工业现场电子测控系统的电磁干扰分析与对策  

Analysis and Countermeasures for Electromagnetic-interference on Measurement and Control Systems in the Field of Industry

作　　者：姚广平[1] 陈健东[1] 

机构地区：[1]江苏工业学院信息科学与工程学院,江苏常州213164

出　　处：《电测与仪表》2009年第S1期117-120,共4页Electrical Measurement & Instrumentation

摘　　要：电子测控系统的抗电磁干扰能力直接关系到系统运行的可靠性,电子测控系统抗干扰设计的依据来源于对现场电磁干扰环境的了解和干扰信号作用于电子电路的物理机制。本文讨论了工业现场的电磁干扰现象,对电磁干扰源的性质、产生和传播等环节作了分析,主要介绍了工业测控系统的抗干扰措施。提出以主动和被动相结合的抗干扰策略,给出了具体的适用于工业测控系统的屏蔽、吸收、缓冲、滤波、接地、电气布线、PCB布线、软件陷阱和软件消抖等抗干扰措施。这些策略和措施的实施会显著提高电子测控系统的电磁兼容(EMC)性能。The capacity of anti -interference of a measure and control system related to the system operation reliability directly.Design of anti-interference depends on the understanding of interference environment and the principle of interference on the circuit.The phenomenon of electromagnetic-interference and its property,producing, transmit are analyzed in this paper.The countermeasures of anti-interference are active and passive.Especially,the specific methods are given in the paper,such as shield,absorb,buffer,filter,grounding,wiring,PCB,softer pit,soft tingle eliminate and so on.The electromagnetic compatibility(EMC) on the system will be improved where use these strategies of anti-interference.

关 键 词：电磁干扰 抗干扰 测控系统 屏蔽 吸收 软件陷阱 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]