基于低压电力线的病房呼叫系统

目的：介绍一种基于低压电力线通信的病房呼叫系统。方法：该系统基于单片机和扩频通信芯片设计,系统采用主从结构,呼叫源置于各个病房内,主机置于护士站监控中心,电力线作为传输通道,实现主机和从机之间的双向数据传输。扩频通信芯片采用SC1128,专门针对中国低压电网特性而设计,是一款适合中国低压电网特性的数据传输专用芯片。结果：经试验室检测该系统能够实现正确的通信功能,最大通讯距离为500m,能够满足一般医院的要求。结论：该系统利用电力线载波通信技术、单片机多机通信和计算机监控管理技术设计,具有呼叫、振铃、显示排队、优先权设定、存储记录、查询等功能,用于医院病房对护理总台的呼叫,省略了复杂的布线,操作简单,使用方便,适合在各级医院使用和推广。

Ward Calling System Based on Power Line Communication

Objective To introduce ward calling system based on power line communication. Methods The system is de- signed based on SCM and spread spectrum communication chip. It adopts principal and subordinate structure, transmits data on low-voltage power line. The spread spectrum communication chip is SC1128, which is specially designed for Chi- nese low power line. Results The system can communicate correctly in testing, and the max communication distance is 500m. Conclusion The system have many functions such as line up shows, priority setting, records storage, etc. It has been fit to be put into use and be extended in all of the various levels of hospital.