基于视点移动速度的视认距离确定方法  

A Method of Determining Visual Recognition Distance Based on the Moving Speed of Gaze Point

作　　者：黄琴龙[1] 梁家豪 张芳燕 HUANG Qinlong;LIANG Jiahao;ZHANG Fangyan

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]山西省交通运输安全应急保障技术中心(有限公司),山西太原030032

出　　处：《上海公路》2022年第2期79-84,M0006,共7页Shanghai Highways

摘　　要：视认距离法是研究隧道入口行车安全的重要研究方法。基于驾驶员正常驾驶中,不同眼动行为的区别,利用眼动仪采集的视点坐标,提出了一种确定实车实验中视认距离的方法。利用典型实验数据,通过视点坐标的速度变化,确定开始发现障碍物的时刻,即开始视认的时刻。通过眼动仪前置摄像头视频,确定障碍物经过驾驶员的时刻。两时刻作差,得出从发现障碍物到经过障碍物的时间,乘车辆匀速行驶的速度,得出视认距离。该方法充分利用了眼动仪的视点采集技术,为研究自然驾驶实验中的驾驶员视认行为,提供了新的研究方法。Visual recognition distance method is an important research method to study the driving safety at the tunnel entrance.Based on the differences of different eye movement behaviors of drivers,a method to determine the visual recognition distance in real vehicle experiment is proposed by using the viewpoint coordinates collected by eye movement instrument.In the natural driving experiment,this method first needs to ensure that the vehicle can drive at a uniform speed,and determine the time when the obstacle is found,that is,the time when the visual recognition begins,through the speed change of the viewpoint coordinates.The time is recorded when the obstacle passes through the driver through the video of the front camera of the eye tracker.The time from finding the obstacle to passing the obstacle is obtained by making a difference between the two moments,and the visual recognition distance is obtained by the speed of the vehicle.This method makes full use of the viewpoint acquisition technology of eye tracker,and provides a new research method for studying the driver’s visual recognition behavior in natural driving experiment.

关 键 词：隧道入口安全 眼动行为 视点移动速度 视认距离 

分 类 号：U458[建筑科学—桥梁与隧道工程]