A quick-deployable unmanned aerial vehicle survey target control point device

Abstract

The utility model discloses a kind of unmanned vehicle measurement target control point devices of quick deployment, comprising: base and high contrast target layer, high contrast target layer is located at the top of base, high contrast pattern for unmanned vehicle identification is provided thereon, high contrast target layer is detachably connected with base;Embedded GNSS positioning module is integrated in base, high-precision GPS / Beidou dual-mode RTK positioning chip is used, for capturing satellite signal, signal indicating unit is located on the high contrast target layer;Wireless data transmission module, located on base, embedded GNSS positioning module and signal indicating unit are connected by wireless module;The wireless data transmission module is used to send coordinate information to unmanned vehicle operation terminal in real time. The device can realize efficient layout and recovery under complex and harsh mine environment;High contrast target design is used, improve the identification rate in unmanned vehicle aerial survey image, guarantee the precision and reliability of measurement data.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) target control point technology, and specifically to a UAV measurement target control point device that can be quickly deployed. Background Technology

[0002] UAV target control points are ground references used for precise positioning, geometric correction, and accuracy verification during UAV aerial photography or operations.

[0003] With the rapid development of the mining surveying and geographic information acquisition industry, UAV aerial photogrammetry technology has become an important means of acquiring field data for mining area topographic mapping, resource surveys, and engineering monitoring. UAV aerial surveying can achieve large-scale, rapid, and high-resolution image acquisition, significantly improving measurement efficiency and data quality. However, in order to ensure high spatial accuracy of aerial images, it is necessary to set up several high-precision measurement control points on the ground and accurately obtain the spatial coordinates of these control points to achieve image data registration and modeling.

[0004] The existing methods of setting up mine survey control points generally have the following problems: First, traditional control points are often made of wooden stakes, cement blocks or metal markers, which are large in size and heavy in weight. The process of transportation and setting them up is cumbersome, especially in the field areas with complex terrain and harsh environment such as mines, where manual transportation is time-consuming and labor-intensive.

[0005] Second, existing control point targets are mostly simple coloring or markings, which are greatly affected by lighting and environmental interference. They are easily overlooked in UAV aerial images, resulting in low image recognition rate and affecting the accuracy of subsequent data processing.

[0006] Third, traditional control point coordinates are mostly collected manually using total stations, handheld GPS devices, etc., which is complex to operate, prone to errors in the recording process, and has low data transmission efficiency. In addition, control point removal is also time-consuming, and when working at multiple points in the field, omissions or losses are likely to occur, affecting the overall work progress. Utility Model Content

[0007] To address the aforementioned issues, this invention provides a rapidly deployable UAV target control point device, enabling efficient deployment and retrieval in complex and harsh mining environments. Its high-contrast target design improves the recognition rate in UAV aerial survey images, ensuring the accuracy and reliability of measurement data. The integrated high-precision GNSS positioning module enables automatic acquisition and real-time wireless transmission of centimeter-level coordinate information, simplifying field operations and improving efficiency. Furthermore, the device is foldable and easily stored, suitable for rapid, large-scale, multi-point operations, significantly improving the efficiency and data quality of mine surveying and meeting the demands of modern mines for efficient and high-precision mapping.

[0008] Specifically, this utility model is implemented as follows:

[0009] A rapidly deployable UAV target control point measurement device, comprising:

[0010] Base;

[0011] A high-contrast target layer is located on top of the base, on which a high-contrast pattern for drone recognition is provided. The high-contrast target layer is detachably connected to the base.

[0012] An embedded GNSS positioning module, integrated into the base, uses a high-precision GPS / BeiDou dual-mode RTK positioning chip to capture satellite signals and achieve centimeter-level high-precision coordinate information acquisition;

[0013] A signal indication unit is disposed on the high-contrast target layer;

[0014] A wireless data transmission module is mounted on the base, and the embedded GNSS positioning module and signal indication unit are connected through the wireless data transmission module; the wireless data transmission module is used to send coordinate information to the UAV operation terminal in real time.

[0015] Furthermore, a plurality of first magnetic absorbing sheets are evenly distributed along the edge of the base, and a plurality of second magnetic absorbing sheets are evenly attached to the outer edge of the high-contrast target layer. The first magnetic absorbing sheets correspond to the second magnetic absorbing sheets, and the high-contrast target layer is attracted to the base by the second magnetic absorbing sheets and the first magnetic absorbing sheets.

[0016] Furthermore, the high-contrast target layer is made of a waterproof and sun-resistant composite material, and the high-contrast pattern includes: checkerboard, T-shape, X-shape, circle or QR code.

[0017] Furthermore, the high-contrast target layer has a positioning hole in the center, the base has a central column with a central positioning hole, the embedded GNSS positioning module is integrated on the central positioning hole, and its antenna is exposed through the central positioning hole.

[0018] Furthermore, the base is made of aluminum alloy or carbon fiber composite material, and the bottom surface of the base has several pre-drilled holes for inserting ground nails or for use with a ballast bag.

[0019] Furthermore, a power system is provided on the base.

[0020] Working principle:

[0021] The power supply provides power to each electronic unit. The embedded GNSS positioning module 3 communicates in real time with the UAV operation terminal (such as a handheld tablet or ground station computer) through the wireless data transmission module 5. The wireless data transmission module 5 can use WiFi, Bluetooth or 4G / 5G communication to transmit the accurate coordinates and real-time status obtained by the embedded GNSS to the operation terminal.

[0022] High-contrast target layer 2 is the main identification marker of ground control points in drone aerial images. The drone captures images of the high-contrast target layer.

[0023] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0024] (1) The UAV measurement target control point device provided by this utility model can be quickly deployed. All components are detachable and can be packed into a carrying case, which can be taken to the next deployment location or back to the base. This makes it easy for a single person to carry and operate, and greatly improves the efficiency of control point deployment and recovery.

[0025] (2) The GNSS module communicates with the UAV operation terminal in real time, improving the accuracy and convenience of coordinate input; the high-contrast target and signal indication system ensure visibility and identifiability under various weather and lighting conditions. This device can flexibly select accessories such as the accuracy of the equipped GNSS module, wireless communication method and signal indication function according to the operation requirements.

[0026] (3) If the ground is soft or there is a strong wind, the operator can screw the ground nail through the base pin hole into the ground to improve the stability of the control point. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the UAV measurement target control point device that can be quickly deployed in Example 1;

[0028] Figure 2 This is an exploded view of the rapidly deployable UAV target control point measurement device in Example 1;

[0029] Figure 3 This is a bottom view of the rapidly deployable UAV target control point measurement device in Example 1;

[0030] Figure 4 This is a schematic diagram of the installation of the rapidly deployable UAV measurement target control point device in Example 1;

[0031] Figure 5 This is a schematic diagram of the usage status of the UAV measurement target control point device that can be quickly deployed in Example 1.

[0032] Figure label:

[0033] 1-Base; 11-First magnetic clasp; 12-Center post; 13-Pin hole; 14-Ground stake; 2-High contrast target layer; 21-Positioning hole; 22-Second magnetic clasp; 3-Embedded GNSS positioning module; 4-High brightness miniature LED light; 5-Wireless data transmission module; 6-Power system; 7-UAV. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] Example 1

[0036] like Figure 1-3 As shown, this embodiment provides a rapidly deployable UAV target control point device for use in aerial photogrammetry in mines, utilizing UAVs 7 for high-precision fieldwork. The target control point device includes a base 1 and a high-contrast target layer 2. The base 1 is the main supporting component of the device, and its shape can be designed as a relatively regular geometric shape such as a circle, rectangle, or polygon, depending on the usage requirements. The base 1 is made of high-strength, lightweight materials such as aluminum alloy (or carbon fiber composite material), and has several slots and hinges distributed on it for assembling the wireless data transmission module 5 and the power system 6.

[0037] A central column 12 is located in the middle of the base 1, and a central positioning hole is provided on the upper part of the central column 12 for accommodating and fixing the centrally embedded GNSS positioning module 3. Several first magnetic absorbing plates 11 are evenly distributed on the inner wall edge of the base 1, which are responsible for attracting and connecting with the second magnetic absorbing plates 22 on the outer edge of the high-contrast target layer 22. In addition, several pin holes 13 are reserved on the bottom surface of the base to insert ground nails 13 or to be used in conjunction with a ballast bag to ensure that the device is stably placed in strong winds or on uneven ground.

[0038] The high-contrast target layer 2 is the main identification marker for ground control points in the aerial images taken by the UAV 7. It is made of waterproof and sun-resistant composite material, and the surface is printed with high-contrast patterns such as checkerboard, T-shape, X-shape, circle or QR code. The center of the layer has a positioning hole 21 to expose the antenna of the embedded GNSS positioning module 3 in the center of the base.

[0039] The embedded GNSS positioning module 3 is integrated into the central positioning hole of the central column 13. It adopts a high-precision GPS / BeiDou dual-mode RTK positioning chip to capture satellite signals and achieve centimeter-level high-precision coordinate information acquisition. The antenna of the embedded GNSS positioning module 3 is exposed in the center of the high-contrast target layer 2 through the central positioning hole to ensure the stability of satellite signal reception.

[0040] The signal indication unit is a high-brightness miniature LED light 4, which is located at the edge of the high-contrast target layer 2. The high-brightness miniature LED light 4 is connected to the power system 6 and supports functions such as timed flashing and remote control switching, which facilitates the UAV 7 to accurately locate ground targets at night or in low visibility conditions.

[0041] The wireless data transmission module 5 is mounted on the base 1 and connected to the embedded GNSS positioning module 3 via a data cable. It also communicates in real time with the UAV 7 operating terminal (such as a handheld tablet or ground station computer). The wireless data transmission module 5 can use WiFi, Bluetooth, or 4G / 5G communication to transmit the accurate coordinates and real-time status obtained by GNSS to the operating terminal. It can also receive remote commands to control the switching of signal indicator units such as LEDs.

[0042] The power management system 6 is installed below the base 1 and includes a rechargeable lithium battery pack 61 and a power switch 63. It is located on the side of the base 1 for easy and quick power switching on and off in the field. The battery pack supplies power to each electronic unit.

[0043] like Figure 3-4 As shown, its detailed implementation process is as follows:

[0044] After arriving at the designated control point deployment area, the operator first removes the device body from the carrying case. Lifting the base 1, the operator then places the high-contrast target layer 2 onto the base 1, ensuring precise alignment between the target's center positioning hole 22 and the center post 12. The high-contrast target layer 2 is quickly and firmly attached to the base 1 by the attraction between the second magnetic plate 22 on the high-contrast target layer 2 and the corresponding first magnetic plate 11. Subsequently, if nighttime operation or special instructions are required, the operator can activate the high-brightness miniature LED light 4.

[0045] If the ground is soft or there is strong wind, the operator inserts the ground stake 14 through the base pin hole 13 and screws it into the ground. Then, the power management system 6 is activated to power the embedded GNSS positioning module 3, the wireless data transmission module 5, and the high-brightness miniature LED light. The embedded GNSS positioning module 3 automatically starts working, capturing satellite signals and obtaining centimeter-level high-precision coordinate information within seconds to a minute. The coordinate information is transmitted in real-time to the drone's 7 operating terminal via the wireless module 5, allowing the operator to read the spatial coordinates and operating status information of each control point in real time on the terminal.

[0046] After takeoff, UAV 7 uses its onboard high-definition camera to take aerial photos of the work area. The high-contrast target layer 2 in the captured images provides highly distinctive identification features. The automatic processing software can automatically match these features using graphic characteristics or QR codes, and combine them with coordinates acquired by GNSS to achieve rapid registration and high-precision modeling of the UAV 7 images. Once the fieldwork is completed, the operator disconnects the power, removes the high-contrast target layer 2, releases the ground stake 14, and the base 1 can then be folded back into its original position. All components are then repacked into the carrying case, ready to be taken to the next deployment location or back to base.

[0047] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A rapidly deployable UAV target control point measurement device, characterized in that, include: Base (1); A high-contrast target layer (2) is located on top of the base (1) and has a high-contrast pattern for drone recognition. The high-contrast target layer (2) is detachably connected to the base (1). An embedded GNSS positioning module (3) is integrated into the base (1) and uses a high-precision GPS / Beidou dual-mode RTK positioning chip to capture satellite signals and achieve centimeter-level high-precision coordinate information acquisition. A signal indication unit is disposed on the high-contrast target layer (2); The wireless data transmission module (5) is located on the base (1), and the embedded GNSS positioning module (3) and the signal indication unit are connected through the wireless data transmission module (5); the wireless data transmission module (5) is used to send coordinate information to the UAV operation terminal in real time.

2. The rapidly deployable UAV target control point measurement device as described in claim 1, characterized in that, The base (1) has several first magnetic absorbing pieces (11) evenly distributed on its edge, and the high contrast target layer (2) has several second magnetic absorbing pieces (22) evenly attached to its outer edge. The first magnetic absorbing pieces (11) correspond to the second magnetic absorbing pieces (22), and the high contrast target layer (2) is attracted to the base (1) by the second magnetic absorbing pieces (22) and the first magnetic absorbing pieces (11).

3. The rapidly deployable UAV target control point measurement device as described in claim 1, characterized in that, The high-contrast target layer is made of a waterproof and sun-resistant composite material, and the high-contrast pattern includes: checkerboard, T-shape, X-shape, circle or QR code.

4. The rapidly deployable UAV target control point measurement device as described in claim 3, characterized in that, The high-contrast target layer (2) has a positioning hole (21) in the center. The base (1) has a central column (12) with a central positioning hole. The embedded GNSS positioning module (3) is integrated on the central positioning hole, and its antenna is exposed through the central positioning hole.

5. The rapidly deployable UAV target control point measurement device as described in claim 1, characterized in that, The base (1) is made of aluminum alloy or carbon fiber composite material. Several pin holes (13) are reserved on the bottom surface of the base (1) so as to insert ground nails (14) or to be used in conjunction with a ballast bag.

6. The rapidly deployable UAV target control point measurement device as described in claim 1, characterized in that, A power system (6) is provided on the base (1).

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