How to judge whether the operation effect of agricultural drones is good or bad?


The question that farmers are concerned about when using agricultural drones is whether the operation effect is good? Can they kill insects in time? If they don’t just want to do "one-hammer business", they will pay more attention to the operation effect of agricultural drones. So what is the basis for judging whether the operation effect of agricultural drones is good? Next, the editor will teach you how to judge the basis for whether the operation effect of agricultural drones is good or not. The specific content is as follows:

The first thing we want to talk about is the problem of drug selection. Whether the pesticide itself is of high quality or not, and whether the pesticides suitable for flight prevention are used will directly affect the operation effect. In addition, the pesticide application history, pesticide resistance, temperature, soil and other growth environments of crops and the time of pesticide application all have a greater impact.

In addition, regardless of external factors, from a technical point of view, what kind of agricultural drone can be called good in operation? Generally speaking, we can measure it from the following four aspects:

1. Spraying coverage: Can it be sprayed to get the pesticide in place?

What is to hit the pesticide in place? In fact, in the process of plant protection, pesticides should be sprayed on the front and back of crop leaves, and the drugs should be attached to the leaves in order to effectively kill pests.

Whether the agricultural drone can hit the pesticide in place depends on the down-pressure wind field and the atomization effect.

Spraying with traditional sprayers often fails to reach the back of the leaves of the crops. When the UAV flies over, it brings a strong down-pressure wind field, which can blow the blade over, so that the medicine can be attached to the back of the blade.

But sometimes the wind field is too large, which will cause waste of medicine and damage to crops. If the aircraft nozzle is not designed properly, there will be turbulence during the flight. The airflow generated by the propeller will roll up the liquid medicine, causing the liquid medicine to drift, and it may even adhere to the aircraft.

2. Spraying accuracy: Can it be sprayed evenly, so that the target area can be evenly sprayed?

At present, there are two main types of spraying technologies for agricultural drones on the market, one is constant spraying technology, and the other is variable spraying technology.

Agricultural drones need to turn when flying in the field, and generally slow down when turning. If it is a constant spraying technology, the flow rate will not be automatically adjusted as the flight speed slows down, which may cause excessive spraying of crops at the turning point of the field , will produce phytotoxicity and waste pesticides.

With the drone using variable spraying technology, the flow rate can be reduced as the flight speed slows down, so as to ensure that the amount of pesticide applied to every inch of farmland is equal and achieve a good spraying effect.

3. Can heavy spraying and missed spraying be avoided?

Heavy spraying and missed spraying will cause great damage to crops, especially chemical control agents such as herbicides. Spraying too much will cause phytotoxicity, and spraying too little will have no effect.

To avoid heavy spraying and missed spraying, agricultural drones need to be able to achieve high-precision flight. For agricultural drones that are operated purely manually, the pilot relies on visual observation to judge the route, and the human factor is too large to fly.

4. Can it adapt to different working hours and various terrains?

Many pests are nocturnal, and the effect of spraying during the day is poor; especially in summer, when the temperature is high at noon, the spraying is easy to volatilize and affect the efficacy, which requires agricultural drones to be able to work at night. Nighttime operations have high requirements for route planning systems and obstacle avoidance systems, which can only be achieved by drones capable of fully autonomous flight and fully automatic operations.

Some farmlands have uneven surfaces, or some crop canopies have different heights. To ensure the spraying effect, plant protection drones need to be able to adapt to various terrains and maintain a relatively constant distance from the crop canopy. Currently, drones can achieve this through ground-following flight technology.

UAVs that cannot fly in imitation of the ground, when operating on uneven crop canopies, short-crown crops may have poor pesticide application effect due to the distance from the UAV. In addition, the height change of the terrain, especially the elevation, may cause the drone to collide and break.

Through the above analysis, if farmers want to judge whether the plant protection effect of drones used in their fields is good, it is suggested that they can spray accurately, evenly, without heavy spraying, whether they can work at night, and adapt to various terrains. aspect to investigate