疲劳驾驶时的车速变化特征  

Analysis of Velocity Changing Rules Under Driving Fatigue

作　　者：毛喆[1,2] 严新平[1,2] 吴超仲[1,2] 张晖[1,2] 黄德启[1,2] 

机构地区：[1]武汉理工大学智能交通系统研究中心,武汉430063 [2]武汉理工大学水路公路交通安全控制与装备教育部工程研究中心,武汉430063

出　　处：《北京工业大学学报》2011年第8期1175-1183,共9页Journal of Beijing University of Technology

基　　金：交通部西部研究课题资助项目(2007319811140);国家'八六三'计划资助项目(200611Z213)

摘　　要：通过驾驶模拟实验研究疲劳驾驶时的车速变化特征.模拟实验场景设计为单调的高速公路环境,有15名被试者参加实验,得到14组有效数据.实验实时采集了车速、加速度、车辆位置坐标及时间信息,采集频率为8Hz,并截取了3个不同线形路段上的数据进行分析.实验结果表明,疲劳驾驶时车速偏高,容易超速,但车速高低没有明显变化规律;车速标准差随疲劳程度上升有显著差异(α=0.05),疲劳时的车速标准差较小;疲劳驾驶时加速度频谱由低频成分为主逐渐转变为高频成分为主,或者加速度幅度和能量值显著减小.This paper focuses on the analysis of velocity changing rules when fatigue driving on a driving simulator. Monotonous highway environment is designed as the simulating scene, 15 drivers are invited to attend the simulating experiments and 14 sets of effective data are collected for analysis. Velocity, acceleration, vehicle location and time are recorded at 8 Hz on real time. Data from 3 different road alignments are chosen for analysis and the analysis result shows that the velocity is higher when fatigue driving and the driver tends to easily exceed speed limit but it shows no obvious rules for velocity variation, and the standard difference of velocity is lesser and the differences are significant at the 0.05 level. The main frequency component of acceleration is transferred from lower to higher and spectrum amplitude and energy reduces evidently.

关 键 词：疲劳驾驶 驾驶模拟实验 车速 加速度 频谱分析 

分 类 号：U698.6[交通运输工程—港口、海岸及近海工程]