摘要
作为诸多生理信号的一种,脉搏波所呈现出的形态、强度、速率和节律等方面的综合信息,能反映出人体心血管系统中许多生理病理的血流特征。该文介绍了一种低成本、便携式的脉搏自动检测系统。以STM32F103C8T6为控制器,采用PVDF压电薄膜传感器采集脉搏信号,电荷放大电路对PVDF变换的脉搏电荷信号进行放大,再经过放大电路、滤波电路和陷波电路等处理,由主控制器对脉搏信号进行采集,LCD实时显示脉搏信息,并将信息存储到SD卡中。
As a kind of physiological signals,the comprehensive information of the shape,intensity,rate and rhythm of the pulse wave can reflect the blood flow characteristics of many physiological and pathological diseases in the human cardiovascular system.This article describes a low-cost, portable automatic pulse detection system. Taking STM32F103C8T6 as the controller,the PVDF piezoelectric film sensor is used to collect the pulse signal,and the charge amplification circuit amplifies the PVDF-transformed pulse charge signal,and then passes through the amplification circuit,the filter circuit and the trap circuit,and the pulse signal is generated by the main controller.For acquisition,the LCD displays the pulse information in real time and stores the information in the SD card.
作者
林松华
王战庆
汪文海
贺发文
许荣谊
尤明辉
Lin Song-hua;Wang Zhan-qing;Wang Wen-hai;He Fa-wen;Xu Rong-yi;You Ming-hui(Xiamen Intretech Inc,Fujian Xiamen 361006)
出处
《电子质量》
2018年第10期24-27,共4页
Electronics Quality
