高速公路路侧景观色彩对驾驶员心率指标的影响

在长延高速公路进行实车实验采集所需数据,以景观色彩均值、驾驶时间为自变量,驾驶员心率均值为因变量,基于趋势面分析方法建立了三者之间的关系模型。然后采用单因素敏感性分析方法对模型中的两个自变量进行敏感性分析。结果表明:色彩均值与驾驶员心率成负相关,即随着色彩亮度的增加驾驶员疲劳程度逐步缓解;驾驶时间与驾驶员心率均值成正相关,即驾驶时间越长,心率均值越大,驾驶员倾向于疲劳;并且驾驶员心率均值对驾驶时间的敏感程度要高于其对路侧景观色彩均值的敏感程度。

Impact of roadside landscape color on driver mean heart rate

Vehicular experiments were conducted on Chang-Yan expressway to collect the required data.Using mean RGB of landscape and drive time as independent variables,mean heart rate(MHR) as dependent variable,the function between the three variables were developed based on trend surface analysis method.Then sensitive analyses of the two independent variables were conducted based on single factor method.The results show that mean RGB color is negative correlated with MHR,and with the increase of color brightness,the fatigue level of the driver decreases.Drive time is positive correlated with MHR,and with the increase of drive time,the MHR also increases,which indicates that the driver becomes more fatigue.The results also show that MHR is more sensitive to drive time than to landscape color.