通信电缆工频条件下理想屏蔽系数测试系统  

System to Test the Ideal Screening Factor of Communication Cables at Commercial Frequency

作　　者：许博[1] 毛庆传[2] 涂建坤[2] 甘屹[1] 

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海电缆研究所,上海200093

出　　处：《电线电缆》2010年第4期15-18,共4页Wire & Cable

摘　　要：通信电缆的金属屏蔽层在传输信号的过程中具有屏蔽外界电磁场干扰的作用,这种作用的大小可以用理想屏蔽系数来表征。文中介绍了以通信电缆工频条件下理想屏蔽系数为测试对象,以单片机为处理核心的理想屏蔽系数测试系统设计原理和基本组成。该系统可以快速测量电缆的理想屏蔽系数,测量精度符合要求,操作也比较方便。The metal shield of communication cables has the function to shield the interference of the outside electric and magnetic fields when the cable transmits signals.This function may be characterized by the ideal screening fac-tor.This paper presents the design principle and basic components of the testing system which aims at testing the ide-al screening factor of communication cables at commercial frequency and which employs a single chip processor.This system can quickly measure the ideal screening factor of the cable with the required accuracy and easy operation.

关 键 词：通信电缆 工频(50Hz) 理想屏蔽系数 单片机 

分 类 号：TM206[一般工业技术—材料科学与工程]