摘要在当今世界，去医院看病输液的人群越来越多。怎么帮助留院观察要更换输液袋的病人即是个难题。当盐水袋即将挂完，身旁没有陪同的家人或者朋友，会对病患造成隐患。病房呼叫系统，为病人与医务人员实时沟通提供了桥梁，便利了患者快速寻找医务人员，节约了时间。这次制作的是以微控制器为为基础搭配无线模块的简易传呼设备。 选取STC89C52微控制器作为系统的主心骨，搭配nRF24L01无线元件进行数据传输，微控制器收取后会输出在显像屏上，在此期间还能够发出警报，以便病患可以迅速联系医护人员。医务人员也可快速和精确的了解患者的所在方位的迫切须要。系统由主控制器上的蜂鸣器和LED作为报警，以通知护士。医护职员摁下呼叫主按钮，关闭相应的铃声。该系统易于操作，并且具有成本效益。76871

毕业论文关键词：单片机STC89C52  无线模块  声光警报  呼叫系统

NRF24L01 Based Wireless Ward Call System

Abstract In today's society, how to enhance service quality and service level is the most important issue in many service industries, hospitals as well。 How to help the patients who need to replace infusion bags, that is an issue。 If their families are not around, the patients will need help for nurses。 Ward call system, which links patients and medical staffs, let patients quickly find medical staffs。 It really saves time。 Wireless ward call system is composed by microprogrammed control unit and wireless unit。 I selected MCU STC89C52 to be  the core of the system, wireless transmitting unit nRF24L01 is used to send and receive dates。 Single chip micyoco STC89C52 gets signals then put them on  LCD display screen。 In the period ,it also could make an alarm, patients can quickly contact  doctors 。Medical staffs could know about the patient’s location in urgent, so that patients can be dealt promptly。 Ward call system has host controller ,the controller is able to make noise by LED and buzzer audible alarm to alert the nurses someone needs help。 Medical staffs press  primary key to cancel the call。 The system is easy to use。 it is also very cost-effective。

Keywords: SCM STC89C52；wireless module；audible and visual alarm； alarm call system

目录

摘要 I

Abstract II

目录 III

1 绪论 1

1。1 课题的背景 1

1。2 病房呼叫发展状况 1

1。3 研究的主要内容 1

2 总体方案设计 3

3 芯片资料简介 4

3。1 无线收发模块 4

3。2 LCD1602液晶显示模块 7

3。3 STC89C52单片机简介 9

4 硬件系统的设计 10

4。1 硬件系统设计总体方案 10

4。2 单片机最小系统 11

4。3 单片机的时钟电路与复位电路的设计 11

4。4 液晶显示模块 12

4。5 按键模块电路 12

4。6 电源模块 13

4。7 无线传输模块 13

5 软件系统的设计与系统功能实现 14

5。1 软件设计原则及编程思路