文档介绍：人体感知电流阈值与脑电图特征的关联研究*
王晓飞1,2,张朝晖1,李东2,王一鸣2,赵旭3
(1 北京科技大学信息工程学院北京 100083;2 北京信息科技大学光电工程学院北京 100192;
3 中国人民解放军第306医院神经内科北京 100101)
摘要:在电气产品的漏电安全性能测试中,人体感知电流是最重要的指标之一。传统上,人体感知电流阈值的测定完全依赖受试者的主观感受,可靠性、一致性较差。依据脑电活动机理建立了实验研究方案,获得了382组实验数据,探索了脑电特征与感知电流阈值的关系。研究发现:时域脑电图经快速傅里叶变换后,频域特性与感知电流阈值之间存在明显的关联:绝大多数人通电前后脑电特征确有明显变化,该变化包含a波或b波幅度抑制或增强,但其明确的对应变化规律,尚待进一步深入研究,研究结果将有助于对电气安全性能的客观认定。
关键词:电气安全性能测试;脑电图;快速傅里叶变换;感知电流阈值
中图分类号:TH7 文献标识码:A 国家标准学科分类代码:
Research on the relation between human current threshold for
perception and feature of electroencephalogram
Wang Xiaofei1,2, Zhang Zhaohui1, Li Dong2, Wang Yiming2, Zhao Xu3
(1 School of Information Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2 School of Electro-Optical Engineering, Beijing Information Science and Technology University, Beijing 100192, China;
3 Department of Neurology, The 306th Hospital of PLA,Beijing 100101, China)
Abstract:In testing the electrical safety performance of leakage current on electrical products, human current threshold for perception is one of the most important parameters. Traditionally, the testing of human current threshold for perception depends on their subjective feelings, and has poor reliability and consistency. In the paper, an experiment research method is established based on the principle of EEG (electroencephalogram) activity, 382 groups of experim