Soil moisture measurement management system suitable for permafrost active layer

Abstract

The invention relates to the field of soil moisture measurement, in particular to a soil moisture measurement management system suitable for a permafrost active layer, which is used for solving the problem that a system capable of effectively and comprehensively managing measurement data and simultaneously carrying out basic auxiliary analysis on statistical data is lacked when the soil moisture content of the active layer is measured. According to the invention, basic influence factors are respectively measured through different units, multi-party measurement information intercommunication is realized through a cloud information interaction mode, the measurement efficiency is ensured, a three-dimensional measurement stereogram is drawn through the depth construction control unit, and one-sided data are combined into a visual three-dimensional image through the three-dimensional image, so that the measurement efficiency is improved. According to the soil moisture content monitoring system, the change of the soil moisture content on different terrains, different temperatures and different depth levels can be conveniently and intuitively known, unreasonable data are intelligently screened through the moisture measurement and analysis unit, the unreasonable data are marked and reminded, and the accuracy of the data in a measurement completion graph is improved.

Description

Technical Field

[0001] The invention relates to the field of soil moisture measurement, and in particular to a soil moisture measurement and management system suitable for permafrost active layers. Background Art

[0002] Permafrost has unique hydrothermal characteristics, which strongly affect the energy-water exchange process between the ground and the atmosphere and the surface and underground hydrological processes. It has unique hydrothermal characteristics. The cold energy stored in the permafrost layer affects the surface temperature through the water-heat exchange in the active layer, and then affects the regional climate. The water in the permafrost layer is mainly stored in the form of solid ice, and the external liquid water also quickly freezes into ice due to its low-temperature freezing effect. Therefore, the permafrost layer has a very strong water-isolating effect. Various hydrological processes in its distribution area are strictly restricted to the surface, active layer, thawing zone and the strata below the lower limit of permafrost. In the permafrost area, the active layer refers to the rock and soil layer above the permafrost layer that freezes in the cold season and melts in the warm season, also known as the seasonal thawing layer.

[0003] The active layer does not belong to permafrost, but its spatial distribution is one of the main factors affecting the development or degradation of permafrost. Since permafrost is covered under the active layer, the spatial distribution of permafrost cannot be directly observed and is difficult to simulate accurately. At present, the spatial distribution of moisture in the active layer is still in the qualitative description stage. Therefore, in the process of measuring the active layer, a measurement management system that can coordinate management and assist analysis is needed to better assist scientific researchers in their measurements.

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] The present invention realizes the separate measurement of basic influencing factors through the measurement information acquisition unit and the soil analysis unit, so that the measurement of different factors has an independent processing unit, and realizes the mutual communication of multi-party measurement information through cloud information interaction, so as to ensure the efficiency of measurement, draws a three-dimensional measurement stereogram through the depth construction control unit, and combines the one-sided data into an intuitive three-dimensional three-dimensional image through the three-dimensional image, and supplements with data display, so as to intuitively understand the change of soil moisture content in different terrains, different temperatures and different depth levels, and performs preliminary data analysis on the three-dimensional measurement completion map through the moisture measurement and analysis unit, so as to intelligently screen unreasonable data, and mark and remind unreasonable data, thereby improving the accuracy of data in the measurement completion map, so as to solve the technical defects proposed by the background technology.

[0006] The object of the present invention can be achieved by the following technical scheme: a soil moisture measurement and management system suitable for permafrost active layer, comprising a measurement information acquisition unit, a moisture measurement and analysis unit, a depth construction control unit, a comprehensive management unit and a soil analysis unit, wherein the measurement information acquisition unit comprises an active layer acquisition unit and a surface layer acquisition unit, wherein the active layer acquisition unit can acquire active layer soil moisture content and active layer soil temperature, and the surface layer acquisition unit can acquire surface layer soil moisture content, and the measurement information acquisition unit sends the acquired active layer soil temperature, active layer soil moisture content and surface layer soil moisture content to the moisture measurement and analysis unit;

[0007] The depth construction control unit obtains the measurement depth when the active layer is measured, generates a measurement stereogram according to the measurement depth, and sends the measurement stereogram to the moisture measurement and analysis unit;

[0008] The soil analysis unit can obtain influencing factors of the active layer, wherein the influencing factors of the active layer include soil type, terrain information and vegetation coverage information;

[0009] The moisture measurement and analysis unit obtains the active layer soil temperature, the active layer soil moisture content and the surface layer soil moisture content, and performs data verification analysis according to the active layer soil temperature, the active layer soil moisture content and the surface layer soil moisture content, and sends the data verification analysis result to the comprehensive management unit. At the same time, the moisture measurement and analysis unit transfers the information sent by the measurement information acquisition unit, the depth construction control unit and the soil analysis unit to the comprehensive management unit;

[0010] The comprehensive management unit performs verification analysis on the data sent by the moisture measurement and analysis unit and classifies and stores various measurement data, wherein the measurement data include the above-mentioned active layer soil temperature, active layer soil moisture content, surface soil moisture content, measurement stereogram and influencing factors of the active layer.

[0011] As a preferred embodiment of the present invention, when collecting the surface soil moisture content, the surface layer collection unit performs detection by satellite remote sensing to obtain surface soil moisture content data of a large area;

[0012] The active layer collection unit collects the active layer soil moisture content by drilling. After the active layer soil moisture content and the active layer soil temperature are collected by drilling, the drilling depth corresponding to the active layer soil moisture content and the active layer soil temperature is marked according to the drilling depth, so as to improve the data integrity of the active layer soil moisture content and the active layer soil temperature.

[0013] As a preferred embodiment of the present invention, the depth construction control unit obtains the measured depth of the active layer, and marks the measured depth of the active layer and the position coordinates of the measuring point one-to-one, and the depth construction control unit constructs a three-dimensional coordinate graph, wherein the XY axes of the three-dimensional coordinate graph are the coordinate plane, and the Z axis is the downward space, and the depth construction control unit converts the position of the measuring point into XY coordinates, and converts the measured depth into Z-axis coordinates, and then fills the measuring point into the three-dimensional coordinate graph to complete the construction of the measurement stereogram.

[0014] As a preferred embodiment of the present invention, after obtaining the measurement stereogram, the moisture measurement and analysis unit fills the active layer soil moisture content and the active layer soil temperature into the measurement stereogram according to their corresponding drilling depths. The filling position is determined based on the drilling depth being equal to the measurement depth, and a measurement completion diagram is generated.

[0015] As a preferred embodiment of the present invention, the soil type analysis unit divides soil types into sandy soil, clay soil, and loam, divides terrain information into three types: depressions, highlands, and slopes, and displays vegetation coverage information in the form of prepared coverage. When obtaining soil types, the soil type analysis unit obtains them by manual input. When obtaining terrain information, the soil type analysis unit distributes multiple control points in a rectangular array in the analysis area, and scans the selected area through satellite remote sensing to obtain the altitude of each control point. If the altitude of a certain control point is less than that of all its adjacent control points, the area where the control point is located is marked as a depression. If the altitude of a certain control point is greater than that of all its adjacent control points, the area where the control point is located is marked as a highland. If the altitude of a certain control point is higher than that of at least one group of its adjacent control points, and the altitude of the control point is less than that of at least one group of its adjacent control points, the area where the control point is located is marked as a slope.

[0016] When acquiring vegetation coverage information, the soil type analysis unit acquires a vegetation coverage image through aerial photography, marks the vegetation coverage part in the vegetation coverage image, and calculates the vegetation coverage rate by calculating the proportion of the vegetation coverage part to the total area.

[0017] As a preferred embodiment of the present invention, the process of the moisture measurement and analysis unit performing data verification analysis is as follows:

[0018] S1: Obtain the measurement completion diagram and obtain the data of any measurement point in the measurement completion diagram, wherein the data includes the soil moisture content and the soil temperature of the active layer;

[0019] S2: Acquire the data of all the measurement points adjacent to the measurement point selected in step S1, and perform difference calculation between the measurement point in S1 and the data of the same type of the adjacent measurement points to obtain the data migration value;

[0020] S3: Compare the data migration value with a preset migration threshold. If the data migration value is greater than the preset migration threshold, a data anomaly signal is generated, and two groups of measurement points generating the data anomaly signal are highlighted. If the data migration value is less than or equal to the preset migration threshold, no response is made.

[0021] S4: repeat the steps from S1 to S3 to complete the comparison of data migration values ​​for all measurement points in the measurement completion graph;

[0022] S5: The number of generated data abnormality signals and the measurement completion graph with highlighted completion are sent to the comprehensive management unit as data verification analysis results.

[0023] As a preferred embodiment of the present invention, the comprehensive management unit includes a data management unit and an equipment management unit. The data management unit is used to perform verification analysis on the data sent by the moisture measurement and analysis unit and store various measurement data. The equipment management unit can obtain the equipment usage time and equipment maintenance interval, and calculate the equipment reliability index according to the equipment usage time and equipment maintenance interval, and remind the equipment for maintenance and repair according to the equipment reliability index. The equipment reliability index is calculated by sending the equipment usage time and equipment maintenance interval to the cloud, and the cloud simulates the equipment usage time and equipment maintenance interval in different weights through an analysis model, and generates the equipment reliability index according to the simulation results;

[0024] When comparing the data migration value with the preset migration threshold, the moisture measurement and analysis unit performs a proportional weighted calculation on the preset migration threshold according to the equipment reliability index, and changes the preset migration threshold in real time.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. When measuring the soil moisture content of the active layer, the present invention realizes the separate measurement of basic influencing factors through the measurement information acquisition unit and the soil analysis unit, so that the measurement of different factors has an independent processing unit, and realizes the intercommunication of multi-party measurement information through cloud information interaction, thereby ensuring the efficiency of measurement.

[0027] 2. The present invention draws a three-dimensional measurement stereogram through a depth construction control unit, and realizes information exchange in combination with a measurement information acquisition unit and a soil analysis unit, thereby realizing the construction of a measurement completion map. Through a three-dimensional image, one-sided data is combined into an intuitive three-dimensional three-dimensional image, and supplemented with data display, so that users can intuitively understand the changes in soil moisture content at different terrains, different temperatures and different depth levels.

[0028] 3. The present invention uses a moisture measurement and analysis unit to perform preliminary data analysis on the three-dimensional measurement completion diagram, thereby intelligently screening out unreasonable data and marking and reminding unreasonable data, thereby reducing the workload of users and improving the accuracy of data in the measurement completion diagram, thereby ensuring the rigor of research results. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0030] Figure 1 is a system flow chart of the present invention;

[0031] Figure 2 It is a schematic diagram of a measurement information acquisition unit of the present invention;

[0032] Figure 3 It is a schematic diagram of the comprehensive management unit of the present invention. DETAILED DESCRIPTION

[0033] The technical scheme of the present invention will be described clearly and completely in conjunction with the embodiments below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1:

[0035] See also Figure 1 - Figure 3 As shown, a soil moisture measurement and management system suitable for the active layer of permafrost includes a measurement information collection unit, a moisture measurement and analysis unit, a depth construction control unit, a comprehensive management unit and a soil analysis unit, wherein the various units above all communicate with each other through cloud communication to ensure the collaborative operation of multiple units, the measurement information collection unit includes an active layer collection unit and a surface layer collection unit, wherein the active layer collection unit can collect the soil moisture content and the soil temperature of the active layer, and the active layer collection unit collects the soil moisture content of the active layer by drilling, and the surface layer collection unit collects the soil moisture content of the active layer by drilling. After collecting the active layer soil moisture content and active layer soil temperature, the drilling depth corresponding to the active layer soil moisture content and active layer soil temperature is marked according to the drilling depth, and the data integrity of the active layer soil moisture content and active layer soil temperature is improved; the surface layer acquisition unit can collect the surface layer soil moisture content. When collecting the surface layer soil moisture content, the surface layer acquisition unit detects it by satellite remote sensing to obtain a large area of ​​surface layer soil moisture data. The measurement information acquisition unit sends the collected active layer soil temperature, active layer soil moisture content and surface layer soil moisture content to the moisture measurement and analysis unit;

[0036] The depth construction control unit obtains the measurement depth when the active layer is measured, and generates a measurement stereogram according to the measurement depth, and sends the measurement stereogram to the moisture measurement and analysis unit. When constructing the measurement stereogram, the depth construction control unit obtains the measurement depth of the active layer, and marks the measurement depth of the active layer and the position coordinates of the measurement point one-to-one. The depth construction control unit constructs a three-dimensional coordinate graph, wherein the XY axis of the three-dimensional coordinate graph is a coordinate plane, and the Z axis is a downward space. The depth construction control unit converts the position of the measurement point into XY coordinates, and converts the measurement depth into Z-axis coordinates, and then fills the measurement point into the three-dimensional coordinate graph to complete the construction of the measurement stereogram;

[0037] The soil analysis unit can obtain the influencing factors of the active layer, wherein the influencing factors of the active layer include soil type, terrain information and vegetation coverage information. The soil type analysis unit divides the soil type into sandy soil, clay soil and loam, divides the terrain information into three types: depression, highland and slope, and displays the vegetation coverage information in the form of prepared coverage rate. When the soil type analysis unit obtains the soil type, it obtains it by manual input. When the soil type analysis unit obtains the terrain information, a plurality of control points are distributed in a rectangular array in the analysis area, and the selected area is scanned by satellite remote sensing to obtain the altitude of each control point. If the altitude of a certain control point is less than that of all its adjacent control points, the area where the control point is located is marked as a depression. If the altitude of a certain control point is greater than that of all its adjacent control points, the area where the control point is located is marked as a highland. If the altitude of a certain control point is higher than that of at least one group of its adjacent control points, and the altitude of the control point is less than that of at least one group of its adjacent control points, the area where the control point is located is marked as a slope.

[0038] When obtaining vegetation coverage information, the soil type analysis unit obtains vegetation coverage images through aerial photography, marks the vegetation coverage parts in the vegetation coverage images, and calculates the vegetation coverage rate by calculating the proportion of the vegetation coverage parts to the total area.

[0039] Embodiment 2:

[0040] See also Figure 1 - Figure 3As shown, the moisture measurement and analysis unit obtains the active layer soil temperature, the active layer soil moisture content and the surface layer soil moisture content, fills the active layer soil moisture content and the active layer soil temperature into the measurement stereogram according to their corresponding drilling depths, and the filling position is determined based on the drilling depth being equal to the measurement depth, generates a measurement completion map, and performs data verification analysis based on the active layer soil temperature, the active layer soil moisture content and the surface layer soil moisture content, and sends the data verification analysis results to the comprehensive management unit, and at the same time, the moisture measurement and analysis unit transfers the information sent by the measurement information acquisition unit, the depth construction control unit and the soil analysis unit to the comprehensive management unit;

[0041] The process of data verification analysis by the moisture measurement and analysis unit is as follows:

[0042] S1: Obtain the measurement completion diagram and obtain the data of any measurement point in the measurement completion diagram, wherein the data includes the soil moisture content and the soil temperature of the active layer;

[0043] S2: Acquire the data of all the measurement points adjacent to the measurement point selected in step S1, and perform difference calculation between the measurement point in S1 and the data of the same type of the adjacent measurement points to obtain the data migration value;

[0044] S3: Compare the data migration value with a preset migration threshold. If the data migration value is greater than the preset migration threshold, a data anomaly signal is generated, and two groups of measurement points generating the data anomaly signal are highlighted. If the data migration value is less than or equal to the preset migration threshold, no response is made.

[0045] S4: repeat the steps from S1 to S3 to complete the comparison of data migration values ​​for all measurement points in the measurement completion graph;

[0046] S5: The number of generated data abnormality signals and the measurement completion graph with highlighted completion are sent to the comprehensive management unit as data verification analysis results.

[0047] The comprehensive management unit includes a data management unit and an equipment management unit. The data management unit is used for performing validation analysis on the data sent by the moisture measurement and analysis unit and for classifying and storing a variety of measurement data, wherein the measurement data include the above-mentioned active layer soil temperature, active layer soil moisture content, surface soil moisture content, measurement stereogram, and influencing factors of the active layer. The equipment management unit can obtain the equipment usage time and equipment maintenance interval, and calculate the equipment reliability index based on the equipment usage time and equipment maintenance interval, and remind the equipment for maintenance and repair based on the equipment reliability index. The equipment reliability index is calculated as follows: the equipment usage time and equipment maintenance interval are sent to the cloud, and the cloud simulates the equipment usage time and equipment maintenance interval in different weights through an analysis model, and generates an equipment reliability index based on the simulation results;

[0048] When comparing the data migration value with the preset migration threshold, the moisture measurement and analysis unit performs a proportional weighted calculation on the preset migration threshold according to the equipment reliability index, and changes the preset migration threshold in real time.

[0049] In the present invention, the basic influencing factors are measured separately by the measurement information acquisition unit and the soil analysis unit, so that the measurement of different factors has an independent processing unit, and the multi-party measurement information is exchanged by means of cloud information interaction, so as to ensure the efficiency of the measurement, and the three-dimensional measurement stereogram is drawn by the depth construction control unit, and the one-sided data is combined into an intuitive three-dimensional three-dimensional image through the three-dimensional image, and supplemented by data display, so that the user can intuitively understand the changes in soil moisture content at different terrains, different temperatures and different depth levels, and the three-dimensional measurement completion map is preliminarily analyzed by the moisture measurement and analysis unit, so as to intelligently filter out unreasonable data, and mark and remind unreasonable data, thereby reducing the workload of users, and at the same time improving the accuracy of the data in the measurement completion map, and ensuring the rigor of the research results.

[0050] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A soil moisture measurement and management system suitable for permafrost active layer, characterized in that: It includes a measurement information acquisition unit, a moisture measurement and analysis unit, a depth construction control unit, a comprehensive management unit and a soil analysis unit. The measurement information acquisition unit includes an active layer acquisition unit and a surface layer acquisition unit. The active layer acquisition unit can collect active layer soil moisture content and active layer soil temperature, and the surface layer acquisition unit can collect surface layer soil moisture content. The measurement information acquisition unit sends the collected active layer soil temperature, active layer soil moisture content and surface layer soil moisture content to the moisture measurement and analysis unit. The depth construction control unit obtains the measurement depth when the active layer is measured, generates a measurement stereogram according to the measurement depth, and sends the measurement stereogram to the moisture measurement and analysis unit; The soil analysis unit can obtain influencing factors of the active layer, wherein the influencing factors of the active layer include soil type, terrain information and vegetation coverage information; The moisture measurement and analysis unit obtains the active layer soil temperature, the active layer soil moisture content and the surface layer soil moisture content, and performs data verification analysis according to the active layer soil temperature, the active layer soil moisture content and the surface layer soil moisture content, and sends the data verification analysis result to the comprehensive management unit. At the same time, the moisture measurement and analysis unit transfers the information sent by the measurement information acquisition unit, the depth construction control unit and the soil analysis unit to the comprehensive management unit; The comprehensive management unit performs verification analysis on the data sent by the moisture measurement and analysis unit and classifies and stores various measurement data, wherein the measurement data include the above-mentioned active layer soil temperature, active layer soil moisture content, surface soil moisture content, measurement stereogram and influencing factors of the active layer.

2. A soil moisture measurement and management system suitable for permafrost active layer according to claim 1, characterized in that: When collecting the surface soil moisture content, the surface layer collection unit detects it by satellite remote sensing to obtain surface soil moisture content data of a large area; The active layer collection unit collects the active layer soil moisture content by drilling. After the active layer soil moisture content and the active layer soil temperature are collected by drilling, the drilling depth corresponding to the active layer soil moisture content and the active layer soil temperature is marked according to the drilling depth, so as to improve the data integrity of the active layer soil moisture content and the active layer soil temperature.

3. The soil moisture measurement and management system applicable to the permafrost active layer according to claim 1 is characterized in that: The depth construction control unit obtains the measured depth of the active layer, and marks the measured depth of the active layer and the position coordinates of the measuring point one-to-one. The depth construction control unit constructs a three-dimensional coordinate graph, wherein the XY axes of the three-dimensional coordinate graph are the coordinate plane, and the Z axis is the downward space. The depth construction control unit converts the position of the measuring point into XY coordinates, and converts the measured depth into Z-axis coordinates, and then fills the measuring point into the three-dimensional coordinate graph to complete the construction of the measurement stereogram.

4. A soil moisture measurement and management system suitable for permafrost active layer according to claim 3, characterized in that: After obtaining the measurement stereogram, the moisture measurement and analysis unit fills the active layer soil moisture content and the active layer soil temperature into the measurement stereogram according to their corresponding drilling depths, and the filling position is determined based on the drilling depth being equal to the measurement depth to generate a measurement completion map.

5. A soil moisture measurement and management system suitable for permafrost active layer according to claim 4, characterized in that: The soil type analysis unit divides soil types into sandy soil, clay soil, and loam, divides terrain information into three types: depressions, highlands, and slopes, and displays vegetation coverage information in the form of prepared coverage. When obtaining soil types, the soil type analysis unit obtains them by manual input. When obtaining terrain information, the soil type analysis unit distributes multiple control points in a rectangular array in the analysis area, and scans the selected area through satellite remote sensing to obtain the altitude of each control point. If the altitude of a certain control point is less than that of all its adjacent control points, the area where the control point is located is marked as a depression. If the altitude of a certain control point is greater than that of all its adjacent control points, the area where the control point is located is marked as a highland. If the altitude of a certain control point is higher than that of at least one group of its adjacent control points, and the altitude of the control point is less than that of at least one group of its adjacent control points, the area where the control point is located is marked as a slope. When acquiring vegetation coverage information, the soil type analysis unit acquires a vegetation coverage image through aerial photography, marks the vegetation coverage part in the vegetation coverage image, and calculates the vegetation coverage rate by calculating the proportion of the vegetation coverage part to the total area.

6. A soil moisture measurement and management system suitable for permafrost active layer according to claim 5, characterized in that: The process of data verification analysis performed by the moisture measurement and analysis unit is as follows: S1: Obtain the measurement completion diagram and obtain the data of any measurement point in the measurement completion diagram, wherein the data includes the soil moisture content and the soil temperature of the active layer; S2: Acquire the data of all the measurement points adjacent to the measurement point selected in step S1, and perform difference calculation between the measurement point in S1 and the data of the same type of the adjacent measurement points to obtain the data migration value; S3: Compare the data migration value with a preset migration threshold. If the data migration value is greater than the preset migration threshold, a data anomaly signal is generated, and two groups of measurement points generating the data anomaly signal are highlighted. If the data migration value is less than or equal to the preset migration threshold, no response is made. S4: repeat the steps from S1 to S3 to complete the comparison of data migration values ​​for all measurement points in the measurement completion graph; S5: The number of generated data abnormality signals and the measurement completion graph with highlighted completion are sent to the comprehensive management unit as data verification analysis results.

7. A soil moisture measurement and management system suitable for permafrost active layer according to claim 6, characterized in that: The comprehensive management unit includes a data management unit and an equipment management unit. The data management unit is used to perform verification analysis on the data sent by the moisture measurement and analysis unit and store various measurement data. The equipment management unit can obtain the equipment usage time and equipment maintenance interval, and calculate the equipment reliability index according to the equipment usage time and equipment maintenance interval, and remind the equipment for maintenance and repair according to the equipment reliability index. The equipment reliability index is calculated by sending the equipment usage time and equipment maintenance interval to the cloud, and the cloud simulates the equipment usage time and equipment maintenance interval in different weights through an analysis model, and generates the equipment reliability index according to the simulation results; When comparing the data migration value with the preset migration threshold, the moisture measurement and analysis unit performs a proportional weighted calculation on the preset migration threshold according to the equipment reliability index, and changes the preset migration threshold in real time.

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