基于单片机的病床呼叫系统设计

基于单片机的病床呼叫系统设计

摘要

病房呼叫系统是传送临床信息的重要手段,可将病人的请求快速传送给值班医生或护士,它主要用于协助医院病员在病床上方便地呼叫医务人员，是提高医院和病室护理水平的必备设备之一。让患者需要服务时，只要按一下随身携带的呼叫器，信息立马就能传至护工处.避免没有看护人在时,病人急需服务却无法通知医生的情况.它要求及时、准确、可靠、简便可行。

本设计的呼叫系统由按键检测，数据处理，信息显示三部分组成。由C51单片机作为主要控制器，利用液晶显示器作为显示部分，使用3X8矩阵开关分别模拟医院病房与病床位数。病人按下按键时，C51立即获取病人的病房号和病床号，同时采集此时的时间并一起显示在液晶显示器上，当护士看到显示器上病人的信息，并按下清零键后，液晶显示器恢复到初始状态。本系统对键盘的检测采用中断的方式，能够提高系统的立即性和高效性。当同时有数个病床呼叫时，本系统还可以循环呼叫记录显示。

关键词：病房呼叫单片机中断液晶显示

Design of hospital bed call system based on single

chip microcomputer

Summary

Ward call system is an important means to transfer the clinical information, the patient's request can be quickly transmitted to the doctor or nurse on duty, it is mainly used to assist the hospital easily call the medical staff in a hospital bed, is one of the necessary equipment to improve the level of nursing and hospital ward. Let the patient need service, just click the thecarry pager information can spread to the workers. Immediately without caregivers when patients needed services cannot tell the doctor. It requires timely, accurate and reliable, simple and feasible. The design of the call system by the key detection, data processing, information display three parts. C51 microcontroller as the main controller, the use of liquid crystal display as the display part, the use of 3X8 matrix switch to simulate the hospital ward and hospital beds. When the press button is pressed, the C51 immediately gets the patient's ward number and the bed number, while the time is collected and displayed on the LCD monitor, when the nurse sees the patient's information and press the reset button, the LCD screen is returned to its initial state. This system can improve the immediate and efficiency of the system by using the interrupt mode. When there are a number of hospital beds call, the system can also be a circular call records show.

Key words: ward call, SCM, interrupt, liquid crystal display

目录

前言....................................................................................................................................................... I 第1章绪论.. (3)

1.1课题概述 (3)

1.2智能病床呼叫系统发展概况 (3)

1.3课题研究的目的和意义 (3)

1.4 设计任务 (4)

1.5 任务要求分析 (4)

第2章系统设计和方案选择 (5)

2.1 设计思路 (5)

2.2 键盘采集方案选择 (5)

2.3设计芯片的选择 (6)

第3章系统硬件电路设计 (7)

3.1单片机控制系统硬件设计 (7)

3.2液晶显示的硬件设计 (7)

3.3扫描键盘的硬件设计 (8)

3.4时钟芯片的硬件设计 (9)

3.4中断电路设计 (9)

第4章系统软件设计 (10)

4.1主程序设计 (10)

4.2矩阵键盘的中断程序的设计 (11)

4.3液晶LCD12864驱动程序的设计 (13)

4.4实时时钟DS1302驱动程序的设计 (14)

第5章仿真结果及分析 (15)

5.1 无病人呼救时的仿真结果 (15)

5.2 有病人呼救时的仿真结果 (15)

5.3 有多个病人呼救时的仿真结果 (16)