Aiming at the problems of complex structure,large size,unsuitable wearability,and restriction of patient move-ment in the existing continuous non-invasive blood pressure measurement equipment,a wearable device is de-signed to measure human blood pressure in real time.The electrocardiogram(ECG)-pulse wave signal is ob-tained synchronously through the hardware device,and a signal processing algorithm was designed to extract fea-ture points for subsequent blood pressure estimation.The electro-pulse-blood pressure signal of MIMIC data center is used to calculate the pulse wave transmission time and pre-ejection stage,and the linear regression analysis is carried out using the least squares method,and the blood pressure measurement model is constructed to realize the personalized blood pressure detection algorithm.The experimental results show that when using this technology to detect human blood pressure,the standard deviation of the error is within the range of±8 mmHg(1 mmHg≈ 133 Pa),and the average absolute error is less than 5 mmHg,which meets the requirements of the AAMI international sphygmomanometer accuracy evaluation standard.
关键词
无创血压测量/脉搏波传导时间/可穿戴/射血前期
Key words
non-invasive blood pressure measurement/pulse wave transmission time/wearable/pre-ejection period
维普
万方数据