A landslide detection device

Abstract

The present application relates to the technical field of geological detection, and particularly relates to a landslide detection device, which comprises a shell, a friction induction surface on the inner wall of the shell, an electro-induction turntable connected to the shell in a relative rotating manner, an electro-induction boss on the circumferential side of the electro-induction turntable, a driving assembly comprising a driving member arranged outside the shell and a transmission member connected with the driving member and extending into the shell for driving the electro-induction turntable to rotate, and a circuit system arranged in the shell and electrically connected with the friction induction surface, wherein the circuit system is configured to capture an electric signal generated by the friction between the electro-induction boss and the friction induction surface when the driving member drives the transmission member to drive the electro-induction turntable to rotate under an external force, and transmit the electric signal to an external monitoring device. The present application converts the ground movement during a landslide into the rotation of the electro-induction turntable and the friction between the electro-induction boss and the friction induction surface to generate an electric signal, and realizes the detection of the landslide by capturing the electric signal.

Description

Technical Field

[0001] This invention relates to the field of geological testing technology, and in particular to a landslide detection device. Background Technology

[0002] A landslide is a geological disaster in which soil, rock, and other materials suddenly slide down a weak surface (such as a crack or bedding plane) of a slope or hillside under the influence of gravity. Landslides can cause severe property damage and casualties, especially in mountainous, hilly areas and areas with large-scale engineering construction. Landslide detection aims to identify signs of landslides in advance and provide early warnings to reduce losses.

[0003] In the existing technology, the mainstream methods for landslide detection include traditional ground observation, remote sensing and remote sensing, and automated detection systems. These technologies can be used individually or in combination. In order to achieve comprehensive detection of landslide displacement, multiple detection devices are often integrated and work together to provide more comprehensive landslide monitoring information.

[0004] However, in the current field of landslide detection, although traditional detection equipment can provide the necessary detection data, it usually requires external power supply. This may cause power supply difficulties in remote or hard-to-reach areas. Although using solar power can be regarded as a feasible solution, the solar power supply solution has problems such as many equipment parts, large size, and difficulty in transportation and maintenance. Summary of the Invention

[0005] In view of at least one of the above-mentioned technical problems, the present invention provides a landslide detection device that employs structural improvements to enhance the reliability of landslide detection.

[0006] According to a first aspect of the present invention, a landslide detection device is provided, comprising:

[0007] A housing having a cylindrical space inside, and a friction-sensing surface on the inner wall of the housing;

[0008] An inductive turntable is rotatably connected to the housing, and the circumference of the inductive turntable has radially protruding inductive bosses.

[0009] The drive assembly includes a drive component disposed outside the housing and a transmission component connected to the drive component and extending into the housing for driving the induction turntable to rotate.

[0010] The circuit system is disposed inside the housing and electrically connected to the friction sensing surface;

[0011] The circuit system is configured such that when the driving member is subjected to an external force, it drives the transmission member to drive the rotation of the electrosensitive turntable, the rotation of the electrosensitive turntable causes the electrosensitive boss to rub against the friction sensing surface to generate an electrical signal, and the circuit system captures the electrical signal and transmits it to an external monitoring device.

[0012] In some embodiments of the present invention, the housing includes a sleeve, which is cylindrical and spliced ​​together on the axial surface.

[0013] In some embodiments of the present invention, the housing further includes end caps detachably connected to both ends of the housing.

[0014] In some embodiments of the present invention, the driving member is a pressure plate that can be relatively close to or away from the housing, the transmission member is a rack fixedly connected to the pressure plate, and the housing has a support frame that matches the rack.

[0015] In some embodiments of the present invention, the support frame is T-shaped, including a long side and a short side perpendicular to the long side, the other end of the short side is fixed to the inner wall of the housing, and the long side has a channel for the rack to pass through.

[0016] In some embodiments of the present invention, the cross-section of the channel on the long side and the cross-section of the rack are both convex structures, and the teeth of the rack protrude from the side of the long side.

[0017] In some embodiments of the present invention, the housing further includes a radially arranged first partition plate, on which a gear assembly is rotatably connected for meshing with the transmission member to drive the rotation of the inductive turntable;

[0018] The gear assembly includes a first gear meshing with the rack, a double gear meshing with the first gear, and a gear shaft that passes through the partition and is coaxially connected to the electro-inductive turntable, the gear shaft meshing with the double gear.

[0019] In some embodiments of the present invention, multiple inductive bosses are evenly distributed along the circumferential direction, multiple friction sensing surfaces are evenly distributed on the inner wall of the housing, and two inductive turntables are provided and fixed to both ends of the gear shaft.

[0020] In some embodiments of the present invention, the housing also has two radially extending fixed rods arranged axially outside the two electro-inductive turntables to maintain the distance between the two electro-inductive turntables and prevent the gear assembly from dislodging.

[0021] In some embodiments of the present invention, a second partition is detachably provided inside the housing. The second partition is located on the side of the gear assembly away from the first partition. The gear shaft passes through the second partition and is rotatably disposed relative to the second partition. The housing also has a locking rod that passes through the side wall of the housing and is inserted into the side wall of the second partition.

[0022] The beneficial effects of this invention are as follows: By setting the friction sensing surface inside the housing and the inductive protrusions on the inductive turntable, when a landslide occurs, the ground movement is transmitted to the drive component. The displacement of the drive component drives the rotation of the inductive turntable, thereby generating friction between the inductive protrusions and the friction sensing surface. This leads to the accumulation and transfer of charge, generating an electrical signal. This electrical signal is captured by the circuit system and transmitted to external monitoring equipment, thereby realizing real-time monitoring and early warning of landslides. Compared with the prior art, this invention does not rely on external power supply, is simple to maintain, has low operating costs, and has a simple structure, making it easy to manufacture and promote. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the axial cross-sectional structure of the landslide detection device in an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the exploded disassembly structure of the landslide detection device in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the exploded disassembly structure of the landslide detection device in an embodiment of the present invention (end caps omitted);

[0027] Figure 4 This is a side view of the landslide detection device in an embodiment of the present invention;

[0028] Figure 5 As described in the embodiments of the present invention Figure 4 Sectional view along line AA in the middle;

[0029] Figure 6 As described in the embodiments of the present invention Figure 5 Enlarged view of section B in the image;

[0030] Figure 7 This is a schematic diagram of the drive structure of the gear assembly in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of a structure of an inductive turntable in an embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the unfolded structure inside the shell in an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the landslide detection device in an embodiment of the present invention.

[0034] Explanation of reference numerals in the attached drawings: 1. Housing; 11. Friction sensing surface; 12. Sleeve; 13. End cap; 14. Support frame; 14a. Short side; 14b. Long side; 2. Electrosensitive turntable; 21. Electrosensitive boss; 3. Drive assembly; 31. Drive component; 32. Transmission component; 4. Circuit system; 51. First partition; 52. Second partition; 6. Gear assembly; 61. First gear; 62. Double gear; 63. Gear shaft; 71. Fixed rod; 72. Locking rod. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] In the current field of landslide monitoring, while traditional detection equipment can provide the necessary monitoring data, it typically requires an external power source, which can present challenges in remote or inaccessible mountainous areas. To overcome this challenge, researchers have begun exploring the introduction of triboelectric nanogenerators (TENGs) into landslide monitoring equipment. TENGs utilize the principle of displacement current, employing the interaction of contact electrification and electrostatic induction to capture various forms of energy in the environment, such as wind energy, ocean wave energy, raindrop energy, vibration energy, and energy generated by human movement, and effectively convert them into electrical energy. TENGs have attracted attention due to their advantages, including high sensitivity, significant voltage output, simple structural design, economical cost, compact size, lightweight, high flexibility, diverse material choices, and environmental friendliness. Furthermore, TENGs show great promise in the development of self-powered sensors, including but not limited to water quality detection, wind speed measurement, biochemical analysis of trace liquids, and real-time vibration monitoring. For example, a TENG-based bending sensor has been proposed, using polydimethylsiloxane and a rubber tube coated with carbon electrodes as the friction layer of the sensing unit, which generates electrical signals during repeated bending. The sensor exhibits high sensitivity (output voltage of 5.20V / N under pressure and 1.61V / rad under bending) and good stability (more than 4×10⁴ cycles). However, the sensor is costly and complex to fabricate, and the fabrication process for self-powered sensors requires further improvement. This application proposes a TENG-based self-powered sensor that is easier to fabricate and is used for real-time monitoring of landslides.

[0039] In addition, a TENG-based cylindrical self-powered sensor composed of polytetrafluoroethylene and aluminum has been proposed in related technologies. This sensor is simple to prepare, low in cost, and highly sensitive (with a voltage output of 1.31V and a current output of 0.17μA when the relative sliding speed is 0.05m / s). However, it uses Bluetooth wireless communication technology to transmit the signal generated by the sensor, which cannot meet the actual needs of field landslide monitoring applications.

[0040] Therefore, the fabrication process of the above self-powered sensor still needs further improvement. This application proposes a TENG-based self-powered sensor that is easier to fabricate and is used for real-time monitoring of landslides. Some embodiments of this application are described below as examples.

[0041] like Figures 1 to 9 The landslide detection device shown includes a housing 1, an inductive rotating disk 2, a drive assembly 3, and a circuit system 4, as detailed below. Figure 1 and Figure 2As shown, the housing 1 has a cylindrical space inside, and the inner wall of the housing 1 has a friction-sensing surface 11; the electro-inductive turntable 2 is rotatably connected to the housing 1, and the peripheral side of the electro-inductive turntable 2 has radially protruding electro-inductive bosses 21; in some embodiments of the present invention, the friction-sensing surface 11 is the surface that contacts the electro-inductive bosses 21 and generates a triboelectric effect, and its material has a high electron affinity to ensure effective attraction or release of charge; for example, it can be made of polytetrafluoroethylene, alumina, or polydimethylsiloxane, etc.; the electro-inductive bosses 21 are components that contact the friction-sensing surface 11 and generate electrical signals through friction, and their material should have a high positive or negative charge to form significant charge separation. In some embodiments of the present invention, the electro-inductive bosses 21 can be The materials used are polyethylene, nylon, or polymethyl methacrylate. In some possible combinations, the inductive boss 21 is made of polyethylene and the friction sensing surface 11 is made of polytetrafluoroethylene. This combination can generate strong separation of negative and positive charges and is suitable for landslide detection areas that require efficient electrical signal generation. Alternatively, the inductive boss 21 can be made of nylon and the friction sensing surface 11 can be made of polydimethylsiloxane. This combination can provide good flexible contact and durability and is suitable for environments that require a certain degree of deformation adaptability and durability. Alternatively, the inductive boss 21 can be made of alumina and the friction sensing surface 11 can be made of polymethyl methacrylate and alumina. This combination is suitable for high-strength and high-stability applications, such as long-term monitoring equipment.

[0042] The drive assembly 3 includes a drive member 31 disposed outside the housing 1 and a transmission member 32 connected to the drive member 31 and extending into the housing 1 for driving the rotation of the induction turntable. The function of the drive assembly 3 is to generate movement by the external drive member 31 being squeezed by the ground movement during a landslide, and then transmit this movement to the interior to drive the rotation of the induction turntable 2. There are various specific drive structures, such as the meshing of gears and racks, or using a compressed or stretched spring as a drive source, releasing the spring under the action of external force to drive the rotation of the induction turntable 2, or driving it through other hydraulic or pneumatic power, etc. Those skilled in the art can choose according to their needs. The following part of the embodiments of the present invention will describe one of the methods in detail.

[0043] The circuit system 4 is housed inside the housing 1 and electrically connected to the friction sensing surface 11. It should be noted that the capture and transmission of electrical signals is a conventional setup in the art. For example, electrodes can be set on the friction sensing surface 11, and then the electrical signals can be processed by amplification or filtering circuits. The transmission of signals can be processed using communication signal lights.

[0044] For the specific detection principle, please refer to Figure 10In an embodiment of the present invention, the circuit system 4 is configured such that when the driving member 31 is subjected to an external force, it drives the transmission member 32 to rotate the electrosensitive turntable 2. The rotation of the electrosensitive turntable 2 causes the electrosensitive protrusion 21 to rub against the friction sensing surface 11, generating an electrical signal. The circuit system 4 captures the electrical signal and transmits it to an external monitoring device. That is, when a landslide occurs, the ground movement is transmitted to the detection device, causing the driving component 3 on the device to drive the rotation of the electrosensitive turntable 2, which in turn causes the electrosensitive protrusion 21 to rub against the friction sensing surface 11. This friction causes the transfer and accumulation of charge, thereby generating an electrical signal and realizing the self-powered function. Furthermore, in an embodiment of the present invention, this electrical signal also serves as an indication signal of landslide occurrence, which is captured by the internal circuitry of the device and transmitted to the external monitoring device, thereby realizing real-time monitoring and early warning of landslides.

[0045] In the above embodiment, by setting the friction sensing surface 11 inside the housing 1 and the inductive protrusion 21 on the inductive turntable 2, when a landslide occurs, the ground movement will be transmitted to the drive component 3. The displacement of the drive component 3 will drive the rotation of the inductive turntable 2, thereby generating friction between the inductive protrusion 21 and the friction sensing surface 11, which will lead to the accumulation and transfer of charge and generate an electrical signal. This electrical signal is captured by the circuit system 4 and transmitted to the external monitoring equipment, thereby realizing real-time monitoring and early warning of landslides. Compared with the prior art, the present invention does not rely on external power supply, is simple to maintain, has low operating cost, and has a simple structure, making it easy to manufacture and promote.

[0046] Based on the above embodiments, please refer to Figure 2 and Figure 3 In an embodiment of the present invention, the housing 1 includes a sleeve 12, which is cylindrical and assembled on the axial surface. Here, "cylindrical" refers to having a cylindrical space inside. The structure of dividing the housing into two parts for assembly facilitates the processing of the friction sensing surface 1111 on the inner wall of the sleeve 12. Specifically, the friction sensing surface 11 can be processed by grooving bonding or injection molding.

[0047] In some embodiments of the present invention, such as Figure 2 As shown, the housing 1 also includes end caps 13 detachably connected to both ends of the housing 12. The two end caps 13 are located at both ends of the housing 12 to form an internal sealed environment, improving the reliability of the device. The detachable connection facilitates subsequent maintenance. There are various specific detachable connection methods, such as a structure in which a groove is provided on the housing 12 and a boss is provided on the end cap 13 for embedded connection, or a structure in which screws or snaps are used to achieve detachability.

[0048] In the embodiments of this application, the specific structural form of the driving component 31 is as follows: Figure 2 and Figure 3 As shown, the driving component 31 is a pressure plate that can move relatively close to or away from the housing 12, and the transmission component 32 is a rack fixedly connected to the pressure plate. The housing 12 has a support frame 14 that matches the rack. It should be noted that in the embodiments of the present invention, the pressure plate is configured as an arc-shaped structure in the direction of the outer wall of the housing 12, and the inner diameter of the inner wall of the pressure plate is the same as the outer diameter of the outer wall of the housing 12. This structural form is beneficial to the movement of the pressure plate. The rack is used to mesh with the electro-inductive turntable 2 internally to drive the rotation of the electro-inductive turntable 2. An exemplary gear structure will be described in detail in the following embodiments of the present invention.

[0049] Please continue to refer to Figures 3 to 6 To ensure the reliability of the rack's movement within the housing 1, the support frame 14 is T-shaped, including a long side 14b and a short side 14a perpendicular to the long side 14b. The other end of the short side 14a is fixed to the inner wall of the housing 12, and the long side 14b has a channel for the rack to pass through. This T-shaped structure allows the support frame 14 to contact the interior of the housing 1 at three points, thereby improving the reliability of the support frame 14's fixation. In the embodiments of this application, the short side 14a is used for structural reinforcement, and the long side 14b is used for the rack's insertion.

[0050] Please continue to refer to Figure 6 In an embodiment of the present invention, the cross-section of the channel on the long side 14b and the cross-section of the rack are both convex structures, and the teeth of the rack protrude from the side of the long side 14b. For example... Figure 6 As shown, by setting the rack to a convex structure, the rack can move as far as possible within the long side 14b in the length direction. By setting the teeth to protrude, the reliability of meshing is ensured. The cooperation of the convex structure provides a guiding effect for the movement of the rack, which can improve the reliability of the transmission.

[0051] Please refer to Figure 1 and Figure 7In an embodiment of the present invention, the housing 1 further includes a radially arranged first partition 51, on which a gear assembly 6 is rotatably connected for meshing with the transmission member 32 to drive the rotation of the electro-inductive turntable 2; the gear assembly 6 includes a first gear 61 meshing with a rack, a double gear 62 meshing with the first gear 61, and a gear shaft 63 passing through the partition and coaxially connected with the electro-inductive turntable 2, the gear shaft 63 meshing with the double gear 62. Specifically, in the embodiments of this application, the gear shaft 63 is disposed at the center of the first partition 51 and is rotatably disposed relative to the first partition 51; the double gear 62 refers to a gear that is coaxial and has two sizes in the axial direction, the larger diameter gear meshes with the gear shaft 63, the first gear 61 meshes with the smaller diameter gear of the double gear 62, and the rack meshes with the first gear 61; in the embodiments of the present invention, by setting a suitable gear ratio, the force required to drive the electrosensitive turntable 2 is minimized. For example, the diameter of the first gear 61 is larger than the diameter of the smaller gear in the double gear 62, and the diameter of the larger gear in the double gear 62 is larger than the diameter of the gear shaft 63. This setting helps to reduce the force required to drive the electrosensitive turntable 2, thereby improving the detection sensitivity.

[0052] In embodiments of the present invention, in order to improve the uniformity of the generated electrical signal, such as Figure 8 and Figure 9 As shown, multiple inductive protrusions 21 are evenly distributed along the circumferential direction, and multiple friction sensing surfaces 11 are correspondingly evenly distributed on the inner wall of the housing 1. This arrangement reduces the angle of rotation of the inductive turntable 2 required to generate an electrical signal. Furthermore, please refer to... Figure 1 Two electro-inductive turntables 2 are provided and fixed to both ends of the gear shaft 63. The magnitude of the generated electrical signal is increased by rotating the two electro-inductive turntables 2.

[0053] In addition, please refer to Figure 2 and Figure 3 The housing 1 also has two radially extending fixing rods 71, which are axially arranged on the outer side of the two electro-inductive turntables 2 to maintain the distance between the two electro-inductive turntables 2 and prevent the gear assembly 6 from dislodging. The fixing rods 71 ​​can be inserted through an opening in the housing and fixed by snap-fit ​​or screw connection. In addition, lubricating oil or rollers can be provided on the surface of the fixing rods 71 ​​facing the electro-inductive turntables 2 to ensure that the two electro-inductive turntables 2 do not detach.

[0054] Please continue to refer to Figure 1 and Figure 2In an embodiment of the present invention, to ensure the stability of the gear shaft rotation, a second partition 52 is detachably provided inside the housing 1. The second partition 52 is located on the side of the gear assembly 6 away from the first partition 51. The gear shaft 63 passes through the second partition 52 and is rotatably disposed relative to the second partition 52. The housing 1 also has a locking rod 72 that passes through the side wall of the housing 1 and is inserted into the side wall of the second partition 52. In specific installation, bearings can be provided between the gear shaft 63 and the first partition 51 and the second partition 52. The locking rod 72 can be inserted into the side wall of the second partition 52 by screwing or plugging. Multiple locking rods 72 can be provided, or a single through-type locking rod can be used. This structural design improves the reliability of the device operation and facilitates the assembly and disassembly of the device.

[0055] Through the above-mentioned design, the landslide detection device of the present invention has a refined structure, small size, low manufacturing cost, is less affected by environmental conditions, and does not require external power supply or other monitoring methods, thereby improving the application prospects of the device.

[0056] Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A landslide detection device, characterized in that, include: A housing having a cylindrical space inside, and a friction-sensing surface on the inner wall of the housing; An inductive turntable is rotatably connected to the housing, and the circumference of the inductive turntable has radially protruding inductive bosses. The drive assembly includes a drive component disposed outside the housing and a transmission component connected to the drive component and extending into the housing for driving the induction turntable to rotate. The circuit system is disposed inside the housing and electrically connected to the friction sensing surface; The circuit system is configured such that when the driving member is subjected to an external force, it drives the transmission member to drive the rotation of the electrosensitive turntable, the rotation of the electrosensitive turntable causes the electrosensitive boss to rub against the friction sensing surface to generate an electrical signal, the circuit system captures the electrical signal and transmits it to an external monitoring device, and the housing includes a sleeve, which is cylindrical and spliced ​​together on the axial surface. The driving component is a pressure plate that can be relatively close to or away from the housing; the transmission component is a rack that is fixedly connected to the pressure plate; and the housing has a support frame that matches the rack. The support frame is T-shaped, including a long side and a short side perpendicular to the long side. The other end of the short side is fixed to the inner wall of the housing, and the long side has a channel for the rack to pass through. The cross-section of the channel on the long side and the cross-section of the rack are both convex structures, and the teeth of the rack protrude from the side of the long side.

2. The landslide detection device according to claim 1, characterized in that, The housing also includes end caps that are detachably connected to both ends of the housing.

3. The landslide detection device according to claim 1, characterized in that, The housing also has a radially arranged first partition plate, on which a gear assembly is rotatably connected for meshing with the transmission component to drive the rotation of the inductive turntable; The gear assembly includes a first gear meshing with the rack, a double gear meshing with the first gear, and a gear shaft that passes through the partition and is coaxially connected to the electro-inductive turntable, the gear shaft meshing with the double gear.

4. The landslide detection device according to claim 3, characterized in that, The inductive bosses are evenly distributed at intervals along the circumference, and the friction sensing surfaces are evenly distributed at intervals on the inner wall of the housing. Two inductive turntables are provided and fixed to both ends of the gear shaft.

5. The landslide detection device according to claim 4, characterized in that, The housing also has two radially extending fixed rods, which are axially arranged outside the two electro-inductive turntables to maintain the distance between the two electro-inductive turntables and prevent the gear assembly from dislodging.

6. The landslide detection device according to claim 3, characterized in that, A second partition is detachably disposed within the housing. The second partition is located on the side of the gear assembly away from the first partition. The gear shaft passes through the second partition and is rotatably disposed relative to it. The housing also has a member passing through its sidewall and... The locking rod is inserted into the side wall of the second partition.

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