基于PX4构建高可靠农用微小型无人机数据链的实现方法

摘要

Agricultural Mini-UAV is playing a greater role in precision agriculture and is becoming the new focus of the agricultural machinery industry.The reliability of the agricultural Mini-UAV data link is the key factor that affects its stability.The redundancy switching system of radio modem and the quality testing system of radio communication are de-signed in this paper to improve and test the reliability of the agricultural Mini-UAV data link.The two systems are based on PX4 project on data link platform constructed by 3DR and Q Ground Control.This paper mainly introduced the struc-ture and principle of the two systems.The redundancy switching system of radio modem has passed tests to improve the reliability of the agricultural Mini-UAV data link.%农用微小型无人机在精准农业中的作用日益重要，正在成为农机行业新的亮点和热点。农用微小型无人机数据链的可靠性是影响其稳定运行的关键因素，本文针对农用微小型无人机数据链，选用PX4开源飞控，以3 DR电台和QGroundControl 地面站搭建的数据链设备为平台，设计了数传电台冗余切换系统及相应的电台联机质量测试系统，分别来提高和检测数据链的可靠性。同时，主要介绍了冗余切换系统的结构和原理及电台联机质量测试系统的结构和原理，并进行了相应的测试。测试结果表明：该方法能有效地提高农用微小型无人机数据链的可靠性。