摘要
针对矿用产品LonWorks总线接口在实际应用中容易损坏的问题,分析了导致损毁的主要原因是收发信号不隔离、浪涌脉冲和长距离传输等因素,给出了3种由陶瓷气体放电管、自恢复保险丝、瞬态抑制二极管、静电放电保护器件组成的LonWorks总线接口保护电路。测试结果表明,该3种保护电路均满足有关标准的浪涌抗扰度测试要求,应用效果良好。
For the problem of frequent damage in application of LonWorks bus interface of mine-used products,main causes were analyzed including unisolating sending and receiving signals,electrical surge and long-distance transmission.Three protection circuits were gave which are composed of gas discharge tube,polymeric positive temperature coefficent,transient voltage suppressor and electro-static discharge protector.The test result showed that the three circuits can achieve corresponding standards about anti-interference testing of electrical surge and have good effect in use.
出处
《工矿自动化》
2011年第8期88-90,共3页
Journal Of Mine Automation
基金
"十一五"国家科技支撑计划项目(2009BAK54B04)
关键词
矿用产品
LONWORKS总线
接口保护
浪涌脉冲
陶瓷气体放电管
自恢复保险丝
瞬态抑制二极管
静电放电
mine-used product
LonWorks bus
interface protection
electrical surge
gas discharge tube
polymeric positive temperature coefficent
transient voltage suppressor
electro-static discharge
