基于示波法的电子血压计系统设计.pdf

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基于示波法的电子血压计系统设计
刘坚强1, 王永才2
( 1. 东北大学信息科学与工程学院, 沈阳 110819; 2. 青岛理工大学琴岛学院)
摘要: 电子血压计克服了水银血压计操作专业性强、不易携带等缺点, 呈现出家用化的趋势。针对传统单片机设计方案
电路设计复杂、测量精度不高、稳定性不好等缺点, 给出了一种采用 LM3S1138 芯片作为主控制器、自带信号运放和信号
调理功能的压力传感器 MPXV5050GP 作为信号采集器, 基于示波法测量血压的血压计设计方案。实验表明, 该血压计
测量速度快, 稳定性高, 测试结果基本与水银血压计一致, 具有较高实用价值。
关键词: 示波法; 血压计; 收缩压; 舒张压; LM3S1138
中图分类号: T P311 文献标识码: B
Blood Pressure Meter Based on Oscillometer
Liu Jianqiang1 , Wang Yongcai2
( 1. College of Information Science and Engineerng, Northeastern U niversity, Shenyang 110819, China;
2. Qingdao Technological University Qindao College)
Abstract: T he electronic sphygmomanometer overcame t he ings of mercury sphygmomanometer such as specialized operation,
not easy to carry and so on, presenting a home use tendency. In view of the disadvant ages of tradit ional MCU designs that the circuit is
complex, the accuracy and st ability performance is poor, this paper put forw ard a design method based on oscillometer method, using
LM3S1138 as the main controller, pressure-sensor M PXV5050GP w ith signal processing ability as signal collecting equipment. Exper-i
mental results indicate that the the measuring speed of the sphygmomanometer is fast, the device is st able, and t hat the result is similar
to that of the Riva-i sphygmomanometer, showing value in practical use.
Key words: oscillometer m et hod; sphy