A LabVIEW based measure system for pulse wave transit time

Author

Zhang, J.M. ; Wei, P.F. ; Li, Y.

Author_Institution

Key Lab. for Biomed. Inf. & Health Eng., Chinese Acad. of Sci., Shenzhen

fYear

2008

fDate

30-31 May 2008

Firstpage

477

Lastpage

480

Abstract

Pulse wave transit time (PWTT) is used as a non-invasive and cuffless method for blood pressure estimation. In this paper, we design a system that can measure PWTT by monitoring ECG and pulse wave continuously. The system includes analog signal sampling in PCB, signal display and data processing in computer. We measure pulse wave by the photo-plethysmograph (PPG) device in finger which includes an infrared LED transmitting light, photodiode in OPT101 as detector, amplifier and filters. We measure ECG by the sensor on limb. We design amplifier, 0.01 Hz high pass filter, 75 Hz low pass filter, and 50 Hz notch filter. After filtering and amplification, ECG and PPG are sampled by MCU and then the data are transmitted to computer. LabVIEW is used to receive, display and process these data, and finally figure out the PWTT. Based on PWTT value, we coarsely calculate the SBP.

Keywords

blood pressure measurement; electrocardiography; medical signal processing; notch filters; ECG; LabVIEW; PCB; analog signal sampling; blood pressure; data processing; frequency 0.01 Hz; frequency 50 Hz; frequency 75 Hz; high pass filter; infrared LED transmitting light; low pass filter; notch filter; photodiode; photoplethysmograph; pulse wave transit time; signal display; Biomedical monitoring; Blood pressure; Computer displays; Computerized monitoring; Electrocardiography; Infrared detectors; Low pass filters; Pulse amplifiers; Pulse measurements; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Technology and Applications in Biomedicine, 2008. ITAB 2008. International Conference on

Conference_Location

Shenzhen

Print_ISBN

978-1-4244-2254-8

Electronic_ISBN

978-1-4244-2255-5

Type

conf

DOI

10.1109/ITAB.2008.4570599

Filename

4570599