摘要：肺活量是一项可以衡量肺扩张能力和肺容积的指标。肺活量通常用来作为衡量人的生长发育水准和体质情况的一项基本功能指标, 同时肺活量测量仪也是各个级别医院中肺科、胸部外科、呼吸内科等科的临床医师所必须具备的仪器。本文中介绍了一种肺活量测试仪的大体设计方法, 分各个部分描述了该肺活量测试仪各电路的设计, 并给出了相应的系统程序。该肺活量检测系统通过用 MSP430作为控制芯片, 并采用了 M PXV 7002dp压阻式压力传感器, 简化了设计电路; 该设计方案整体实物体积小, 耗电低, 操作起来较为方便。

关键词  单片机MSP430F449; 肺活量; 测试 ；时间 

毕业设计说明书外文摘要

Title       Design of Lung capacity tester 

Abstract：Vital capacity is a measure of lung expansion ability and the index of lung capacity. Lung capacity is usually used as a measure of growth level and the constitution is a basic function index, vital capacity measuring instrument is also every level hospitals in lung at the same time, the pision such as chest surgery, respiratory medicine clinician must have the instrument. This article introduces the general design method of a kind of vital capacity tester, points each part describes the lung capacity tester of the circuit design, and presents the corresponding program system. The lung capacity test system by using MSP430 as control chip, and adopted the M PXV 7002 dp piezoresistive pressure sensor, simplifies the design circuit; The overall design scheme of physical volume is small, low power consumption, more convenient to operate.

Keywords  Single chip microcomputer MSP430F449. Lung capacity; Test; time

目录

1  绪论 1

1.1设计背景及意义 1

1.2肺活量测量仪的相关研发进程 2

1.3设计的任务及要求 2

2  系统总体方案设计 4

2.1  系统总体框图 4

2.2  测量原理简介 4

3  肺活量测量仪的硬件设计 5

3.1  MSP430单片机电路设计 5

3.2  MPXV7002压阻式气压传感器模块 7

3.3  实时时钟电路 10

3.4  报警电路 13

3.5  液晶显示电路 13

3.6  按键输入电路 18

3.7  稳压电路 18

3.8  电源电路 20

4  肺活量测量仪的软件设计 21

4.1  软件设计任务 21

 4.2  软件设计工具 22

4.3  主程序 23

4.4  肺活量测量仪程序 25

4.5实时时钟程序 26

4.6 灯光报警程序 26

4.7  液晶显示程序 27

4.8  按键输入程序 27

5.系统调试 基于430单片机肺活量测量仪设计:http://www.chuibin.com/zidonghua/lunwen_206396.html