Matching algorithm for plant protection drone spraying parameters

Foreword

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To achieve precise application and ensure the spray effect, accurate setting of the spray parameters is essential. Some drone manufacturers exaggerate the performance of their products, which is ok in publicity, but in the actual spraying operation, it is easy to cause misleading, and thus hurt the operation effect. Ineffective work, even if the efficiency is higher, one thousand acres a day, there is no point.

Plant protection drone spray parameter matching algorithm


Parameters that must be clear before the job

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[effective spray width]

The effective spray width refers to the width of the spray under the premise that the sprayed water mist is uniform, has no drift, and has sufficient penetrating power. It should be noted that the effective spray width of the aircraft is constant and has little effect on the flight height. This is because if the flight height of an aircraft is higher, the larger the spray width, the less the standard spray width of the aircraft is designed, and the sprayed water mist must be uneven. For example, when a plane is flying at a height of 3 meters, the spray width is 5 meters, when the flight height is 5 meters, the spray width is 8 meters, and when the flight height is 10 hours, the spray width is 10 meters. Such a spray must be uneven, and the specific reason will be understood by everyone. . Then, qualified manufacturers must give the standard recommended value: the standard spray width at the standard flight altitude. For example: Demi 10 aircraft, at a standard flight altitude of 3 meters, the standard spray width is 5 meters. At standard height, the distance between several nozzles of the aircraft, the spray angle of the nozzle, the effect of the airflow of the aircraft, etc. are all determined. It is possible to ensure that the spray is uniform along the plane, and it is possible to ensure The degree of drift of the spray is within a reasonably acceptable range. This is the effective spray width. The effective spray width of the Demi 10 aircraft can reach 5 meters, because the wheelbase is close to 4 meters, and the flow field width of the compressed air flow exceeds 5 meters.


[Acreage per acre]

According to the needs of different crops, the amount of water per acre is different. This parameter is also determined before spraying. For example, for the spraying of prevention and control, it is also possible to meet the requirements of 600~800ml of water per acre. However, for herbicides and defoliants, full coverage is required, and the amount of water per acre may need 1L or even 1.2L. This parameter should be determined according to the actual situation. Our suggestion is that the amount of water will be slightly larger, ensuring that the effect of drug fight is the first. Don't simply pursue high concentration and simply pursue a quick fight.


[Acreage per acre]

This is an independent parameter depending on the crop, growth stage, pest and disease level, and pesticide manufacturer's recommendations. No matter how much the amount is used per acre, it can be matched with the amount of water per acre and the potion can be exchanged. At this time, it should be noted that some medicines such as powders, if the amount of water is not too small, the amount of drug per acre is relatively large, which may lead to insufficient dissolution of the drug, further leading to poor application of the drug. At this time, the amount of water per acre should be further increased.


[effective medicine box volume]

The actual medicine tank volume given by the plant protection drone manufacturer. Everyone should pay attention to the fact that some aircraft, the volume given by the manufacturer is the maximum volume, such as 15L, but in actual operation, the possibility of filling 15L may result in insufficient flight capacity or insufficient battery, which may be due to local altitude. The height causes a drop in air density which in turn leads to a drop in the flight performance of the aircraft. In any case, the actual drug loading of the aircraft at the current altitude, current ambient temperature, and current aircraft conditions should be determined. This cartridge volume is the effective volume.


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