GPS-based unmanned aerial vehicle variable-rate spraying control device and method

A technology of unmanned aerial vehicles and flight control, which is applied in the field of variable control and agricultural aviation plant protection machinery and equipment. It can solve the problems of difficult operation, complicated process, and difficulty in obtaining good spray effects, and achieve stable spray width and droplet size. uniform effect
CN107264804AInactive Publication Date: 2017-10-20SOUTH CHINA AGRI UNIV
4 Cites 24 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA AGRI UNIV
Publication Date
2017-10-20
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a GPS-based unmanned aerial vehicle variable-rate spraying control device and method. The device comprises a flight control subsystem, a sensing acquisition subsystem, a flow control subsystem and a power supply module. The sensing acquisition subsystem is connected with the flight control subsystem and the flow control subsystem separately. The power supply module supplies power for the flight control subsystem, the sensing acquisition subsystem and the flow control subsystem. The method is implemented in a way that the flow values corresponding to flight speeds are taken as the given values through an integral separation PID control strategy, then a single chip microcomputer outputs corresponding PWM signals to change the rotation speeds of a diaphragm pump, and thus the flows are changed; and the PID control strategy refers to that the flows of nozzles are detected by flow sensors, the process variables and the set values are constantly compared, and the flow of the pump is constantly corrected and controlled, so as to improve the control precision. The PWM technology is adopted to adjust the diaphragm pump, to realize the control that the flows change along with the speeds, and an intelligent variable-rate spraying control system high in efficiency, good in stability and low in cost is formed.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the research field of agricultural aviation plant protection machinery equipment and variable control technology, in particular to a GPS-based variable spray control device and method for an unmanned aerial vehicle. Background technique

[0002] Variable-variable spraying is an important way to realize precision pesticide application technology in the field of agricultural aviation. The variable spray technology can automatically adjust the spray volume according to the operation speed, crop density and pest damage degree, which not only saves pesticides, but also reduces pesticide residues in agricultural products and environmental pollution. It is an important development direction of pesticide application technology. Variable spray application can be realized by changing spray time, spray pressure and liquid concentration. PWM technology to adjust the water pump to achieve flow control is a method of variable spray time. Co...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More