【摘要】 警觉度反映了大脑的警惕状态。在航空航天、车辆驾驶、医疗军事等领域检测操作员的警觉度对减少事故概率具有重要意义。综述了近10年在基于生理信号的警觉度检测领域的研究进展,将其分为基于脑电、心电、脑血红蛋白浓度、其他生理信号和多生理信号五类,分析了各类方法的现状和发展趋势,发现目前使用的生理信号中,脑电最为常用,心电、眼电、脑血红蛋白浓度次之。且绝大多数研究仅对清醒和困倦这两种警觉水平进行判断,分类数较低。目前研究一方面趋向于通过寻找新的敏感特征、改进检测算法、结合其他生理信号等来提高准确率;另一方面趋向于开发穿戴式、无线化的生理信号传感器以推进警觉度检测实用化。更多还原

【Abstract】 Vigilance represents the state of brain alertness.Detecting operators’ vigilance is of great significance to reduce the probability of accidents in aerospace, vehicle driving, medical and military fields.The research progress in the field of vigilance detection based on physiological signals in recent ten years is reviewed, which is divided into five categories based on electroencephalogram(EEG),electrocardiogram(ECG),cerebral hemoglobin concentration(CHC),other physiological signals and multiple physiological signals.The present situation and development trend of five kinds of methods are analyzed.It is found that among the physiological signals used, EEG is the most commonly used, followed by ECG,EOG,and CHC.Most studies classified two levels of vigilance including wakefulness and drowsiness.On the one hand, the current research tends to improve accuracy by finding new sensitive features, improving detection algorithms, and combining other physiological signals; on the other hand, it tends to develop wearable, wireless sensors of physiological signals to promote the practicality of vigilance detection.更多还原