基于传感器网络的城市智能运输系统的构建

基于传感器网络构建城市智能运输系统，实现对城区交通的智能控制．设计了智能运输系统专用的传感器节点和相应的硬件结构，并编制了相应的软件，建立了一个城市交通系统的智能控制模型，实现道路交通流实时动态信息的采集、处理和发布，及路段的规模协调控制．使用Matlab软件对控制模型中的交通信息的处理进行了仿真，表明该智能运输系统模型能够投入交通控制的实际应用．与当前普遍采用的基于GPS技术构建的ITS系统相比，本系统具有更高的性价比、灵活性和控制效率．

Building of an Urban Intelligent Transportation System Based on Sensor Networks

An urban ITS(intelligent transportation system) is built based on sensor networks to realize traffic intelligent control.Special ITS sensor node and associated hardware structure are designed,appropriate software is compiled,and an intelligent control model for urban traffic system is built,so that real time traffic information can be collected and processed for information distribution as well as scale coordination and control for vehicle routing.Matlab software is employed to simulate traffic information processing in the modeled system.It is shown that the modeled ITS can be put into practical application.It is characterized with higher cost performance,flexibility and control efficiency,comparing with the current ITS system based on GPS(global position system).