TY - GEN
T1 - A Clip-free Eyeglasses-based Wearable Monitoring Device for Measuring Photoplethysmograhic Signals
AU - Zheng, Yali
AU - Leung, Billy
AU - Sy, Stanley
AU - Zhang, Yuanting
AU - Poon, Carmen C.Y.
PY - 2012/8
Y1 - 2012/8
N2 - An eyeglasses-based device has been developed in this work to acquire photoplethysmogram (PPG) from the nose bridge. This device is aimed to provide wearable physiological monitoring without uncomfortable clips frequently used in PPG measurement from finger and ear. Switching control is applied on the LED and photo detector for power saving. An experiment involving postural change and treadmill jogging among 10 healthy young subjects was carried out to evaluate the performance of the device. Electrocardiogram (ECG) and PPG from finger, ear and nose were simultaneously recorded, from which heart rate (HR) and pulse transit time (PTT) were calculated. The results show that PPG measured from nose and ear are more resistant to motion than signal from finger during exercise. In addition, the difference between PTT measured from ear and nose indicates that local vasomotor activities may exist on ear and/or nose channel, and suggests that PPG from different sites should be used for cuff-less PTT-based BP estimation. We conclude that this wearable device has great potential to be used in the healthcare management in the future.
AB - An eyeglasses-based device has been developed in this work to acquire photoplethysmogram (PPG) from the nose bridge. This device is aimed to provide wearable physiological monitoring without uncomfortable clips frequently used in PPG measurement from finger and ear. Switching control is applied on the LED and photo detector for power saving. An experiment involving postural change and treadmill jogging among 10 healthy young subjects was carried out to evaluate the performance of the device. Electrocardiogram (ECG) and PPG from finger, ear and nose were simultaneously recorded, from which heart rate (HR) and pulse transit time (PTT) were calculated. The results show that PPG measured from nose and ear are more resistant to motion than signal from finger during exercise. In addition, the difference between PTT measured from ear and nose indicates that local vasomotor activities may exist on ear and/or nose channel, and suggests that PPG from different sites should be used for cuff-less PTT-based BP estimation. We conclude that this wearable device has great potential to be used in the healthcare management in the future.
UR - http://www.scopus.com/inward/record.url?scp=84870852294&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84870852294&origin=recordpage
U2 - 10.1109/EMBC.2012.6347121
DO - 10.1109/EMBC.2012.6347121
M3 - RGC 32 - Refereed conference paper (with host publication)
C2 - 23367056
SN - 9781424441198
T3 - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS
SP - 5022
EP - 5025
BT - 2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society
T2 - 34th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS 2012)
Y2 - 28 August 2012 through 1 September 2012
ER -