–1498 (2007)
Rhee, S.: Design and analysis of artifact-resistive finger photoplethysmographic sensors for vital sign monitoring. Ph.D. Thesis, MIT, Boston (2000)
Acknowledgement
Authors acknowledge a financial support of the Slovenian Ministry of Education, Science, and Sport and the European Regional Development Funds for the Biomedical Engineering Competence Centre. We are grateful to partners from Gorenje Group, Velenje, Slovenia, who designed the photoplethysmograph housing and placement in the refrigerator’s door frame.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2016 Springer International Publishing Switzerland
About this paper
Cite this paper
Zazula, D., Srkoč, S., Cigale, B. (2016). Unobtrusive Sensing of Human Vital Functions by a Sensory Unit in the Refrigerator Door Handle. In: Chen, YW., Torro, C., Tanaka, S., Howlett, R., C. Jain, L. (eds) Innovation in Medicine and Healthcare 2015. Smart Innovation, Systems and Technologies, vol 45. Springer, Cham. https://doi.org/10.1007/978-3-319-23024-5_25
Download citation
DOI: https://doi.org/10.1007/978-3-319-23024-5_25
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-23023-8
Online ISBN: 978-3-319-23024-5
eBook Packages: EngineeringEngineering (R0)