Automatic obstacle avoidance method of unmanned aerial vehicle (UAV)

An automatic obstacle avoidance and unmanned aerial vehicle technology, applied in non-electric variable control, instruments, control/regulation systems, etc., can solve the problems of reducing battery usage time, increasing usage costs, and increasing overall energy consumption, achieving cost savings, The effect of accurate obstacle avoidance and safe flight process

Pending Publication Date: 2018-04-06
GUANGZHOU WALKERA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the infrared obstacle avoidance method set by the UAV in the prior art is unreasonable, and there are many defects, so that in many cases, the obstacle avoidance failure occurs in the process of automatic obstacle avoidance through infrared, resulting in damage to the UAV and user loss. Some technologies add GPS positioning, optical flow positioning, and acoustic wave positioning on the basis of infrared obstacle avoidance, which greatly increases the cost of use, and the use of multiple devices also increases the overall energy consumption and reduces battery usage. time

Method used

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  • Automatic obstacle avoidance method of unmanned aerial vehicle (UAV)
  • Automatic obstacle avoidance method of unmanned aerial vehicle (UAV)
  • Automatic obstacle avoidance method of unmanned aerial vehicle (UAV)

Examples

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Effect test

Embodiment 1

[0050] like figure 1 As shown, a UAV automatic obstacle avoidance method, the UAV includes a UAV body and an infrared sensor, the front side and the left and right sides of the UAV body are equipped with infrared sensors, and the UAV body is equipped with an infrared sensor. The drone is provided with an automatic mode, a one-key return mode, a manual mode and a motion mode, and the automatic obstacle avoidance of the drone is carried out in the automatic mode or the one-key return mode, and the obstacle avoidance method of the drone includes the following steps:

[0051] S1: Turn on the automatic mode of the drone or the one-key return mode;

[0052] S2: The infrared sensor detects the distance between the UAV and surrounding obstacles;

[0053] S3: UAV automatically avoids obstacles.

[0054] Further, such as figure 2 As shown, in the step S1, the automatic mode includes the hovering state of the automatic mode, and when the drone is in the hovering state of the automati...

Embodiment 2

[0062] The difference between this embodiment and Embodiment 1 is that when the drone is in the hovering state of the automatic mode, in the step S2, the infrared sensors on the front side and the left and right sides of the drone detect obstacles When the object distance is less than 0.8m, the UAV flies in the opposite direction and automatically avoids obstacles.

[0063] The automatic deceleration step of the UAV is that when the infrared sensors on the front side and / or left and right sides of the UAV detect that the obstacle distance is less than 8m, the UAV automatically decelerates.

[0064] Further, such as image 3 As shown, the step of stopping the unmanned aerial vehicle is that when the infrared sensors on the front side and / or left and right sides of the unmanned aerial vehicle detect that the distance from the obstacle is less than 4m, the unmanned aerial vehicle stops advancing.

[0065] Further, the automatic ascending step of the UAV is that when the infrared...

Embodiment 3

[0067]The difference between this embodiment and Embodiment 1 is that the automatic ascending step of the UAV is that when the infrared sensor on the front side of the UAV detects that the distance between the obstacle and the obstacle is less than 7m, the UAV first automatically ascends. When the infrared detector in front continues to monitor until there is no obstacle in front, stop ascending and continue to fly forward. When encountering an obstacle again, the same infrared sensor on the front detects that the distance between the obstacle and the obstacle is less than 7m. The aircraft starts to rise automatically again. At this time, when the infrared detector in front continues to monitor that there is no obstacle in front, it stops rising, continues to fly to the home position, and finally reaches above the home point, and then descends vertically to the home point.

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Abstract

Provided is an automatic obstacle avoidance method of a UAV. The UAV comprises a UAV body and infrared sensors, the infrared sensors are arranged in the front, left and right sides of the UAV body, the UAV includes automatic, one-key return flight, manual and moving modes, and automatic obstacle avoidance of the UAV is implemented in the automatic or one-key return flight mode. The automatic obstacle avoidance method of the UAV comprises the following steps that S1) the automatic or one-key return flight mode of the UAV is started; S2) the infrared sensors detect the distance between the UAV and an obstacle in the surrounding; and S3) the UAV avoids the obstacle automatically. According to the invention, the infrared sensors are arranged in the side surfaces where collision tends to occur,the risk of collision of the UAV can be reduced, and a flight process is safer and more stable. The flight modes are classified so that the UAV can adopt different obstacle avoidance methods according to the different modes, the obstacle avoidance process is simplified, and the obstacles can be avoided accurately in the different modes.

Description

technical field [0001] The patent of the present invention belongs to the technical field of automatic control methods and devices for unmanned aerial vehicles, and in particular relates to an automatic obstacle avoidance method for unmanned aerial vehicles. Background technique [0002] Thanks to the advancement of sensors, actuators, processors and other technologies and the reduction of related costs, combined with the advantages of this part, it is possible to build semi-automatic and fully automatic multi-rotor aircraft. The research on UAV control technology is one of the hotspots of domestic and foreign UAV R&D companies, universities, and research institutions, such as pocket UAVs, autonomous avoidance and dancing UAVs, etc., which make UAVs miniaturized , intelligence, and automatic control precision have reached a very high level, and the existing drones are also widely used in military, civilian and other fields, such as self-portrait and synchronous sending to Mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D1/10
CPCG05D1/101
Inventor 罗之洪李奔夏烨罗强
Owner GUANGZHOU WALKERA TECH CO LTD
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