【摘要】 为掌握高原公路纵坡路段驾驶员心率变化特征,使道路线形参数选择得更合理、更有利于安全行车,利用生物反馈仪在海拔3 000 m以上的高原公路进行驾驶员行车试验。通过定量分析,确定了高原公路纵坡路段影响驾驶员心率变化的主要因素,并分别建立驾驶员心率增长率与纵坡高程、坡度的关系模型,以及纵坡高程、坡度与心率增长率的二元回归模型。分析结果表明,驾驶员心率变化随海拔升高而增大,心率增长率约在海拔3 600 m后呈加速增加趋势;驾驶员心率变化随道路纵坡度增大而增大,上坡时(正)坡度、下坡时(负)坡度增加均会导致心率增长率增加;在海拔和坡度的共同作用下驾驶员心率变化更为明显,海拔越高、坡度越大,心率增长率越大。更多还原

【Abstract】 In order to determine the characteristics of driver’s heart rate change on longitudinal slope of plateau highway,and therefore to improve the highway traffic safety,field driving experiments were conducted on both flat and elevated slopes of a highway at an altitude of 3 000 meters and above using Biofeedback System and other detection equipments. The main factor of driver’s heart rate change was determined by partial correlation analysis using the binary regression growth model. The result shows that the driver’s heart rate change increases with the rising of the elevation,and growth rate of heart rate accelerates from an altitude of approximately 3 600 meters to higher altitudes. The driver ’s heart rate change also increases with the increasing of the slope gradient. The increasing of both uphill( positive) gradient and downhill( negative) gradient gave rise to the growth rate of heart rate. The driver ’s heart rate changed more distinctly under the joint effect of slope elevation and the gradient. The higher altitude and greater gradient of a slope,the greater growth rate of the heart rate will be.更多还原