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为提高林区冰雪道路行车安全性,探讨林区冰雪道路驾驶员心理与生理疲劳状态,针对东北林区冰雪道路环境特殊性,通过实驾试验采集驾驶员的心电信号,基于心率变异性(HRV)指标的有效定量评价,结合指标间的灰色关联度分析,研究东北林区冰雪道路环境下驾驶员的心率(HR)、R-R间期标准偏差(SDNN)、低频与高频比值(LF/HF)及相关维数(D2)4个指标值间的变化规律及其随时间的变化规律。结果表明,驾驶员在林区冰雪道路驾驶过程中,HRV指标与HR关联次序为SDNN,D2,LF/HF,驾驶员在林区冰雪道路行车初期驾驶员紧张程度大;连续行车驾驶员精神负荷与体力负荷都会增大,出现疲劳累积效应。
In order to improve driving safety of icy and snowy roads in forest area, explore the mental and physical fatigue status of icy and snowy road drivers in forest area. According to the particularity of icy and snowy roads in the forest area of northeastern China, the driver’s ECG signals were collected by real driving test. Based on heart rate variability (HRV), and the gray correlation analysis between the indexes, the author studied the HR, RR SDNN, LF / HF) and the correlation dimension (D2), and the changes with time. The results showed that during the driver driving on ice and snow road in forest area, the correlative order of HRV index and HR was SDNN, D2 and LF / HF. The pilot was nervous when the driver was driving the ice road in forest area. And physical load will increase, the cumulative effect of fatigue.