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为探讨高原公路线形对驾驶员心理和生理特性的影响,利用生物反馈系统对急进高原公路的驾驶员进行实地行车试验。通过定量分析,分别建立驾驶员β频段脑电(EEG)信号变化值与试验路段海拔、道路线形之间的关系模型。分析结果表明:高原公路驾驶员行车时的β频段脑电信号变化值随路段海拔的升高而增大,它与道路平曲线半径成负相关;纵坡度的变化对β频段脑电信号变化值的影响不显著,线形组合值的增加会导致脑电波频段功率值上升;海拔和线形组合值同时作用时,驾驶员的脑电波频段功率值变化更加显著。
In order to explore the influence of the high-altitude road profile on the driver's psychological and physiological characteristics, a biofeedback system was used to test the driving of the driver on the steep plateau. Through quantitative analysis, the relationship model between the change of EEG signals and the altitude of road section and road alignment of the pilot section was established respectively. The results show that the β-band EEG signal changes when driving on the plateau road, which increases with the elevation of the road section and negatively correlates with the curve radius of the road. The changes of the longitudinal slope change the changes of β-band EEG signal . The increase of linear combination leads to the rise of power in the EEG wave band. When the combination of altitude and linearity is applied at the same time, the driver's EEG frequency band changes more significantly.