A portable soil erosion measurement tool

Abstract

The present invention relates to the technical field of measuring tools, and in particular to a portable soil erosion measuring tool. First, a supporting pipe column is fixed to the ground. Then, a laser rangefinder is used to measure the distance to the ground once every first preset time period and transmit the measurement result to a controller. The controller transmits the distance to the ground to a cloud server via a communication module. The cloud server calculates the amount of soil erosion in a measured area based on the distance to the ground within a second preset time period. When soil erosion occurs on the ground, the distance to the ground measured by the laser rangefinder increases over time. The distance to the ground measured by the laser rangefinder every first preset time period can be used to calculate the amount of soil erosion on the ground. The solution proposed by the present invention for measuring the amount of soil erosion is more efficient and accurate.

Description

Technical Field

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

[0002] Soil erosion is an environmental issue that urgently needs to be addressed, having a profound impact on agriculture, forestry, water conservancy, and other fields. To accurately assess the intensity of soil erosion and implement effective prevention and control measures, real-time monitoring and measurement of soil erosion is necessary. Currently, commonly used soil erosion measurement methods mainly include contact measurement and non-contact measurement methods. Contact measurement methods mainly include runoff plot observation, rod insertion monitoring, and soil filling methods; non-contact measurement methods mainly include remote sensing imagery, photogrammetry, and three-dimensional laser scanning. All of the above soil erosion measurement methods have certain defects and limitations, namely, they cannot obtain soil erosion data in the monitored area in a timely and efficient manner. Summary of the Invention

[0003] The main purpose of the present invention is to provide a portable soil erosion measurement tool, which aims to solve the problem that the current soil erosion technical solutions cannot obtain soil erosion data of the monitored 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 measurement tool comprises a support column, a lifting seat, a first adjustment 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 provided on the top of the support column; the first adjustment 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 The block 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 between the laser rangefinder and the ground once every first preset time period and send the information 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 a second preset time period in the past, wherein the second preset time period is greater than the first preset time period.

[0006] Preferably, 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.

[0007] Preferably, it also includes a monitoring terminal connected to the cloud server in communication; 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.

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

[0009] Preferably, 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:

[0010]

[0011] Where Q is the amount of soil erosion in the measured area; h t is the distance between the laser rangefinder and the ground 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 in the second preset time period; 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 supporting tube column; the first connecting seat is above the lifting seat; the second connecting seat is 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 tube 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.

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

[0014] Preferably, 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 the same 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 extends out of or retracts into the support tube column.

[0015] Preferably, 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 support 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 support 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 support 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 connected to the nut sleeve; the first connecting rod and the second connecting rod are both parallel to the central axis of the support tube column and symmetrical with the central axis of the support 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 facing away from the third connecting seat.

[0016] Preferably, 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.

[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 of the monitoring area more timely and efficiently. In specific use, a pile hole is first dug in the area to be measured, and a support pipe column is inserted 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. The lifting base is then adjusted to make the distance between the laser rangefinder and the ground reach an initial preset value (for example, 1 meter). The laser rangefinder then measures the distance to the ground every first preset time period and sends the data to a controller. The controller sends the distance to the ground to a cloud server via a communication module. The cloud server calculates the amount of soil erosion in the area to be measured based on the distance to the ground over the past second preset time period. When the ground soil erodes, the distance between the laser rangefinder and the ground increases over time. The distance between the laser rangefinder and the ground measured every first preset time period can be used to calculate the amount of ground soil erosion. The solution proposed by the present invention is more efficient and accurate in measuring the amount of soil erosion, does not require manual operation, and is more convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0020] Figure 1 This 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 This 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 reference numerals:

[0023] 110. Support 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. Turning handle; 230. Bubble level; 240. Support plate; 250. Reinforcement rod; 260. Pointed head; 270. Barb; 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 purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

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

[0027] In addition, the terms "first," "second," and so on, used in this disclosure are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this disclosure, "plurality" means at least two, such as two or three, unless otherwise specifically defined.

[0028] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[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 fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

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

[0031] As attached Figure 1 -Attached Figure 2As shown, in one embodiment of a portable soil erosion measuring tool proposed by the present invention, the portable soil erosion measuring tool includes a support column 110, a lifting base 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 column 110 is used to be vertically embedded in the ground of the area to be measured; the lifting base 120 is vertically slidably sleeved on the support column 110; the laser rangefinder is connected to the lifting base 120; the laser emission direction of the laser rangefinder is parallel to the central axis of the support column 110; a bubble level 23 is provided on the top of the support column 110 0; the first adjustment component is used to drive the lifting seat 120 to slide relative to the support column 110 and fix the position of the lifting seat 120; the communication module and the laser rangefinder are both 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 between the laser rangefinder and the ground once every first preset time period (for example, 1 hour) and send the information 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 (for example, 3 days), wherein 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 of the monitoring area more timely and efficiently. When it is used, a pile hole is first dug in the area to be measured, and the support pipe column 110 is inserted 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 the lifting base 120 is adjusted to make the distance between the laser rangefinder and the ground reach an initial preset value (for example, 1m), and then the laser rangefinder measures a distance every first preset time. The distance between the laser rangefinder and the ground is measured and sent to the controller; the controller sends the distance between the laser rangefinder and the ground to the cloud server through the communication module; the cloud server calculates the amount of soil erosion in the measured area based on the distance between the laser rangefinder and the ground within the past second preset time period; when the ground soil is eroded, the distance between the laser rangefinder and the ground will increase over time, and the distance between the laser rangefinder and the ground every first preset time period can be used to calculate the amount of ground soil erosion. The solution proposed in the present invention for measuring the amount of soil erosion is more efficient and accurate, does not require manual operation, and is more convenient and quick.

[0033] At the same time, 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. The fiber Bragg grating laser interferometer uses the principle of optical path difference interference to achieve a resolution of 0.01mm and can detect subtle losses in the soil surface (such as 0.1mm erosion caused by a single rainfall).

[0034] A constant temperature vacuum protective cover can also be installed on the outside of the fiber Bragg grating laser interferometer: the constant temperature vacuum protective cover is filled with nitrogen and realizes constant temperature control (temperature difference is controlled within ±0.1℃) to avoid optical path deformation caused by temperature fluctuations.

[0035] In addition, a piezoelectric feedback system is installed between the lifting base and the support column to offset measurement jitter caused by environmental vibrations (such as wind and animal activity). The fiber Bragg grating laser interferometer can also simultaneously collect 1kHz high-frequency raw data and 1Hz low-frequency filtered data, separating noise from true signal through wavelet transform.

[0036] At the same time, the acquisition cycle of the fiber Bragg grating laser interferometer is 1 hour (i.e., acquisition 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 use event triggering mode for data acquisition: when the distance change rate between the ground and the instrument is detected to be greater than 0.05mm / min (such as heavy rain), the fiber Bragg grating laser interferometer automatically switches to 10 continuous sampling times per second and continues until the rate returns to normal.

[0038] Fiber Bragg grating laser interferometer can also use the piecewise aggregation approximation (PAA) algorithm to compress high-frequency data into trend feature packets, reducing transmission bandwidth requirements.

[0039] In addition, the 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 either side of the lifting base 120. The first protective cover 150 is disposed at the end of the first support arm 130 away from the lifting base 120. A laser rangefinder is disposed in the first protective cover 150. A vertical through-hole 170 is defined at the bottom of the first protective cover 150. The transmitting end of the laser rangefinder is located directly above the vertical through-hole 170. The second protective cover 160 is disposed at the end of the second support arm 140 away from the lifting base 120. The controller and communication module are both disposed within the second protective cover 160. The provision of the first and second protective covers 150 and 160 protects the various electronic components.

[0040] The portable soil erosion measurement tool also includes a monitoring terminal connected to a cloud server. The cloud server is also used to transmit the distance between the laser rangefinder and the ground, as well as the amount of soil erosion in the measured area, to the monitoring terminal for display. This monitoring terminal allows managers to observe soil erosion conditions in the measured area in real time. Furthermore, the portable soil erosion measurement tool includes a battery, which powers the controller, communication module, and laser rangefinder. The battery is housed within the second protective cover 160.

[0041] In addition, this portable soil erosion measurement tool also includes a dual-axis tilt sensor array, a micro-lidar and a tilt sensor: three sets of dual-axis tilt sensor arrays (with an accuracy of ±0.01°) are deployed at the bottom, middle and top of the support column respectively. The dual-axis tilt sensor array is used to monitor the overall tilt angle of the equipment in real time.

[0042] A micro-LiDAR (Light Detection and Ranging) is installed on top of the lift platform. It scans the terrain within a 5m radius every 24 hours and sends it to the controller to generate three-dimensional point cloud data of the surrounding area to be measured. It calculates the local slope (θ) and surface roughness of the area to be measured.

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

[0044] The calculation formula for the amount of soil erosion based on the distance between the laser rangefinder and the ground during the second preset time period is:

[0045]

[0046] 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, for example 1 day, 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 second preset time period; 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 provides a specific calculation formula for calculating the amount of soil erosion.

[0048] Specifically, three sets of retractable hydraulic legs are installed at the bottom of the support column. The hydraulic legs can automatically adjust their length according to the slope data collected by the micro laser radar, so that the equipment can remain vertical on the slope.

[0049] In addition, the controller is used to perform the following analyses based on soil erosion data:

[0050] 1. Erosion rate spectrum analysis

[0051] Short-time Fourier transform (STFT) is used to convert 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] The Hilbert-Huang transform (HHT) is used to extract the intrinsic mode functions (IMFs) of the data and quantify the difference in energy spectra between natural vibrations (such as dry-wet 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 = dHdt, mm / hour)

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

[0057] The prediction interval shows that the autoregressive model (ARIMA) based on historical data generates 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 erodibility coefficient: Combining erosion rate with meteorological data (external rain gauge required), the soil erodibility factor (K value) is inverted to provide real-time parameter calibration for the USLE model.

[0060] Critical slope warning: Through long-term data statistics, the critical slope angle under specific soil types is output (for example, the erosion risk index increases sharply when it is greater than 25°), thereby guiding engineering protection.

[0061] At the same time, the first adjustment component includes a first rotating rod 180, a first connecting seat 190, and a second connecting seat 210. The first connecting seat 190 and the second connecting seat 210 are both connected to the outer wall of the support column 110. The first connecting seat 190 is located above the lifting seat 120, and the second connecting seat 210 is located below the lifting seat 120. The two 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 column 110. The first rotating rod 180 is provided with an external thread. The lifting seat 120 is provided with a threaded hole, the central axis of the threaded hole is parallel to the central axis of the support column 110, and the first rotating rod 180 is screwed into the threaded hole. The first adjustment component also includes a rotating handle 220. The rotating handle 220 is connected to the top of the first rotating rod 180. The lifting seat 120 has a circular cross-section, and the lifting seat 120 and the support column 110 share a common central axis. In another embodiment, a cross groove (not shown) is formed on the top of the first rotating rod 180 . During operation, an electric screwdriver can be inserted into the cross groove to drive the first rotating rod 180 to rotate.

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

[0063] In addition, this portable soil erosion measurement tool also includes a support plate 240, a reinforcement rod 250 and a second adjustment component; the interior of the support tube column 110 is hollow and the bottom is open; the reinforcement rod 250 is movably embedded in the interior of the support tube column 110; the support plate 240 is sleeved on the support tube column 110 and is close to the bottom of the support tube column 110; the support plate 240 is perpendicular to the central axis of the support tube column 110; the reinforcement rod 250 and the support tube column 110 share a common central axis; the second adjustment component is used to drive the reinforcement rod 250 to move relative to the support tube column 110 so that the reinforcement rod 250 extends out or retracts into the support tube 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, thereby better supporting the entire support pipe column 110, and then the reinforcement rod 250 is driven downward from the support pipe column 110 through the second adjustment component to embed downward into the ground, thereby greatly improving the stability of the support pipe column 110.

[0065] The tip of the reinforcement rod is integrated with a pressure sensor, which is connected to the controller for communication. The pressure sensor can provide real-time feedback on soil hardness, so as to dynamically adjust the depth of the reinforcement rod (such as retraction in hard soil and deep insertion in soft soil) to improve stability in complex terrain.

[0066] Specifically, the second adjusting 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 fitted on the second rotating rod 320; the nut sleeve 330 is located between the third connecting seat 290 and the fourth connecting seat 310 ; The fourth connecting seat 310 is closer to the bottom of the support 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 support column 110, and are symmetrical with the central axis of the support column 110; the other ends of the first connecting rod 340 and the second connecting rod 350 are both connected to the reinforcement rod 250; the reinforcement rod 250 is on the side of the fourth connecting seat 310 facing 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 transformations made by using the contents of the present invention description and drawings under the inventive concept of the present invention, or direct / indirect application 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 provided 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 both electrically connected to the controller; the communication module is used to communicate with the The cloud server communicates; the monitoring terminal is communicatively connected to the cloud server; the laser rangefinder is configured to measure the distance to the ground once every first preset time period and transmit the measurement to the controller; the controller is configured to transmit the distance between the laser rangefinder and the ground to the cloud server via the communication module; the cloud server is configured 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 a second preset time period, wherein the second preset time period is greater than the first preset time period; the cloud server is further configured to transmit 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; The calculation formula for the soil erosion amount calculated based on the distance between the laser rangefinder and the ground within the past second preset time period is: ， Where, is the amount of soil erosion in the measured area; The distance between the laser rangefinder and the ground obtained at the current moment; is the second preset duration, For reference duration; The distance between the laser rangefinder and the ground obtained for the second preset time period; is the bulk density of the soil in the area to be tested; is the area of ​​the region to be measured; θ is the local slope of the area to be measured; 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; 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 support 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.

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 2, characterized in that: It also includes a battery; the battery is used to power the controller, the communication module and the laser rangefinder; the battery is arranged in the second protective cover.

4. A portable soil erosion measurement tool according to claim 1, characterized in that: The first adjusting component further includes a rotating handle; the rotating handle is connected to the top of the first rotating rod.

5. The portable soil erosion measurement tool according to claim 3, 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 extends out or retracts into the support tube column.

6. A portable soil erosion measurement tool according to claim 5, 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 support 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 support 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 support 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 connected to the nut sleeve; the first connecting rod and the second connecting rod are both parallel to the central axis of the support tube column and symmetrical with the central axis of the support 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 facing away from the third connecting seat.

7. A portable soil erosion measurement tool according to claim 6, 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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