Accurate aerial spraying control system and method for aircraft

Abstract

The invention relates to an accurate aerial spraying control system and method for an aircraft.The accurate aerial spraying control system for the aircraft comprises a controller, a droplet particle size control unit, an airborne weather measurement unit and an airborne altitude measurement unit.The controller is connected with the droplet particle size control unit, the airborne weather measurement unit and the airborne altitude measurement unit.The airborne weather measurement unit is used for acquiring information of the environment where the aircraft is located.The airborne altitude measurement unit is used for acquiring information of the altitude of the aircraft relative to ground.The controller is used for calculating a target value of the particle size of sprayed droplets according to the information of the environment and the information of the altitude and sending a control instruction to the droplet particle size control unit according to the target value.The droplet particle size control unit is used for adjusting the particle size of droplets according to the control instruction.By means of the accurate aerial spraying control system and method for the aircraft, accurate control over a droplet depositing area is achieved, and the particle size of droplets can be accurately regulated and controlled according to environmental requirements, so that the ground depositing effect of droplets is optimized, influences of attitude changes of the aircraft on spraying are overcome, and the aerial spraying effect is improved.

Description

technical field [0001] The invention relates to the technical field of plant drug spraying, in particular to an aircraft aviation precise spraying control system and method. Background technique [0002] The current aerial spraying control system is mainly based on foreign products, and the aerial spraying control system in my country is mostly composed of constant flow water pumps and nozzles, which cannot achieve precise spraying control. The more typical precision aerial spraying control system products in foreign countries are mainly the AG-FLOW product of Canada AGNAV company and the SatlocG4 product of Canada Hemisphere company. These two products mainly realize the control of the output flow of the drug pump according to the flight speed of the aircraft, so as to ensure the uniformity of the spraying on the ground under different flight speeds of the aircraft. [0003] The functions and system components of these two products are basically the same, generally includi...

AI Technical Summary

Problems solved by technology

[0004] The main disadvantage of the above-mentioned products is that it is impossible to carry out precise aerial spraying control, because compared with ground spraying, the distance between aerial spraying equipment and ground crop targets increases, which in turn increases the number of factors affecting the process of spray droplets reaching crop targets. Such as the wind direction and speed of the working environment, the relative distance between the working aircraft and the crop target, the target angle of the nozzle of the spraying equipment, the air temperature and relative humidity of the spraying working environment, etc.

For example, (1) When the spraying environment has a relatively large lateral wind relative to the spraying path, the fog droplets will drift under the action of the wind. If the drift distance cannot be accurately predicted, at least it will not be able to produce better pests and diseases The prevention and control effect will reduce the efficiency of agricultural spraying, and in severe cases, it will cause agricultural environmental pollution and endanger the safety of the surrounding ecosystem

(2) When the distance between the aircraft and the crops is relatively high, if the particle size of the droplets is too small, the ambient temperature is too high, and the relative humidity of the environment is too low, the droplets will volatilize in the air and cannot land on the crops, so that the spraying effect cannot be produced

(3) When the attitude of the aircraft is deflected, it will cause a large deviation in the spray direction

When the aircraft is flying horizontally, the fog droplets will be concentrated and deposited on the aircraft, but when the aircraft is turning around or turning, when the horizontal angle of its body changes greatly, the spray direction will also change, which makes the fog droplets unable to concentrate. deposited under the aircraft

Especially for large fixed-wing aircraft spraying, this problem is particularly serious

For this reason, in Northeast my country, the turning and turning areas of the fixed-wing aircraft must be artificially replenished when spraying pesticides, which seriously affects the operating efficiency.

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