31-基于CAN总线的输液自动报警系统-杨隆俊.doc
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第七届“挑战杯”大学生课外学术科技作品竞赛
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□ 自然科学类学术论文
□ 哲学社会科学类社会调查报告和学术论文
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( 科技发明制作B类
二零一四年十二月
基于CAN总线的输液自动报警系统
摘要
设计一种低功耗、无人陪护输液监控器系统来提高输液效率,降低医疗事故发生的概率。
系统将采用AT89C51单片机作为从站核心,用CAN总线连接PC机与单片机构成优先监控系统,并且实现主机对从机的直接控制。该系统实现了对液滴流速的监测,并动态显示相关信息。系统将自动的完成检测、传输等一系列工作,当输液异常或输液即将结束时,液滴速度监控反映异常状况,报警信号传送至主站,主站则会通过监控软件和蜂鸣器实现声光报警,等待护士处理后消除报警信号。该系统误判率低、抗干扰性强、体积小,性价比高,便于推广应用。
关键词:单片机 CAN总线 PC
Abstract
A design?of?low?power?consumption,?no?one?accompanying?infusion?monitor?system?to
improve?the?efficiency?of?transfusion and?reduce?the?probability?of?medical?negligence.?
The?system?will?use?the?AT89C51 single chip?as?the?core?from?the?station,?constitute?priority?
monitoring?system using?CAN?bus?to?connect?PC?with?single?chip?microcomputer,?and?achieve??
the?direct?control?of?the master to the slave.?The?system realizes?the?monitoring?of?the?droplet velocity and?dynamic?display?of?relevant?information.?It will?automatically?complete?the?detection,
transmission?and?a?series?of?work. When the?transfusion?is?abnormal?or will be?finished,the?sensor
outputs?non-cycle?signal. Liquid?drop?speed?monitoring?reflects ?the?abnormal?situation,??sends?
out?the?alarm?signal?and?transmits?it?to?the?master?station. The main?station?will?send sound and
light?alarm?through?the?monitoring?software?and?the?buzzer. Then?the?nurse at the?master station will check?the infusion?corresponding with the alarm before getting rid of it.The?system has low
misjudgment?rate,?strong?anti-interference,?small?volume,?high?performance-to-price?ratio and easy popularization?and?application.?
Keywords: Singlechip CAN PC
目录
引言
系统监控报警系统的选择与设计
1.1点滴检测方案选择
1.1.1常用的点滴检测方案比较
1.1.2红外光电感应器检测
1.1.3设计应用
1.2声光报警单元
1.3 信号整形单元
系统从站功能的软硬件设计
2.1从机工作过程总览
2.1.1从机工作原理描述
2.2从机的系统设计与电路搭建
2.2.1从机主控模块设计
2.2.2液滴速度测量模块的设计
2.2.3声光报警器模块设计
2.2.4显示电路模块设计
2.2.5键盘电路模块
通信电路硬件设计及工作原理
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