短暂电磁干扰统计参数测量系统  

The System for Measurement of Statistical Parameters of Transient Pulse Interference

作　　者：周克生[1] 沙斐[1] 张林昌[1] 

机构地区：[1]北方交通大学抗电磁干扰研究中心

出　　处：《北方交通大学学报》1993年第4期364-368,共5页Journal of Northern Jiaotong University

基　　金：国家自然科学基金

摘　　要：介绍一种用于测量短暂电磁干扰统计参数的测量系统.该系统主要山干扰测量仪、模数转换板和微机等组成.该系统可在国际无线电干扰特别委员会规定的 A 和 B 频段上同时测量干扰的幅度概率分布和平均穿越率,系统测量的动态范围是60dB,可连续测量20次,两次连续测量的时间间隔小于1ms,并根据幅度分布测量结果计算出准峰值、平均值、有效值.校验结果表明该系统工作正常,已用于电气化铁路电磁干扰测量,文中还给出了有关测量结果.The parer introduces a measurement system for statistical parameters of transient EMI.The system mainly consists of an EMI test receiver,an analog to digital convert board and a PC computer.The system can simultaneously meas- ure the amplitude distribution and crossing rate distribution of EMI in CISPR A,B band.The dynamic range of the system is 60 dB.It has a consecutive measurement function which is specially designed for measuring transient EMI. The maximum measurement times is 20 and the period between two consecutive measurement is 1 ms.The measurement results are expressed in APD,CRD or RMS,AV,and Quasi-Peak value which are calculated by a software.Calculation shows that the system works well.The paper presented some APD and CRD data for electrified railway interference measured with the system.

关 键 词：干扰测量仪 电磁干扰 

分 类 号：TM937.3[电气工程—电力电子与电力传动]