基于单片机的输液监控系统设计

中文题目：基于单片机的输液监控系统设计

外文题目：DESIGN OF INFUSION MONITORING SYSTEM BASED ON SINGLE

CHIP

毕业设计（论文）共 69 页（其中：外文文献及译文23页） 图纸共1张

完成日期 2013年6月 答辩日期 2013年6月

摘要

输液是医院常用的治疗手段，传统输液过程中存在着输液速度不精确、需要人工监护等弊端。本文的目的就是设计一种输液监控系统以解决此问题。

本文设计的输液监控系统，实现了对输液速度的检测与控制，实现了对储液瓶中液面体积的检测报警，并且动态显示输液速度。使用者可以通过PC设置输液速度，系统将自动对输液速度进行控制。此外系统还实现了多机通信， 即一个主站控制多个从站和主从机之间的数据传输。当输液结束或输液速度发生异常时，从站使用发光二极管和蜂鸣器进行报警，并将报警信号通过串行口传送至主站，主站通过监控软件和蜂鸣器实现声光报警。在整体方案设计中，在保证设计系统能达到的使用要求的精度和稳定度的前提下，考虑到系统的轻便性、实用性、可靠性，对电路系统进行了优化。

本设计基本完成了预想功能，并指明了以后的研究方向和工作重点。 关键词：单片机；PID；步进电机；CAN总线；PC

I

Abstract

Transfusion commonly used as treatment in hospital，but there were some problems，such as inaccurate，need transfusion of artificial guardianship，etc．The goal is to design a transfusion monitoring system in order to solve those problems．

The infusion monitoring system design by this paper,actualize the infusion rate of test，the control of reservoir fluid bottle volume detection alarm and dynamic display of transfusion speed．Users can through the PC to control transfusion speed.Besides the system also actualize multi-machine communication，that is，a master station to control multiple machines from a station and the master．slave data transmission between．When the infusion end or infusion speed abnormal，slave light—emitting diodes and buzzer to alarm，and will alarm signals through serial transmission to the master，stood by monitoring software realization and buzzer sound-light alarm．

In the overall program design,in ensuring the use of design systems to achieve the required accuracy and stability of the premise，taking into account the system’s portability，practicality，reliability，electrical systems were optimized．

Finally,the infusion monitoring system design by this paper，and point out future research directions and priorities．

Keywords：single chip；PID；Stepper Motor；Can Bus；PC

II

目录

前言 ........................................................................................................................... 2 1 概述 ....................................................................................................................... 2 1.1 本设计研究的现状 ............................................................................................ 2 1.2 本设计研究的意义 ............................................................................................ 3 1.3 本设计主要工作内容 ........................................................................................ 4 2 输液监控系统总体方案 ....................................................................................... 5 2.1 系统需求分析 .................................................................................................... 5 2.2 系统方案论证与比较 ........................................................................................ 5 2.2.1 控制方案比较 ................................................................................................. 5 2.2.2 点滴检测方案 ................................................................................................. 6 2.2.3 剩余液体检测方案 ......................................................................................... 6 2.2.4速度控制方案 .................................................................................................. 7 2.2.5电机选择及控制方案 ...................................................................................... 7 2.2.6主从机通信方案 .............................................................................................. 8 2.3 系统总体框图 .................................................................................................. 10 2.4 小结 .................................................................................................................. 11 3 系统从站的硬件设计 ......................................................................................... 12 3.1从站系统框图与核心部分电路图 ................................................................... 12 3.2从站系统各单元设计 ....................................................................................... 13 3.2.1点滴信号检测单元 ........................................................................................ 13 3.2.2键盘及显示单元 ............................................................................................ 16 3.2.3电源单元 ........................................................................................................ 18 3.2.4声光报警单元 ................................................................................................ 19

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