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摘要：随着无线技术以及科学技术的发展，医院病房呼叫有了系统的支撑，使得医院对病人的照顾得到了全方位的保障。本设计是以AT89C51单片机为硬件支持，使用了C语言以及矩阵键盘技术、LCD液晶显示电路技术、Proteus仿真技术等进行开发设计的。使得病人与医护人员可以在远距离进行沟通。在这个设计中每个病房的床头都有一个按钮，提供病人使用，病人如需帮助只要按下按键，此时医护站的显示屏上会显示相应病床号，并且声音报警。医护人员得知后按下响应键即可取消当前呼叫。本设计从硬件和Proteus软件仿真方面阐述了该控制系统的设计方法，并经过调试和运行使该系统达到预期目标。通过对病区的数据采集，实现医院医疗人员值班室与病室之间的通信呼叫联系，是单片机技术在临床上的大胆应用，具有反应快、功能齐全、实用性强的特点。68636
毕业论文关键词：单片机，呼叫系统，矩阵键盘，LCD，电子电路
Abstract:With the development of the wireless technology and science technology, the hospital ward call have had a system support,it makes the hospital receives a full range of security to the patient's care.This design is based on AT89C51 microcontrollers as the hardware support and uses the C language,matrix keyboard,LCD liquid crystal display circuit,Proteus simulation technology to develop and design.It makes the patient and medical staff can communicate over a long distance.In this design every room's head of the bed has a button, it provides patients to use,if patients need help they just press the button, the medical station screen will display the corresponding sickbed and have voice alarm.Then,medical staff will know and they can press the button to cancel the current response after the call. This design expounds design method of the control system from the aspects of Proteus simulation software and hardware,and also it reachs the expected aim after debugging and running the system.Through the data acquisition of ward,it realizes the communication between the hospital medical personnel duty room and ward call contact,it is a big try of the single-chip microcomputer technology in the clinical applications of bold,and single-chip microcomputer technology has the characteristics of fast response,completed function and strong practicability.
Keywords:Microcontrollers,Call Systems, Matrix Keyboard, LCD,Electronic Circuit
目录
1 绪论 3
1.1 本文研究背景与意义 3
1.2 病床呼叫系统的发展概况 3
1.3 本设计的研究内容及安排 4
2 基于单片机的病床呼叫系统总体方案设计 4
2.1 病床呼叫系统的功能要求 4
2.2 电路总结构设计 5
2.3 单片机最小系统 5
2.4 键盘扫描电路结构 6
2.5 LCD液晶显示电路结构 7
2.6 声音报警电路结构 8
3 病床呼叫系统硬件电路设计 8
3.1 总体硬件电路图 8
3.2 键盘扫描电路 10
3.3 LCD液晶显示电路 10
3.4 声音报警电路 11
3.5 时钟复位电路 11
4 病床呼叫系统程序设计