The Study of PVDF Piezoelectric-film Finger-cuff Electronic Blood Pressure Monitor
Qiao Yu-si · 2013
This essay introduces a new electronic blood pressure monitor-the finger-cuff electronic blood pressure monitor of the PVDF piezoelectric film.Basing on the fact that the pulse of fingers can be used for measuring the human blood pressure,its basic principles and usage are presented.Meanwhile it shows the working principle of PVDF piezoelectric sensor with the static,dynamic characteristics of PVDF piezoelectric film.By combining signal processing circuit and PVDF piezoelectric sensor,the finger blood pressure can be changed into electrical signals.Through the detecting circuit,blood pressure value will be obtained directly.This electronic blood pressure monitor take full advantage of the piezoelectric effect of PVDF film made sensor,blood pressure measurement error is smaller,with gently portable and simple measure methods.It can provide a reference for the clinical medicine detection and home preventive care.