摘 要：医院无线呼叫系统，是一种简便快捷、在医院及养老院应用广泛的新型无线呼叫系统。如上所说，此设计的基本要求是要简单、便捷，并且易于在医院间推广。

本设计主要采用STC89C52单片机作为处理数据中心，实现无线信号传输。 病房安装从机设备通过NRF24L01无线传输模块向主机传输数据和信号。主机在接收数据后通过单片机处理，接着发送信号给蜂鸣器二极管，分别发出声音及光报警，医护人员可以根据信号得到确切的病人位置信息，并可以在主机端操作，取消报警，这一过程实现了远距离的医患信息交流互通。本设计整体可以分为主从两部分，按照功能划分，分别装置于病房及护理站，从机采集信号，主机处理信号。本设计通过融合单片机与无线技术实现快速的远距离信号传输。

本论文有图21幅，表4个，参考文献12篇。

关键词：NRF24L01无线收发模块  STC89C52单片机 无线呼叫 

Hospital ward wireless call system

Abstract：The hospital wireless call system is a new type of wireless call system that is simple, fast, and widely used in hospitals and nursing homes. As mentioned above, the basic requirements of this design are simple, convenient, and easy to promote between hospitals.

This design mainly uses the STC89C52 microcontroller as the data center to achieve wireless signal transmission. The ward installation slave device transmits data and signals to the host through the NRF24L01 wireless transmission module. Then, the host receives and processes the data by the single-chip microcomputer, and sends a signal to the buzzer to respectively send audible and visual alarm. According to the signal, the medical staff can obtain the exact patient location information and cancel the alarm at the host end. That is, long-distance data transmission and processing are realized. The system can be pided into two parts, the slave and the host, according to the functional classification. They are installed in the ward and the nursing station respectively. The slaves collect the signals and the host processes the signals. This design can realize a rapid, long-distance signal transmission by the integration of microcontroller and wireless technology.

Key Words: NRF24L01  STC89C52MCU  wireless call system

目 录

摘 要 I

ABSTRACT II

目 录 III

图清单 V

表清单 V

1 绪论 1

1.1 研究意义 1

1.2 病床呼叫发展状况 1

1.3 病房无线呼叫研究内容 1

2 无线呼叫方案设计 2

3 无线收发芯片简介 3

3.1 无线收发数据模块 3

3.2 液晶显示模块介绍 6

3.3 STC89C52单片机简介 9

4 硬件系统的设计 11

4.1 硬件系统设计总体方案 11

4.2 单片机最小系统组成部分 12

4.3 单片机的时钟及复位电路 13

4.4 液晶显示模块电路 13

4.5 按键分布电路 14

4.6 供电模块 14

4.7 声光报警电路