摘要：科技日新月异，先是有线技术，再是无线技术走进生活。无线传输技术也更加成熟。本设计是将无线传输技术应用到临床上的研究型课题，实现基于单片机的无线传输模块构成的无线多路病床呼叫系统。本文以STC89C51单片机为控制核心，通过无线发射模块发射传输信号，无线接收模块接收信号，经STC89C51处理后显示输出,从而实现病人与医护的无线远距离沟通。本病床呼叫系统能够实现100米的远距离发射接收，也能绕过障碍物传输，其性能稳定、占用空间小、使用材料少、传输速度快、距离远，能够满足临床应用的要求。76090

毕业论文关键词：单片机，无线传输模块，病床呼叫

Abstract：Science and technology changes with each passing day, the first cable technology, then wireless technology into the life again。 Wireless transmission technology is also more mature。 This design is the wireless transmission technology is applied to the clinical research topic, implementation is based on single chip wireless transmission module of wireless multi-channel sickbed calling system。This paper takes STC89C51 microcontroller as the control core, the transmission signals transmission by wireless transmitting module, wireless receiving module received signal, after STC89C51 treatment shows that the output, so as to realize the wireless remote communication of patients and health care。 The sickbed calling system can achieve 100 meters long-range launch, receive, also can bypass obstacles transmission, its stable performance, small footprint, use less material, transmission speed and distance, can meet the requirements of clinical application。

Keywords：Microcontroller, wireless transmission module, sickbed calling

目录

1 绪论 4

1。1系统设计概述 4

1。2设计要求及目标 4

1。3设计可行性及步骤 4

2 系统硬件设计 5

2。1系统原理框图 5

2。2单片机芯片简介 5

2。3硬件模块设计 9

2。3。1无线发射模块 9

2。3。2无线接收模块 10

2。3。3液晶显示模块 11

2。3。4声音报警模块 12

2。3。5应答电路 13

3 系统软件设计 14

3。1设计的软件环境简介 14

3。1。1 Keil软件 14

3。1。2 Protel99SE 14

3。2 主函数程序设计 15

3。3初始化程序设计 16

3。4延时子程序设定 19

3。5 液晶显示子程序 20

4 焊接 21

4。1 电烙铁的选用及注意事项 21

4。2 焊接元器件方法 21

总结 23

参考文献 24

致  谢 25

1 绪论