摘要
基于试验数据,分析使用车载导航系统对驾驶员脑力负荷的影响,以及任务难度、时间压力、驾驶经验、性别差异等因素在该任务中的实际影响效果。通过编程模拟驾驶员使用车载导航系统进行驾驶的任务,采取主任务评价法作为脑力负荷的评价方法。选取偏离正确路线的次数、偏离的水平位移、到达预定目标所用时间、偏离方向的次数、根据导航系统提示完成相应动作的反应时间5个参数作为评价指标,选取40名大学生作为被试完成主任务(追踪)和辅任务(使用车载导航系统的脑力工作)。对试验数据进行比较分析,结果表明,车载导航系统的使用在一定程度上加大了驾驶员的脑力负荷,并随驾驶难度的增加而加剧。任务难度、工作时间及驾驶经验等因素都对使用车载导航系统的驾驶员的脑力负荷产生影响,而性别差异的影响并不明显、
The paper is aimed to introduce our analysis of the influential factors of drivers＇ mental workload when operating the vehicle navigation system on the basis of the experimental data, such as the influence of task complexity, working time, driving experience and sex difference. In proceeding with our research, we have simulated the driving task with a vehicle navigation system through programming. The system interface consists chiefly of driveway display panel, driving panel and the navigation panel. The primary task evaluation method was used to evaluate drivers＇ mental workload by using the vehicle navigation system. Once the primary task evaluation indexes were defined, such as the frequency of deviating from the correct line, horizontal displacement of deviation, time spent on reaching the target, frequency of deviating from the correct guide, the reaction time to complete the corresponding actions according to the navigation system. In our experiments, we have chosen 40 college students as subjects to complete the primary task and the secondary task. The experimental results of the subjects were divided into group A, B, C and D. Whereas the data of Group A are the experimental ones of 20 male college students, Group B belong to the experimental data of 20 female college students. While Group C are the experimental data of 20 experienced college students, Group D would be the experimental data of 20 inexperienced ones. And, similarly, if the primary task was tracing, the secondary task should be about using the vehicle navigation system. Here we have to compare the experimental data of the four groups and analyze them according to the vehicles deviated from the correct route and the driver＇s response, etc. The results show that the vehicle navigation system can increase the drivers＇ mental workload to a certain extent, and this change will be growing up with the increase of the driving difficulty. Some factors will affect the drivers＇ mental workload with the use of vehicle navigation system, such as task complexity, working time and driving experience, though the influence of sex difference doesn＇t seem to be so significant.
出处
《安全与环境学报》
CAS
CSCD
北大核心
2011年第6期202-204,共3页
Journal of Safety and Environment
关键词
交通运输安全工程
脑力负荷
车载导航系统
模拟试验
traffic and transportation safety engineering
mental workload
vehicle navigation system
simulation experiment
