Land area measuring device and method for surveying

Abstract

The invention discloses a land area measuring device and method for survey, and relates to the technical field of land survey, the land area measuring device comprises a machine body and a camera, the outer wall of the machine body is fixedly connected with a machine arm, the top end of the machine arm is provided with a propeller, and the bottom end of the machine body is symmetrically and rotatably connected with supporting legs; the camera performs shielding operation through a shielding mechanism; the device further comprises a mounting mechanism and an adjusting mechanism. According to the device, a shielding mechanism is arranged, a camera plots land through a transparent plate, at the moment, a first motor is started, the first motor operates to drive a bevel gear to rotate, the bevel gear rotates to drive a rotating seat to rotate, and the rotating seat rotates to drive the transparent plate to rotate; the transparent plate rotates to drive the impurities to move to the brush, and the brush brushes off the impurities on the transparent plate, so that the impurities are conveniently prevented from adhering to the front of a lens of the camera, and the impurities are prevented from shielding shooting of the camera.

Description

Technical Field

[0001] The present invention relates to the technical field of land surveying, and specifically relates to a land area measurement device and method for surveying. Background Technique

[0002] Land surveying and demarcation, abbreviated as surveying and demarcation, is a technical service work carried out according to the needs of land expropriation, requisition, transfer, transfer by agreement, conversion of agricultural land, land use planning, and land development, consolidation, and reclamation. It is used to demarcate the land use scope on the spot, measure the boundary positions, map the current land use situation, calculate the land area, and provide scientific and accurate basic data for the land use approval and cadastral management of the land resources administrative department. Among them, the measurement operation of the land area is an important operation item in land surveying.

[0003] The land area measurement device is equipped with devices such as a high-definition camera and a locator on the UAV body, so that a large amount of surveying and mapping data can be obtained in a relatively short time, and through image processing and data analysis technologies, maps and boundaries can be automatically generated, thus greatly improving the efficiency and accuracy of surveying and mapping. Moreover, by carrying out surveying and mapping on the UAV, it can ensure that the device can monitor the surface changes and environmental conditions in the area in real time, providing timely and accurate data support for land management and planning.

[0004] However, when using a UAV for surveying, impurities are easily adhered to the front of the lens, affecting the shooting of the camera. Especially during long-distance surveying and mapping, it may lead to measurement failure or data distortion. If it is brushed with a brush, the brush itself will also block the camera, thus affecting the surveying and mapping operation. In order to prevent sundries from blocking the camera, a land area measurement device and method for surveying are provided. Summary of the Invention

[0005] The purpose of the present invention is to provide a land area measurement device and method for surveying in order to prevent sundries from blocking the camera.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A land area measurement device for surveying, including a body and a camera. The outer wall of the body is fixedly connected with machine arms, the top of the machine arms is provided with propellers, the bottom end of the body is symmetrically rotatably connected with support feet, and the camera is shielded through a shielding mechanism; The shielding mechanism includes a protective shell, the protective shell is fixedly connected to the bottom end of the body, the camera is installed in the inner cavity of the protective shell, a mounting plate is fixedly connected to one side of the bottom end of the body where the protective shell is located, a first motor is installed on the outer wall of the mounting plate, the output end of the first motor is connected to a bevel gear, a rotating seat is arranged on the outer wall of the bevel gear, the rotating seat is rotationally connected to the body, a connecting rod is installed at the bottom end of the rotating seat, a transparent plate is fixedly connected to the bottom of the connecting rod, the transparent plate is located at the bottom end of the protective shell, a rotating plate is rotationally connected to the bottom end of the mounting plate, a brush is installed on the outer wall of the rotating plate, a positioning frame is slidably connected to the bottom end of the rotating plate inside the mounting plate, and a first spring is connected between the positioning frame and the mounting plate; the connecting rod is installed at the bottom end of the rotating seat through a mounting mechanism; the opening angle of the support feet is adjusted through an adjusting mechanism.

[0007] As a further scheme of the present invention: the mounting mechanism includes a connecting groove, the connecting groove is opened at the bottom end of the rotating seat, a fixing groove is opened on the inner wall of the connecting groove, fixing blocks are symmetrically and slidably connected inside the connecting rod, the fixing blocks extend out of the connecting rod, a second spring is fixedly connected between the two fixing blocks, a push plate is slidably connected to one side of the fixing block inside the connecting rod, a connecting rod is rotatably connected to the bottom end of the push plate, a displacement rod is rotatably connected to the bottom end of the connecting rod, a rotating block is rotatably connected to the bottom end of the connecting rod, and a first threaded rod is fixedly connected to the top end of the rotating block, and the first threaded rod extends into the inner part of the displacement rod.

[0008] As a further scheme of the present invention: the adjusting mechanism includes a second motor, the second motor is installed on the top end of the body, the output end of the second motor is connected to a second threaded rod, a displacement frame is connected to the outer wall of the second threaded rod, a cross rod is rotatably connected to the bottom end of the displacement frame, the cross rod is slidably connected to the outer wall of the support foot, a spur gear is fixedly connected to the position where the support foot is rotationally connected to the body, a toothed plate is slidably connected to the top of the spur gear inside the body, a displacement ring extending above the rotating seat is slidably connected inside the rotating seat, a third spring is connected between the displacement ring and the rotating seat, a pressing rod is fixedly connected to the bottom end of the displacement ring, a limiting block is slidably connected below the pressing rod inside the rotating seat, one end of the limiting block extends into the inner cavity of the connecting groove, a fourth spring is connected between the limiting block and the rotating seat, and limiting grooves are symmetrically opened on the outer wall of the connecting rod.

[0009] As a further scheme of the present invention: gear teeth are arranged on the outer wall of the rotating seat, and the gear teeth are meshed with the bevel gear.

[0010] As a further solution of the present invention: the outer wall of the top of the connecting rod fits with the inner wall of the connecting groove, and the outer wall of the fixed block fits with the inner wall of the fixed groove.

[0011] As a further solution of the present invention: a first threaded hole is opened at the bottom end of the displacement rod, and the first threaded hole matches the first threaded rod.

[0012] As a further solution of the present invention: a round rod passing through the push plate is fixedly connected inside the connecting rod, and a round hole for the round rod to slide is opened on the outer wall of the push plate.

[0013] As a further solution of the present invention: the displacement frame has an inverted U-shaped structure and a second threaded hole is opened at the top of the middle part thereof, and the second threaded hole matches the second threaded rod.

[0014] As a further solution of the present invention: a tooth groove is opened at the bottom end of the tooth plate, the tooth groove meshes with the straight gear, a part of the displacement ring extending out of the rotating seat is provided with an inclined surface, one end outer wall of the limiting block fits with the inner wall of the limiting groove, and the inner wall shape of the limiting groove is semicircular.

[0015] A method for measuring land area for surveying, the specific steps are as follows: Step 1: Install the camera into the protective shell, install the connecting rod at the bottom end of the rotating seat through the installation mechanism, and the transparent plate contacts the bottom end of the protective shell; Step 2: The flight of the body drives the camera to displace. The camera surveys and maps the land through the transparent plate. At this time, start the first motor. The operation of the first motor drives the transparent plate to rotate. When there are sundries adhered to the transparent plate, the rotation of the transparent plate drives the sundries to move to the brush, and the brush brushes off the sundries on the transparent plate; Step 3: The camera transmits the detected information to the terminal, and through image processing and data analysis technologies, maps and boundaries are automatically generated to calculate the land area.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting the shielding mechanism, the camera surveys and maps the land through the transparent plate. At this time, start the first motor. The operation of the first motor drives the bevel gear to rotate. The rotation of the bevel gear drives the rotating seat to rotate. The rotation of the rotating seat drives the transparent plate to rotate. When there are sundries adhered to the transparent plate, the rotation of the transparent plate drives the sundries to move to the brush, and the brush brushes off the sundries on the transparent plate, which can prevent sundries from adhering in front of the camera lens and avoid the sundries from blocking the camera shooting.

[0017] 2. By setting up the installation mechanism, insert the connecting rod into the connecting groove until the fixing block is engaged into the fixing groove under the elastic force of the second spring, thereby fixing the connecting rod and installing the transparent plate. When removing the transparent plate, rotate the rotating block to drive the push plate to displace. The displacement of the push plate drives the fixing block to displace. The fixing block displaces out of the fixing groove, canceling the fixation of the connecting rod. Displace the connecting rod out of the connecting groove to achieve the disassembly operation of the transparent plate. This design facilitates the quick installation and disassembly of the transparent plate, thus facilitating the installation and disassembly operations of the camera inside the protective shell.

[0018] 3. By setting up the adjustment mechanism, the second motor operates to drive the second threaded rod to rotate. The rotation of the second threaded rod drives the displacement frame to displace. The displacement of the displacement frame drives the cross bar to displace. The displacement of the cross bar drives the support feet to rotate, facilitating the adjustment of the opening angle of the support feet, avoiding the support feet from blocking the shooting of the camera, and at the same time strengthening the transparent plate to prevent the transparent plate from loosening during the shooting of the camera. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic installation diagram of the transparent plate of the present invention; Figure 3 is a schematic installation diagram of the camera of the present invention; Figure 4 is a schematic internal structural diagram of the mounting plate of the present invention; Figure 5 is a schematic internal structural diagram of the connecting rod of the present invention; Figure 6 is a schematic internal structural diagram of the rotating seat of the present invention; Figure 7 is a schematic installation diagram of the displacement frame of the present invention; Figure 8 is a schematic installation diagram of the toothed plate of the present invention.

[0020] In the figure: 1, body; 2, arm; 3, propeller; 4, support leg; 5, camera; 6, shielding mechanism; 601, protective shell; 602, mounting plate; 603, first motor; 604, bevel gear; 605, rotating seat; 606, connecting rod; 607, transparent plate; 608, rotating plate; 609, brush; 610, positioning frame; 611, first spring; 7, mounting mechanism; 701, connecting groove; 702, fixing groove; 703, fixing block; 704, second spring; 705, push plate; 706, connecting rod; 707, displacement rod; 708, first threaded rod; 709, rotating block; 8, adjusting mechanism; 801, second motor; 802, second threaded rod; 803, displacement frame; 804, cross bar; 805, spur gear; 806, toothed plate; 807, displacement ring; 808, third spring; 809, pressing rod; 810, limiting block; 811, fourth spring; 812, limiting groove; 9, round rod. Detailed implementation manners

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The embodiments of the present invention will be described below according to the overall structure of the present invention.

[0023] Please refer to Figures 1 to 8, in the embodiment of the present invention, a land area measuring device for surveying includes a body 1 and a camera 5. An arm 2 is fixedly connected to the outer wall of the body 1. A propeller 3 is installed at the top of the arm 2. Support feet 4 are symmetrically and rotatably connected to the bottom of the body 1. The camera 5 is shielded by a shielding mechanism 6. The shielding mechanism 6 includes a protective shell 601. The protective shell 601 is fixedly connected to the bottom of the body 1. The camera 5 is installed in the inner cavity of the protective shell 601. An installation plate 602 is fixedly connected to one side of the bottom of the body 1 where it is located inside the protective shell 601. A first motor 603 is installed on the outer wall of the installation plate 602. The output end of the first motor 603 is connected to a bevel gear 604. A rotating seat 605 is arranged on the outer wall of the bevel gear 604. The rotating seat 605 is rotatably connected to the body 1. A connecting rod 606 is installed at the bottom of the rotating seat 605. A transparent plate 607 is fixedly connected to the bottom of the connecting rod 606. The transparent plate 607 is located at the bottom of the protective shell 601. A rotating plate 608 is rotatably connected to the bottom of the installation plate 602. A brush 609 is installed on the outer wall of the rotating plate 608. A positioning frame 610 is slidably connected to the bottom of the installation plate 602 inside the installation plate 602. A first spring 611 is connected between the positioning frame 610 and the installation plate 602; the connecting rod 606 is installed at the bottom of the rotating seat 605 through an installation mechanism 7; the opening angle of the support feet 4 is adjusted by an adjustment mechanism 8.

[0024] In this embodiment: The camera 5 is installed into the protective shell 601. The connecting rod 606 is installed at the bottom of the rotating seat 605 through the installation mechanism 7. The transparent plate 607 is in contact with the bottom of the protective shell 601. Then the rotating plate 608 is rotated from the vertical state to the horizontal state, so that the brush 609 is in contact with the transparent plate 607. At this time, the positioning frame 610 is displaced under the elastic force of the first spring 611 and contacts the bottom of the rotating plate 608 to position the position of the rotating plate 608; the flight of the body 1 drives the camera 5 to displace. The camera 5 surveys the land through the transparent plate 607. At this time, the first motor 603 is started. The operation of the first motor 603 drives the bevel gear 604 to rotate. The rotation of the bevel gear 604 drives the rotating seat 605 to rotate. The rotation of the rotating seat 605 drives the transparent plate 607 to rotate. When sundries adhere to the transparent plate 607, the rotation of the transparent plate 607 drives the impurities to move to the brush 609. The brush 609 brushes off the sundries on the transparent plate 607 to prevent sundries from adhering in front of the lens of the camera 5 and blocking the shooting of the camera 5.

[0025] Please refer to Figures 5 to 6, the installation mechanism 7 includes a connection groove 701, the connection groove 701 is opened at the bottom end of the rotating seat 605, a fixing groove 702 is opened on the inner wall of the connection groove 701, fixing blocks 703 are symmetrically and slidably connected inside the connecting rod 606, the fixing blocks 703 extend out of the connecting rod 606, a second spring 704 is fixedly connected between the two fixing blocks 703, a push plate 705 is slidably connected inside the connecting rod 606 on one side of the fixing block 703, a connecting rod 706 is rotatably connected to the bottom end of the push plate 705, a displacement rod 707 is rotatably connected to the bottom end of the connecting rod 706, a rotating block 709 is rotatably connected to the bottom end of the connecting rod 606, and a first threaded rod 708 is fixedly connected to the top end of the rotating block 709, and the first threaded rod 708 extends into the displacement rod 707.

[0026] In this embodiment: When installing the transparent plate 607, insert the connecting rod 606 into the connection groove 701 until the fixing block 703 is snapped into the fixing groove 702 under the elastic force of the second spring 704 to fix the connecting rod 606, thereby installing the transparent plate 607; When removing the transparent plate 607, rotate the rotating block 709, the rotation of the rotating block 709 drives the first threaded rod 708 to rotate, the rotation of the first threaded rod 708 drives the displacement rod 707 to displace, the displacement of the displacement rod 707 drives the push plate 705 to displace through the connecting rod 706, the displacement of the push plate 705 pushes the fixing block 703 to displace, the fixing block 703 displaces out of the fixing groove 702, cancel the fixing of the connecting rod 606, and displace the connecting rod 606 out of the connection groove 701 to realize the disassembly operation of the transparent plate 607. This design facilitates the quick installation and disassembly of the transparent plate 607, thereby facilitating the installation and disassembly operations of the camera 5 inside the protective shell 601.

[0027] Please refer specifically to Figures 5 to 8 , the adjustment mechanism 8 includes a second motor 801, the second motor 801 is installed at the top end of the machine body 1, the output end of the second motor 801 is connected to a second threaded rod 802, a displacement frame 803 is connected to the outer wall of the second threaded rod 802, a cross bar 804 is rotatably connected to the bottom end of the displacement frame 803, the cross bar 804 is slidably connected to the outer wall of the support foot 4, a spur gear 805 is fixedly connected to the position where the support foot 4 is rotatably connected to the machine body 1, a toothed plate 806 is slidably connected inside the machine body 1 above the spur gear 805, a displacement ring 807 extending above the rotating seat 605 is slidably connected inside the rotating seat 605, a third spring 808 is connected between the displacement ring 807 and the rotating seat 605, a pressing rod 809 is fixedly connected to the bottom end of the displacement ring 807, a limiting block 810 is slidably connected inside the rotating seat 605 below the pressing rod 809, one end of the limiting block 810 extends into the inner cavity of the connection groove 701, a fourth spring 811 is connected between the limiting block 810 and the rotating seat 605, and limiting grooves 812 are symmetrically opened on the outer wall of the connecting rod 606.

[0028] In this embodiment: The operation of the second motor 801 drives the second threaded rod 802 to rotate. The rotation of the second threaded rod 802 drives the displacement frame 803 to displace. The displacement of the displacement frame 803 drives the cross bar 804 to displace. The displacement of the cross bar 804 drives the support foot 4 to perform a rotation operation. Thus, when the body 1 is flying, the support foot 4 is driven by the second motor 801 to open, avoiding the support foot 4 from blocking the shooting of the camera 5.

[0029] When installing the transparent plate 607, the connecting rod 606 is inserted into the connecting groove 701. At this time, the limiting block 810 is engaged into the limiting groove 812 under the elastic force of the fourth spring 811. When the support foot 4 opens, the rotation of the support foot 4 drives the spur gear 805 to rotate. The rotation of the spur gear 805 drives the toothed plate 806 to displace. The displacement of the toothed plate 806 contacts the displacement ring 807, pushing the displacement ring 807 to displace and squeezing the third spring 808. The displacement of the displacement ring 807 drives the pressing rod 809 to displace. The displacement of the pressing rod 809 contacts the limiting block 810, making the limiting block 810 unable to displace out of the limiting groove 812, thereby strengthening the transparent plate 607 and preventing the transparent plate 607 from loosening. This design facilitates the adjustment operation of the opening angle of the support foot 4, avoids the support foot 4 from blocking the shooting of the camera 5, and at the same time strengthens the transparent plate 607 to prevent the transparent plate 607 from loosening during the shooting of the camera 5.

[0030] Please refer particularly to Figures 1 to 4 , the outer wall of the rotating seat 605 is provided with gear teeth, and the gear teeth are meshed with the bevel gear 604.

[0031] In this embodiment: The operation of the first motor 603 drives the bevel gear 604 to rotate. The rotation of the bevel gear 604 drives the rotating seat 605 to rotate. The rotation of the rotating seat 605 drives the transparent plate 607 to rotate.

[0032] Please refer particularly to Figures 5 to 6 , the outer wall of the top of the connecting rod 606 fits with the inner wall of the connecting groove 701, and the outer wall of the fixing block 703 fits with the inner wall of the fixing groove 702.

[0033] In this embodiment: The connecting rod 606 is inserted into the connecting groove 701 until the fixing block 703 is engaged into the fixing groove 702 under the elastic force of the second spring 704 to fix the connecting rod 606.

[0034] Please refer particularly to Figures 5 to 6 , the bottom end of the displacement rod 707 is provided with a first threaded hole, and the first threaded hole matches the first threaded rod 708.

[0035] In this embodiment: Rotate the rotating block 709. The rotation of the rotating block 709 drives the first threaded rod 708 to rotate. The rotation of the first threaded rod 708 drives the displacement rod 707 to displace. The displacement of the displacement rod 707 drives the push plate 705 to displace through the connecting rod 706. The displacement of the push plate 705 pushes the fixed block 703 to displace. The fixed block 703 displaces out of the fixed groove 702, canceling the fixation of the connecting rod 606.

[0036] Please refer particularly to Figures 5 to 6 , a round rod 9 fixedly connected to the inside of the connecting rod 606 penetrates through the push plate 705, and a round hole for the round rod 9 to slide is formed in the outer wall of the push plate 705.

[0037] In this embodiment: When the push plate 705 displaces, the round rod 9 slides in the round hole to limit the displacement direction of the push plate 705.

[0038] Please refer particularly to Figures 5 to 8 , the displacement frame 803 has an inverted U-shaped structure and a second threaded hole is formed at the top of the middle part thereof, and the second threaded hole is matched with the second threaded rod 802.

[0039] In this embodiment: The operation of the second motor 801 drives the second threaded rod 802 to rotate. The rotation of the second threaded rod 802 drives the displacement frame 803 to displace. The displacement of the displacement frame 803 drives the cross bar 804 to displace. The displacement of the cross bar 804 drives the support foot 4 to perform a rotation operation.

[0040] Please refer particularly to Figures 5 to 8 , a tooth groove is formed at the bottom end of the tooth plate 806, and the tooth groove is engaged with the spur gear 805. A part of the displacement ring 807 extending out of the rotating seat 605 is provided with an inclined surface. One end outer wall of the limiting block 810 is attached to the inner wall of the limiting groove 812, and the inner wall shape of the limiting groove 812 is semi-circular; a slope structure is provided on the upper surface of the limiting block 810 and contacts the slope structure when the pressing rod 809 is at the lower limit position.

[0041] In this embodiment: The limiting block 810 is snapped into the limiting groove 812 under the elastic force of the fourth spring 811. When the support foot 4 opens, the rotation of the support foot 4 drives the spur gear 805 to rotate. The rotation of the spur gear 805 drives the tooth plate 806 to displace. The displacement of the tooth plate 806 contacts the displacement ring 807 and pushes the displacement ring 807 to displace, squeezing the third spring 808. The displacement of the displacement ring 807 drives the pressing rod 809 to displace. The displacement of the pressing rod 809 contacts the limiting block 810, making the limiting block 810 unable to displace out of the limiting groove 812, thereby strengthening the transparent plate 607.

[0042] A method for measuring the land area for surveying, the specific steps are as follows: Step 1: Install the camera 5 into the protective housing 601. Install the connecting rod 606 at the bottom end of the rotating base 605 through the installation mechanism 7. The transparent plate 607 is in contact with the bottom end of the protective housing 601. Step 2: The flight of the body 1 drives the camera 5 to displace. The camera 5 surveys the land through the transparent plate 607. At this time, start the first motor 603. The operation of the first motor 603 drives the transparent plate 607 to rotate. When there are sundries adhered to the transparent plate 607, the rotation of the transparent plate 607 drives the impurities to move to the brush 609, and the brush 609 brushes off the sundries on the transparent plate 607. Step 3: The camera 5 transmits the detected information to the terminal. Through image processing and data analysis technologies, a map and boundaries are automatically generated to measure the land area.

[0043] The above is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A land area measuring device for surveying, comprising a body (1) and a camera (5), wherein an arm (2) is fixedly connected to the outer wall of the body (1), and a propeller (3) is installed at the top of the arm (2), characterized in that: The bottom end of the body (1) is symmetrically rotatably connected to a support foot (4), and the camera (5) is shielded by a shielding mechanism (6); The shielding mechanism (6) comprises a protective shell (601), the protective shell (601) is fixedly connected to the bottom end of the body (1), the camera (5) is installed in the inner cavity of the protective shell (601), the bottom end of the body (1) is located on one side of the protective shell (601) and is fixedly connected to a mounting plate (602), the outer wall of the mounting plate (602) is installed with a first motor (603), the output end of the first motor (603) is connected to a bevel gear (604), the outer wall of the bevel gear (604) is provided with a rotating seat (605), the rotating seat (605) is rotatably connected to the body (1), the bottom end of the rotating seat (605) is installed with a connecting rod (606), the connecting rod (606) is connected to the bottom end of the rotating seat (605), and the connecting rod (606) is connected to the bottom end of the rotating seat (605). A transparent plate (607) is fixedly connected to the bottom of the rod (606), and the transparent plate (607) is located at the bottom end of the protective shell (601). A rotating plate (608) is rotatably connected to the bottom end of the mounting plate (602), and a brush (609) is installed on the outer wall of the rotating plate (608). A positioning frame (610) is slidably connected to the bottom end of the rotating plate (608) inside the mounting plate (602), and a first spring (611) is connected between the positioning frame (610) and the mounting plate (602). The connecting rod (606) is mounted on the bottom end of the rotating seat (605) through a mounting mechanism (7); and the opening angle of the supporting foot (4) is adjusted through an adjustment mechanism (8).

2. A land area measuring device for surveying according to claim 1, characterized in that: The mounting mechanism (7) comprises a connecting groove (701), the connecting groove (701) being provided at the bottom end of the rotating seat (605), the inner wall of the connecting groove (701) being provided with a fixing groove (702), the interior of the connecting rod (606) being symmetrically slidably connected with a fixing block (703), the fixing block (703) extending out of the connecting rod (606), a second spring (704) being fixedly connected between the two fixing blocks (703), and the connecting rod (606) being provided with a fixing block (703) extending out of the connecting rod (606). A push plate (705) is slidably connected to one side of the fixed block (703) inside, the bottom end of the push plate (705) is rotatably connected to a connecting rod (706), the bottom end of the connecting rod (706) is rotatably connected to a displacement rod (707), the bottom end of the connecting rod (606) is rotatably connected to a rotating block (709), the top end of the rotating block (709) is fixedly connected to a first threaded rod (708), and the first threaded rod (708) extends to the inside of the displacement rod (707).

3. A land area measuring device for surveying according to claim 2, characterized in that: The adjusting mechanism (8) comprises a second motor (801), the second motor (801) being mounted on the top of the machine body (1), the output end of the second motor (801) being connected to a second threaded rod (802), the outer wall of the second threaded rod (802) being connected to a displacement frame (803), the bottom end of the displacement frame (803) being rotatably connected to a cross bar (804), the cross bar (804) being slidably connected to the outer wall of the supporting foot (4), a spur gear (805) being fixedly connected at a position where the supporting foot (4) is rotatably connected to the machine body (1), a toothed plate (806) being slidably connected to the top of the spur gear (805) inside the machine body (1), the rotating seat The interior of (605) is slidably connected to a displacement ring (807) extending to the top of the rotating seat (605), a third spring (808) is connected between the displacement ring (807) and the rotating seat (605), the bottom end of the displacement ring (807) is fixedly connected to a downward pressure rod (809), the interior of the rotating seat (605) is slidably connected to a limiting block (810) located below the downward pressure rod (809), one end of the limiting block (810) extends to the inner cavity of the connecting groove (701), a fourth spring (811) is connected between the limiting block (810) and the rotating seat (605), and the outer wall of the connecting rod (606) is symmetrically provided with limiting grooves (812).

4. The land area measuring device for surveying according to claim 1, characterized in that: The outer wall of the rotating seat (605) is provided with gear teeth, and the gear teeth are meshed with the bevel gear (604).

5. The land area measuring device for surveying according to claim 2, characterized in that: The top outer wall of the connecting rod (606) fits with the inner wall of the connecting groove (701), and the outer wall of the fixing block (703) fits with the inner wall of the fixing groove (702).

6. The land area measuring device for surveying according to claim 2, characterized in that: A first threaded hole is formed at the bottom end of the displacement rod (707), and the first threaded hole matches the first threaded rod (708).

7. The land area measuring device for surveying according to claim 2, characterized in that: A round rod (9) penetrating the push plate (705) is fixedly connected to the interior of the connecting rod (606), and a round hole for the round rod (9) to slide is provided on the outer wall of the push plate (705).

8. The land area measuring device for surveying according to claim 3, characterized in that: The displacement frame (803) is in an inverted U-shaped structure and a second threaded hole is provided at the top of the middle portion thereof, and the second threaded hole matches the second threaded rod (802).

9. The land area measuring device for surveying according to claim 3, characterized in that: A tooth groove is provided at the bottom end of the tooth plate (806), and the tooth groove meshes with the spur gear (805). A portion of the displacement ring (807) extending out of the rotating seat (605) is provided with an inclined surface. An outer wall of one end of the limit block (810) is in contact with an inner wall of the limit groove (812), and the inner wall of the limit groove (812) is semicircular in shape.

10. The measuring method of the land area measuring device for surveying according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: Step 1: Install the camera (5) into the protective shell (601), install the connecting rod (606) on the bottom end of the rotating seat (605) through the installation mechanism (7), and the transparent plate (607) is in contact with the bottom end of the protective shell (601); Step 2: The body (1) flies to drive the camera (5) to move, and the camera (5) surveys the land through the transparent plate (607). At this time, the first motor (603) is started, and the operation of the first motor (603) drives the transparent plate (607) to rotate. When there are foreign objects adhering to the transparent plate (607), the rotation of the transparent plate (607) drives the foreign objects to move to the brush (609), and the brush (609) brushes the foreign objects off the transparent plate (607); Step 3: The camera (5) transmits the detected information to the terminal, and automatically generates maps and boundaries through image processing and data analysis technology to measure the land area.

Images