【作者】 王娆芬； 张建华； 王行愚；

【Author】 WANG Rao-fen,ZHANG Jian-hua,WANG Xing-yu (School of Information Science and Engineering,East China University of Science and Technology, Shanghai,200237,China)

【机构】 华东理工大学信息科学与工程学院；

【摘要】 该文使用aCAMS作为实验平台,采集了11位被试,每位被试两次实验的心率信号。应用小波包分解,研究不同任务负荷水平下,过程控制操作员HRV的VLF、LF、HF成分的能量、高低频能量比LF/HF和小波包熵的变化,以及这五项指标与操作员性能客观评价、主观评价和手动控制子系统个数之间的相关性。分析结果显示,针对不同被试,这五项指标中的某几项与操作员客观评价或主观评价存在显著相关性,可以作为该被试心理负荷的量化指标。更多还原

【Abstract】 In this paper,the experiments are carried out on aCAMS.Eleven subjects are selected for HR signal sampling,and each of them works for two sessions.The wavelet packet transform method is employed to calculate five indices of process control operators’ HRV,including the energy of VLF,LF,HF,LF/HF ratio and wavelet packet entropy.Then,their relations with operator functional state are analyzed.The results show that:for a given subject,some of the five indices can indicate his mental workload,which can be used for operator functional state assessment.更多还原