1、摘 要 I 摘 要 本文介绍了一种由 AT89C51 单片机构成的医院输液监控系统。对系统如何实现自 动检测、自动报警等功能也做了详细的分析与研究。本系统利用光电传感器采集点滴的 有无，AT89C51 作为中央处理器进行信号分析与处理，结合输液传感器、小型步进电 动机、LCM103 液晶显示、键盘等组成的智能监控输液系统，实现了输液过程的自动监 控。 信号传感方式采用了发光二极管和三极管。 自行设计出适用于多种输液滴速监控器， 给出了各个功能模块的逻辑框图。然后，就此系统的核心传感器的设计进行了详细的介 绍，系统地分析了传感器的物理特性与信号检测的关系，并结合实际需要设计出满足后 期信号处理的
2、适用于多种输液液体的传感器。当点滴的速度低于或高于设定值时，单片 机发出控制信号，进行相应调节。当有人按下报警按钮时，与单片机相连 I/O 口输出高 电平，也触发蜂鸣器报警，提醒医护人员和输液病人采取相应措施，避免事故发生。整 个装置的线路简单，制作方便，经济实用。 关键词：输液滴速；传感器；信号处理；液位检测等 Abstract II Abstract This article introduced one kind the hospital infusion supervisory system which constitutes by at89C51 monolithic integra
3、ted circuit.Realized functions and so on automatic detection, auto-alarm how to the system has also made the detailed analysis and the research.This system use electro-optical sensor gathering intravenous drip whether there is, did AT89C51 take the central processor clear signal analysis and process
4、ing, the union infusion sensor, small step-by-steps composition and so on electric motor, LCM103 liquid crystal display, keyboard intelligent monitoring infusion systems, has realized the infusion process automatic monitoring.The signal sensing way has used the light emitter diode and the triode.Independently designs is suitable many kinds of for loses the bubble fast monitor, has given each function module functional block diagram.Then, the system core sensor design has carried on the detailed
