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为研究前车突然切入对驾驶人生理负荷的影响,利用MP150生理监测系统对22名被试进行虚拟驾驶试验。采集记录前车突然切入时被试的生理参数。研究驾驶人心率增长率和心率变异性(HRV)指标与车速、应激距离之间的关系。结果表明:自车速度为100 km/h时,随着前车切入距离从55.6 m减小到27.8 m,被试的平均心率增长率从16.21%增大到23.27%,HRV参数低频(LF)值也呈现下降趋势。前车切入距离一定,随着自车车速从60 km/h增加到120 km/h,被试的平均心率增长率存在显著性差异,平均从13.05%上升到21.85%。差异性检验结果表明,前车切入距离和自车速度发生变化时驾驶人的生理负荷变化趋势一致,但自车速度因素对驾驶人生理负荷的影响程度高于切入距离因素。
In order to study the impact of the sudden incursion of the front vehicle on the driver's physiological load, a virtual driving test was conducted on 22 subjects using the MP150 physiological monitoring system. Acquisition of record before the car suddenly cut into the subjects when the physiological parameters. To study the relationship between driver heart rate growth rate and heart rate variability (HRV) and vehicle speed and stress distance. The results showed that the average rate of increase of heart rate increased from 16.21% to 23.27% with the car cutting distance from 55.6 m to 27.8 m at vehicle speed of 100 km / h. The HRV parameters of low frequency (LF) The value also shows a downward trend. The car-in distance of the front car was constant. As the car speed increased from 60 km / h to 120 km / h, there was a significant difference in the average heart rate growth rate from 13.05% to 21.85%. The results of variance test showed that the change trend of driver's physiological load was consistent when the vehicle's cutting-in distance and vehicle speed changed, but the influence of vehicle speed on driver's physiological load was higher than the cut-in distance.