摘要
针对交通系统中移动的流量监测和查询应用,提出了一种基于ZigBee标准的无线传感器网络智能交通系统设计,以提供一个弹性和高效的无线参考解决方案。给出的体系结构考虑节点的异构性,将系统中的节点分为MS、VS和SN 3种不同角色。设计中给出了包括初始化过程的详细路由算法。为了加快信息的响应速度,设计了一种基于预测的路由转发机制。VS节点接收来自SN的数据,基于MS的移动性信息计算MS位置并确定路由。此外,VS缓存请求数据机制进一步优化了结果。实验表明与现存同类方法相比,所提方案能有效加快数据获取速度,在延迟方面具有显著提升。
An intelligent transportation system using ZigBee-based Wireless Sensor Network is designed for mobile traffic-related data query that provides a flexible and efficient wireless solution. Considering nodes' heterogeneity,the elements in the system are identified as MS, VS and SN. The detailed routing algorithm as well as its initialization phase is presented. In order to accelerate response speed, a routing strategy with prediction is introduced. After receiving the packets from SNs, VS computes the target VS base on gathered mobility information. In addition, a data- cashing mechanism is utilized to further optimize the results. Compared with the existing mechanism for the same ap- plication scenario, the proposed solution demonstrates better scalability and less delivery latency.
出处
《传感技术学报》
CAS
CSCD
北大核心
2013年第12期1747-1751,共5页
Chinese Journal of Sensors and Actuators
基金
国家自然科学基金项目(61170021)
高等学校博士学科点专项科研基金项目(20103201110018)
苏州市应用基础研究项目(SYG201240)
江苏省研究生创新计划项目(CXZZ12_0817)
优秀博士论文选题项目(23320216)