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个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职：Vice Dean of Graduate School
其他任职：建筑能源研究所所长
性别：男
毕业院校：哈尔滨建筑大学
学位：博士
所在单位：土木工程系
学科：供热、供燃气、通风及空调工程. 控制理论与控制工程. 建筑学
办公地点：大连市凌工路2号大连理工大学建设工程学院3号楼601室
联系方式：0411-84706260
电子邮箱：zjldlut@dlut.edu.cn
Solving for the best value of bias resistor to promote stability of Rs485 fieldbus
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论文类型：期刊论文
发表时间：2015-07-03
发表刊物：International Journal of Future Generation Communication and Networking
收录刊物：EI
卷号：8
期号：3
页面范围：89-96
ISSN号：22337857
摘要：This paper analyzes several factors affecting the reliability of RS485 fieldbus communication, and then establishes the equivalent circuit model in order to solve bias resistor. The value range of bias resistor on the fieldbus is 556Ω~716Ω, which is determined by using the law of KCL and current limiting method. Furthermore the best value of bias resistor is derived about 670Ω for different unit loads based on the relationship between number of network nodes and the value of bias resistor, and the corresponding maximum network nodes of fieldbus are determined too. The research of this paper provides theoretical basis and engineering design guidance for the application of RS485 fieldbus. © 2015 SERSC.