摘要
驾驶疲劳是造成交通事故的重要原因,用心电图指标来评价驾驶疲劳对于驾驶疲劳的研究具有重要意义。这里采集了16名被测试者90分钟实验室模拟驾驶操作过程的心电信号,并对实验开始和结束时的15分钟时段心电信号的7项时频域指标进行分析。研究发现:有四项心电时频域指标与疲劳程度明显相关。驾驶疲劳实验后,心率变异性时域测量指标中的RR间期的标准差SD明显上升,心率变异性频域测量指标中的低频段功率值LF明显上升,高频段功率值HF明显下降,LF和HF的比值LF/HF明显上升。因而,采用此四项心电图时频域指标,可以对驾驶疲劳程度进行定量化的反映和评判。
Driving fatigue is an important cause Of traffic accidents,and it is important to evaluate the degree of driving fatigue by quantum parameters.In this paper,7ECG indexes are checked on their correla tion with driving fatigue intensity,so a s to f ind the effective parameter for driving fatigue assessment.The ECG data are collected from 16subjects under90minutes simulated driving operat ion,with for driving fatigue assessment the15minutes data at the beginning and end of the experiment are analyzed separ ately.is revealed that four ECG indexes are signif cantly related to the degree of driving fatigue.The standard deviation(SD)of RR intervals and the powervalue of Low Frequency(LF)of Heart Rate Variability(HRV)and the value of LF /HF increase ob-viously,while the power value of Hig h Frequency(HF)decreases markedly.It is suggested that these four ECG indexes can be used to evaluate the degree of driving fatigue quantificat ionally.
出处
《机械设计与制造》
2002年第5期94-95,共2页
Machinery Design & Manufacture
关键词
驾驶疲劳
心电图指标
心率变异性
相关性
交通事故
Driving fatigue
Electrocardiograph index
Heart RateVariability(HRV)
Correlation
