单片机控制的病房呼叫系统.doc

PAGE PAGE 1 摘要 随着社会的发展，病房呼叫系统已经成为了病人请求值班医生或着护士进行诊断、护理的紧急呼叫工具，使用它主要是为了用于协助医院病员在病床上方便地呼叫医生或者护士，并可将以病人的请求快速传送给值班医生或护士，已经成为了提高医院和病房护理水平的必备设备之一。因此使用病房呼叫系统，可以方便病人更快找到医生，以节约病人的宝贵时间。 本次毕业设计是基于51系列的单片机设计的病床呼叫系统。该系统以AT89C51单片机作为这个系统的控制中枢，另外采用了矩阵键盘、LED显示电路和部分数字电路组成。当病人要呼叫时，可以按键，同时会有蜂鸣器发出响声，指示灯也会随即闪烁，不同的数码管可以将床位号显示出来。当多人使用时可实现循环显示，医护人员按下“清零”键取消当前呼叫。此时，系统将按按下按键的先后顺序来显示其他病人编号，总之，此系统可以为医院提供一个效率高、成本低、操作方便、易于安装系统。 关键词：AT89C51，矩阵键盘，LED，病床呼叫 Abstract? With the development of society, ward calling system has become the patient asking doctors or nurses for diagnosis, emergency call tool, use it mainly for assisting the hospital patient conveniently to call a doctor or nurse in the bed, and will take the patients request fast delivery to the duty doctor or nurse, has become the one of the necessary equipment in the hospital and improve the nursing level. Therefore the use of ward call system, can quickly find the doctor patient, in order to save the time of patients. This graduation design is the call system of 51 Series MCU design based on the bed. The system uses AT89C51 microcontroller as the control center of this system, and the matrix keyboard, LED display circuit and digital circuit. When the patient to call, can press keys, but also can have the buzzer sound, the indicating lamp will immediately flashes, the different digital tube can display the bed number. When multiple people can use to achieve circular display, press the reset key personnel to cancel the current call. At this point, the system will in order to show other presses the patient number, in a word, this system can provide a high efficiency, low cost, convenient operation, easy to install system for hospital. Keywords: AT89C51, matrix keyboard, LED, hospital call 目录 TOC \o 1-3 \h \u 9392 第1章 绪论 1 3854 第2章 设计方案 2 1123 2.1 设计的目的和要求 2 18882 2.1.1 设计的目的 2 382 2.1.2 设计的要求 2 6896 2.2 设计思路 3 17429 第3章 硬件系统设计 4 486 3.1 硬件系统组成 4 4003 3.2 单片机最小系统 4 30733 3.2.1 单片机STC89