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中国农机化学报

中国农机化学报 ›› 2024, Vol. 45 ›› Issue (9): 178-183.DOI: 10.13733/j.jcam.issn.2095-5553.2024.09.027

• 农业信息化工程 • 上一篇    下一篇

丘陵山地果园行间运输车自动跟随系统研究

郑拓 1,2,袁丽峰 1,2,戚得众 1,2,闫行行 1,2,杨文广 1,2   

  1. (1.湖北省农业机械工程研究设计院,武汉市,430068; 2.湖北省农机装备智能化工程技术研究中心,武汉市,430068)
  • 出版日期:2024-09-15 发布日期:2024-09-04
  • 基金资助:
    湖北省重点研发计划(2020BBB063);湖北省农机装备补短板核心技术应用攻关项目(HBSNYT202208)

Research on automatic following system of inter-row transporter in hilly and mountainous orchards

Zheng Tuo1,2,Yuan Lifeng1,2,Qi Dezhong1,2,Yan Xingxing1,2,Yang Wenguang1,2   

  1. (1. Hubei Agricultural Machinery Engineering Research and Design Institute,Wuhan,430068,China;2. Hubei Provincial Agricultural Machinery Equipment Intelligent Engineering Technology Research Center,Wuhan,430068,China)
  • Online:2024-09-15 Published:2024-09-04

摘要:

针对当前丘陵山地地区果园机械智能化程度低、采摘和运输过程效率低的问题,设计一种基于自研履带式运输车的自动跟随方法,采用基于 AOA(入射方向角)的定位原理,利用 UWB双基站定位技术,由两基站接收电子标签信号,获得其方向角。并通过扩展卡尔曼滤波法计算出电子标签的准确位置,实现运输车对标签的精确定位跟随。在 MATLAB中仿真分析,结果表明扩展卡尔曼滤波-AOA定位法平均距离误差为 0. 21 m,平均角度误差为 1. 45°。在平地和丘陵果园两种工况下做试验验证,结果表明:两种工况下平均距离误差均小于 30 cm,证明该方法满足自动跟随需求。

关键词: 履带式运输车, 自动跟随, 双基站定位技术, 入射方向角, 扩展卡尔曼滤波

Abstract:

Aiming at the problems of low degree of mechanical intelligence and low efficiency of picking and transportation process in hilly and mountainous areas,this paper designs an automatic following method based on self.developed crawler transporter, adopts the positioning principle based on AOA(angle of incidence), and uses UWB dual base station positioning technology to receive the electronic tag signal and obtain its direction angle. And by extending the Kalman filter method,the accurate position of the electronic tag is calculated to realize the precise positioning and following of the tag by the transport vehicle. In the simulation analysis in MATLAB,it is concluded that the average distance error of the extended Kalman filter-AOA positioning method is 0. 21 m and the average angle error is 1. 45°. The results show that the average distance error is less than 30 cm under the two working conditions of flat land and hilly orchard,which proves that the proposed method meets the requirements of automatic following.

Key words: tracked transporter, automatic following, dual base station positioning technology, angle of incidence direction, extended Kalman filtering

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