|Author's Email Address
||This thesis had been viewed 5562 times. Download 8 times.|
||Mechanical and Electro-Mechanical Engineering|
|Type of Document
||Design of a Wearable Blood Pressure Continuous Monitoring Device|
|Date of Defense
||Continuous blood pressure monitor
Pulse wave signal
||With the needs of long-term cares and personal health managements are increasing, the physiological monitoring system are urgent to be established. In physiological signals, the blood pressure is one of the most important signals. Both the mercury and electronic sphygmomanometers adopt inflated cuffs to oppress arteries for blood pressure measurements. The user who uses the cuff chronically or frequently suffers discomfort. Therefore, the cuff-type sphygmomanometers are not suitable for continuous blood pressure measurements.|
This study used a photonthmography (PPG) sensor and a piezoelectric strain sensor to measure the pulse signals from the radial artery and the forefinger tip. The length of the pulse transit time between the two signals is used to estimate the blood pressure. In this study, a push load distribution sensor composed of tactile sensors and pressure sensors has been developed. It provides the user’s skin boundary conditions that enhance the repeatability of wearing conditions to eliminate the signal errors caused by the different wearing conditions.
In blood pressure measurement experiments performed with 10 subjects aged between 20 and 25 years, the estimation mean errors against a validated cuff-type blood pressure monitor were 2.90% (standard deviation of 22%) and -2.74% (standard deviation of 17%) at rest for systolic and diastolic pressures respectively. The estimation error will be reduced once the push load difference is controlled under 1 %.
||Yen,Chen-Wen - chair|
Lu,Wen-Hsien - co-chair
Wang,Yu-Jen - advisor
Indicate in-campus at 3 year and off-campus access at 3 year.|
|Date of Submission