项目名称: 基于移动云模型的车载传感网交通突发事件分发算法研究
项目编号: No.51308057
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 建筑科学
项目作者: 李雪
作者单位: 长安大学
项目金额: 25万元
中文摘要: 利用车载传感网高效地分发并使交通参与者实时获知交通突发事件信息,可有效缓解交通拥堵、避免二次事故发生。针对现有车载传感器网络节点移动模型在节点状态估计方面的局限性,将基于云理论构建适合现实道路约束及环境因素的地图匹配算法和节点移动云模型,设计交通事件分发的高效路由算法,最终实现实时的交通事件分发。本课题以城市道路交通为背景,研究方法以理论和实验并重,拟提出融合道路约束的全局地图匹配算法, 实现对VSN节点移动轨迹高精度估计;提出能有效预测VSN节点移动状态的多维移动云模型,并用于表征节点移动策略及移动规律;提出VSN节点信息转发效用模型及高效的VSN路由算法,通过节点试制和实验,实现交通突发事件数据实时收集和分发。研究成果将为实时动态交通流分配提供理论依据,为交通疏导提供智能的辅助决策,具有十分重要的科学意义和应用价值。
中文关键词: 车载传感网;地图匹配;移动云模型;交通事件分发;
英文摘要: Vehicular Sensor Networks is one of the most effective means to distribute the traffic incident information. The real-time traffic incident information distributing can alleviate traffic congestion and avoid the secondary accident efficiently. According to the limitation of the node mobility models and node state estimation in Vehicular Sensor Networks, we construct the realistic path and environmental constraint map matching algorithm and node mobile cloud model based on the cloud theory, and design the efficient routing algorithm to achieve the real-time distribution of traffic incident information. The main research contents include Proposed the global map matching algorithm combining the road constraint, to realize the high precision trajectory estimation of VSN mobile node;Proposed the multidimensional cloud model which can effectively predict the mobile VSN node mobile state ,to characterize the node mobility strategy and movement rules;Proposed the VSN node information forwarding utility model and routing algorithm, to achieve real-time traffic incident information collection and distribution. The results will provide a theoretical basis and aid decision making for real-time dynamic traffic assignment and traffic dispersion. It has important science significance and application value.
英文关键词: vehicle sensor network;map matching;mobile cloud model;traffic incident distributing;