The Researching Of Agricultural Plant Protection System Based On Six Rotor Unmanned Aerial Vehicle

With the demand of precision agriculture,the traditional agricultural plant protection mode is unable to meet the current needs because of its low efficiency and high pesticide residues,so it is necessary to study the new plant protection mode.The technology of unmanned aerial vehicle(UAV)in China has just started,and a complete set of technical solutions has not been formed.This paper proposes a method of automatic spraying of plant protection UAV,and relies on the data management system of agricultural plant protection to realize the dispatch and performance of plant protection task.Based on the research of six rotor UAV agricultural plant protection system,it effectively solves the problems of low efficiency of artificial spraying,high pesticide residue,imperfect plant protection data and low efficiency of the UAV plant protection.The specific contents are as follows:First of all,According to the design requirements,A six rotor plant protection UAV is designed.The main contents include the design of the whole structure,the estimation of the maximum take-off weight,the design and installation of power system,external circuit of flight control unit,the body of the fuselage and the control system of pesticide and so on.Secondly,a multiple sorties path planning algorithm is designed,when UAV can not be used to spray that the area of farmland is large,which it is by constructing the equation of the relationship between the position coordinates of the UAV and the total distance of the plant protection,and the recursive inequality of the pesticide spraying amount on each plant of UAV,the particle swarm optimization(PSO)algorithm is used to optimize the return position of the UAV,which shortens the time of plant protection for the UAV.A single route planning algorithm is designed for UAV in a small area,which it is by constructing the function relation of coordinate transformation,The total flight distance of the UAV is obtained separately under the parallel conditions of the route and the polygon farmland,then,the route corresponding to the minimum flight distance is the best route,which reduces the energy consumption of the UAV and improves the efficiency of the plant protection.In order to realize the single route planning algorithm applied to the flight of the UAV,a path planning software is designed and it can automatically output the trajectory of the points in the model of the single path planning algorithm according to the user's setting of the plant protection parameters.At last,the data management system of agricultural plant protection is designed in view of the confusion of the data of plant protection,and the low efficiency of operation.the platform is based on the B/S structure,using the MVC design pattern and the SSH framework,which has the advantages of good coupling and extensibility.The platform realizes the order task management and plant protection data persistence to MySQL database by JSP,and displays it to users in various forms,improving the management efficiency of plant protection team.