【作者】 李建；

【导师】 陈启美； 阮雅端；

【作者基本信息】 南京大学 ， 集成电路工程（专业学位）， 2015， 硕士

【摘要】 当前,交通传感网/物联网风起云涌,检测、挖掘、汇聚、发布等各种新技术应用应接不暇。在执行《公路交通传感网信息检测·挖掘·汇聚·发布与辅助决策示范系统》(省科技厅重大项目,编号:BE2011822)等项目过程中,有必要系统归纳交通传感网系统的技术体系、多元传感、信息汇聚、海量数据挖掘等技术,并加以规范研究,以促进省域ITS迅速健康发展。论文结合美国国家交通顶层设计NTCIP、欧盟SAFESPOT智能交通系统、国际道路论坛ROADIDEA,描述了我国的交通传感网现状。论文阐述了交通传感网技术体系:1)技术体系架构,包括功能模块、网络分层结构、数据分层流向;2)ITS传感网信息分析,包括用户主体与信息需求、交通信息定义与分类、特点、层次等;3)交通传感信息采集;4)网络平台与汇聚细化接入等。比较分析了新近发展的交通传感技术:1)多元传感;2)视觉传感;3)激光传感;4)无线射频识别;5)定位感知等。解析了通信网络技术:1)网络平台层次结构;2)通信模块;3)无线接入协议;4)DSRC等专用无线技术;5)CALM接口。介绍了传感网信息数据分析技术:1)交通信息定义与分类;2)ITS传感网的用户主体及需求;3)基础交通信息的特点;4)交通信息需求层次;5)ITS云平台技术与大数据技术。设计了交通视频专网QoS与故障定位测试系统方案,针对复杂异构网络环境中故障定位难的问题,提出了具有三个维度参数的改进故障代码书故障定位算法,引入了后项节点距离前项节点的故障事件发生时间点的相对时间,以实现故障快速定位,解决了传统代码书无法处理的环形关联关系(A→B→C→A)问题。论文主要创新点在于:●归纳阐述了ITS传感网技术体系与应用架构,明确其逻辑、物理架构,及安全保障体系方案;●分析比较了多元传感技术,如:雷达传感技术、红外传感技术、分布式光纤传感检测技术、无线射频识别技术、激光轮廓检测技术、视觉传感技术、定位感知技术等,描述了这些新技术和新方法在交通信息化和智能化中的应用场景与应用方法;●提出了复杂异构网络环境中故障定位的方案。采用代理技术,分析视频专网服务质量(QOS),构建了交通视频专网QoS与故障定位测试系统。该系统采用视频QoS阈值完成故障事件检测,以实现视频监控质量评估与网络故障的快速定位。更多还原

【Abstract】 Currently,the traffic sensor network is raging like a storm.Detection,mining,gathering,publishing and other new technologies are being overwhelmed.In the implementation of "The demonstration system based on the detection,mining,gathering and publishing of the highway traffic sensor network information and assistant decision "(province Science and Technology Agency major projects,NO:process BE2011822)and other projects,it is necessary to systematically summarize traffic sensor network technical system,multi-sensing,information gathering,massive data mining techniques.Thus,it will promote provincial ITS development fast and healthily.The thesis combined with top-level design of the US national transportation communication interconnect protocol NTCIP,EU intelligent transportation system SAFESPOT and international road forum ROADIDEA.The thesis also described the research situation of our country’s traffic sensor network.The thesis described the traffic sensor network technology system:1)Technical architecture,including functional modules,network hierarchy and hierarchical data flow;2)ITS sensor network information analysis,including user subject,information needs,definition,classification,characteristics and level of traffic information;3)Traffic sensor information collection;4)The network platform and convergence refinement access technology and so on.The thesis compared and analyzed the newly developed transport sensing technology:1)multi-sensing;2)visual sensing;3)laser sensing;4)radio frequency identification;5)location-aware and so on.The thesis resolved the communication network technology:1)network platform hierarchy;2)communication modules;3)wireless access protocol;4)DSRC and other private wireless technologies;5)CALM interface.The thesis introduced the sensor network information data analysis techniques:1)the definition and classification of traffic information;2)the user subject and the needs of ITS sensor network;3)the characteristics of basic traffic information;4)Traffic Information Requirement level;5)ITS Cloud platform technology and Big Data technologies.The thesis designed traffic video intranet QoS and fault location test system solutions.Considering the difficulty of fault location in the complex and heterogeneous network,proposed an improved codebook algorithm for fault location which has three dimensions parameters,introduced the relative time,to realize rapid fault location,to solve the annular relationship(A→B→C→A)problems that the traditional codebook cannot handle.The major contributions of this thesis are as follows:●Proposed ITS sensor network technology system and its’ application framework with a clear logical and physical architecture.Also,a security system scheme is provided;●For multi-sensor technology,such as:radar sensor technology,infrared sensing technology,distributed fiber optic sensing technology,radio frequency identification technology,laser contour detection technologies,visual sensor technology and location-aware technology.Proposed these new technology scenarios and application methods in intelligent traffic system;●Considering the difficulty of fault location in the complex and heterogeneous network,using agent technology,analyzed video network quality of service(QoS),built a traffic intranet video QoS and fault location test system.The system achieved evaluation of video monitoring quality and network fault positioning.更多还原