Landslide ground deformation monitoring device applying InSAR technology

Abstract

The invention discloses a landslide ground deformation monitoring device applying an InSAR technology, which comprises an unmanned aerial vehicle, a synthetic aperture radar is arranged above the unmanned aerial vehicle, a plurality of supporting mechanisms are arranged below the unmanned aerial vehicle, and the supporting mechanisms are fixedly connected with the unmanned aerial vehicle. A mounting plate is arranged between the unmanned aerial vehicle and the synthetic aperture radar, the top surface of the mounting plate is fixedly connected with the synthetic aperture radar, the edge of the mounting plate is in threaded connection with a plurality of connecting screws, and the connecting screws are in threaded connection with the top of the unmanned aerial vehicle. According to the invention, when the unmanned aerial vehicle carrying the synthetic aperture radar flies, the balls can randomly roll to a certain sliding block in the buffer tube, so that the sliding block, the support and the conical head which play a role in bearing are different when the unmanned aerial vehicle lands every time, thereby avoiding bearing of the same sliding block, the same support and the same conical head every time, and greatly reducing the risk of fracture. And the gravity center of the unmanned aerial vehicle can be adjusted by adjusting the number of the counterweight rings on the insertion rods, so that the unmanned aerial vehicle is more stable during flying.

Description

Technical Field

[0001] The invention relates to the field of landslide monitoring, and in particular to a landslide ground deformation monitoring device using InSAR technology. Background Art

[0002] In recent years, geological disasters such as earthquakes, volcanoes, landslides and ground subsidence have increasingly threatened human living space. The surface deformation monitoring and measurement technology developed to address such disasters has become particularly important.

[0003] The traditional mining subsidence monitoring method is to deploy a mobile rock observation station above the goaf for geometric measurement, and analyze and calculate the measurement results to obtain relevant parameters. Although the measurement instruments have been greatly improved in recent years, advanced instruments such as digital levels, total stations, and GPS can be used for surface subsidence observation, which reduces the labor intensity of field observations. However, the shortcomings of the surface mobile observation station method based on discrete points are still very obvious.

[0004] Disadvantages of traditional settlement observation:

[0005] 1. Discrete observation points are easily damaged by mining during the observation process and cannot be observed in the later stage, resulting in the loss of observation results.

[0006] 2. In mountainous areas and subsidence areas, some of the best observation locations are usually difficult for observers to enter or approach, resulting in unsatisfactory observation results.

[0007] 3. Although the observation instruments have been greatly improved, the observation intensity and difficulty are still high, and the cost of long-term observation is high.

[0008] 4. The observation points of the discrete point observation method are always limited, and its results are difficult to reflect the overall mining subsidence law, especially the influence of multiple environmental factors in the entire mining range.

[0009] As an important means of obtaining geospatial information through earth observation, aerospace remote sensing technology has developed rapidly in recent years. It can not only quickly and large-scale survey and produce topographic maps of various scales, but is also widely used in resource survey, environmental monitoring, disaster forecasting, disaster assessment and military reconnaissance. Among them, synthetic aperture radar (SAR) has developed into an indispensable new earth observation technology with its ability to obtain surface information all day and all weather.

[0010] The Interferometric Synthetic Aperture Radar (InSAR) technology developed based on SAR has been widely studied and applied in global and regional topographic mapping and large-scale surface deformation monitoring since the early 1990s. Compared with visible light remote sensing, InSAR realizes the geometric measurement of surface changes by remote sensing technology, can quantitatively study the active change status of the natural environment, and is a useful supplement to traditional optical remote sensing technology and measurement means. InSAR jointly processes two SAR images of the same area, extracts the phase difference at the corresponding pixel positions, and can obtain large-scale and high-precision three-dimensional information and change information of the surface. The InSAR technology for obtaining surface deformation is called Differential Synthetic Aperture Radar Interferometry.

[0011] Common devices equipped with synthetic aperture radar include drones. For example, the patent with publication number CN216186104U discloses an airborne synthetic aperture radar device for drones. The fixed box is fixedly connected to the bottom of the fixed rod; the support plate is arranged inside the fixed box; the synthetic aperture radar body is arranged on the top of the support plate; the cooling fan is arranged at the bottom of the power component; the clamping rod is fixedly connected to the bottom of the cooling fan; the cleaning ring is fixedly connected to the bottom of the clamping rod and fits on the outer wall of the synthetic aperture radar body; the rubber telescopic block is fixedly connected to the inner side wall of the cleaning ring; the cleaning brush is fixedly connected to the side end of the rubber telescopic block and fits on the outer wall of the synthetic aperture radar body; several dust-falling holes are opened inside the support plate; it avoids the problem of corrosion of the outer wall caused by more dust and sand on the surface of the synthetic aperture radar body, and thus improves the working efficiency of the synthetic aperture radar body.

[0012] The patent with publication number CN207389568U discloses a drone equipped with a synthetic aperture radar, including a drone body, a bearing platform, and a synthetic aperture radar device. A bracket is arranged below the drone body, and a locking buckle is arranged on the bracket. The bearing platform includes support rods, a connecting plate, and a mounting plate. The two support rods are connected by the connecting plate, and the mounting plate is arranged above the support rods and the connecting plate. A number of oblong holes are arranged horizontally and vertically on the mounting plate. The bearing platform is connected and installed on the bracket through the support rods and the locking buckle. Threaded holes are arranged on both the upper and lower surfaces of the synthetic aperture radar main body of the synthetic aperture radar device, and the synthetic aperture radar main body is installed above or below the bearing platform through mounting bolts. An antenna support is connected below the synthetic aperture radar main body, and a transmitting antenna and a receiving antenna are arranged below the antenna support. The transmitting antenna and the receiving antenna are connected by a coaxial cable inside the antenna support. The utility model is not restricted by meteorological conditions and lighting conditions.

[0013] After installing a synthetic aperture radar on a drone, the self-weight of the drone becomes larger. When it lands, its landing bracket often exceeds its original design load, and the risk of fracture during landing increases, resulting in the collision of the drone body and the synthetic aperture radar with the ground and causing damage, which needs to be improved. Summary of the Invention

[0014] The object of the present invention is to provide a landslide ground deformation monitoring device applying InSAR technology to solve the above technical problems.

[0015] To solve the above technical problems, the present invention adopts the following technical solutions to achieve:

[0016] A landslide ground deformation monitoring device applying InSAR technology includes a drone, a synthetic aperture radar is arranged above the drone, a plurality of support mechanisms are arranged below the drone, and the support mechanisms are fixedly connected to the drone.

[0017] Preferably, an installation plate is arranged between the drone and the synthetic aperture radar. The top surface of the installation plate is fixedly connected to the synthetic aperture radar. A plurality of connecting screws are threadedly connected to the edge of the installation plate, and the connecting screws are threadedly connected to the top of the drone.

[0018] Preferably, the support mechanism includes a buffer rod. The top of the buffer rod is fixedly connected to the bottom of the drone. A buffer tube is sleeved on the buffer rod. The buffer tube is slidably matched with the buffer rod. A first spring is sleeved on the buffer rod. The upper end of the first spring is fixedly connected to the drone, and the lower end of the first spring is fixedly connected to the top of the buffer tube.

[0019] Preferably, the support mechanism further includes a plurality of partition plates. The partition plates are located inside the buffer tube. The partition plates are located below the buffer rod. The partition plates are arranged in a circumferential array around the center of the buffer tube. The partition plates are fixedly connected to the inner wall of the buffer tube. A bracket assembly is arranged between two adjacent partition plates. A ball is arranged between the buffer rod and the partition plate.

[0020] Preferably, the bracket assembly includes a slider. The slider is located between two adjacent partition plates. The slider is slidably matched with the partition plates. An upper connecting plate is arranged below the slider. The upper connecting plate is fixedly connected to the bottom of the slider. A bracket is arranged below the upper connecting plate. The top end of the bracket is fixedly connected to the upper connecting plate. A second spring is sleeved on the bracket. The upper end of the second spring is fixedly connected to the partition plate, and the lower end of the second spring is fixedly connected to the bracket.

[0021] Preferably, the bracket assembly further includes a lower connecting plate. The top surface of the lower connecting plate is fixedly connected to the bottom end of the bracket. A conical head is arranged below the lower connecting plate. The top of the conical head is fixedly connected to the bottom surface of the lower connecting plate.

[0022] Preferably, a plurality of weight mechanisms are arranged in a circumferential array on the edge of the top surface of the installation plate.

[0023] Preferably, the weight mechanism includes an insertion rod. The lower end of the insertion rod is fixedly connected to the top surface of the installation plate. A plurality of weight rings are sleeved on the insertion rod. The weight rings are slidably matched with the insertion rod.

[0024] Preferably, a fixing nut is sleeved on the insertion rod. The fixing nut is in threaded connection with the insertion rod, and the fixing nut is located above the counterweight ring.

[0025] Preferably, the counterweight ring is a lead block.

[0026] The beneficial effects of the present invention are as follows:

[0027] In the present invention, when the drone carrying the synthetic aperture radar flies, the ball can randomly roll onto a certain slider in the buffer tube, so that each time the drone lands, the slider, the bracket, and the cone head that play the load-bearing role are different, thereby avoiding the same slider, bracket, and cone head bearing the load each time, greatly reducing the risk of fracture. And by adjusting the number of counterweight rings on each insertion rod, the center of gravity of the drone can be adjusted to make the drone fly more stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of a landslide ground deformation monitoring device applying the InSAR technology according to the present invention;

[0029] Figure 2 is a landslide ground deformation monitoring device applying the InSAR technology according to the present invention Figure 1 an enlarged schematic view of part A;

[0030] Figure 3 is a landslide ground deformation monitoring device applying the InSAR technology according to the present invention Figure 1 an enlarged schematic view of part B;

[0031] Reference numerals: 1, insertion rod; 2, fixing nut; 3, counterweight ring; 4, drone; 5, connecting screw; 6, mounting plate; 7, synthetic aperture radar; 8, buffer rod; 9, first spring; 10, buffer tube; 11, partition; 13, ball; 14, slider; 15, upper connecting plate; 16, bracket; 17, second spring; 18, lower connecting plate; 19, cone head. DETAILED DESCRIPTION OF THE INVENTION

[0032] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It 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 should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 communication inside 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.

[0035] Embodiment 1

[0036] As Figures 1-3 shown, a landslide ground deformation monitoring device applying InSAR technology includes a drone 4. Above the drone 4, a synthetic aperture radar 7 is provided. Below the drone 4, a plurality of support mechanisms are provided, and the support mechanisms are fixedly connected to the drone.

[0037] The drone 4 carries the synthetic aperture radar 7 and flies to a high place, and uses the synthetic aperture radar 7 to monitor the landslide ground deformation.

[0038] Embodiment 2

[0039] As Figures 1-3 shown, in the case where other parts are the same as those in Embodiment 1, the difference between this embodiment and Embodiment 1 is that: an installation plate 6 is provided between the drone 4 and the synthetic aperture radar 7. The top surface of the installation plate 6 is fixedly connected to the synthetic aperture radar 7. A plurality of connecting screws 5 are threadedly connected to the edge of the installation plate 6, and the connecting screws 5 are threadedly connected to the top of the drone 4.

[0040] The support mechanism includes a buffer rod 8. The top of the buffer rod 8 is fixedly connected to the bottom of the drone 4. A buffer tube 10 is sleeved on the buffer rod 8, and the buffer tube 10 is slidably matched with the buffer rod 8. A first spring 9 is sleeved on the buffer rod 8. The upper end of the first spring 9 is fixedly connected to the drone 4, and the lower end of the first spring 9 is fixedly connected to the top of the buffer tube 10. The support mechanism further includes a plurality of partition plates 11. The partition plates 11 are located inside the buffer tube 10 and below the buffer rod 8. The partition plates 11 are arranged in a circular array around the center of the buffer tube 10 and are fixedly connected to the inner wall of the buffer tube 10. A bracket assembly is arranged between two adjacent partition plates 11, and a ball 13 is arranged between the buffer rod 8 and the partition plate 11. The bracket assembly includes a slider 14. The slider 14 is located between two adjacent partition plates 11 and is slidably matched with the partition plate 11. An upper connecting plate 15 is arranged below the slider 14, and the upper connecting plate 15 is fixedly connected to the bottom of the slider 14. A bracket 16 is arranged below the upper connecting plate 15, and the top end of the bracket 16 is fixedly connected to the upper connecting plate 15. A second spring 17 is sleeved on the bracket 16. The upper end of the second spring 17 is fixedly connected to the partition plate 11, and the lower end of the second spring 17 is fixedly connected to the bracket 16. The bracket assembly further includes a lower connecting plate 18. The top surface of the lower connecting plate 18 is fixedly connected to the bottom end of the bracket 16, and a conical head 19 is arranged below the lower connecting plate 18. The top of the conical head 19 is fixedly connected to the bottom surface of the lower connecting plate 18.

[0041] When the drone 4 carrying the synthetic aperture radar 7 lands, the buffer tube 10 slides along the buffer rod 8 to compress the first spring 9, achieving a buffering effect.

[0042] When the bracket assembly contacts the ground, each conical head 19 first contacts the ground, and then the conical head 19 drives the bracket 16 and the slider 14 to slide upward.

[0043] There is a ball 13 above one of the sliders 14. The ball 13 is stuck between the slider 14 and the buffer rod 8, hindering the upward movement of the slider 14, the bracket 16, and the conical head 19 below it. The slider 14, the bracket 16, and the conical head 19 are the load-bearing parts during this landing process.

[0044] When the drone is flying, the ball 13 randomly rolls onto a certain slider 14 inside the buffer tube 10. Then, each time the drone lands, the sliders 14, the brackets 16, and the conical heads 19 that play a load-bearing role are different, thus avoiding the same sliders 14, brackets 16, and conical heads 19 bearing the load each time, greatly reducing the risk of fracture.

[0045] Embodiment 3

[0046] As Figures 1-3As shown, in the case where other parts are the same as those in Embodiment 2, the difference between this embodiment and Embodiment 2 lies in that a plurality of counterweight mechanisms are arranged in an annular array on the top surface edge of the mounting plate 6. The counterweight mechanism includes a plug rod 1, the lower end of the plug rod 1 is fixedly connected to the top surface of the mounting plate 6, a plurality of counterweight rings 3 are sleeved on the plug rod 1, and the counterweight rings 3 are slidably matched with the plug rod 1. A fixing nut 2 is sleeved on the plug rod 1, the fixing nut 2 is threadedly connected to the plug rod 1, and the fixing nut 2 is located above the counterweight ring 3. The counterweight ring 3 is a lead block.

[0047] Since the center of gravity of the drone shifts after the synthetic aperture radar 7 is installed on the drone, by adjusting the number of counterweight rings 3 on each plug rod 1, the center of gravity of the drone can be adjusted to make the drone fly more stably.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A landslide ground deformation monitoring device using InSAR technology, characterized in that: It comprises an unmanned aerial vehicle (4), wherein a synthetic aperture radar (7) is arranged above the unmanned aerial vehicle (4), and a plurality of supporting mechanisms are arranged below the unmanned aerial vehicle (4), wherein the supporting mechanisms are fixedly connected to the unmanned aerial vehicle.

2. The landslide ground deformation monitoring device using InSAR technology according to claim 1 is characterized by: A mounting plate (6) is provided between the drone (4) and the synthetic aperture radar (7); the top surface of the mounting plate (6) is fixedly connected to the synthetic aperture radar (7); a plurality of connecting screws (5) are threadedly connected to the edge of the mounting plate (6); and the connecting screws (5) are threadedly connected to the top of the drone (4).

3. The landslide ground deformation monitoring device using InSAR technology according to claim 2 is characterized by: The support mechanism comprises a buffer rod (8), the top of the buffer rod (8) is fixedly connected to the bottom of the drone (4), a buffer tube (10) is sleeved on the buffer rod (8), the buffer tube (10) and the buffer rod (8) are slidably matched, and a first spring (9) is sleeved on the buffer rod (8), the upper end of the first spring (9) is fixedly connected to the drone (4), and the lower end of the first spring (9) is fixedly connected to the top of the buffer tube (10).

4. The landslide ground deformation monitoring device using InSAR technology according to claim 3 is characterized by: The support mechanism further comprises a plurality of partitions (11), wherein the partitions (11) are located inside the buffer tube (10), the partitions (11) are located below the buffer rod (8), the partitions (11) are arranged in a circular array around the center of the buffer tube (10), the partitions (11) are fixedly connected to the inner wall of the buffer tube (10), a bracket assembly is arranged between two adjacent partitions (11), and a ball (13) is arranged between the buffer rod (8) and the partition (11).

5. The landslide ground deformation monitoring device using InSAR technology according to claim 4 is characterized by: The bracket assembly comprises a slider (14), the slider (14) is located between two adjacent partitions (11), the slider (14) and the partition (11) are slidably matched, an upper connecting plate (15) is arranged below the slider (14), the upper connecting plate (15) is fixedly connected to the bottom of the slider (14), a bracket (16) is arranged below the upper connecting plate (15), the top end of the bracket (16) is fixedly connected to the upper connecting plate (15), a second spring (17) is sleeved on the bracket (16), the upper end of the second spring (17) is fixedly connected to the partition (11), and the lower end of the second spring (17) is fixedly connected to the bracket (16).

6. The landslide ground deformation monitoring device using InSAR technology according to claim 5 is characterized by: The bracket assembly also includes a lower connecting plate (18), the top surface of the lower connecting plate (18) is fixedly connected to the bottom end of the bracket (16), and a cone head (19) is arranged below the lower connecting plate (18), and the top of the cone head (19) is fixedly connected to the bottom surface of the lower connecting plate (18).

7. The landslide ground deformation monitoring device using InSAR technology according to claim 6 is characterized by: A plurality of counterweight mechanisms are arranged in a circular array on the edge of the top surface of the mounting plate (6).

8. The landslide ground deformation monitoring device using InSAR technology according to claim 7 is characterized by: The counterweight mechanism comprises an insertion rod (1), the lower end of the insertion rod (1) is fixedly connected to the top surface of a mounting plate (6), a plurality of counterweight rings (3) are sleeved on the insertion rod (1), and the counterweight rings (3) are slidably matched with the insertion rod (1).

9. The landslide ground deformation monitoring device using InSAR technology according to claim 8 is characterized by: The insert rod (1) is sleeved with a fixing nut (2), the fixing nut (2) is threadedly connected to the insert rod (1), and the fixing nut (2) is located above the counterweight ring (3).

10. The landslide ground deformation monitoring device using InSAR technology according to claim 9, characterized in that: The counterweight ring (3) is a lead block.

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