毕业论文_（血压计).doc

本人声明 我声明，本论文及其研究工作是由本人在导师指导下独立完成的，在完成论文时所利用的一切资料均已在参考文献中列出。 作者：刘桂良 签字： 时间：2008年6月基于S12 单片机的血压计的实现 学 生：刘 桂 良 指导老师：张军香 董韶鹏 摘 要 人体血压是人重要的生命参数之一，目前人体血压的测量多采用间接测量，测量方法主要有示波法、柯氏音法等。其中示波法因其测量方便、抗干扰能力强等优点被当前主流的自动电子血压计所采用。本文主要研究使用S12单片机实现人体血压的测量，测量方法为示波法。 本论文研究的主要内容有：对人体血压的测量系统进行详细的分析，对血压测量实验系统进行改进，统一实验箱与单片机的接口；编写单片机程序，完成对人体血压测量的控制与血压值的计算；实现单片机与上位机的通信，上位机软件对血压数据进行图形显示，编写软件计算血压值。 同时，本论文开发的实验系统为压力测量与算法的学生实验提供了一个良好的实验平台。在血压测量算法的研究和实现测量系统的基础上，设计实验，编写实验指导书，学生根据实验指导书，完成对人体血压的测量，学习并掌握Freescale单片机的原理及应用方法，培养学生的学习和动手的能力。 关键：单片机，示波法，LabVIEWBlood Pressure Monitor Based on S12 MCU Author: Liu Guiliang Tutor: Zhang Junxiang, Dong Shaopeng Abstract Human blood pressure is one of persons most important life parameters, its measuring technique varies and mainly indirectly, among which Oscillometric and Keshi-Law included. This article mainly deals with the oscillometric method which is generally used in the automatic blood pressure monitor designs for its convenience and strong anti-disturbance capacity. The paper carries on the detailed analysis to the human body blood pressures measurement system, the improvement to the original experiment system and the unified monolithic integrated circuit series experiments connection. It researches more on the control of the measurement system and the calculation of blood pressure. Also in this paper, a software is used to finish the communication between the measurement system and the computer on which the measure data is displayed graphically and the blood pressure is calculated too. The development of the S12 MCU blood pressure measurement system provides a nice experiments platform for students. Using the experiment guide book, students can accomplish the human blood pressure measurement, master the application method of the Freescale microcontrollers. The experiment can foster their ability to study and work. Key words: Microcontrollers, Oscillometric, LabVIEW 目 录 1绪论 1 1.1论文选题意义 1 1.2国内外研究现状分析 1 1.2.1血压及血压测量方法 1 1