基于单片机的病房无线呼叫系统设计

Design of Ward Wireless Calling System Based on Single-chip Microcomputer

为解决传统病房有线呼叫系统存在的布线复杂、易出故障、维修不便、不能在现有床位基础上及时增加新床位信息等问题,提出了无线呼叫系统设计。采用STC89C52系列单片机作为主控芯片,nRF905作为无线收发的核心芯片,并配以相应的LCD显示屏和声光报警器,设计出了无线病房呼叫系统。结果表明,该系统可靠传输距离达90 m以上,具有一定的抗干扰性,且可以临时方便增加床位显示信息,能够满足医院的临时实际需求。该系统性能稳定,操作简便,可以有效代替传统有线呼叫系统。

To solve the problem existed in the traditional ward calling system including cabling wiring intricately,easy to out of order,in-convenient maintaining,adding new beds information on the basis of existing beds and other issues,put forward the design of wireless calling system. With STC89C52 series single-chip microcomputer as the master control chip,nRF905 as the core of the wireless trans-ceiver chip,and matched with the corresponding LCD display,sound and light alarm,then design the wireless ward calling system. Results show that the system reliable transmission distance reaches 90 meters,having a certain anti-interference performance,and conveniently and temporarily increasing beds display information,which can satisfy the hospital actual demand temporarily. The system has stable per-formance,easy to operation,can effectively replace traditional wired calling system.