摘要
车辆信息采集是智能交通核心技术之一。现行的无线地磁传感器系统多采用ZigBee技术作为低功耗局域网技术、GPRS作为广域网技术。针对现行无线传输技术的功耗与距离不能兼顾问题,本文设计了一种基于LoRa技术的无线地磁传感器车辆检测系统。在网关节点上直接添加LoRa模块,釆用LoRa传输技术建立的交通信息系统在城市道路的有效传输距离可达公里级,可以组建无线地磁传感器网络,保证远距离和低功耗的兼顾,取消额外的中继。本文所述系统具有结构简单、成本低、检测精度高、传输距离远等优势。如分组建网,可以将道路交通车辆信息采集网络扩大到整个城市,保证大面积覆盖、全方位发挥作用,是精准、实时、高效的智能交通管理系统。
Vehicle information collection is one of the core technologies of intelligent transportation.The current wireless geomagnetic sensor systems mostly use ZigBee technology as low-power LAN technology,GPRS as WAN technology.Aiming at the problem that the current wireless transmission technology can't give consideration to both power consumption and distance.This paper designs a wireless geomagnetic sensor vehicle detection system based on LoRa technology.LoRa module is added directly to the joint of the network.The effective transmission distance of the traffic information system based on LoRa transmission technology can reach kilometer level on the urban road.The wireless geomagnetic sensor network can be built to ensure the consideration of long distance and low power consumption and cancel the additional relay.The system has simple structure,low cost and inspection.It has the advantages of high precision and long transmission distance.For example,grouping network can expand the road traffic vehicle information collection network to the whole city,can play a role in a wide range,all-round,is a real-time,accurate and efficient intelligent traffic management system.
作者
侯群
葛迪
邱程
陈岩
周晨
HOU Qun;GE Di;QIU Cheng;CHEN Yan;ZHOU Chen(Jianghan University,Wuhan 430056,China)
出处
《电视技术》
2019年第3期88-91,共4页
Video Engineering
基金
武汉市科技局项目(2017010201010124)
湖北省教育厅创新团队项目(T201828)
关键词
智能交通
地磁传感器
LoRa
车辆检测
无线网络技术
intelligent traffic
geomagnetic senor
LoRa
vehicle flow detection
wireless network technology
