A surveying device for a drone

Abstract

The utility model discloses a kind of surveying and mapping devices for unmanned aerial vehicle, belong to unmanned aerial vehicle surveying and mapping technical field, inner sleeve sliding is located in protective sleeve in device, camera acquisition device is installed in inner sleeve inside by electric telescopic cylinder;Drive mechanism drives inner sleeve telescoping, gravity sensor is electrically connected with control unit, control unit linkage drive mechanism and electric telescopic cylinder.Daily storage, double-layer sleeve and openable and closable closure realize dustproof and scratchproof, guarantee surveying and mapping accuracy;When aircraft loses weight, gravity sensor triggers control unit quickly, drives inner sleeve and camera acquisition device double retraction, closure synchronous closure forms protection, reduces component failure rate.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) surveying technology, and in particular to a surveying device for UAVs. Background Technology

[0002] With the rapid development of UAV technology, UAV surveying has been widely applied in various fields such as topographic surveying, engineering construction monitoring, and environmental governance inspection due to its advantages of high efficiency, flexibility, and wide coverage. As the core execution component of the UAV surveying system, the working status of the camera acquisition device directly determines the accuracy and integrity of the surveying data. Therefore, stringent requirements are placed on the protective performance and emergency protection capabilities of the camera acquisition device.

[0003] Existing UAV mapping devices often employ a direct, exposed installation method for their camera acquisition units, offering limited protection. During routine mapping operations, the lenses of these cameras are easily contaminated with dust and gravel, or scratched by airflow impacts or minor collisions during flight, thus affecting image quality. Furthermore, UAVs flying in complex environments are prone to sudden situations such as loss of control, collisions, and crashes (or bombings). In these situations, the device experiences weightlessness, and existing mapping devices generally lack rapid emergency protection mechanisms for weightless scenarios. Firstly, most devices lack multi-level retraction protection structures, preventing the camera acquisition unit from quickly retracting to a safe area during weightlessness, making the lens and device itself susceptible to damage from ground impacts and scratches. Secondly, some devices with protective covers rely on manual operation or a single drive structure for control, resulting in delayed closing responses and a lack of linkage design with the retraction action, making it difficult to promptly cover openings in emergencies and failing to provide effective protection. The aforementioned defects not only result in high maintenance costs for the camera acquisition equipment, but may also lead to interruptions in surveying operations and data loss, seriously affecting the efficiency and progress of surveying work. Summary of the Invention

[0004] The purpose of this invention is to provide a surveying device for unmanned aerial vehicles (UAVs) that can isolate dust and dirt and prevent lens scratches during daily storage to ensure surveying accuracy; and to quickly trigger retraction and cover closure in the event of a crash or weightlessness to protect the camera acquisition device.

[0005] To achieve the above objectives, this utility model provides a mapping device for unmanned aerial vehicles (UAVs), comprising a protective sleeve, an inner sleeve, a camera acquisition device, a gravity sensor, a control unit, a drive mechanism, an electric telescopic cylinder, a cover, and a self-closing hinge. The inner sleeve is slidably disposed inside the protective sleeve, and the camera acquisition device is installed inside the inner sleeve via the electric telescopic cylinder, which is fixedly connected to the top of the protective sleeve. The drive mechanism is used to drive the inner sleeve to extend and retract axially along the protective sleeve. One end of the self-closing hinge is fixedly connected to the bottom edge of the protective sleeve, and the other end is fixedly connected to the cover. The cover can be flipped by the self-closing hinge to open and close the opening at the bottom of the protective sleeve. The gravity sensor is electrically connected to the control unit, and the control unit is electrically connected to the drive mechanism and the electric telescopic cylinder. The gravity sensor is used to detect a weightlessness signal of the device and send it to the control unit. After receiving the signal, the control unit controls the drive mechanism and the electric telescopic cylinder to retract the camera acquisition device into the protective sleeve, while the cover closes under the action of the self-closing hinge, blocking the opening at the bottom of the protective sleeve.

[0006] Preferably, the drive mechanism includes a drive motor, a coupling, a lead screw, and a ball nut; the drive motor is fixed to the top of the inner sleeve, the output shaft of the drive motor is fixedly connected to one end of the lead screw through the coupling, and the lead screw is arranged along the axial direction of the protective sleeve; the ball nut is sleeved on the lead screw and threadedly engaged with the lead screw, and the ball nut is fixedly connected to the inner sleeve.

[0007] Preferably, the device further includes a slide rail and a slide groove; the slide rail is fixed axially to the outer wall of the inner sleeve, and the slide groove is formed on the inner wall of the protective sleeve. The slide rail and the slide groove are slidably engaged to limit the sliding direction of the inner sleeve.

[0008] Preferably, there are two self-closing hinges, symmetrically distributed on both sides of the bottom end of the protective sleeve; the cover is a circular structure adapted to the opening at the bottom end of the protective sleeve, and completely covers the opening at the bottom end of the protective sleeve when closed.

[0009] Preferably, a connecting ring is provided at the top of the outer side of the protective sleeve, the connecting ring being used for connection with the drone.

[0010] Preferably, the control unit is fixed to the inner side wall of the protective sleeve, the gravity sensor is fixed to the drive motor, and the control unit establishes wired / wireless signal connections with the gravity sensor, the drive motor, and the electric telescopic cylinder, respectively.

[0011] Preferably, there are two slide rails, evenly distributed along the outer wall of the inner sleeve; the number of slide grooves is the same as that of the slide rails, and their positions correspond one-to-one; the length of the slide groove is not less than the maximum extension stroke of the inner sleeve.

[0012] Therefore, this utility model employs the aforementioned mapping device for unmanned aerial vehicles (UAVs). In the event of a crash and weightlessness, the gravity sensor quickly triggers the control unit, driving the inner sleeve and camera acquisition device to retract. The self-closing cover closes simultaneously, forming double protection and significantly reducing the damage rate of core components. During daily storage, the double-layered sleeve and the openable / closable cover isolate dust and prevent lens scratches, ensuring the accuracy of the mapping data. Simultaneously, the slide rail and groove, combined with the screw drive, improve telescopic stability and extend service life.

[0013] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of an embodiment of a mapping device for unmanned aerial vehicles according to the present invention; Figure 2 This is a bottom view schematic diagram of an embodiment of a surveying device for unmanned aerial vehicles according to the present invention; Figure 3 This is a schematic diagram of the internal structure of an embodiment of a mapping device for unmanned aerial vehicles according to the present invention.

[0015] Figure Labels 1. Protective sleeve; 2. Gravity sensor; 3. Drive motor; 4. Coupling; 5. Lead screw; 6. Ball nut; 7. Self-closing hinge; 8. Cover; 9. Slide rail; 10. Inner sleeve; 11. Camera acquisition device; 12. Connecting ring; 13. Control unit; 14. Electric telescopic cylinder; 15. Slide groove. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0017] Unless otherwise defined, the technical or scientific terms used in this utility model shall have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0018] Example 1 This utility model provides a surveying device for unmanned aerial vehicles (UAVs), the structure of which is as follows: Figure 1-3 As shown, the system includes a protective sleeve 1, an inner sleeve 10, a camera acquisition device 11, a gravity sensor 2, a control unit 13, a drive mechanism, an electric telescopic cylinder 14, a cover 8, and self-closing and hinge 7. The inner sleeve 10 is slidably disposed inside the protective sleeve 1. The camera acquisition device 11 is installed inside the inner sleeve 10 via the electric telescopic cylinder 14, which is fixedly connected to the top of the protective sleeve 1. The drive mechanism is used to drive the inner sleeve 10 to extend and retract axially along the protective sleeve 1. The drive mechanism includes a drive motor 3, a coupling 4, a lead screw 5, and a ball nut 6. The drive motor 3 is fixed to the top of the inner sleeve 1. The output shaft of the drive motor 3 is fixedly connected to one end of the lead screw 5 via the coupling 4. The lead screw 5 is arranged axially along the protective sleeve 1. The ball nut 6 is sleeved on the lead screw 5 and threadedly engaged with it. The ball nut 6 is fixedly connected to the inner sleeve 10.

[0019] One end of the self-closing hinge 7 is fixedly connected to the bottom edge of the protective sleeve 1, and the other end is fixedly connected to the cover 8. The cover 8 can be flipped by the self-closing hinge 7 to open and close the bottom opening of the protective sleeve 1. There are two self-closing hinges 7, symmetrically distributed on both sides of the bottom of the protective sleeve 1. The cover 8 is a circular structure adapted to the bottom opening of the protective sleeve 1, and completely covers the bottom opening of the protective sleeve 1 when closed. The gravity sensor 2 is electrically connected to the control unit 13, and the control unit 13 is electrically connected to the drive mechanism and the electric telescopic cylinder 14. The gravity sensor 2 is used to detect the weightlessness signal of the device and send it to the control unit 13. After receiving the signal, the control unit 13 controls the drive mechanism and the electric telescopic cylinder 14 to move, causing the camera acquisition device 11 to retract into the protective sleeve 1. At the same time, the cover 8 closes under the action of the self-closing hinge 7, blocking the bottom opening of the protective sleeve 1.

[0020] The device also includes a slide rail 9 and a slide groove 15; the slide rail 9 is axially fixed to the outer wall of the inner sleeve 10, and the slide groove 15 is formed on the inner wall of the protective sleeve 1. The slide rail 9 and the slide groove 15 are slidably engaged, limiting the sliding direction of the inner sleeve 10. There are two slide rails 9, evenly distributed along the outer wall of the inner sleeve 10; the number of slide grooves 15 is the same as that of the slide rails 9, and their positions correspond one-to-one. The length of the slide groove 15 is not less than the maximum extension stroke of the inner sleeve 10.

[0021] The control unit 13 is fixed to the inner side wall of the protective sleeve 1, and the gravity sensor 2 is fixed to the drive motor 3. The control unit 13 establishes wired / wireless signal connections with the gravity sensor 2, the drive motor 3, and the electric telescopic cylinder 14, respectively. A connecting ring 12 is provided on the top of the outer side of the protective sleeve 1, which is used to connect with the drone.

[0022] The operating procedure for this device is as follows: S1. Secure the device to the drone using straps or similar means through the connecting ring 12 at the top of the outer side of the protective sleeve 1, ensuring a firm connection. Then check whether the inner sleeve 10 slides smoothly, the cover 8 flips flexibly, and the camera acquisition device 11 is securely connected. Confirm that the circuits between the control unit 13 and the gravity sensor 2, drive motor 3, and electric telescopic cylinder 14 are unobstructed.

[0023] S2. Power on the drone and device. The control unit 13 performs a self-test and provides an alarm when a fault is detected. The gravity sensor 2 is calibrated to zero to ensure accurate detection. The control unit 13 commands the drive motor 3 to extend the inner sleeve 10 and the electric telescopic cylinder 14 to extend the camera acquisition device 11, opening the cover 8.

[0024] S3. The drone flies along the preset route, the camera acquisition device 11 collects and transmits the mapping data; the gravity sensor 2 continuously sends a normal signal.

[0025] S4. When encountering a collision, loss of control, or other situations that cause the machine to crash and lose weight, the gravity sensor 2 transmits a signal to the control unit 13. The control unit 13 commands the drive motor 3 to retract the inner sleeve 10, the electric telescopic cylinder 14 to pull back the camera acquisition device 11, and the cover 8 to automatically close, protecting the camera acquisition device 11.

[0026] Therefore, this utility model employs the aforementioned mapping device for unmanned aerial vehicles (UAVs). In the event of a crash and weightlessness, the gravity sensor quickly triggers the control unit, driving the inner sleeve and camera acquisition device to retract. The self-closing cover closes simultaneously, forming double protection and significantly reducing the damage rate of core components. During daily storage, the double-layered sleeve and the openable / closable cover isolate dust and prevent lens scratches, ensuring the accuracy of the mapping data. Simultaneously, the slide rail and groove, combined with the screw drive, improve telescopic stability and extend service life.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the technical solution of this utility model, and these modifications or equivalent substitutions cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of this utility model.

Claims

1. A mapping device for unmanned aerial vehicles (UAVs), characterized in that: The system includes a protective sleeve (1), an inner sleeve (10), a camera acquisition device (11), a gravity sensor (2), a control unit (13), a drive mechanism, an electric telescopic cylinder (14), a cover (8), and a self-closing hinge (7). The inner sleeve (10) is slidably disposed inside the protective sleeve (1). The camera acquisition device (11) is installed inside the inner sleeve (10) via the electric telescopic cylinder (14), which is fixedly connected to the top of the protective sleeve (1). The drive mechanism is used to drive the inner sleeve (10) to extend and retract axially along the protective sleeve (1). One end of the self-closing hinge (7) is fixedly connected to the bottom edge of the protective sleeve (1), and the other end is fixedly connected to the bottom edge of the protective sleeve (1). The cover (8) is fixedly connected. The cover (8) can open and close the bottom opening of the protective sleeve (1) by self-closing and hinge (7) flipping. The gravity sensor (2) is electrically connected to the control unit (13). The control unit (13) is electrically connected to the drive mechanism and the electric telescopic cylinder (14). The gravity sensor (2) is used to detect the weightlessness signal of the device and send it to the control unit (13). After receiving the signal, the control unit (13) controls the drive mechanism and the electric telescopic cylinder (14) to move, driving the camera acquisition device (11) to retract into the protective sleeve (1). At the same time, the cover (8) closes under the action of self-closing and hinge (7), blocking the bottom opening of the protective sleeve (1).

2. The mapping device for UAVs according to claim 1, characterized in that: The drive mechanism includes a drive motor (3), a coupling (4), a lead screw (5), and a ball nut (6); the drive motor (3) is fixed to the top of the inside of the protective sleeve (1), and the output shaft of the drive motor (3) is fixedly connected to one end of the lead screw (5) through the coupling (4). The lead screw (5) is arranged along the axial direction of the protective sleeve (1); the ball nut (6) is sleeved on the lead screw (5) and threadedly engaged with the lead screw (5). The ball nut (6) is fixedly connected to the inner sleeve (10).

3. The mapping device for UAVs according to claim 1, characterized in that: The device also includes a slide rail (9) and a slide groove (15); the slide rail (9) is fixed axially to the outer wall of the inner sleeve (10), and the slide groove (15) is opened on the inner wall of the protective sleeve (1). The slide rail (9) and the slide groove (15) slide in cooperation to limit the sliding direction of the inner sleeve (10).

4. The mapping device for UAVs according to claim 1, characterized in that: Two self-closing hinges (7) are provided, symmetrically distributed on both sides of the bottom end of the protective sleeve (1); the cover (8) is a circular structure adapted to the bottom opening of the protective sleeve (1), and completely covers the bottom opening of the protective sleeve (1) when closed.

5. The mapping device for UAVs according to claim 1, characterized in that: A connecting ring (12) is provided on the top of the outer side of the protective sleeve (1), which is used to connect with the drone.

6. The mapping device for UAVs according to claim 2, characterized in that: The control unit (13) is fixed to the inner side wall of the protective sleeve (1), the gravity sensor (2) is fixed to the drive motor (3), and the control unit (13) establishes wired / wireless signal connections with the gravity sensor (2), the drive motor (3), and the electric telescopic cylinder (14) respectively.

7. The mapping device for UAVs according to claim 3, characterized in that: The slide rail (9) has two rails, which are evenly distributed along the outer wall of the inner sleeve (10); the number of the slide grooves (15) is the same as that of the slide rail (9), and their positions correspond one-to-one. The length of the slide groove (15) is not less than the maximum extension stroke of the inner sleeve (10).

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