基于COFDM技术与MQTT协议的多旋翼无人机信号中继传输技术研究  

Research on Signal Relay Transmission Technology of Multi-Rotor UAV Based on COFDM Technology and MQTT Protocol

作　　者：张楚谦 郭景武 王星超 夏立伟 吴嘉琪 黄昱霖 周春晓 ZHANG Chuqian;GUO Jingwu;WANG Xingchao;XIA Liwei;WU Jiaqi;HUANG Yulin;ZHOU Chunxiao(Transmission Maintenance Center of State Grid Hubei EHV Company,Wuhan Hubei 430000,China)

机构地区：[1]国网湖北超高压公司输电检修中心,湖北武汉430000

出　　处：《湖北电力》2022年第4期120-124,共5页Hubei Electric Power

基　　金：国网湖北省电力有限公司超高压公司科技项目(项目编号:B715202200G4)。

摘　　要：我国目前架空输电线路困难之处在于其地处地形复杂地区,因地形等因素阻隔时常引起信号失联,在开展巡查任务时使用多旋翼无人机对于克服这一困难有很大帮助。项目采用COFDM技术的图传设备,将飞机端的高清视频流传送至地面端,该技术具备相对较强的穿透能力和绕射能力。在多模态信号一体化中继传输系统的多机联合巡检技术基础上,结合使用MQTT协议的多模态信号一体化中继传输系统,输电线路机巡作业能够“一控多机”、多机联合进行,实际困难可能迎刃而解。At present,the difficulty of overhead transmission line is that it is located in complex terrain area,and the obstruction of the terrain and other factors often cause signal loss.Using multi-rotor UAV for patrol mission is of great help in overcoming this problem.This project adopts COFDM technology image transmission equipment to stream the high-definition(HD)video from the aircraft to the ground.This technology has relatively stronger penetration ability and diffraction ability.On the basis of the joint inspection technology of multi-modal signal integrated relay transmission system,and combined with the multi-modal signal integrated relay transmission system,with MQTT protocol utilized,the machine patrol operation on transmission line can be carried out in“one control for multiple machines”,and thus the practical difficulties.

关 键 词：COFDM MQTT协议 多模态 中继传输 无人机 输电线路 

分 类 号：TM63[电气工程—电力系统及自动化]