Methods and devices for controlling unmanned aerial vehicle

1. A method of controlling an unmanned aerial vehicle (UAV), comprising:

obtaining meteorological data in a current location of the UAV when the UAV is in a first flight state, wherein the first flight state represents one of a steady flight state and a take-off preparing state of the UAV;

determining a flight hazard level of the UAV based on the meteorological data, wherein the flight hazard level represents a hazard level caused to a flight of the UAV by weather; and

controlling the UAV to switch to a second flight state when the flight hazard level is a first preset level, wherein the first preset level represents a level where the UAV cannot fly safely and the second flight state represents one of an emergency flight state and a take-off suspended state of the UAV,

wherein determining the flight hazard level of the UAV based on the meteorological data comprises:

computing a meteorological hazard index in the current location of the UAV based on the meteorological data;

determining whether the meteorological hazard index is greater than a first preset threshold;

determining the flight hazard level as the first preset level when the meteorological hazard index is greater than the first preset threshold; and

determining the flight hazard level as a second preset level when the meteorological hazard index is smaller than or equal to the first preset threshold, and wherein the second preset level represents a level where the UAV can fly safely.

2. The method according to claim 1 , wherein determining the flight hazard level of the UAV based on the meteorological data comprises:

computing the meteorological hazard index in the current location of the UAV based on the meteorological data; and

determining the flight hazard level corresponding to the meteorological hazard index by inquiring into a preset list, wherein the preset list records the flight hazard level and the meteorological hazard index corresponding to the flight hazard level.

3. The method according to claim 1 , further comprising:

controlling the UAV to work in the steady flight state or the take-off preparing state when the flight hazard level is determined as a second preset level.

4. The method according to claim 1 , wherein obtaining meteorological data in the current location of the UAV comprises:

locating the current location of the UAV via a GPS; and

accessing a network server to obtain the meteorological data in the current location and within a predetermined surrounding area.

5. The method according to claim 1 , wherein obtaining meteorological data in the current location of the UAV comprises:

receiving a meteorological indication message sent by a user terminal; and

analyzing the meteorological indication message to obtain the meteorological data in the current location of the UAV.

6. The method according to claim 1 , wherein controlling the UAV to switch to the second flight state comprises:

determining a target location when the UAV works in the second flight state;

determining a flight path of the UAV based on the current location and the target location; and

controlling the UAV to fly according to the flight path.

7. A device of controlling an unmanned aerial vehicle (UAV), comprising:

a processor;

a memory configured to store an instruction executable by the processor;

wherein the processor is configured to:

obtain meteorological data in a current location of the UAV when the UAV is in a first flight state, wherein the first flight state represents a steady flight state or a take-off preparing state of the UAV;

determine a flight hazard level of the UAV based on the meteorological data, wherein the flight hazard level represents a hazard level caused to a flight of the UAV by weather; and

control the UAV to switch to a second flight state when the flight hazard level is a first preset level, wherein the first preset level represents a level where the UAV cannot fly safely and the second flight state represents an emergency flight state or a take-off suspended state of the UAV,

wherein the processor is configured to determine the flight hazard level of the UAV based on the meteorological data, by acts of:

computing a meteorological hazard index in the current location of the UAV based on the meteorological data;

determining whether the meteorological hazard index is greater than a first preset threshold;

determining the flight hazard level as the first preset level when the meteorological hazard index is greater than the first preset threshold; and

determining the flight hazard level as a second preset level when the meteorological hazard index is smaller than or equal to the first preset threshold, and wherein the second preset level represents a level where the UAV can fly safely.

8. The device according to claim 7 , wherein the processor is configured to determine the flight hazard level of the UAV based on the meteorological data, by acts of:

computing the meteorological hazard index in the current location of the UAV based on the meteorological data; and

determining the flight hazard level corresponding to the meteorological hazard index by inquiring into a preset list, wherein the preset list records the flight hazard level and the meteorological hazard index corresponding to the flight hazard level.

9. The device according to claim 7 , wherein the processor is further configured to:

control the UAV to work in the steady flight state or the take-off preparing state when the flight hazard level is determined as a second preset level.

10. The device according to claim 7 , wherein the processor is configured to obtain meteorological data in the current location of the UAV, by acts of:

locating the current location of the UAV via a GPS; and

accessing a network server to obtain the meteorological data in the current location and within a predetermined surrounding area.

11. The device according to claim 7 , wherein the processor is configured to obtain meteorological data in the current location of the UAV, by acts of:

receiving a meteorological indication message sent by a user terminal; and

analyzing the meteorological indication message to obtain the meteorological data in the current location of the UAV.

12. The device according to claim 7 , wherein the processor is configured to control the UAV to switch to the second flight state, by acts of:

determining a target location when the UAV works in the second flight state;

determining a flight path of the UAV based on the current location and the target location; and

controlling the UAV to fly according to the flight path.

13. A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of a terminal, causes the terminal to perform a method for controlling an unmanned aerial vehicle (UAV), the method comprising:

obtaining meteorological data in a current location of the UAV when the UAV is in a first flight state, wherein the first flight state represents a steady flight state or a take-off preparing state of the UAV;

determining a flight hazard level of the UAV based on the meteorological data, wherein the flight hazard level represents a hazard level caused to a flight of the UAV by weather; and

controlling the UAV to switch to a second flight state when the flight hazard level is a first preset level, wherein the first preset level represents a level where the UAV cannot fly safely and the second flight state represents an emergency flight state or a take-off suspended state of the UAV,

wherein determining the flight hazard level of the UAV based on the meteorological data comprises:

computing a meteorological hazard index in the current location of the UAV based on the meteorological data;

determining whether the meteorological hazard index is greater than a first preset threshold;

determining the flight hazard level as the first preset level when the meteorological hazard index is greater than the first preset threshold; and

determining the flight hazard level as a second preset level when the meteorological hazard index is smaller than or equal to the first preset threshold, and wherein the second preset level represents a level where the UAV can fly safely.

14. The non-transitory computer-readable storage medium according to claim 13 , wherein determining the flight hazard level of the UAV based on the meteorological data comprises:

computing a meteorological hazard index in the current location of the UAV based on the meteorological data; and

determining the flight hazard level corresponding to the meteorological hazard index by inquiring into a preset list, wherein the preset list records the flight hazard level and the meteorological hazard index corresponding to the flight hazard level.

15. The non-transitory computer-readable storage medium according to claim 13 , wherein the method further comprises:

controlling the UAV to work in the steady flight state or the take-off preparing state when the flight hazard level is determined as a second preset level.

16. The non-transitory computer-readable storage medium according to claim 13 , wherein obtaining meteorological data in the current location of the UAV comprises:

locating the current location of the UAV via a GPS; and

accessing a network server to obtain the meteorological data in the current location and within a predetermined surrounding area.

17. The non-transitory computer-readable storage medium according to claim 13 , wherein obtaining meteorological data in the current location of the UAV comprises:

receiving a meteorological indication message sent by a user terminal; and

analyzing the meteorological indication message to obtain the meteorological data in the current location of the UAV.