Abstract

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Title:: Continuous blood pressure measurement based on USB-4221 data acquisition card

Author(s):: LIN Dongmei1; 2; 3; ZHANG Yuru1; 2; 3; CHEN Xiaolei1; 2; 3; YANG Fulong1; 2; 3; WANG Jingyang1; 1. School of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China 2. Key Laboratory of Gansu Advanced Control for Industrial Processes, Lanzhou 730050, China 3. National Demonstration Center for Experimental Electrical and Control Engineering Education, Lanzhou University of Technology, Lanzhou 730050, China

Keywords:: Keywords: continuous blood pressure measurement electrocardiogram signal pulse signal synchronous acquisition

Abstract:: Abstract: A continuous blood pressure measurement system based on USB-4221 data acquisition card is designed to solve the problem of high dispersion degree of measurement results in the existing continuous noninvasive blood pressure measurement system. Electrocardiogram (ECG)-pulse signals are obtained simultaneously by AD8232 ECG sensor and photoelectric finger pulse sensor, and then the corresponding hardware conditioning circuits are designed. The pulse transit time is calculated using the ECG-pulse-blood pressure signals in MIMIC database, and then is analyzed by regression analysis, thereby constructing a blood pressure measurement model. Meanwhile, GUI, a graphical visualization tool, is used to design the user platform. The relevant data of several volunteers are collected by the system. The comparison between the measured blood pressure and that obtained by OMRON electronic blood pressure meter HEM-8713 showed that the measurement error was within the range of ±5 mmHg, which reached the requirement for average error in AAMI standard.