2016年第35卷第6期
传感器与微系统(Transducer and Microsystem Technologies）
89
DOI:10.13873/J.10009787( 2016 )06008904
具有校准功能的医用型电子血压计
张晓丹，李东升，陈爱军，子航
（中国计量学院计量测试工程学院，浙江杭州310018）
摘要：针对传统电子血压计不具备压力检定和校准功能的缺点，研制具有校准功能的电子血压计，通过改进血压计的气路结构实现压力的检定和自校准。测量实验中，静压的最大示值误差为2.1mmHg，血压为120/80的收缩压和舒张压重复性分别为3.00mmHg和1.716mmHg，血压为110/75的收缩压和舒张压的重复性分别为3.8mmHg和1.716mmHg；校准实验中，校准后的静压最大示值误差为0.7mmHg，收缩压和舒张压的平均差为1mmHg和-1mmHg、标准差为2mmHg和1.47mmHg。结果表明：样机满足JG692
提高。
关键词：血压计校准；静态压力检定；幅度系数法；医用型电子血压计
中图分类号：TH789
文献标识码：A
文章编号：1000-9787(2016)06-0089-04
Medical electronicblood pressure meterwith
calibration function
ZHANG Xiao-dan, LI Dong-sheng, CHEN Ai-jun, YU Hang
( College of Metrology & Measurement Engineering,China Jiliang University,Hangzhou 310018,China ) Abstract: In view of shortcomings of traditional electric blood pressure meter that does not has functions of pressure verification and calibration, develop electric blood pressure meter with calibration function which can aa anssard poo o as ed see adg eaeeaas pe eaaa nsd aron experiment,the maximum error of static pressure is 2. 1 mmHg, repeatability of systolic pressure is 3. 0 mmHg, repeatability of diastolic pressure is 1. 716 mmHg when blood pressure is 120/80 ;repeatability of systolic pressure is 3. 8 mmHg and repeatability of diastolic pressure is 1. 716 mmHg when the blood pressure is 110/75. In calibration experiment,the maximum error of statie pressure after calibration is 0. 7 mmHg, mean difference of systolic pressure and diastolie pressure are 1mmHg and 1 mmHg, standard deviation of systolic pressure and diastolic pressure are 2 mmHg and 1. 47 mmHg- Results show that the prototype meets the requirements of JJG692-2010* verification regulation of non-invasive blood pressure meter' , the prototype after calibration can accurately measure static pressure and blood pressure,and the accuracy is improved.
Key words: blood pressure meter calibration; static pressure verification; amplitude coefficient method; medical electronic blood pressure meter
0引言
2010年发布的JJG692-2010%无创自动测量血压计检定规程》！),要求对电子血压计进行静压准确性和血压重复性的检定。目前的电子血压计均不具备压力校准及静压显示的功能，不能在血压计测量失准时对其进行修正和实现电子血压计静压检定的要求。针对上述向题，本文提出-种具有校准功能的医用电子血压计，可在血压计测量失准时对其进行修正，使其能重新准确测量血压，延长血压计的使用寿命。同时，具有静压显示、静压检定、短信通知、数
收稿日期：2015-09-21
据通信、历史查询等功能，具有较高的实用价值， 1系统工作原理
1.1血压测量原理
采用幅度系数法测量血压：袖带充气阻断动脉血流，因血液动力学作用，袖带压上重叠了与心搏同步的压力波动，即脉搏波，随着袖带压减小，脉搏波幅值呈现由小到大和由大到小的变化趋势，根据脉搏波振幅与袖带压之间的关系可估算血压。图1为幅度系数法血压测量原理2.3]。
图1中，A...是脉搏波信号上的最大值。脉搏波信号上，
*基金项目：浙江省仪器科学与技术重中之重学科学生开故实验项目(JL150517）