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基于示波法的电子血压计设计与实现

第32卷 第5期Vol.32 No.5

重庆理工大学学报(自然科学)Journal of Chongqing University of Technology (Natural Science )2018年5月

??????????????????????????????????????????????M ay 2018 收稿日期:2018-01-28

基金项目:国家自然科学基金资助项目(61601124,61571113)

作者简介:罗堪,男,博士,讲师,主要从事信号处理研究;通讯作者都可钦,男,主要从事信号处理研究,E-mail :

2517807111@https://www.wendangku.net/doc/0c7602873.html, 。doi :10.3969/j.issn.1674-8425(z ).2018.05.027

本文引用格式:罗堪,都可钦,林友华,等.基于示波法的电子血压计设计与实现[J ].重庆理工大学学报(自然科学),2018(5):177-182.Citation format :LUO Kan ,DU Keqin ,LIN Youhua ,et al.Design and Implementation of an Oscillography Based Electronic Blood Pressure M eter

[J ].Journal of Chongqing University of Technology (Natural Science ),2018(5):177-182.

基于示波法的电子血压计设计与实现

罗 堪,都可钦,林友华,李建兴

(福建工程学院信息科学与工程学院,福州 350100)

摘 要:针对传统电子血压计硬件电路复杂、易受外部因素和噪声影响、精度和一致性较差的缺点,设计并实现了一种基于示波法的电子血压计。该电子血压计的硬件由STM 32控制器配合少量的外部电路构成;信号处理主要由数字滤波器等软件实现;血压分析采用了两阶高斯拟合和变幅度系数法结合的计算模型。设计的样机在10名志愿者的血压测量实验中测得:收

缩压平均误差为2.

6mmHg ,标准差为2.2mmHg ,舒张压平均误差为2.0mmHg ,标准差为1.6mmHg ,

精度高于美国ANSI /AAM I SP10—1992血压测量标准。关 键 词:示波法;数字信号处理;电子血压计;STM 32

中图分类号:R318 文献标识码:A 文章编号:1674-8425(2018)05-0177-06

Design and Implementation of an Oscillography

Based Electronic Blood Pressure Meter

LUO Kan ,DU Keqin ,LIN Youhua ,LI Jianxing

(School of Information Science and Engineering ,

Fujian University of Technology ,Fuzhou 350100,China )

Abstract :Complex hardware and strong noisy are easily lead poor accuracy and low coherence in traditional blood pressure (BP )meter.To address such problems ,an electronic BP meter based on oscillography is proposed.The hardware consists of a STM 32microcontroller and few external circuits ,meanwhile ,digital signal processing ,such as digital filtering ;Blood pressure calculation and analysis are based on the two order Gauss fitting ,and variable coefficient method were used in the prototype.10volunteers were participated in the test.The average error and standard deviation of systolic blood pressure are 2.6mmHg and 2.2mmHg ,respectively ;and the average error and standard deviation of diastolic blood pressure are 2.0mmHg and 1.6mmHg ,respectively.The accuracy is significantly higher than the United States ANSI /AAM I SP10—1992blood pressure measurement standard.

Key words :oscillography ;digital signal processing ;electronic blood pressure meter ;STM 32

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