The best time of the day to use pesticides, many drug sellers or agricultural technicians will tell you, is before 10:00 in the morning and after 4:00 in the evening. That's fine, but the problem is that the dew doesn't go down until seven or eight in the morning, and it comes up again at six or seven in the evening. In these short hours, how can the peasants, who have been planting land for ten or eight hours, fight? Does it take seven days to take a single dose? But the best time to take medicine is always a few hours, which is not enough.

Before the emergence of plant protection UAV, the traditional way of dispensing medicine has been used in agricultural field, which not only brings great harm to people, but also is difficult to achieve the desired effect. Nowadays, the emergence of plant protection UAV has effectively solved a series of problems in agricultural plant protection. UAV can work in the field with complex environment, saving time and labor, good effect, safe and convenient.

Plant protection UAV belongs to the super power aircraft, the working current is as high as tens of amperes. The power system, including battery, electric regulator and motor, will generate heat when working. If the temperature of components is too high, it will even cause failure. High temperature weather will undoubtedly worsen the working environment of the power system.
The higher the temperature and the lower the humidity, the faster the droplet evaporation speed, resulting in the decline of operation effect. At the same time, in the high temperature period, because of the high concentration and the strong activity of the drug, it is easier to produce pesticide damage. Therefore, from the perspective of operation effect, high temperature operation should also be avoided.
Plant protection UAV is a high-tech precision product, any small changes in its components will affect its flight status and service life. Summer is the season with the most frequent use of plant protection UAVs. However, summer is hot and humid, and the one-time operation time is relatively long. Therefore, in addition to operating and using the UAV in the correct way, daily maintenance and inspection are also essential.

After flight operation, the UAV shall be thoroughly inspected to find out the damage caused to the aircraft in use. Unlike manned aircraft, UAVs rarely take off and land on airport runways with good conditions. Due to the poor take-off and landing site conditions, UAV, especially the conventional takeoff and landing UAV, is very easy to cause local damage due to large impact during take-off and landing, and some structural damage is not easy to find from the appearance. Therefore, after each flight, the aircraft itself should be comprehensively and carefully inspected to discover and deal with hidden dangers in time.

Important equipment needs regular maintenance to avoid damage caused by long-term use. Power supply is also important. UAV has long flight time and strong environmental vibration, which requires high durability of battery pack. In the same way, the structure of UAV, especially the connecting part, is easy to be aged and damaged due to frequent disassembly and vibration impact, which is the key point in the maintenance process.
1. Precautions for battery charging
(1) When charging, it should be placed in a ventilated, direct sunlight and dry environment as far as possible.
(2) When charging, ensure that there are personnel present to avoid fire.
(3) The battery life will be reduced if the battery power drops below 15% for a long time.

(4) Do not soak the battery in water for heat dissipation.
(5) The charger produced by Hanhe aviation should be used to charge the battery to avoid the damage of unqualified charger to the battery. We will not be responsible for all the consequences caused by using the charger provided by the government.
Use three and raise seven. Behind every gorgeous lift off and smooth landing of UAV, the meticulous inspection and unremitting maintenance of the controller are indispensable. If you want to let the UAV fly in a broader sky, you need to settle down and be the "nanny" of UAV.