面向LoRa自组网的交通监控系统设计  

Design of a Traffic Monitoring System for LoRa Ad Hoc Network

作　　者：白锌 齐瑞璇 高贝贝 BAI Xin;QI Ruixuan;GAO Beibei

机构地区：[1]沧州交通学院,河北沧州061100

出　　处：《科技创新与应用》2024年第27期26-32,共7页Technology Innovation and Application

基　　金：沧州市社会科学发展研究项目(2023262)。

摘　　要：为将LoRa无线通信技术应用在交通监控系统中,以提高交通监控系的灵活性和智能化,设计一种面向中心节点的自组网系统。该组网协议主要包括网络管理和数据上报2部分。网络管理实现节点入网、节点被动退网主动退网。为保证通信的时效性,数据上报环节设置多个通信信道。同时根据入网顺序,配置每个节点的数据上报窗口,保证数据的有序传输。对于硬件系统,采用STM32F103系列单片机作为主控,并利用SX1278芯片设计其对应的LoRa通信电路。最后通过实验对该系统进行测试,测试数据表明该系统可以灵活地对车辆检测节点进行自适应组网,而且通信时延满足通信模型要求,系统稳定性较高。In order to apply LoRa wireless communication technology to traffic monitoring system and improve traffic monitoring system flexibility and intelligence,a central node-oriented ad hoc network system is designed.Its networking protocol mainly includes two parts:network management and data reporting.Network management realizes node entry,node passive withdrawal and active withdrawal.In order to ensure the timeliness of communication,a number of communication channels are set up in the data reporting link.At the same time,according to the order of entering the network,the data reporting window of each node is configured to ensure the orderly transmission of data.For the hardware system,the STM32F103 series single-chip microcomputer is used as the main control,and the corresponding LoRa communication circuit is designed by using SX1278 chip.Finally,the system is tested by experiments,and the test data show that the system can flexibly network the vehicle detection nodes,and the communication delay meets the requirements of the communication model,and the system has high stability.

关 键 词：车辆监控系统 自组网 LoRa SX1278 STM32 

分 类 号：TN914.4[电子电信—通信与信息系统]