阅读说明：本技术 一种应用于无人机的高空抛投瞄准方法及系统、存储介质 (High-altitude throwing aiming method and system applied to unmanned aerial vehicle and storage medium ) 是由 田瑜 于 2020-04-02 设计创作，主要内容包括：本发明涉及无人机技术领域,公开了一种应用于无人机的高空抛投瞄准方法及系统、存储介质。所述方法包括：在无人机到达目标位置的上空定点悬停时,采集所述无人机当前的倾角和高度信息；根据所述倾角,计算得到当前的风速和风向；根据所述风速、风向和所述高度,估算抛投物品的实际抛投位置与所述目标位置的偏移量,所述偏移量包括偏移方位和偏移距离；根据所述偏移量控制所述无人机调整悬停位置,使得调整后所述运载物品的实际抛投位置与所述目标位置重合。本发明实施例可预先计算抛投物品下落时会产生的偏移量,据此偏移量对无人机的悬停位置进行微调,从而使得调整后运载物品能够准确抛投至目标位置。(The invention relates to the technical field of unmanned aerial vehicles, and discloses a high-altitude throwing aiming method and system applied to an unmanned aerial vehicle and a storage medium. The method comprises the following steps: when the unmanned aerial vehicle reaches the overhead fixed-point suspension of the target position, acquiring the current inclination angle and height information of the unmanned aerial vehicle; calculating to obtain the current wind speed and wind direction according to the inclination angle; estimating the offset of the actual throwing position of the throwing object and the target position according to the wind speed, the wind direction and the height, wherein the offset comprises an offset azimuth and an offset distance; controlling the unmanned aerial vehicle to adjust the hovering position according to the offset, so that the actual throwing position of the carrying object is coincided with the target position after adjustment. According to the embodiment of the invention, the offset generated when the thrown goods fall can be calculated in advance, and the hovering position of the unmanned aerial vehicle is finely adjusted according to the offset, so that the adjusted carried goods can be accurately thrown to the target position.)

1. The high-altitude throwing aiming method applied to the unmanned aerial vehicle is characterized by comprising the following steps of:

when the unmanned aerial vehicle reaches the overhead fixed-point suspension of the target position, acquiring the current inclination angle and height information of the unmanned aerial vehicle;

calculating to obtain the current wind speed and wind direction according to the inclination angle;

estimating the offset of the actual throwing position of the carried object and the target position according to the wind speed, the wind direction and the height, wherein the offset comprises an offset azimuth and an offset distance;

controlling the unmanned aerial vehicle to adjust the hovering position according to the offset, so that the actual throwing position of the carrying object is coincided with the target position after adjustment.

2. The high-altitude throwing aiming method applied to unmanned aerial vehicles according to claim 1, further comprising:

acquiring ground image information covering the target position in real time;

and displaying the ground image information, and identifying the target position and the offset in the ground image information.

3. The high-altitude tossing and aiming method applied to the unmanned aerial vehicle as claimed in claim 1, wherein the offset y is estimated by the following method: y ═ a ═ w²H; wherein w is the wind speed, h is the height, and a is a coefficient.

4. The utility model provides a be applied to high altitude toss sighting system of unmanned aerial vehicle which characterized in that includes: a sensor unit, a flight control calculation unit, an offset calculation unit, and a position adjustment control unit;

the sensor unit is used for acquiring the current inclination angle and height information of the unmanned aerial vehicle when the unmanned aerial vehicle arrives at the overhead fixed-point suspension of the target position;

the flight control calculation unit is used for calculating and obtaining the current wind speed and the current wind direction according to the inclination angle;

the offset calculation unit is used for estimating the offset of the actual throwing position of the carried object and the target position according to the wind speed, the wind direction and the height, and the offset comprises an offset direction and an offset distance;

and the position adjusting control unit is used for controlling the unmanned aerial vehicle to adjust the hovering position according to the offset, so that the actual throwing position of the carrier object is coincided with the target position after adjustment.

5. The high altitude tossing aiming system applied to unmanned aerial vehicle of claim 4, further comprising: a camera and an image display unit;

the camera is used for acquiring ground image information covering the target position in real time;

the image display unit is used for displaying the ground image information and identifying the target position and the offset in the ground image information.

6. The high altitude tossing and aiming system applied to unmanned aerial vehicles according to claim 4, wherein the offset calculation unit is specifically configured to calculate the offset according to the formula y ═ a × w²H estimating the offset y; wherein w is the wind speed, h is the height, and a is a coefficient.

7. The high altitude tossing aiming system applied to unmanned aerial vehicle as claimed in claim 4, further comprising a photoelectric pod unit for mounting the camera so that the camera is always perpendicular to the ground.

8. A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of any of claims 1 to 3 when applied to a method for sighting at high altitude a projectile of a drone.

Technical Field

The invention relates to the technical field of unmanned aerial vehicles, in particular to a high-altitude throwing aiming method and system applied to an unmanned aerial vehicle and a storage medium.

Background

The unmanned plane is called unmanned plane for short, and is an unmanned plane operated by radio remote control equipment and a self-contained program control device. The machine has no cockpit, but is provided with an automatic pilot, a program control device and other equipment. The personnel on the ground, the naval vessel or the mother aircraft remote control station can track, position, remotely control, telemeter and digitally transmit the personnel through equipment such as a radar.

Along with the popularization of unmanned aerial vehicles, the unmanned aerial vehicles are used for forest fire prevention, emergency rescue and the like. When the unmanned aerial vehicle is used for carrying out the throwing work, the throwing object needs to be accurately thrown at a target place, and the following two ways are generally adopted for realizing the throwing work:

1) the method comprises the steps of collecting images by using a ground camera and a wireless image transmission function, transmitting the images to the ground in real time, and throwing the carried articles to a target place after identifying that the center of the images is aligned to the target place.

2) And controlling the unmanned aerial vehicle to fly above the coordinate point according to the known GPS coordinate of the target location, and then throwing the carrying article to the target location.

The two methods are not problematic in a low-altitude environment, but in a high-altitude environment, the carried goods are easily influenced by air flow to shift from a target place during falling, and the higher the throwing height is, the farther the goods shift is, and finally the target task cannot be completed. For example, when a fire extinguishing bomb is thrown in fire fighting applications such as forest fire prevention, in order to ensure that the fire extinguishing bomb can cover a wider area after being exploded in the air, the throwing height of the fire extinguishing bomb is required to be not less than 100m, and at this time, if the fire extinguishing bomb is thrown according to the above manner, the fire extinguishing bomb will be influenced by air flow greatly and deviate from a target place, and finally a good fire extinguishing effect cannot be achieved.

Disclosure of Invention

The invention aims to provide a high-altitude throwing aiming method and system applied to an unmanned aerial vehicle and a storage medium, and solves the problem that in the prior art, objects are easily influenced by air flow to deviate from a target place during high-altitude throwing.

In order to achieve the purpose, the invention adopts the following technical scheme:

a high-altitude throwing aiming method applied to an unmanned aerial vehicle comprises the following steps:

when the unmanned aerial vehicle reaches the overhead fixed-point suspension of the target position, acquiring the current inclination angle and height information of the unmanned aerial vehicle;

calculating to obtain the current wind speed and wind direction according to the inclination angle;

estimating the offset of the actual throwing position of the carried object and the target position according to the wind speed, the wind direction and the height, wherein the offset comprises an offset azimuth and an offset distance;

controlling the unmanned aerial vehicle to adjust the hovering position according to the offset, so that the actual throwing position of the carrying object is coincided with the target position after adjustment.

Optionally, the method further includes:

acquiring ground image information covering the target position in real time;

and displaying the ground image information, and identifying the target position and the offset in the ground image information.

Optionally, the estimation method of the offset y includes: y ═ a ═ w²H; wherein w is the wind speed, h is the height, and a is a coefficient.

A high altitude tossing aiming system applied to unmanned aerial vehicles comprises: a sensor unit, a flight control calculation unit, an offset calculation unit, and a position adjustment control unit;

the sensor unit is used for acquiring the current inclination angle and height information of the unmanned aerial vehicle when the unmanned aerial vehicle arrives at the overhead fixed-point suspension of the target position;

the flight control calculation unit is used for calculating and obtaining the current wind speed and the current wind direction according to the inclination angle;

the offset calculation unit is used for estimating the offset of the actual throwing position of the carried object and the target position according to the wind speed, the wind direction and the height, and the offset comprises an offset direction and an offset distance;

and the position adjusting control unit is used for controlling the unmanned aerial vehicle to adjust the hovering position according to the offset, so that the actual throwing position of the carrier object is coincided with the target position after adjustment.

Optionally, the method further includes: a camera and an image display unit;

the camera is used for acquiring ground image information covering the target position in real time;

the image display unit is used for displaying the ground image information and identifying the target position and the offset in the ground image information.

Optionally, the offset calculating unit is specifically configured to calculate the offset according to the formula y ═ a × w²H estimating the offset y; wherein w is the wind speed, h is the height, and a is a coefficient.

Optionally, the device further comprises a photoelectric pod unit for mounting the camera so that the camera is always perpendicular to the ground.

A storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the steps of any of the above methods for high altitude projectile aiming at a drone.

Compared with the prior art, the embodiment of the invention has the following beneficial effects:

according to the embodiment of the invention, the wind speed and the wind direction are estimated by utilizing the attack angle generated by wind resistance of the unmanned aerial vehicle during hovering, the offset generated when the carried article of the unmanned aerial vehicle falls is calculated through the wind speed, the wind direction and the height, and the hovering position of the unmanned aerial vehicle is finely adjusted according to the offset, so that the adjusted carried article can accurately fall to the target position.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a flowchart of a high-altitude tossing and aiming method applied to an unmanned aerial vehicle according to an embodiment of the present invention;

fig. 2 is a diagram of an example of high-altitude tossing aiming provided by the embodiment of the invention.

Detailed Description

In order to make the technical solutions of the embodiments of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without any creative efforts shall fall within the protection scope of the embodiments of the present invention.

In embodiments of the present invention, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The core idea of the invention is as follows: utilize the angle of attack that unmanned aerial vehicle anti-wind produced when hovering to estimate wind speed and wind direction, through wind speed, wind direction and the high offset that can produce when calculating unmanned aerial vehicle's delivery article (for example fire extinguishing bomb) whereabouts, finely tune unmanned aerial vehicle's hover position in view of the above offset to make the adjustment back delivery article can accurately fall to the target location.

Referring to fig. 1-2, an embodiment of the present invention provides a high-altitude tossing and aiming method applied to an unmanned aerial vehicle, including the steps of:

step 101, collecting current inclination angle and height information of the unmanned aerial vehicle when the unmanned aerial vehicle reaches the overhead fixed-point suspension of the target position.

In this step, unmanned aerial vehicle can arrive the sky of target location according to following two kinds of modes, include:

firstly, images are collected in real time by using a ground camera and a wireless image transmission function and are transmitted to the ground, a route reaching a target position is planned on the ground according to the images, and an unmanned aerial vehicle is controlled to fly above the target position according to the route.

And secondly, controlling the unmanned aerial vehicle to fly above the coordinate point according to the acquired GPS coordinate of the target position.

When unmanned aerial vehicle fixed point suspends, if windy blow, then unmanned aerial vehicle will form an inclination and resist the windage, and this inclination and wind speed are directly proportional, and the direction is unanimous with the wind direction, consequently according to the inclination information of gathering, will discern current wind speed and wind direction.

And 102, calculating to obtain the current wind speed and wind direction according to the inclination angle.

And 103, estimating the offset of the actual throwing position of the carrying object and the target position according to the wind speed, the wind direction and the height information, wherein the offset comprises an offset direction and an offset distance.

Illustratively, the estimation method of the offset y is as follows: y ═ a ═ w²H; wherein w is the wind speed, h is the height, and a is the coefficient.

And 104, controlling the unmanned aerial vehicle to adjust the hovering position according to the offset, so that the actual throwing position of the carrier object after adjustment is coincident with the target position.

And 105, after fine adjustment of the hovering position, controlling the unmanned aerial vehicle to toss the carrying object.

It should be noted that, the high-altitude tossing and aiming method of the embodiment may further include the steps of: acquiring ground image information covering a target position in real time; the ground image information is displayed and the target location and offset are identified in the ground image information. Thus, the quick and accurate fine adjustment can be conveniently carried out by personnel on the ground.

Another embodiment of the present invention further provides a high-altitude tossing and aiming system applied to an unmanned aerial vehicle, including: the device comprises a sensor unit, a flight control calculation unit, an offset calculation unit and a position adjustment control unit.

And the sensor unit is used for acquiring the current inclination angle and height information of the unmanned aerial vehicle when the unmanned aerial vehicle arrives at the overhead fixed point suspension of the target position.

And the flight control calculation unit is used for calculating and obtaining the current wind speed and the current wind direction according to the inclination angle.

And the offset calculation unit is used for estimating the offset of the actual throwing position of the carrying object and the target position according to the wind speed, the wind direction and the height, and the offset comprises an offset direction and an offset distance.

And the position adjusting control unit is used for controlling the unmanned aerial vehicle to adjust the hovering position according to the offset, so that the actual throwing position of the carrier object after adjustment coincides with the target position.

Based on the system, the adverse effect of the air flow can be effectively reduced, and the carried objects thrown at high altitude can accurately land to the target position to achieve the target task.

In addition, the high-altitude tossing aiming system of the embodiment can further comprise a camera, an image display unit and a photoelectric pod unit.

And the camera is used for acquiring ground image information covering the target position in real time.

And the photoelectric pod unit is used for mounting the camera, so that the camera is always perpendicular to the ground to obtain high-quality ground image information and facilitate subsequent identification and analysis.

And the image display unit is used for displaying the ground image information and identifying the target position and the offset in the ground image information.

It should be noted that the sensor unit, the flight control calculation unit, the camera and the photoelectric pod unit are mounted on the unmanned aerial vehicle, the offset calculation unit, the position adjustment control unit and the image display unit can be arranged in a terminal device (such as a mobile phone, a computer and the like) on the ground, and a user controls the position fine adjustment operation of the unmanned aerial vehicle. In practical application, the offset calculation unit and the position adjustment control unit can also be directly installed in the unmanned aerial vehicle, and the unmanned aerial vehicle automatically calculates the offset and carries out corresponding position fine adjustment. The implementation principle of both is completely the same, so the present invention is not limited to this.

An example of an application is provided below:

referring to fig. 2, in forest fire prevention, an unmanned aerial vehicle needs to carry a fire extinguishing bomb to fly to a position 100m above a fire point to throw the fire extinguishing bomb, the fire extinguishing bomb explodes in front of a quick contact ground, and fire extinguishing powder is sprayed to a fire source to achieve the purpose of fire extinguishing.

Specifically, the flyer flies to the top of catching a fire point at ground remote control unmanned aerial vehicle, through aiming at the fire source to the ground camera slightly, treats that unmanned aerial vehicle stabilizes the back, flies to control the computational element and passes through the height and the inclination that the sensor unit obtained unmanned aerial vehicle this moment, sends for ground station software through wireless transmission module. After ground station software calculates the skew position and the distance when fire extinguishing bomb whereabouts in real time, show ground image information to use the cross to aim at the position of star mark play skew, ground operating personnel finely tune unmanned aerial vehicle this moment and make it aim at the burning things which may cause a fire disaster, then throw the fire extinguishing bomb, the explosion of department at the burning things which may cause a fire disaster this moment of the fire extinguishing bomb, successfully put out a fire.

It will be understood by those skilled in the art that all or part of the steps of the method for aiming at high altitude tossing applied to a drone may be implemented by instructions, or related hardware controlled by the instructions, which may be stored in a computer-readable storage medium and loaded and executed by a processor.

To this end, the embodiment of the present invention further provides a storage medium, in which a plurality of instructions are stored, where the instructions can be loaded by a processor to execute the steps in the high-altitude tossing and aiming method for the unmanned aerial vehicle provided by the embodiment of the present invention.

Wherein the storage medium may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.

The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.