中文摘要：

通过实驾试验采集驾驶员的心电信号,利用心率变异时频分析方法,结合静测状态数据,分析了试验过程不同速度驾驶员心率增长率（Ni）、R-R间期的标准差（SD）、归一化的高频（HF,n,o,r,m）3个指标值的变化规律。结果表明：驾驶员在林区冰雪道路上行车时,冰雪条件增大了驾驶员心生理的负荷;行车速度是影响林区冰雪道路驾驶员心生理反应的一个重要因素,高速组驾驶员各项指标值均高于低速组的;不同速度组驾驶员的心生理变化具有显著差异性。

英文摘要：

We collected the real-test ECG signal by the time domain and frequency domain analysis to contrast the result of the static index, change rule of driver＇s fluctuating rate of heart rate, standard deviation of R-R interval and high frequency normalization index in different velocity. The snow-covered condition could make the drivers a strong sense of higher physi- cal and psychological load, driving velocity was the key factor, the index of high-speed driver was higher than that of the low-speed, and the psychological and physiological change of two velocities had significant difference.