Portable soil erosion measuring tool

Abstract

The invention relates to the technical field of measuring tools, in particular to a portable soil erosion measuring tool. Firstly, the supporting pipe column is fixed to the ground; then the distance between the laser range finder and the ground is measured once every first preset duration and sent to the controller; the controller sends the distance between the controller and the ground to the cloud server through the communication module; the cloud server calculates the soil erosion amount of the to-be-measured area based on the distance between the to-be-measured area and the ground within a past second preset time length; when the ground soil is eroded, the distance between the laser range finder and the ground increases along with time, and the erosion amount of the ground soil can be calculated according to the distance between the laser range finder and the ground every first preset duration. According to the scheme provided by the invention, the scheme for measuring the soil erosion amount is more efficient and accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring tools, and particularly to a portable soil erosion measuring tool. Background Art

[0002] Soil erosion is an environmental problem that urgently needs to be addressed at present, and it has had a profound impact on fields such as agriculture, forestry, and water conservancy. In order to accurately evaluate the intensity of soil erosion and carry out effective prevention and control, it is necessary to monitor and measure soil erosion in real time; currently, the commonly used soil erosion measurement schemes mainly include contact measurement schemes and non-contact measurement schemes. The contact measurement schemes mainly include runoff plot observation method, stake insertion monitoring method, filling method, etc.; the non-contact measurement methods mainly include remote sensing images, photogrammetry, three-dimensional laser scanning and other methods. The above-mentioned soil erosion measurement schemes all have certain defects and limitations, that is, they cannot obtain the soil erosion data of the monitoring area in a timely and efficient manner. Summary of the Invention

[0003] The main object of the present invention is to provide a portable soil erosion measuring tool, aiming to solve the problem that the current soil erosion technical scheme cannot obtain the soil erosion data of the monitoring area in a timely and efficient manner.

[0004] To achieve the above object, the technical solution proposed by the present invention is:

[0005] A portable soil erosion measuring tool, comprising a support pipe column, a lifting seat, a first adjusting component, a laser rangefinder, a controller, a communication module, a cloud server and a monitoring terminal; the support pipe column is used for vertically embedding into the ground of the area to be measured; the lifting seat is vertically slidably sleeved on the support pipe column; the laser rangefinder is connected to the lifting seat; the laser emission direction of the laser rangefinder is parallel to the central axis of the support pipe column; a bubble level is arranged at the top of the support pipe column; the first adjusting component is used to drive the lifting seat to slide relative to the support pipe column and fix the position of the lifting seat; both the communication module and the laser rangefinder are electrically connected to the controller; the communication module is used to communicate with the cloud server; the monitoring terminal is communicatively connected to the cloud server; the laser rangefinder is used for: measuring the distance from the ground at intervals of a first preset time period and sending it to the controller; the controller is used for: sending the distance between the laser rangefinder and the ground to the cloud server through the communication module; the cloud server is used for: calculating the soil erosion amount of the area to be measured based on the distance between the laser rangefinder and the ground in the past second preset time period, where the second preset time period is greater than the first preset time period.

[0006] Preferably, it further includes a first support arm, a second support arm, a first protective cover and a second protective cover; the first support arm and the second support arm are respectively connected to two sides of the lifting seat; the first protective cover is arranged at one end of the first support arm away from the lifting seat; the laser rangefinder is arranged in the first protective cover; a vertical through hole is formed at the bottom of the first protective cover; the emitting end of the laser rangefinder is directly above the vertical through hole; the second protective cover is arranged at one end of the second support arm away from the lifting seat; the controller and the communication module are both arranged in the second protective cover.

[0007] Preferably, it further includes a monitoring terminal communicatively connected to the cloud server; the cloud server is further configured to: send the distance between the laser rangefinder and the ground, and the soil erosion amount of the area to be measured to the monitoring terminal for display.

[0008] Preferably, it further includes a storage battery; the storage battery is used to supply power to the controller, the communication module and the laser rangefinder; the storage battery is arranged in the second protective cover.

[0009] Preferably, the calculation formula for the soil erosion amount calculated based on the distance between the laser rangefinder and the ground in the past second preset duration is:

[0010]

[0011] In the formula, Q is the soil erosion amount of the area to be measured; h t is the distance between the laser rangefinder and the ground obtained at the current moment; ΔT is the second preset duration, and T ref is the reference duration; h t-ΔT is the distance between the laser rangefinder and the ground obtained in the previous second preset duration; ρ is the bulk density of the soil in the area to be measured; S is the area of the area to be measured.

[0012] Preferably, the first adjusting component includes a first rotating rod, a first connecting seat and a second connecting seat; the first connecting seat and the second connecting seat are both connected to the outer wall of the support pipe column; the first connecting seat is above the lifting seat; the second connecting seat is below the lifting seat; two ends of the first rotating rod are respectively rotatably connected to the first connecting seat and the second connecting seat; the first rotating rod is parallel to the central axis of the support pipe column; the first rotating rod is provided with external threads; a threaded hole is formed through the lifting seat; the first rotating rod is fitted and screwed into the threaded hole.

[0013] Preferably, the first adjusting component further includes a turning handle; the turning handle is connected to the top of the first rotating rod.

[0014] Preferably, it further includes a support plate, a reinforcing rod, and a second adjusting member; the support pipe column is hollow inside and open at the bottom; the reinforcing rod is movably embedded inside the support pipe column; the support plate is sleeved on the support pipe column and is close to the bottom of the support pipe column; the support plate is perpendicular to the central axis of the support pipe column; the reinforcing rod and the support pipe column share the same central axis; the second adjusting member is used to drive the reinforcing rod to move relative to the support pipe column so that the reinforcing rod extends out of or retracts into the support pipe column.

[0015] Preferably, the second adjusting member includes a second rotating rod, a nut sleeve, a third connecting seat, a fourth connecting seat, a first connecting rod, and a second connecting rod; the third connecting seat and the fourth connecting seat are arranged inside the support pipe column; both ends of the second rotating rod are respectively connected to the third connecting seat and the fourth connecting seat; the second rotating rod and the support pipe column share the same central axis; the second rotating rod is provided with an external thread; the nut sleeve is fitted and sleeved on the second rotating rod; the nut sleeve is located between the third connecting seat and the fourth connecting seat; the fourth connecting seat is closer to the bottom of the support pipe column than the third connecting seat; both the first connecting rod and the second connecting rod slide through the fourth connecting seat; one end of both the first connecting rod and the second connecting rod is connected to the nut sleeve; both the first connecting rod and the second connecting rod are parallel to the central axis of the support pipe column and are symmetric about the central axis of the support pipe column; the other ends of both the first connecting rod and the second connecting rod are connected to the reinforcing rod; the reinforcing rod is located on the side of the fourth connecting seat away from the third connecting seat.

[0016] Preferably, the second adjusting member further includes a motor; the storage battery is used to supply power to the motor; the motor is arranged inside the support pipe column; the motor is used to drive the second rotating rod to rotate; the end of the reinforcing rod away from the fourth connecting seat is provided with a pointed head; a plurality of barbs are connected to the outer wall of the reinforcing rod; the first connecting rod and the second connecting rod are symmetric about the second rotating rod.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The portable soil erosion measurement tool proposed by the present invention can obtain soil erosion data in the monitoring area more timely and efficiently. During specific use, first dig a pile hole in the area to be measured, and embed the support pipe column into the pile hole to fix the support pipe column to the ground. During the fixing process, the support pipe column should be kept vertical by observing the bubble level, so that the emission direction of the laser rangefinder is also vertical. Then, adjust the lifting seat to make the distance between the laser rangefinder and the ground reach an initial preset value (for example, 1 m). Then, measure the distance from the ground every first preset time interval through the laser rangefinder and send it to the controller. The controller sends the distance from the ground to the cloud server through the communication module. The cloud server calculates the soil erosion amount in the area to be measured based on the distance from the ground in the past second preset time interval. When the ground soil is eroded, the distance measured by the laser rangefinder from the ground will increase with time. Therefore, the soil erosion amount of the ground soil can be calculated based on the distance from the ground measured by the laser rangefinder every first preset time interval. The scheme for measuring the soil erosion amount proposed by the present invention is more efficient and accurate, and does not require manual operation, which is more convenient and fast. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0020] Figure 1 It is a schematic diagram of the external structure of an embodiment of the portable soil erosion measurement tool proposed by the present invention;

[0021] Figure 2 It is a schematic diagram of the partial structure of an embodiment of the portable soil erosion measurement tool proposed by the present invention.

[0022] Description of the Reference Numerals:

[0023] 110, support pipe column; 120, lifting seat; 130, first support arm; 140, second support arm; 150, first protective cover; 160, second protective cover; 170, vertical through hole; 180, first rotating rod; 190, first connecting seat; 210, second connecting seat; 220, rotating handle; 230, bubble level; 240, support plate; 250, reinforcing rod; 260, pointed head; 270, barbs; 290, third connecting seat; 310, fourth connecting seat; 320, second rotating rod; 330, nut sleeve; 340, first connecting rod; 350, second connecting rod; 360, motor.

[0024] The realization, functional features and advantages of the objectives of the present invention will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0026] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, the descriptions such as "first" and "second" in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0028] In the present invention, unless otherwise clearly defined and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. 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.

[0029] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0030] The present invention provides a portable soil erosion measurement tool.

[0031] As shown in the attached Figure 1 - attached Figure 2As shown, in an embodiment of a portable soil erosion measurement tool proposed by the present invention, the portable soil erosion measurement tool includes a support pipe column 110, a lifting seat 120, a first adjustment component, a laser rangefinder (not shown), a controller (such as a single-chip microcomputer, not shown), a communication module (such as a GMS wireless communication module, not shown), a cloud server (not shown), and a monitoring terminal (not shown); the support pipe column 110 is used to vertically embed into the ground of the area to be measured; the lifting seat 120 is vertically slidably sleeved on the support pipe column 110; the laser rangefinder is connected to the lifting seat 120; the laser emission direction of the laser rangefinder is parallel to the central axis of the support pipe column 110; a bubble level 230 is provided at the top of the support pipe column 110; the first adjustment component is used to drive the lifting seat 120 to slide relative to the support pipe column 110 and fix the position of the lifting seat 120; both the communication module and the laser rangefinder are electrically connected to the controller; the communication module is used to communicate with the cloud server; the monitoring terminal is communicatively connected to the cloud server; the laser rangefinder is used to: measure the distance from the ground every first preset time period (such as 1 hour) and send it to the controller; the controller is used to: send the distance between the laser rangefinder and the ground to the cloud server through the communication module; the cloud server is used to: calculate the soil erosion amount of the area to be measured based on the distance between the laser rangefinder and the ground in the past second preset time period (such as 3 days), where the second preset time period is greater than the first preset time period.

[0032] The portable soil erosion measurement tool proposed by the present invention can obtain soil erosion data in the monitoring area more timely and efficiently; specifically in use, first dig a pile hole in the area to be measured, embed the support pipe column 110 into the pile hole to fix the support pipe column 110 to the ground. During the fixing process, the support pipe column 110 should be kept vertical by observing the bubble level 230, so that the emission direction of the laser rangefinder is also vertical; then adjust the lifting seat 120 to make the distance between the laser rangefinder and the ground reach an initial preset value (such as 1 m), and then measure the distance from the ground every first preset time period through the laser rangefinder and send it to the controller; the controller sends the distance from the ground to the cloud server through the communication module; the cloud server calculates the soil erosion amount of the area to be measured based on the distance from the ground in the past second preset time period; when the ground soil is eroded, the distance measured by the laser rangefinder from the ground will increase with time, so the soil erosion amount of the ground soil can be calculated through the distance from the ground measured by the laser rangefinder every first preset time period. The scheme for measuring the soil erosion amount proposed by the present invention is more efficient and accurate, and does not require manual operation, which is more convenient and fast.

[0033] Meanwhile, this portable soil erosion measurement tool also includes a fiber Bragg grating laser interferometer: the fiber Bragg grating laser interferometer replaces the traditional laser rangefinder to measure the distance to the ground. Using the optical path difference interference principle, the fiber Bragg grating laser interferometer can achieve a resolution of 0.01 mm and detect fine losses on the soil surface layer (such as 0.1 mm erosion caused by a single rainfall).

[0034] The outside of the fiber Bragg grating laser interferometer can also be covered with a constant temperature vacuum protective cover: nitrogen is filled in the constant temperature vacuum protective cover and constant temperature control is achieved (the temperature difference is controlled within ±0.1 °C) to avoid the optical path deformation caused by temperature fluctuations.

[0035] In addition, a piezoelectric feedback system is set between the lifting seat and the support pipe column to cancel the measurement jitter caused by environmental vibrations (such as wind force and animal activities). The fiber Bragg grating laser interferometer can also synchronously collect 1 kHz high-frequency raw data and 1 Hz low-frequency filtered data, and separate noise and real signals through wavelet transform.

[0036] Meanwhile, the acquisition period of the fiber Bragg grating laser interferometer is 1 hour (that is, it is acquired once per hour); during the acquisition process, the fiber Bragg grating laser interferometer continuously takes 1000 sampling points within 30 seconds for mean filtering.

[0037] The fiber Bragg grating laser interferometer can also collect data in an event-triggered mode: when the detected distance change rate to the ground > 0.05 mm / min (such as heavy rain scouring), the fiber Bragg grating laser interferometer automatically switches to continuous sampling 10 times per second and continues until the rate returns to normal.

[0038] The fiber Bragg grating laser interferometer can also adopt the Piecewise Aggregate Approximation (PAA) algorithm to compress high-frequency data into trend feature packets, reducing the transmission bandwidth requirements.

[0039] In addition, this portable soil erosion measurement tool also includes a first support arm 130, a second support arm 140, a first protective cover 150, and a second protective cover 160; the first support arm 130 and the second support arm 140 are respectively connected to both sides of the lifting seat 120; the first protective cover 150 is arranged at one end of the first support arm 130 away from the lifting seat 120; the laser rangefinder is arranged in the first protective cover 150; a vertical through hole 170 is opened at the bottom of the first protective cover 150; the emitting end of the laser rangefinder is directly above the vertical through hole 170; the second protective cover 160 is arranged at one end of the second support arm 140 away from the lifting seat 120; the controller and the communication module are both arranged in the second protective cover 160. By setting the first protective cover 150 and the second protective cover 160, the role of protecting each electronic component is achieved.

[0040] Meanwhile, this portable soil erosion measurement tool further includes a monitoring terminal communicatively connected to a cloud server; the cloud server is further configured to: send the distance between the laser rangefinder and the ground, as well as the soil erosion amount of the area to be measured, to the monitoring terminal for display. By setting up the monitoring terminal, the management personnel can observe the ground soil erosion situation of the area to be measured in real time. In addition, this portable soil erosion measurement tool further includes a storage battery; the storage battery is used to supply power to the controller, the communication module, and the laser rangefinder; the storage battery is disposed within the second protective cover 160.

[0041] In addition, this portable soil erosion measurement tool further includes a biaxial inclination sensor array, a micro LiDAR, and an inclination sensor: Three groups of biaxial inclination sensor arrays (with an accuracy of ±0.01°) are respectively deployed at the bottom, middle, and top of the support column. The biaxial inclination sensor array is used to monitor the overall inclination angle of the device in real time.

[0042] The micro LiDAR is disposed at the top of the lifting seat, scans the terrain within a radius of 5 m around every 24 hours, and sends it to the controller to generate three-dimensional point cloud data of the surrounding area to be measured, calculate the local slope (θ) of the area to be measured, and the surface roughness.

[0043] Meanwhile, the controller automatically adjusts the angle of the laser rangefinder through the inclination sensor data, so as to ensure that the emission direction is always perpendicular to the actual ground (not the axis of the device), thereby eliminating the projection error caused by the slope.

[0044] The above formula for calculating the soil erosion amount based on the distance between the laser rangefinder and the ground within the past second preset duration is as follows:

[0045]

[0046] In the formula, Q is the soil erosion amount of the area to be measured; h t is the distance between the laser rangefinder and the ground obtained at the current moment; ΔT is the second preset duration, for example, 1 day, and T ref is the reference duration, for example, 1 year; h t-ΔT is the distance between the laser rangefinder and the ground obtained in the previous second preset duration; ρ is the bulk density of the soil in the area to be measured; S is the area of the area to be measured.

[0047] Specifically, this embodiment gives the specific formula for calculating the soil erosion amount.

[0048] Specifically, three groups of telescopic hydraulic legs are provided at the bottom of the support column. The hydraulic legs can automatically adjust their lengths according to the slope data collected by the micro LiDAR, so that the device remains vertical on the slope.

[0049] In addition, the controller is further configured to perform the following analysis based on the soil erosion amount data:

[0050] 1. Erosion rate spectrum analysis

[0051] Adopt the short-time Fourier transform (STFT): Convert the time-domain distance data into a time-frequency matrix to identify the periodic characteristics of erosion events (such as the frequency peak corresponding to the rainfall cycle).

[0052] Adopt the Hilbert-Huang transform (HHT): Extract the intrinsic mode functions (IMFs) of the data to quantify the energy spectrum differences between natural vibrations (such as wet-dry cycles) and real erosion.

[0053] 2. Visualization of time cumulative effect

[0054] Calculus dynamic dashboard: The monitoring terminal displays two types of indicators:

[0055] Instantaneous erosion rate (v = dH / dt, mm / hour)

[0056] Cumulative erosion equivalent (Qacc = ∫₀ᵀv(t)dt, t / ha)

[0057] Prediction interval display: Based on the autoregressive integrated moving average (ARIMA) model of historical data, generate a 95% confidence interval for the erosion amount in the next 7 days, highlighting the early warning value of short-term monitoring.

[0058] 3. Inversion of erosion dynamics parameters

[0059] Calculation of soil erosion resistance coefficient: Combine the erosion rate and meteorological data (an external rain gauge is required) to invert the soil erodibility factor (K value) and provide real-time parameter calibration for the USLE model.

[0060] Critical slope warning: Through long-term data statistics, output the critical slope angle under a specific soil type (such as when > 25°, the erosion risk index increases steeply), so as to guide engineering protection.

[0061] Meanwhile, the first adjusting member includes a first rotating rod 180, a first connecting seat 190, and a second connecting seat 210; both the first connecting seat 190 and the second connecting seat 210 are connected to the outer wall of the support pipe column 110; the first connecting seat 190 is above the lifting seat 120; the second connecting seat 210 is below the lifting seat 120; both ends of the first rotating rod 180 are rotatably connected to the first connecting seat 190 and the second connecting seat 210 respectively; the first rotating rod 180 is parallel to the central axis of the support pipe column 110; the first rotating rod 180 is provided with an external thread; the lifting seat 120 is provided with a threaded hole penetrating therethrough, and the central axis of the threaded hole is parallel to the central axis of the support pipe column 110; the first rotating rod 180 is screwed into the threaded hole in a matching manner. The first adjusting member further includes a rotating handle 220; the rotating handle 220 is connected to the top of the first rotating rod 180; the cross-section of the lifting seat 120 is annular, and the lifting seat 120 and the support pipe column 110 share the same central axis. In another embodiment, a cross-shaped groove (not shown) is formed at the top of the first rotating rod 180. During operation, an electric screwdriver can be inserted into the cross-shaped groove to drive the first rotating rod 180 to rotate.

[0062] Through the above technical solution, the specific structure and function of the first adjusting member are improved; the operator manually rotates the rotating handle 220, thereby driving the first rotating rod 180 to rotate, and then driving the lifting seat 120 to vertically lift or lower relative to the support pipe column 110.

[0063] In addition, the portable soil erosion measurement tool further includes a support plate 240, a reinforcing rod 250, and a second adjusting member; the inside of the support pipe column 110 is hollow and the bottom is open; the reinforcing rod 250 is movably embedded in the inside of the support pipe column 110; the support plate 240 is sleeved on the support pipe column 110 and is close to the bottom of the support pipe column 110; the support plate 240 is perpendicular to the central axis of the support pipe column 110; the reinforcing rod 250 and the support pipe column 110 share the same central axis; the second adjusting member is used to drive the reinforcing rod 250 to move relative to the support pipe column 110, so that the reinforcing rod 250 extends out of or retracts into the support pipe column 110.

[0064] Through the above technical solution, after the support pipe column 110 is embedded in the pile hole, the support plate 240 is kept in contact with the ground, so as to better support the entire support pipe column 110. Then, the second adjusting member is used to drive the reinforcing rod 250 to extend downward out of the support pipe column 110 to be embedded in the ground downward, thereby greatly improving the stability of the support pipe column 110.

[0065] The tip of the reinforcing rod is integrated with a pressure sensor, and the pressure sensor is communicatively connected to the controller. The pressure sensor can real-time feedback the soil hardness, so as to dynamically adjust the penetration depth of the reinforcing rod (such as retracting in hard soil and inserting deeply in soft soil), and improve the stability in complex terrains.

[0066] Specifically, the second adjustment component includes a second rotating rod 320, a nut sleeve 330, a third connecting seat 290, a fourth connecting seat 310, a first connecting rod 340 and a second connecting rod 350; the third connecting seat 290 and the fourth connecting seat 310 are arranged inside the support column 110; the two ends of the second rotating rod 320 are respectively connected to the third connecting seat 290 and the fourth connecting seat 310; the second rotating rod 320 and the support column 110 share a central axis; the second rotating rod 320 is provided with an external thread; the nut sleeve 330 is cooperatively sleeved on the second rotating rod 320; the nut sleeve 330 is between the third connecting seat 290 and the fourth connecting seat 310 ; The fourth connecting seat 310 is closer to the bottom of the supporting column 110 than the third connecting seat 290; the first connecting rod 340 and the second connecting rod 350 are both slidably penetrated through the fourth connecting seat 310; one end of the first connecting rod 340 and the second connecting rod 350 are both connected to the nut sleeve 330; the first connecting rod 340 and the second connecting rod 350 are both parallel to the central axis of the supporting column 110, and are symmetrical with the central axis of the supporting column 110; the other ends of the first connecting rod 340 and the second connecting rod 350 are both connected to the reinforcing rod 250; the reinforcing rod 250 is located on the side of the fourth connecting seat 310 that is away from the third connecting seat 290.

[0067] At the same time, the second adjusting component also includes a motor 360; the battery is used to power the motor 360; the motor 360 is arranged in the support column 110; the motor 360 is used to drive the second rotating rod 320 to rotate; the end of the reinforcement rod 250 away from the fourth connecting seat 310 is provided with a pointed head 260; the outer wall of the reinforcement rod 250 is connected to a plurality of barbs 270; the first connecting rod 340 and the second connecting rod 350 are symmetrical with the second rotating rod 320.

[0068] Through the above technical solution, the structure and function of the second adjusting component are further improved; the second rotating rod 320 is driven to rotate by the motor 360 to drive the nut sleeve 330 to rise and fall vertically, thereby driving the reinforcement rod 250 to move axially relative to the support column 110 through the first connecting rod 340 and the second connecting rod 350 to extend or retract the support column 110.

[0069] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A portable soil erosion measurement tool, characterized in that: The invention comprises a support column, a lifting seat, a first adjusting component, a laser rangefinder, a controller, a communication module, a cloud server and a monitoring terminal; the support column is used to be vertically embedded in the ground of the area to be measured; the lifting seat is vertically slidably sleeved on the support column; the laser rangefinder is connected to the lifting seat; the laser emission direction of the laser rangefinder is parallel to the central axis of the support column; a bubble level is arranged on the top of the support column; the first adjusting component is used to drive the lifting seat to slide relative to the support column and fix the position of the lifting seat; the communication module and the laser rangefinder are connected to the lifting seat ... rangefinder is connected to the lifting seat; the laser emission direction of the laser rangefinder is parallel to the central axis of the support column; the laser rangefinder is connected to the lifting seat; the laser rangefinder is connected to the lifting seat; the laser rangefinder is connected to the lifting seat; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the laser rangefinder is connected to the central axis of the support column; the The distance meters are electrically connected to the controller; the communication module is used to communicate with the cloud server; the monitoring terminal is communicatively connected to the cloud server; the laser rangefinder is used to measure the distance to the ground once every first preset time period and send it to the controller; the controller is used to send the distance between the laser rangefinder and the ground to the cloud server through the communication module; the cloud server is used to calculate the amount of soil erosion in the area to be measured based on the distance between the laser rangefinder and the ground within the past second preset time period, wherein the second preset time period is greater than the first preset time period.

2. A portable soil erosion measurement tool according to claim 1, characterized in that: It also includes a first supporting arm, a second supporting arm, a first protective cover and a second protective cover; the first supporting arm and the second supporting arm are respectively connected to the two sides of the lifting seat; the first protective cover is arranged at the end of the first supporting arm away from the lifting seat; the laser rangefinder is arranged in the first protective cover; a vertical through hole is opened at the bottom of the first protective cover; the transmitting end of the laser rangefinder is located directly above the vertical through hole; the second protective cover is arranged at the end of the second supporting arm away from the lifting seat; the controller and the communication module are both arranged in the second protective cover.

3. A portable soil erosion measurement tool according to claim 1, characterized in that: It also includes a monitoring terminal that is communicatively connected to the cloud server; the cloud server is also used to send the distance between the laser rangefinder and the ground, and the amount of soil erosion in the area to be measured to the monitoring terminal for display.

4. A portable soil erosion measurement tool according to claim 2, characterized in that: It also includes a battery; the battery is used to supply power to the controller, the communication module and the laser rangefinder; the battery is arranged in the second protective cover.

5. A portable soil erosion measurement tool according to claim 1, characterized in that: The calculation formula for calculating the amount of soil erosion based on the distance between the laser rangefinder and the ground within the past second preset time period is: Where Q is the amount of soil erosion in the measured area; h t is the distance between the laser rangefinder and the ground obtained at the current moment; ΔT is the second preset time length, T ref is the reference duration; h t-ΔT is the distance between the laser rangefinder and the ground obtained before the second preset time; ρ is the bulk density of the soil in the area to be measured; S is the area of ​​the area to be measured.

6. A portable soil erosion measurement tool according to claim 1, characterized in that: The first adjusting component includes a first rotating rod, a first connecting seat and a second connecting seat; the first connecting seat and the second connecting seat are both connected to the outer wall of the supporting pipe column; the first connecting seat is located above the lifting seat; the second connecting seat is located below the lifting seat; the two ends of the first rotating rod are rotatably connected to the first connecting seat and the second connecting seat respectively; the first rotating rod is parallel to the central axis of the supporting pipe column; the first rotating rod is provided with an external thread; the lifting seat is provided with a threaded hole; the first rotating rod is screwed into the threaded hole.

7. A portable soil erosion measurement tool according to claim 6, characterized in that: The first adjusting component also includes a rotating handle; the rotating handle is connected to the top of the first rotating rod.

8. A portable soil erosion measurement tool according to claim 4, characterized in that: It also includes a support plate, a reinforcement rod and a second adjustment component; the interior of the support tube column is hollow and the bottom is open; the reinforcement rod is movably embedded in the interior of the support tube column; the support plate is sleeved on the support tube column and is close to the bottom of the support tube column; the support plate is perpendicular to the central axis of the support tube column; the reinforcement rod and the support tube column share a common central axis; the second adjustment component is used to drive the reinforcement rod to move relative to the support tube column so that the reinforcement rod can extend or retract into the support tube column.

9. A portable soil erosion measurement tool according to claim 8, characterized in that: The second adjusting component includes a second rotating rod, a nut sleeve, a third connecting seat, a fourth connecting seat, a first connecting rod and a second connecting rod; the third connecting seat and the fourth connecting seat are arranged inside the supporting tube column; the two ends of the second rotating rod are respectively connected to the third connecting seat and the fourth connecting seat; the second rotating rod and the supporting tube column have a common central axis; the second rotating rod is provided with an external thread; the nut sleeve is cooperatively sleeved on the second rotating rod; the nut sleeve is between the third connecting seat and the fourth connecting seat; the fourth connecting seat is closer to the bottom of the supporting tube column than the third connecting seat; the first connecting rod and the second connecting rod are both slidably passed through the fourth connecting seat; one end of the first connecting rod and the second connecting rod are both connected to the nut sleeve; the first connecting rod and the second connecting rod are both parallel to the central axis of the supporting tube column and symmetrical with the central axis of the supporting tube column; the other ends of the first connecting rod and the second connecting rod are both connected to the reinforcement rod; the reinforcement rod is on the side of the fourth connecting seat away from the third connecting seat.

10. A portable soil erosion measurement tool according to claim 9, characterized in that: The second adjusting component also includes a motor; the battery is used to power the motor; the motor is arranged in the supporting tube column; the motor is used to drive the second rotating rod to rotate; the end of the reinforcement rod away from the fourth connecting seat is provided with a pointed head; the outer wall of the reinforcement rod is connected to a plurality of barbs; the first connecting rod and the second connecting rod are symmetrical with the second rotating rod.

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