摘要
针对医院四线制呼叫系统存在着系统安装、维护困难和无线呼叫系统易受外界干扰的问题,设计了一种基于单片机的二线制呼叫系统。该系统采用有限状态机模型和"主机查询"方式,在保证了系统实时性的同时,有效解决了多个分机同时呼叫主机引起冲突的问题。经过临床应用,该系统有效解决了系统安装、维护困难和易受外界干扰的问题。系统实时性强、可靠性高、成本低、安装及使用方便,具有很强的实用价值。
In four-wire-based medical intercom system exist the problems of difficult installation,and maintenance,and the wireless medical intercom system is vulnerable to outside interference.This paper proposes a two-wire-based medical intercom system based on single chip,which uses a finite state machine model and the ＂host inquiry＂ mode to ensure the real-time while effectively solve the conflict caused by multiple extensions calling the host at the same time.The clinical application indicates that the system could effectively solve the problem of difficult system installation,maintenance and susceptibility to external interference.The system has the advantages of real-time performance,high reliability,low cost,easy installation,easy use,and thus is of strong practical value.
出处
《通信技术》
2011年第2期31-33,共3页
Communications Technology
关键词
呼叫系统
二线制
有限状态机
冲突处理
intercom system
two-wire-based
finite state machine
conflict management
