| In the 21st century,precision agriculture has become a new development direction of world agriculture.The technology and equipment of foreign precision agriculture have become mature increasingly,but the speed of development on domestic agricultural production equipment is slow.The domestic agricultural spraying vehicles have been in the development stage of self-propelled spraying vehicles,the operation mode of this spray car requires the operator’s operation.So it’s so difficult to avoid direct contact with pesticides during operation,and that would make the operator poison.This will not only seriously affect the health of the operator,but also would put them into danger of life.Due to the need for real-time control of the operator,this will bring a lot of labor to the operator.In order to reduce the probability of the poisoning of the operator and reduce the amount of labor,the use of non-contact wireless remote control operation has become the new development direction of agricultural spraying vehicle.In order to solve this problem,this paper has developed a remote control system for agricultural vehicles based on the research of Wifi remote communication,OpenWrt and Android remote operating system.The operation mode of non-contact wireless remote control is realized through using a tablet to remotely control the operation.There are several technical issues that need to be analyzed and addressed.The first is to let farmers observe the scene in the farmland.The second is to operate the high-centre of the agricultural vehicles by remote turn control,and maintain the balance.In this paper,the above problems are studied in depth and described in detail:(1)On the basis of analyzing the structure of agricultural medicine,two degrees of freedom and three degrees of freedom are established,and the influence of agricultural vehicle parameters on turning performance was analyzed by Matlab simulation.(2)The fuzzy PID control algorithm and neural network algorithm are researched in detail,and the control strategy is made by combining the three degrees freedom agricultural car turning control model,and the feasibility of control strategy is proved by Simulink test.(3)The remote control platform construction was completed based on the Android operating system and OpenWrt operating system.Besides,this paper deals with the problems generated in remote image transmission,finishes the upper and lower computer programming,and uses image processing technology to solve the problem of signal interference. |