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为了解驾驶员在高原低氧路段的疲劳程度,以寻求缓解驾驶疲劳提高行车安全的途径,利用生物反馈检测仪分别对初次与经常进入高原公路低氧路段的驾驶员进行实地行车试验。通过对比不同海拔高度受测驾驶员脑电(EEG)变化特征,选取脑电8~13频段与14~30频段的平均功率比值R作为评价驾驶员疲劳时脑电特性指标R,定量分析海拔、连续驾驶时间对R的影响,同时建立R与海拔、连续驾驶时间之间的关系模型。研究表明:海拔与连续驾驶时间是影响驾驶员疲劳的主要因素,R随着海拔的升高与连续驾驶时间的增长而逐渐变大。初次在高原低氧路段行车的驾驶员表现出的疲劳感强于经常在高原低氧路段行车的驾驶员。
In order to find out the driver’s fatigue in the low altitude section of the plateau and seek ways to alleviate the driving fatigue by using driving fatigue, the biofeedback detector was used to test the driving test of the driver who entered the hypoxia section of the high altitude road for the first time. By comparing the characteristics of EEG changes of pilots under different altitudes, the average power ratio R of EEG frequency band 8 ~ 13 and 14 ~ 30 frequency band was chosen as the index R of EEG assessment when the driver was fatigue. Quantitative analysis of altitude, Continuous driving time on the impact of R, while establishing R and altitude, continuous driving time between the relationship model. The results show that altitude and continuous driving time are the main factors that affect driver fatigue, and R increases gradually with the increase of altitude and continuous driving time. The drivers who first drive on the plateau hypoxic route showed a greater sense of fatigue than those who often drive on the plateau hypoxic route.