How do drones play in winter?

? How to better use the UAV in extremely cold environment

1) battery insulation

2) personnel insulation

3) on-site operation instructions

1) battery insulation

According to reports, insulation is the most important work when using the UAV in extremely cold conditions. Without insulation measures, the battery life of the UAV will plummet, and it can support the battery that flies for 15 minutes at ordinary times. In order to use UAV in extremely cold environment, the team of Zhang Yi, Li Bo and Liu Zhonghua specially designed a battery incubator, the main purpose of which is to keep the UAV battery at a constant temperature, and to save preheating time so that it can be used at any time. The box is equipped with batteries for heating to maintain a constant temperature of 35 degrees. In addition, it is equipped with an air circulation system to keep the temperature of each battery uniform. This kind of incubator is very suitable for the environment that cars can't reach, and it is also very convenient to carry. At present, it can be said to be an original battery insulation equipment in China.

(original shape of battery insulation equipment for unmanned aerial vehicle)

(Small box can hold so many batteries and cables)

(The bottom is equipped with a heating plate, which can be connected to the battery through internal cables for insulation, and can also discharge the battery of unmanned aerial vehicle. )

However, it should be noted that even with such perfect insulation measures, the UAV can't fly into the sky with the incubator, and the endurance of the UAV in extremely cold winter is still lower than that in normal environment, so don't take it lightly.

2) flying hand insulation

? If the battery is not kept warm, the battery life will be short. If the flying hand is not kept warm, will it be short? . Although this sentence is a joke, it also reflects the severe challenges faced by the flying hand in extremely cold environment. If the flying hand does not do a good job of heat preservation, let alone can't operate the drone safely, it is difficult to guarantee its own health. In the working area of the flying hands on the hillside of the snow field, Zhang Yi and others showed the global drone reporter a model dubbed? Big pants? Our hand insulation equipment, this specially customized equipment is made of waterproof material, with lithium battery heater inside, which can be carried as a bag at ordinary times. Because the operation of the drone is very fine, it is impossible to manipulate the rocker flexibly when wearing gloves, and it is easy to freeze in the cold wind when taking off gloves. Therefore, this equipment can be called a major outdoor operation of the drone in winter? Magic weapon? When in use, you can put your hands, remote controller and mobile phone into the bag and observe them through the plastic cloth, which can not only keep the temperature of the remote controller and mobile phone, but also prevent your hands from frostbite.

　(? Big pants? Heat preservation equipment for hands and remote control)

3) How to use

The battery life of unmanned aerial vehicles will be reduced to varying degrees in winter flight, so we can't stick to the battery life on paper. According to reports, when flying hands operate drones in winter, once they take off, it is best not to stop landing halfway, but to use up the power as much as possible in one flight, otherwise it will seriously affect the endurance and flight safety of the aircraft, and it is likely to crash halfway. Caused adverse effects. The reason is determined by the characteristics of the battery. When the UAV takes off, its battery has the highest voltage and the most full charge. If it lands in the middle, the temperature will drop suddenly, which will seriously affect the performance of the battery, thus reducing the battery life and making the flight unpredictable.

According to another introduction, if the temperature is not very cold, for example, when it is about 5 degrees above zero, it is also possible to hover for about 1 minute after the drone takes off, and let the battery self-heat to preheat before flying.

not long ago, a self-developed four-axis unmanned aerial vehicle (UAV) which was still in the testing stage was inexplicably out of control several times during its flight test in a low temperature environment. After studying the flight data of the UAV, it was found that it was not the UAV itself but the potentiometer of the remote controller. The so-called potentiometer refers to the device for detecting displacement in the rocker of the remote controller, which will expand with the change of temperature and contract with the cold, which may lead to poor contact, thus leading to the loss of control of the aircraft.

Many flying hands have encountered similar problems in the cold environment before, and most of them thought that there was something wrong with the drone or the pan/tilt, and rarely thought that it was the fault of the remote control. Therefore, to operate a drone in extremely cold conditions, it is necessary not only to do a good job of heat preservation of equipment such as batteries, but also to keep the temperature of the remote controller. ?

As a sophisticated technology product, UAV has different usage methods and precautions in different environments.