摘要
文章针对传统的医院病房有线呼叫系统中布线困难、不易改扩建的缺点,设计了基于无线通信技术的医院病房无线呼叫系统。采用单片机作为主控芯片,nRF905作为无线收发模块,以应答式双向无线通信方式为基础,采取了载波监听、出错自动重发等措施,保证了通信的低误码率和高可靠性。现场测试表明,该呼叫系统能够有效替代现有的有线呼叫系统,具有安装施工简单、易于扩展等特点。
In order to solve the disadvantages of difficult installation for wiring and low extensibility in traditional hospital sickroom wire calling systems,this paper designs wireless calling system in hospital wards based on wireless communication technology.Taking single chip microcomputer as main control chip,nRF905 as wireless transceiver modules,based on response-type two-way wireless commu-nication,taking the measures of carrier sensing and automatic retransmission if error,which ensures the low error rate and high reliabil-ity.The field test shows that this calling system can effectively replace existing wired calling system and has simple installation and con-struction,easy to espand and other characteristics.
出处
《企业技术开发》
2011年第6期11-13,共3页
Technological Development of Enterprise
关键词
无线呼叫系统
单片机
NRF905
通信协议
wireless calling system
single chip microcomputer
nRF905
communication protocol
