《单片机的脉搏测量仪的设计开题分析方案6.pdf》由会员分享，可在线阅读，更多相关《单片机的脉搏测量仪的设计开题分析方案6.pdf（14页珍藏版）》请在taowenge.com淘文阁网|工程机械CAD图纸|机械工程制图|CAD装配图下载|SolidWorks_CaTia_CAD_UG_PROE_设计图分享下载上搜索。
1、1/14 毕业设计 论文）材料之二开题报告题目：基于单片机的脉搏测量仪的设计课 题 类 型：设计错误!实验研究论文学 生 姓 名：联系扣扣：2825772782学号：专 业 班 级：学院：电气工程学院指 导 教 师：开 题 时 间 2018年 3 月 11 日2018 年 3 月 11 日2/14 开题报告内容与要求一、毕业设计 论文）内容及研究意义价值）随着科技发展的不断提高，生命科学和信息科学的结合越来越紧密，出现了各种新颖的脉搏测量仪器，特别是电子脉搏仪的出现，使脉搏测量变得非常方便。脉诊在我国已具有 2600多年临床实践，是我国传统中医的精髓，但祖国传统医学采用“望、闻、问、切”的手段
2、进行病情诊断，受人为的影响因素较大，测量精度不高。科技的创新，脉搏测试不再局限于传统的人工测试法或听诊器测试法，脉搏测量可利用电子仪器测量出精度更就的数据。人体脉搏信号中包含丰富的生理信息，也逐渐引起了临床医生的很大兴趣，达到了方便、快捷、准确的测量脉搏的目的。随着电子测量技术的迅速发展，现代电子测量仪器以极快的速度向数字化、自动化的方向发展。制成的脉搏测量仪器性能良好，结构简单，有较好的应用和推广价值。脉搏测量仪的设计，必须是通过采集人体脉搏变化引起的一些生物信号，然后把生物信号转化为物理信号，使得这些变化的物理信号能够表达人体的脉搏变化，最后要得出每分钟的脉搏次数，就需要通过相应的硬件电路
3、及芯片来处理物理变化并存储脉搏次数。在硬件设计中一般的物理信号就是电压变化。本系统的组成包括传感器、信号处理、单片机电路、显示电路、键盘输入等部分。联系扣扣：2825772782 二、毕业设计 论文）研究现状和发展趋势文献综述）随着科学技术的发展，脉搏测量技术也越来越先进，对脉搏的测量精度也越来越高，国内外先后研制了不同类型的脉搏测量仪，脉搏测试不再局限于传统的人工测试法或听诊器测试法，脉搏测量可利用电子仪器测量出精度更就的数据。人体脉搏信号中包含丰富的生理信息，也逐渐引起了临床医生的很大兴趣，达到了方便、快捷、准确在测量脉搏的目的。随着电子测量技术的迅速发展，现代电子测量仪器以极快的速度向数
4、字化、自动化的方向发展。制成的脉搏测量仪器性能良好，结构简单，有较好的应用和推广价值。而其中关键是对脉搏传感器的研究。起初用于体育测量的脉搏测试集中在对接触式传感器的研究，利用此类传感器所研制的指脉、耳脉等测量仪各有其优缺点。指脉测量比较方便、简单，但因为手指上的汗腺较多，指夹常年使用，污染可能会使测量灵敏度下降：耳脉测量比较干净，传感器使用环境污染少，容易维护。但因耳脉较弱，尤其是当季节变化时，所测信号受环境温度影响明显，造成测量结文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文
5、档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O
6、1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文
7、档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O
8、1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文
9、档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O
10、1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文
11、档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C93/14 果不准确。过去在医院临床监护和日常中老年保健中出现的日常监护仪器，如便携式电子血压计，可以完成脉搏的测量,但是这种便携式电子血压计利用微型气泵加压橡胶气囊，每次测量都需要一个加压和减压的过程，存在体积庞大、加减压过程会有不适、脉搏检测的精确度低等缺点。脉搏测量仪的发展主要向以下几个趋势发展：1）自动测量脉搏并且对所得到的脉搏进行自动分析。目前很多脉搏测量仪都具有检测血氧等其他的功能，但是对这些信号的分析和诊断还需要一些有经验的医生观察，进行分析后才能确认结果，浪费大量的人力，且由人为引入的误差较大。因此，未
12、来脉搏自动检测的内容将更加详细，自动分析诊断功能也更强大。2）数字化技术等先进技术的应用。随着数字科学技术的发展，脉搏测量仪集成度将更高，更便于携带。数字信号处理的运用将使干扰更小，测量更为准确。、强度(波幅、速率(波速和节律(周期等方面的综合信息，在很大程度上反映出人体心血管系统中许多生理病理的血流特征,因此对脉搏波采集和处理具有很高的医学价值和应用前景。但人体的生物信号多属于强噪声背景下的低频的弱信号,脉搏波信号更是低频微弱的非电生理信号,因此必需经过放大和后级滤波以满足采集的要求。文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8
13、G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4
14、M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8
15、G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4
16、M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8
17、G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4
18、M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8
19、G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C95/14 三、毕业设计 论文）研究方案及工作计划含工作重点与难点及拟采用的途径）本设计采用单片机AT89C51为控制核心，实现脉搏测量仪的基本测量功能。系统硬件框图如下图1所示：图 1 脉搏测量仪硬件框图本设计的难点在软件编码与调试这一部分，软件这部分用C 语言编写，C 语言编写比较简单，而且看起来脉络清晰，明白，易懂。并且调试、修改起来也比较方便。编写时各个模块可以独立编写，各个模块用一个函数表示，需要时只需调用即可，最后再将各个模块联系起来。当然，各个模块程序
20、的编写还是相当不容易的，需要多查阅资料与学习。重点在硬件设计，硬件设计主要就是各个模块的设计，其关键在于仪器选型和电路设计，如：显示电路用LED 显示，键盘主要用于设定脉搏波速上下限，不在此范围，则就报警。这部分也需多查阅资料，多多请教别人，多思考。脉搏传感器信号放大与整形电路报警电路单片机AT89C51 显示电路键盘输入文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 H
21、Z5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3
22、C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 H
23、Z5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3
24、C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 H
25、Z5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3
26、C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C96/14 工作计划起止日期日/月）周
27、次内容进程备注2.25-3.3 1 熟悉毕业论文的题目，查阅相关的资料3.4-3.102 构思设计模块，撰写开题报告3.11-3.17 3 理清思路，提出论文设计方案3.18-3.244 论证方案3.25-3.315 硬件设计 各模块设计）4.1-4.76 4.8-4.147 4.15-4.218 4.22-4.289 软件编码与调试4.29-5.510 5.6-5.1211 5.13-5.1912 撰写论文5.20-5.2613 5.27-6.214 完成初稿6.3-6.915 修改定稿，送审6.10-6.1616 再修改并准备答辩6.17-6.2317 答辩6.24-6.3018 文档编码
28、:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9
29、V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码
30、:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9
31、V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码
32、:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9
33、V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码
34、:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C97/14 四、主要参考文献 不少于 10 篇，期刊类文献不少于7 篇，应有一定数量的外文文献，至少附一篇引用的外文文献 is ameasure of the elasticity(or stiffnessof peripheral arterial blood vessels.The pulse referred to here will be thepressur
35、e pulse as opposed to the flow pulse measured by ultrasound Doppler.The pressure pulse velocity varies over the range from about 12 m s-1 to15 m s-1 in stiff pe ripheral arteries,whereas in normal arteries it has a velocityin the range of 7 to 9 m s-1.The aimof this projectwas the development of a f
36、ast and easy to use systemfor the determination of peripheral arterial pulse wave velocity.The principleof the PWV measurement is based on simultaneous measurement of two pulsewaves at two different positions,such as the radial artery at the wrist andthe brachial artery just above the elbow.By deter
37、mining the pulse transit timebetween these points and the distance measured between the two locations,pulse wave velocity may then be calculated.The pressure pulse detection isdone by using two piezoelectric sensors which generate a measurable voltageat the output contacts if they are mechanically d
38、eformed.The deformationproduced voltage is first amplified and filtered and then digitalized with a dataacquisition card.The analysis of the data obtained from the sensors includesa filtering process,the calculation of the PWV with three different methods foot-to-foot,cross-correlation and peak-to-p
39、eak and the determination of thearterial pulse rate.The sensor technique used in this work involves the piezoelectric effect in polyvinylidene fluoride(PVDF,which produces an output voltage in response to mechanical pressure on the material.Three methods of APWV determination are used:foot-to-foot A
40、PWV。peak-to-peak APWV and cross-correlation APWV.The FFAPWV and CCAPWV methods are less sensitive to pressure wave reflections at bifurcations,etc in the arterial tree,than the PPAPWV method.Mean values and standard deviations were computed for all three methods and compared.Foot-to-foot APWV(FFAPWV
41、.This is based on the velocity of the foot,orleading edge,of the pressure pulse wave.The arrival times of the foot of the pulse wave attwopositions along the artery are recorded.If t is the difference in arrival times and s thedistance between the two recording positions(proximal and distal,the FFAP
42、WV is simply FFAPWV=s/t.文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1
43、X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7
44、 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1
45、X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7
46、 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1
47、X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7
48、 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C9文档编码:CO6Z3L8K8G7 HZ5O1R9V6T8 ZL5K4M1X3C99/14 Peak-to-peak APWV(PPAPWV.This is completely analogous to the FFAPWVexcept that the points of observation are the two(proximal and distal peaks of the p
49、ulse waveand PPAPWV=s/t.Apparent pulse wave velocity(AAPWV.The pressure wave may be represented as a Fourier series,P(t=P0+Pn sin(nt+n WhereP0 is the mean fluid pressure,n is the harmonic number,Pn is the amplitude of the nthharmonic and n is the phase angle of the nth harmonic.The spatial rate of c
50、hange of the phase for one harmonic based on two simultaneouspressure measurements separated by a distance _s along an artery,is related to the apparentarterial pulse wave velocity(AAPWV by the following equation,AAPWVn=(sn(f(360o/(x1-x2 WhereAAPWVn is the apparent pulse wave velocity for the nth ha