Portable folding unmanned aerial vehicle aerial survey ground image control point device

Abstract

The utility model discloses a portable folding type unmanned aerial vehicle aerial survey ground image control point device which comprises three positioning plates forming an image control point device body, the positioning plates are all of a rectangular structure, the two sides, perpendicular to each other, of one positioning plate are hinged to the other two positioning plates respectively to form the image control point device body of an L-shaped structure, and the image control point device body of the L-shaped structure is connected with the three positioning plates of the L-shaped structure. The other two positioning plates can be wound on the positioning plate along the hinge point and overlapped with the positioning plate, any one of the three positioning plates is provided with a coding plate, and the image control point device body of the L-shaped structure is further provided with a plurality of fixing holes connected with the ground. The portable positioning plate is simple in structure, meets the requirement for aerial survey of ground image control points of an unmanned aerial vehicle, can be folded into the size of a single positioning plate when not in operation, greatly reduces the space required for transportation, is convenient for operators to carry, is unfolded into a flat plate structure when in operation, is provided with a plurality of fixing holes, and is convenient to firmly fix on various uneven grounds; and the aerial survey precision and accuracy are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of aerial photogrammetry, and in particular relates to a portable foldable unmanned aerial vehicle aerial survey ground image control point device. Background Art

[0002] With the continuous development of aerial photogrammetry technology, drone aerial surveying has been involved in multiple surveying fields. It can quickly generate topographic maps, two-dimensional plane maps and three-dimensional stereo maps through aerial surveying, and has gradually replaced traditional photogrammetry methods. As a low-altitude remote sensing acquisition system, drones are widely used in fields such as land and resources monitoring. However, with the continuous deepening of related research and application fields, higher requirements are placed on the accuracy of drone aerial survey data. In particular, in the field of aerial surveying, a certain number of image control points need to be deployed in the drone flight area. Through precise ground measurement of the image control points, the drone aerial survey data can be calibrated to improve the accuracy of drone aerial survey operations.

[0003] At present, surveying workers generally complete the arrangement of image control points by spraying marks on the ground, or use paper image control point marks for arrangement. There are irregularities in the laying of paper image control point marks, and adverse weather conditions will cause the laid paper marks to become loose and unstable, which can easily lead to substandard internal data processing accuracy and inaccurate data. The standard for on-site spraying of image control points may be affected by terrain factors. In some areas, there is no flat concrete ground for spraying during field operations. There is also the arrangement of image control points by arranging integrated image control point devices, but the current image control point devices are often more complex in structure. On the one hand, they may also be affected by terrain factors and are difficult to fix on uneven ground. On the other hand, since a certain number of image control points need to be laid out in the drone flight area, especially in irregular areas, a large number of image control point devices are required, which is inconvenient to transport a large number of image control point devices. Utility Model Content

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a portable foldable drone aerial survey ground image control point device with a simple structure to meet the needs of drone aerial survey ground image control points. When not in operation, it can be folded into the size of a single positioning plate, and multiple image control point devices can be overlapped for storage, which greatly reduces the space required for transportation and is also convenient for operators to carry for the arrangement of image control points. When in operation, it unfolds into a flat plate structure with multiple fixing holes on it, which is convenient for it to be firmly fixed on various uneven grounds. It is suitable for installation in various harsh scenes to ensure the precision and accuracy of aerial surveys.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A portable foldable drone aerial survey ground image control point device includes three positioning plates that constitute the image control point device body. The positioning plates are all rectangular structures. The two perpendicular sides of one positioning plate are hinged to the other two positioning plates to form an L-shaped image control point device body, and the other two positioning plates can be wrapped around the positioning plate along the hinge point and overlap with it. Any of the three positioning plates is provided with a coding plate, and the L-shaped image control point device body also has multiple fixing holes connected to the ground.

[0007] In one embodiment, each of the positioning plates is provided with a pin hole for a fixing pin to pass through, so as to form a plurality of fixing holes on the image control point device body. Through this embodiment, a separate pin hole is provided on each positioning plate, so that when the image control point device body is unfolded, each positioning plate can be fixed to the ground through a fixing pin, and the image control point device body has a flat structure after being unfolded, ensuring that it can be firmly fixed on uneven ground.

[0008] In one embodiment, the plurality of pin holes are respectively located at the corner points of the image control point device body of the L-shaped structure, and when the three positioning plates are overlapped, the positions of the plurality of pin holes coincide with each other. Through this embodiment, on the one hand, the image control point device body is connected to the ground at its corner points after unfolding, thereby improving the stability of the connection. On the other hand, after the image control point device body is folded, the positions of all the pin holes coincide, which is convenient for storage, i.e., it is convenient to transport and carry multiple image control point device bodies in complex aerial survey areas.

[0009] In one embodiment, two adjacent positioning plates are hinged together by a rotating shaft hinge. According to this embodiment, the two adjacent positioning plates are connected by a rotating shaft hinge, which makes it convenient for operators to fold them.

[0010] In one embodiment, a recessed receiving groove is provided on the positioning plate on which the coding card is provided, and a recessed arc-shaped grabbing portion is also provided on one side of the receiving groove. Through this embodiment, a receiving groove is provided on the positioning plate for placing the coding card, and the arc-shaped grabbing portion provided on one side of the receiving groove facilitates the removal of the coding card.

[0011] In one embodiment, the size of the receiving groove is not less than the size of the coding plate. Through this embodiment, the opening of a receiving groove with a size not less than the size of the coding plate can further facilitate the operator to quickly load or remove the coding plate, thereby improving the efficiency of aerial survey. At the same time, the body of the image control point device after unfolding is a flat plate structure, and the problem of the coding plate falling off naturally is not likely to occur.

[0012] In one embodiment, the positioning plate is made of polyvinyl chloride material.

[0013] The beneficial effects of the present invention are:

[0014] (1) The structure is simple and meets the needs of ground image control points for drone aerial surveys. When not in operation, it can be folded into the size of a single positioning plate, and multiple image control point devices can be stacked and stored, which greatly reduces the space required for transportation. It is also convenient for operators to carry and arrange image control points. When in operation, it unfolds into a flat plate structure with multiple fixing holes on it, which makes it easy to fix it firmly on various uneven grounds. It is suitable for installation in various harsh scenes to ensure the precision and accuracy of aerial surveys.

[0015] (2) The image control point device has a flat structure after being unfolded. A pin hole is separately opened on each positioning plate, and the pin hole is located at the corner point of the image control point device after it is unfolded, so as to ensure the stability when connected to the ground. Even in the face of uneven or other harsh scenes, it is convenient to stabilize it on the ground by adjusting the connection depth between the fixing pin inserted into the pin hole and the ground. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0017] in:

[0018] Figure 1 Shows a schematic structural diagram of the utility model;

[0019] In the drawings, like reference numerals are used for like parts, but the drawings are not necessarily true to scale.

[0020] Reference numerals:

[0021] 1- positioning plate, 2- hinge, 3- latch hole, 4- coding plate, 5- groove, 6- arc-shaped grabbing part. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings.

[0023] The utility model provides a portable foldable UAV ground image control point device, such as Figure 1 As shown, the image control point device includes three positioning plates 1 that constitute the device body. The positioning plates 1 are all rectangular in structure. The two perpendicular sides of one positioning plate 1 are hinged to the other two positioning plates 1 to form an L-shaped image control point device body. The other two positioning plates 1 can be wrapped around the positioning plate 1 along the hinge point and overlap with it. A coding plate 4 is provided on any one of the three positioning plates 1. The L-shaped image control point device body also has a plurality of fixing holes connected to the ground.

[0024] It should be noted that if Figure 1 As shown, the image control point device provided by this embodiment has a simple structure and meets the needs of ground image control points for drone aerial survey. When not in operation, it can be folded into the size of a single positioning plate 1, and multiple image control point devices can be overlapped and stored, which greatly reduces the space required for transportation and is also convenient for operators to carry. Since a certain number of image control points need to be deployed in the drone flight area, especially when conducting aerial surveys in irregular areas, a large number of image control points are required. The image control point devices provided by this embodiment can be stacked together in an overlapping manner, which is convenient for transportation and for staff to carry and sequentially deploy on target points in the area. At the same time, when in operation, the image control point device body provided by this example is unfolded into a flat plate structure with multiple fixing holes on it, which is convenient for it to be firmly fixed on various uneven grounds. It is suitable for installation in various harsh scenes to ensure the precision and accuracy of aerial surveys.

[0025] Specifically, if Figure 1 As shown, each positioning plate 1 is provided with a pin hole 3 for a fixing pin to pass through, so as to form a plurality of fixing holes on the image control point device body. That is, a pin hole 3 is separately provided on each positioning plate 1, so that when the image control point device body is unfolded, each positioning plate 1 can be fixed to the ground through the fixing pin, and the image control point device body is unfolded to form a flat structure. When facing various uneven grounds, the multiple fixing points on it work together to improve its stability.

[0026] Furthermore, the plurality of latch holes 3 are respectively located at the corners of the L-shaped image control point device body, and when the three positioning plates 1 are overlapped, the positions of the plurality of latch holes 3 overlap with each other. That is, the positions of the latch holes 3 are designed in this embodiment. On the one hand, when the image control point device body is unfolded, its corners are connected to the ground, thereby improving the stability of the connection. On the other hand, when the image control point device body is folded, the positions of all the latch holes 3 overlap, which facilitates storage, i.e., it is convenient to transport and carry multiple image control point device bodies in complex aerial survey areas.

[0027] In one embodiment, two adjacent positioning plates 1 are hinged together by a rotating shaft hinge 2, that is, the two adjacent positioning plates 1 are connected by a rotating shaft hinge 2, which is convenient for operators to fold. Other methods such as hinges can also be used to hinge the two adjacent positioning plates 1 together.

[0028] In one embodiment, a recessed receiving groove is provided on the positioning plate 1 on which the coding plate 4 is provided, and a recessed arc-shaped grabbing portion 6 is further provided on one side of the receiving groove. Since the image control point device body provided in this embodiment has a flat structure after unfolding, that is, it is only necessary to open a receiving groove on any one of the positioning plates 1, and directly place the coding plate 4 in the receiving groove, without the need for other connecting structures, thereby improving the aerial survey efficiency. The coding plate 4 is provided in the image control point device body which has a flat structure after unfolding, and there is no risk of natural falling off. At the same time, the arc-shaped grabbing portion 6 provided on one side of the receiving groove facilitates the removal of the coding plate 4, and facilitates the aerial survey personnel to remove the coding plate 4 from the receiving groove, thereby further improving the efficiency of replacing the coding plate 4.

[0029] Furthermore, the size of the receiving slot is not less than the size of the code plate 4, that is, a receiving slot of a size not less than the size of the code plate 4 can be provided, which further facilitates the aerial survey personnel to quickly load or remove the code plate 4, thereby improving the efficiency of the aerial survey. At the same time, the image control point device body after being deployed has a flat plate structure, which makes it less likely for the code plate 4 to fall off naturally.

[0030] In one embodiment, the positioning plate 1 is made of polyvinyl chloride material, and the projection of the positioning plate 1 in the vertical direction is a square structure;

[0031] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0032] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It should be understood that many modifications may be made to the illustrative embodiments, and that other arrangements may be devised, without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in ways other than those described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be employed in conjunction with other described embodiments.

Claims

1. A portable foldable drone ground image control point device, characterized in that: The image control point device comprises three positioning plates, each of which is a rectangular structure. The two perpendicular sides of one positioning plate are hinged to the other two positioning plates to form an L-shaped image control point device body, and the other two positioning plates can be wound around the positioning plate along the hinge point and overlap with it. A coding plate is provided on any one of the three positioning plates, and the L-shaped image control point device body also has a plurality of fixing holes connected to the ground.

2. A portable foldable drone aerial survey ground image control point device according to claim 1, characterized in that: Each positioning plate is provided with a pin hole for a fixing pin to pass through, so as to form a plurality of fixing holes on the image control point device body.

3. The portable foldable UAV aerial survey ground image control point device according to claim 2, characterized in that: The plurality of pin holes are respectively located at the corner points of the image control point device body of the L-shaped structure, and when the three positioning plates are overlapped, the positions of the plurality of pin holes overlap with each other.

4. The portable foldable UAV aerial survey ground image control point device according to claim 1, characterized in that: Two adjacent positioning plates are hinged together via a rotating shaft hinge.

5. The portable foldable UAV ground image control point device according to claim 1, characterized in that: A recessed receiving groove is provided on the positioning plate on which the coding plate is provided, and a recessed arc-shaped grabbing portion is further provided on one side of the receiving groove.

6. The portable foldable UAV ground image control point device according to claim 5, characterized in that: The size of the accommodating groove is not less than the size of the coding plate.

7. The portable foldable UAV ground image control point device according to claim 1, characterized in that: The positioning plate is made of polyvinyl chloride material.

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