PVDF压电薄膜指套式电子血压计的研究

本论文基于通过指脉搏可作为测量人体血压的依据,介绍了一种新型电子血压计—PVDF(聚偏氟乙烯)压电薄膜指套式电子血压计的基本原理和使用方法,由PVDF压电薄膜的静、动态特性理解薄膜式压电传感器的工作原理,并且将PVDF压电传感器与信号处理电路相结合,把手指的血压变为电信号,通过检测电路处理直接得到血压值。这种电子血压计充分利用了PVDF薄膜良好的压电效应制成传感器,使得血压的测量误差更小,具有轻轻便携,测量方法简单的优势,可以为临床医学检测和家居预防保健提供参考。

The Study of PVDF Piezoelectric-film Finger-cuff Electronic Blood Pressure Monitor

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.