脑电图机的电磁兼容测试方法解析

Analysis of Electromagnetic Compatibility Test for Electroencephalograph

脑电图机可自动记录大脑活动时产生的生物电信号,随着医疗技术水平及社会经济水平的不断提高,脑电图机的使用日渐普及,已被广泛用于科研和临床诊断中。然而,由于脑电信号具有微弱和易受干扰等特征,与普通医疗设备相比,脑电图机的电磁兼容测试有诸多特殊要求,且脑电图机抗扰度试验的判定存在较大的分歧。该研究描述了脑电图机的结构组成及工作原理等基本情况,并结合相关标准从测试布置、测试要求、符合性判据等方面解析了脑电图机的电磁兼容测试方法。

Electroencephalograph can automatically record the bioelectrical signals generated by brain activities,with the continuous improvement of medical technology and economic level,electroencephalograph is becoming more and more popular in clinical use,and has become a common medical equipment for scientific research and clinical diagnosis.However,due to the electroencephalogram signals are weak and easily disturbed,there are many special requirements during the electromagnetic compatibility testing of electroencephalograph compared to ordinary medical equipment.And there are great differences in the determination of immunity test of electroencephalograph.The structural components and working principle of electroencephalograph were described,and combining with the related standards,the electromagnetic compatibility test method of electroencephalograph was analyzed from test layout,test requirements and compliance criteria.