医疗电子设备的传导EMI噪声机理分析与处理  

Analysis and Treatment of Conductive EMI Noise in Medical Electronic Equipment

作　　者：王壮[1] 杨雄[1] 赵阳[1] 马宝萍[1] 李世锦[1] 

机构地区：[1]南京师范大学电气与自动化工程学院,江苏南京210042

出　　处：《南京师范大学学报（工程技术版）》2017年第2期13-18,共6页Journal of Nanjing Normal University(Engineering and Technology Edition)

基　　金：江苏省教育厅高校科研成果产业化推进项目(JHB2011-20)

摘　　要：本文针对医疗电子设备的电磁兼容问题,分析了其传导EMI噪声的生成机理,包括瞬态电流、接地不良、串扰和电容耦合4种情况.本文还根据4种传导EMI噪声生成机理提出了相应的噪声处理方法,包括电源去耦、设计滤波器、采用铁氧体磁环、屏蔽等,并通过两个工程实例验证了其有效性与实用性.In this paper, according to the EMC problem of medical electronic equipment, the generatioconducted EMI noise is analyzed, which includes four kinds of situations, such as transient current, bad grounding,crosstalk and capacity coupling. This paper also puts forward the corresponding noise suppression scheme according tothe formation mechanism of the conduction of EMI noise, including power decoupling, filter dshielding, and its validity and practicability are verified by two engineering examples.

关 键 词：医疗电子设备 传导噪声机理 传导噪声抑制 

分 类 号：TM461[电气工程—电器] TN03[电子电信—物理电子学]