Self-driven landslide rainfall sensor

Abstract

The invention provides a self-driven landslide rainfall sensor, and relates to the technical field of rainfall sensors, the self-driven landslide rainfall sensor comprises a rainwater collection assembly, the rainwater collection assembly comprises a support rod, a turntable and a plurality of water containers, the turntable is rotatably arranged on the support rod, all the water containers are arranged around the periphery of the turntable at intervals, and each water container is connected with the turntable through a fixing rod; a shifting rod is arranged on the fixed rod; the sensing assembly comprises an outer frame and a warping plate, the outer frame is provided with an arc-shaped contact surface, a nano friction layer is arranged on the contact surface, the warping plate is rotatably connected with the outer frame, one end of the warping plate extends into the outer frame and is provided with a metal friction layer capable of being in contact with the contact surface, and the other end of the warping plate extends out of the outer frame and is relatively warped up; and a shifting rod on a fixed rod is supported at the tilted end of the warping plate. The beneficial effects of the invention are that the rotation of the turntable enables each water container to collect rainwater in sequence, then the rocker is driven to rotate in sequence, the rocker rotates each time to generate an electric signal, and the rainfall can be calculated according to the electric signal.

Description

Technical Field

[0001] The invention relates to the technical field of rainfall sensors, and in particular to a self-driven landslide rainfall sensor. Background Art

[0002] Rainfall sensors play a vital role in the field of landslide monitoring. Rainfall is an important factor in triggering landslides, especially in areas with unstable geological structures or complex terrain. Excessive rainfall may cause soil saturation, which in turn triggers landslides. Therefore, accurate monitoring of rainfall can provide an important basis for landslide early warning.

[0003] Traditional rain sensors mainly include float type, vibration type, lidar type and other types. Their working principle is mainly to calculate precipitation by measuring the volume or weight of rainwater. For example, the float type rain sensor calculates the rainfall by measuring the rising height of the float after the rainwater enters the container, while the vibration type rain sensor calculates the rainfall by measuring the vibration amplitude caused by raindrops falling on the sensor surface, and the lidar type rain sensor uses lidar technology to measure rainfall. However, traditional rain sensors need to be connected to the power grid or other power sources to work, and cannot meet the long-term and stable landslide rainfall monitoring requirements. Summary of the invention

[0004] In view of this, in order to solve the problem of long-term stable landslide rainfall monitoring, an embodiment of the present invention provides a self-driven landslide rainfall sensor.

[0005] An embodiment of the present invention provides a self-driving landslide rainfall sensor, comprising:

[0006] A rainwater collection assembly, comprising a support rod, a rotating disk and a plurality of water containers, wherein the rotating disk is rotatably arranged on the support rod, and all water containers are arranged at intervals around the outer periphery of the rotating disk, and each of the water containers is connected to the rotating disk via a fixing rod, and a lever is provided on the fixing rod;

[0007] And a sensor component, which includes an outer frame and a seesaw, the outer frame has an arc-shaped contact surface, the contact surface is provided with a nano friction layer, the seesaw is rotatably connected to the outer frame, one end of the seesaw extends into the outer frame and is provided with a metal friction layer that can contact the contact surface, the other end of the seesaw extends outside the outer frame and is relatively tilted, a lever on the fixed rod is supported on the tilted end of the seesaw, the water container collects a predetermined volume of rainwater and can drive the lever to rotate the seesaw, so that the metal friction layer contacts the nano friction layer and generates friction electricity to generate a rainfall detection signal.

[0008] Furthermore, the outer frame includes a support plate and a contact plate, the contact plate is arc-shaped, the contact plate is arranged on one side of the support plate and the two ends are respectively connected to the two ends of the support plate, the inner side surface of the contact plate forms the contact surface, and the rocker plate passes through the support plate and is rotatably connected to the support plate.

[0009] Furthermore, the rocker is provided with a rotating shaft, the support plate is provided with a mounting groove, the rotating shaft is rotatably arranged in the mounting groove, and the length of the rocker located on the outer side of the support plate is shorter than the length of the rocker located on the inner side of the support plate.

[0010] Furthermore, the rotating shaft is coaxially arranged with the contact plate.

[0011] Furthermore, the outer frame further comprises two side baffles, and the side baffles are respectively arranged on two sides of the contact plate to close the two sides of the contact plate.

[0012] Furthermore, the number of the nano-friction layers is set to be multiple, and the nano-friction layers are arranged on the contact surface at intervals.

[0013] Furthermore, all water containers are evenly spaced around the periphery of the turntable, the fixing rod is radially arranged along the turntable, the shifting rod is perpendicular to the fixing rod, one of the fixing rods is horizontally arranged and the shifting rod on the fixing rod is supported on one end of the tilted rocker.

[0014] Furthermore, the water container is in the shape of a bowl with an inner diameter gradually decreasing from top to bottom.

[0015] Furthermore, the turntable includes a bearing and an outer rotating ring sleeved on the bearing, the upper end of the support column is provided with a horizontally arranged installation shaft, the bearing is sleeved on the installation shaft, and the inner end of each of the fixing rods is connected to the outer rotating ring.

[0016] Furthermore, it also includes a base, and the lower end of the support rod and the lower end of the outer frame are both fixed on the base.

[0017] The beneficial effects brought about by the technical solution provided by the embodiment of the present invention are:

[0018] 1. A self-driven landslide rainfall sensor of the present invention collects rainwater through a water container at the end of a fixed rod supported on a seesaw when monitoring rainfall. After a predetermined volume of rainwater is collected, the gravity of the water container can act on a lever on the fixed rod to press down one end of the seesaw to rotate the seesaw. The metal friction layer at the other end of the seesaw rotates and rubs against the nano friction layer to generate an electrical signal. The rotation of the turntable will cause each water container to collect rainwater in turn, and then each water container will drive the seesaw to rotate in turn. Each rotation of the seesaw will generate an electrical signal, so the amount of rainfall can be calculated based on the detected electrical signal.

[0019] 2. A self-driven landslide rainfall sensor of the present invention has multiple nano friction layers arranged in the outer frame. Each time the seesaw rotates, it will contact and rub with each nano friction layer in turn to generate an electrical signal. The change in rainfall can be calculated based on the change in the electrical signal, thereby obtaining the change rate of rainfall over a period of time.

[0020] 3. In the self-driving landslide rainfall sensor of the present invention, when monitoring rainfall, the metal friction layer rotates and rubs against the nano friction layer to generate an electrical signal, which can generate electrical energy to power the self-driving landslide rainfall sensor. No external power supply is required, so that the self-driving landslide rainfall sensor can be used for long-term and stable landslide rainfall monitoring, and is more suitable for landslide field environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a stereoscopic diagram of a self-driven landslide rainfall sensor of the present invention;

[0022] Figure 2 It is a main diagram of a self-driven landslide rainfall sensor of the present invention;

[0023] Figure 3 is a schematic diagram of a rainwater harvesting assembly;

[0024] Figure 4 It is a diagram of the internal structure of the sensor component;

[0025] Figure 5 It is a working schematic diagram of a self-driven landslide rainfall sensor of the present invention;

[0026] Figure 6 It is a diagram of the charge transfer process between the metal friction layer and the nano friction layer during the working process of a self-driven landslide rainfall sensor of the present invention.

[0027] In the figure: 100, self-driven landslide rainfall sensor; 200, landslide; 1, rainwater collection assembly; 101, support rod; 102, water container; 103, fixing rod; 104, lever; 105, bearing; 106, outer rotating ring; 107, mounting shaft; 108, threaded rod; 2, sensor assembly; 201, support plate; 202, contact plate; 203, rocker; 204, side baffle; 205, mounting groove; 206, rotating shaft; 207, contact surface; 3, base; 301, fixing hole. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will further describe the embodiments of the present invention in conjunction with the accompanying drawings. The following is a preferred embodiment of the present invention, which is intended to provide a basic understanding of the present invention, but is not intended to confirm the key or decisive elements of the present invention or to limit the scope of protection.

[0029] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0031] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in the subsequent drawings. At the same time, it should be understood that for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0032] In the description of the present invention, it should be noted that the circuits, electronic components and modules involved in the present invention are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present invention does not involve improvements to the internal structure and methods.

[0033] It should be further explained that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Please refer to Figure 1 , 2 5, the embodiment of the present invention provides a self-propelled landslide rainfall sensor 100, which is mainly used for monitoring rainfall, and is particularly suitable for monitoring rainfall in a short period of time such as heavy rain, rainstorm, heavy rainstorm, and extremely heavy rainstorm during landslide disaster monitoring. The self-propelled landslide rainfall sensor 100 mainly includes a rainwater collection component 1 and a sensor component 2.

[0035] Please refer to Figure 3The rainwater collection assembly 1 is mainly used for collecting rainwater during rainfall. The rainwater collection assembly 1 comprises a support rod 101, a rotating disk and a plurality of water containers 102. The rotating disk is rotatably arranged on the support rod 101. All water containers 102 are arranged at intervals around the outer periphery of the rotating disk. Each of the water containers 102 is connected to the rotating disk via a fixing rod 103. The fixing rod 103 is provided with a lever 104.

[0036] Please refer to Figure 4 The sensor assembly 2 includes an outer frame and a seesaw 203. The outer frame has an arc-shaped contact surface 207. A nano friction layer (not shown in the figure) is provided on the contact surface 207. The seesaw 203 is rotatably connected to the outer frame. One end of the seesaw 203 extends into the outer frame and is provided with a metal friction layer (not shown in the figure) that can contact the contact surface 207. The other end of the seesaw 203 extends outside the outer frame and is relatively tilted. A lever 104 on the fixed rod 103 is supported on the tilted end of the seesaw 203. The water container 102 collects a predetermined volume of rainwater and can drive the lever 104 to rotate the seesaw 203, so that the metal friction layer contacts the nano friction layer and generates friction electricity to generate a rainfall detection signal.

[0037] Specifically, the support rod 101 is generally arranged vertically. The turntable includes a bearing 105 and an outer rotating ring 106 sleeved on the bearing 105. The upper end of the support column is provided with a horizontally arranged installation shaft 107, the bearing 105 is sleeved on the installation shaft 107, and the inner end of each of the fixing rods 103 is connected to the outer rotating ring 106, and the rotating ring can rotate around the installation shaft 107.

[0038] All water containers 102 are generally evenly spaced around the periphery of the turntable. The number of the water containers 102 can be flexibly set according to the actual application scenario. It should be noted that the spacing between the water containers 102 should be reasonable to ensure that when the water container 102 supported at the end of the fixed rod 103 at the tilted end of the rocker 203 collects rainwater, the other water containers 102 cannot collect rainwater or the collected rainwater flows out directly and cannot be collected. As described in the present embodiment, the number of water containers 102 is set to six, it can be understood that the number of water containers 102 can also be set to other numbers.

[0039] The fixed rod 103 is arranged radially along the turntable, one end of the fixed rod 103 is fixedly connected to the outer rotating ring 106, and the other end is fixedly connected to the water container 102. Here, one end of the fixed rod 103 is provided with a threaded hole, and the side of the water container 102 is provided with a threaded rod 108, and the threaded rod 108 is threadedly connected to the threaded hole. The lever 104 is arranged vertically with the fixed rod 103, and all the levers are located on the same circumference. When the rainfall is not monitored, one of the fixed rods 103 is arranged horizontally and the lever 104 on the fixed rod 103 is supported on one end of the tilted rocker 203.

[0040] It should be noted that the water container 102 is generally configured as an open container with an upper end, and rainwater falls into the water container from the upper end of the water container 102. In some embodiments, the water container 102 is a bowl-shaped container with a gradually decreasing inner diameter from top to bottom, which has a better rainwater collection effect.

[0041] The outer frame is arranged in front of the rainwater collection assembly 1, and includes a support plate 201 and a contact plate 202. The contact plate 202 is arc-shaped and can be arranged as a semicircular arc-shaped plate. The contact plate 202 is arranged on one side of the support plate 201 and its two ends are respectively connected to the two ends of the support plate 201, and the inner side surface of the contact plate 202 forms the contact surface 207.

[0042] The seesaw 203 penetrates the support plate 201 and is rotatably connected to the support plate 201. Here, the seesaw 203 is provided with a rotating shaft 206, and the support plate 201 is provided with a mounting groove 205, which is a rectangular groove that penetrates the left and right sides of the support plate 201, and the rotating shaft 206 is rotatably arranged in the mounting groove 205. The mounting grooves 205 are extended from both ends of the seesaw 203, respectively, so that the seesaw 203 forms a lever mechanism.

[0043] In some embodiments, in order to ensure that the metal friction layer can stably contact the nano friction layer when the seesaw 203 rotates, the rotating shaft 206 is coaxially arranged with the contact plate 202, so that when the seesaw 203 rotates, one end of the seesaw 203 located inside the contact plate 202 moves exactly along the inner side surface of the contact plate 202, that is, the metal friction layer moves exactly along the inner side surface of the contact plate 202.

[0044] It should be noted that the length of the seesaw 203 located outside the support plate 201 is smaller than the length of the seesaw located inside the support plate 201. In this way, the mass of the seesaw 203 located outside the support plate 201 is smaller than the mass of the seesaw located inside the support plate 201, so that the seesaw 203 is stably in a tilted state.

[0045] In some embodiments, the number of the nano friction layers is set to be multiple, such as three in this embodiment. Each of the nano friction layers is arranged on the contact surface 207 at intervals. Generally, each of the nano friction layers is arranged at equal intervals. When the seesaw 203 rotates, the metal friction layer contacts each of the nano friction layers in turn.

[0046] In some other embodiments, the outer frame also includes two side baffles 204, which are semicircular and respectively arranged on both sides of the contact plate 202, so that the two sides of the contact plate 202 are closed, that is, the outer frame is closed to prevent rainwater, dust, etc. from entering the outer frame, thereby effectively protecting the metal friction layer and the nano friction layer.

[0047] In addition, the self-driving landslide rainfall sensor 100 further includes a base 3, the lower end of the support rod 101 and the lower end of the outer frame are both fixed on the base 3, and the base 3 is provided with a fixing hole 301. When the self-driving landslide rainfall sensor 100 monitors the rainfall of the landslide 200, the base 3 is installed and fixed on the landslide 200 through the fixing hole 301.

[0048] The material of the nano friction layer and the material of the metal friction layer can be flexibly selected according to the two friction materials constituting the friction nano generator. For example, in this embodiment, the material of the nano friction layer is a polyimide film (kapton), and the material of the metal friction layer is aluminum.

[0049] The self-driving landslide rainfall sensor 100 is installed and fixed on the landslide 200 to monitor the rainfall. The specific process is as follows:

[0050] In the initial state, one of the fixing rods 103 is horizontally arranged, and one end of the seesaw 203 located outside the outer frame is tilted upward, and the water container 102 at the end of the fixing rod 103 begins to collect rainwater. Since the gravity of the water container 102 itself is not enough to drive the lever 104 to push the seesaw 203 downward to rotate;

[0051] As the amount of rainwater in the water container 102 gradually increases, the gravity of the water container 102 gradually increases until the amount of rainwater in the water container 102 reaches a predetermined volume. The gravity of the water container 102 can just drive the lever 104 to push the seesaw 203 downward to rotate. The metal friction layer at the end of the seesaw 203 contacts and rubs against the nano friction layer on the inner side of the contact plate 202 to generate an electrical signal. The predetermined volume is determined by the lever mechanism of the seesaw 203, that is, the predetermined volume of rainwater and the water container 102 just balance the lever mechanism of the seesaw 203. The predetermined volume can be obtained by simulation or pre-test.

[0052] The lever 104 continuously pushes the seesaw 203 downward to rotate until the lever 104 separates from the seesaw 203 and moves to below the lever 104, so that the seesaw 203 is released, and the seesaw 203 rotates around the rotation axis 206 to restore the end located outside the outer frame to tilt upward. At the same time, the next fixed rod 103 rotates to a horizontal position, so that the lever 104 on the fixed rod 103 is supported on the end of the seesaw 203 that tilts upward.

[0053] The water container 102 at the end of the next fixed rod 103 repeats the above rainwater collection process, and the lever 104 pushes the rocker 203 downward to rotate, so that the metal friction layer and the nano friction layer contact again and generate electrical signals through friction.

[0054] In this way, after collecting a predetermined volume of rainwater, each water container 102 will drive the lever 104 to push the rocker 203 downward to rotate, so that the metal friction layer and the nano friction layer rub against each other to generate an electrical signal. Since each water container 102 collects a predetermined volume of rainwater each time an electrical signal is generated, the volume of rainwater collected by the rainwater collection assembly 1 can be calculated, and thus the rainfall can be calculated.

[0055] In addition, when the number of the nano friction layers is set to be multiple, each water container 102 will drive the lever 104 to push the rocker 203 downward to rotate after collecting a predetermined volume of rainwater, so that the metal friction layer rubs with each of the nano friction layers in turn to generate an electrical signal. Each of the nano friction layers is connected to a charge tester through a wire, and it is found that the charge transfer process between the metal friction layer and each of the nano friction layers in turn is as follows:

[0056] like Figure 6 As shown in (a), in the initial state, the seesaw 203 does not rotate, the metal friction layer and the nano friction layer do not contact each other, and no charge transfer occurs. Figure 6As shown in (b), the lever 104 pushes the seesaw 203 downward to rotate, and the metal friction layer contacts and rubs with the first nano friction layer I, generating charge transfer, and an electrical signal is detected in the first nano friction layer I. Figure 6 As shown in (c), the lever 104 continues to push the seesaw 203 downward to rotate, and the metal friction layer contacts and rubs with the second nano friction layer II, generating charge transfer, and an electrical signal is detected in the second nano friction layer II. Figure 6 As shown in (d), the lever 104 continues to push the seesaw 203 downward to rotate, and the metal friction layer contacts and rubs with the third nano friction layer III, generating charge transfer, and an electrical signal is detected in the third nano friction layer III. In this way, the change of the electrical signal can be obtained, and the change rate of rainfall over a period of time can be inferred from the change rate of the electrical signal.

[0057] In this article, the directional words such as front, back, top, and bottom involved are defined by the positions of the parts in the drawings and the positions of the parts relative to each other, just for the sake of clarity and convenience in expressing the technical solution. It should be understood that they are relative concepts and can change accordingly according to different ways of use and placement, and the use of the directional words should not limit the scope of protection claimed in this application.

[0058] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A self-propelled landslide rainfall sensor, It is characterized in that include: A rainwater collection assembly, comprising a support rod, a rotating disk and a plurality of water containers, wherein the rotating disk is rotatably arranged on the support rod, and all water containers are arranged at intervals around the outer periphery of the rotating disk, and each of the water containers is connected to the rotating disk via a fixing rod, and a lever is provided on the fixing rod; And a sensor component, which includes an outer frame and a seesaw, the outer frame has an arc-shaped contact surface, the contact surface is provided with a nano friction layer, the seesaw is rotatably connected to the outer frame, one end of the seesaw extends into the outer frame and is provided with a metal friction layer that can contact the contact surface, the other end of the seesaw extends outside the outer frame and is relatively tilted, a lever on the fixed rod is supported on the tilted end of the seesaw, the water container collects a predetermined volume of rainwater and can drive the lever to rotate the seesaw, so that the metal friction layer contacts the nano friction layer and generates friction electricity to generate a rainfall detection signal.

2. A self-propelled landslide rainfall sensor as claimed in claim 1, Features: The outer frame includes a support plate and a contact plate, the contact plate is arc-shaped, the contact plate is arranged on one side of the support plate and two ends are respectively connected to the two ends of the support plate, the inner side surface of the contact plate forms the contact surface, and the rocker plate passes through the support plate and is rotatably connected to the support plate.

3. A self-propelled landslide rainfall sensor as claimed in claim 2, Features: The seesaw is provided with a rotating shaft, the support plate is provided with a mounting groove, the rotating shaft is rotatably arranged in the mounting groove, and the length of the seesaw located on the outer side of the support plate is shorter than the length of the seesaw located on the inner side of the support plate.

4. A self-propelled landslide rainfall sensor as claimed in claim 3, Features: The rotating shaft is coaxially arranged with the contact plate.

5. A self-propelled landslide rainfall sensor as claimed in claim 2, Features: The outer frame further comprises two side baffles, and the side baffles are respectively arranged on two sides of the contact plate to close the two sides of the contact plate.

6. A self-propelled landslide rainfall sensor as claimed in claim 1, Features: The number of the nano friction layers is set to be multiple, and the nano friction layers are arranged on the contact surface at intervals.

7. A self-propelled landslide rainfall sensor as claimed in claim 1, Features: All water containers are evenly spaced around the outer periphery of the turntable, the fixing rod is radially arranged along the turntable, the shifting rod is vertically arranged with the fixing rod, one of the fixing rods is horizontally arranged and the shifting rod on the fixing rod is supported on one end of the tilted seesaw.

8. A self-propelled landslide rainfall sensor as claimed in claim 1, Features: The water container is in the shape of a bowl with an inner diameter gradually decreasing from top to bottom.

9. A self-propelled landslide rainfall sensor as claimed in claim 1, Features: The turntable includes a bearing and an outer rotating ring sleeved on the bearing. The upper end of the support column is provided with a horizontally arranged installation shaft, the bearing is sleeved on the installation shaft, and the inner end of each fixing rod is connected to the outer rotating ring.

10. A self-propelled landslide rainfall sensor as claimed in claim 1, Features: It also includes a base, and the lower end of the support rod and the lower end of the outer frame are both fixed on the base.

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