1、I 摘 要 病房呼叫系统由安装在护士站的报警装置和病房床头的呼叫单元组成 ， 是病人请求医生或护士进行诊断和护理的工具。借助 病房呼叫系统 架起一座病患与医护人员之间及时沟通的桥梁， 可以提高医护人员的工作效率及对病人的服务水平 ， 进而保证病人的安全 。同时可以合理配置护理人员，降低运行成本，提高医院收益。 该系统以 STC89C52 单片机为控制核心，它控制呼叫检测、呼叫响应、呼叫报警、呼叫显示和数据通信。 系统 设计 采用主从结构 。 从机实现呼叫 检测 功能 ， 主机实现声光报警、 LCD 显示和与 PC 通信等功能 ， 主、从机借助串行通信实现呼叫信息的传输。本设计经过原理图设计、元
2、器件焊接，布线和编程调试等过程 ， 最后对系统进行了整体测试。结果表明 ,系统各功能模块工作状态良好 ， 整个系统设计基本上达到了预期的目标。 关键字： 病房呼叫系统； STC89C52 单片机 ； LCD 显示；声光报警；串行通信II Abstract Ward Calling System, consisting of the alarm-device in the nurse station and the calling-device in the ward, is an important tool for patients to ask doctors or nurses for
3、help. With the ward calling system setting up a timely communication bridge between patients and medical staff, can improve the staffs work efficiency and service level of the patient and ensure the safety of the patients.Using the ward calling system can rational allocation of nursing personnel cos
4、t at the same time, reducing the running cost and improving the hospital profit. STC89C52 single-chip microcomputer is the control core of the system,which controls call testing,call response,call alarm,call display and data transmission.The system uses the master-slave structure design. The slave h
5、as the function of call and the host has the function of alarm, LCD display, and communication with PC,by the serial communication realizing the information transmission between the slave and the master.After schematic design,components welding, wiring and programming debugging process, finally carried out overall tests on the system. Results show that the systems each function module works in good condition, the whole system design basically reached the expected goal. Key words: ward calling system； STC89C52； LCD display；sound-light alarm； serial communication
