Development of vital signs monitoring system using wireless technologies

• Main Authors: Che-Hsi Lee, 李哲熙
• Other Authors: Yeh-Liang Hsu
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/96763440181757290123

碩士 === 元智大學 === 機械工程學系 === 97 === In this study, we use Bluetooth technology and 3.5G to develop a mobile vital signs monitoring system, in which user’s blood oxygen, pulse, blood pressure, ECG, and personal photo can be monitored in real-time. Nonin 4100 pulse oximeter, O-star 2.4G blood pressure device, and Alive ECG device are integrated into a notebook computer using Bluetooth interface. Vital signs are transmitted to specific monitoring site and U-care database through HTTP using 3.5G mobile network. ECG signals may be lost during transmission because of instability of 3.5G mobile network. We developed a decentralized transmission structure in which 30-second ECG signals are stored in files locally and then transmitted to the remote host by HTTP request. To evaluate this system, 7 elderly users tested the system in real application scenario. The results showed that the transmission of vital signs were stable. However, blood pressure measurement often failed because of various external factors.