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| 移动交通检测系统中探测车的样本数量 | |
| 引用本文： | 张存保,杨晓光,严新平.移动交通检测系统中探测车的样本数量[J].中国公路学报,2007,20(1):96-101. |
| 作者姓名： | 张存保 杨晓光 严新平 |
| 作者单位： | 1. 同济大学,道路与交通工程教育部重点实验室,上海,200092;武汉理工大学,智能交通系统研究中心,湖北,武汉,430063 2. 同济大学,道路与交通工程教育部重点实验室,上海,200092 3. 武汉理工大学,智能交通系统研究中心,湖北,武汉,430063 |
| 基金项目： | 国家重点基础研究发展计划(973计划);国家自然科学基金 |
| 摘 要： | 基于各国移动交通检测系统中探测车样本数量问题的研究现状,分析了现有成果存在的不足。在考虑探测车速度、计算时间间隔、数据精度要求等因素基础上,针对交通流密度均匀分布和非均匀分布两种情况,利用数理统计方法建立了道路网上探测车样本数量的双层模型。结果表明:当计算时间间隔为5 min时,若道路网上交通流密度均匀分布,则探测车比例至少为5.0%;若道路网上交通流密度非均匀分布,则探测车比例至少为7.0%。 |
| 关 键 词： | 交通工程 移动交通检测系统 数理统计方法 探测车 样本数量 |
| 文章编号： | 1001-7372（2007）01-0096-06 |
| 收稿时间： | 2006-05-21 |
| 修稿时间： | 2006-05-21 |
Probe Vehicles Sample Size for Mobile Traffic Detection System |
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| ZHANG Cun-bao,YANG Xiao-guang,YAN Xin-ping.Probe Vehicles Sample Size for Mobile Traffic Detection System[J].China Journal of Highway and Transport,2007,20(1):96-101. | |
| Authors: | ZHANG Cun-bao YANG Xiao-guang YAN Xin-ping |
| Institution: | 1. Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 200092, China; 2. ITS Research Center, Wuhan University of Technology, Wuhan 430063, Hubei, China |
| Abstract: | On the basis of researches on the world-wide probe vehicles sample size for mobile traffic detection system,authors analyzed shortcomings of existing products.Aimed at the conditions of uniform and non-uniform distribution of traffic flow density,using mathematical statistics method,bi-level sample size model of probe vehicles sample size on road network was established which took into account probe vehicle speed,calculation time interval and data precision.The result shows that if calculation interval is 5 min and traffic flow density is uniform on road network,probe vehicles proportion should be at least 5.0%.Otherwise,it should be at least 7.0%. |
| Keywords: | traffic engineering mobile traffic detection system mathematical statistical method probe vehicle sample size |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |