A vehicle-mounted multifunctional soil detection device

Abstract

The utility model discloses a vehicle -mounted multifunctional soil detection device. The detection device includes vehicle -mounted fixing frame, liftable slide support and the first drive mechanism of driving its lift. The liftable slide of being equipped with on slide support and the second drive mechanism of driving its lift. The integrated soil taking mechanism for drilling the soil and the in -situ sensor for detecting the physicochemical parameter of soil are on the slide. The device is independently provided with loose degree measurement component. When operating, the first drive mechanism adjusts the whole machine ground clearance, and the second drive mechanism drives the slide to drop, makes the soil taking mechanism and in -situ sensor synchronous insertion soil, completes sampling and physicochemical parameter detection, and the loose degree measurement component independently carries out soil loose degree measurement. The utility model discloses through modularization and multistage drive design, has realized the automation collaborative operation of soil taking, pH value, conductivity, loose degree and other multiple detection tasks, and the structure is reasonable, convenient operation, and the detection efficiency and data accuracy are high.

Description

Technical Field

[0001] This utility model relates to the field of soil testing equipment technology, specifically to a vehicle-mounted multifunctional soil testing device. Background Technology

[0002] Currently, soil testing in China, especially the on-site soil sampling and analysis process, relies on relatively primitive methods. Soil sampling typically involves manual labor using tools such as soil drills and shovels. This method is not only labor-intensive and inefficient, but also prone to errors due to the inherent arbitrariness of human operation. The depth, location, and method of sampling are difficult to standardize, leading to unrepresentative samples and consequently, significant errors in subsequent laboratory analyses or rapid on-site testing results. Furthermore, automated vehicle-mounted equipment that integrates on-site testing of multiple key indicators such as soil compaction (looseness), pH, and electrical conductivity (EC) is rare, making it difficult to meet the demands of modern precision agriculture for rapid, accurate, and high-density soil information acquisition.

[0003] Therefore, finding a vehicle-mounted device that integrates soil sampling, soil physicochemical parameter testing, and physical property testing functions, and enables automated and standardized operations, is of great practical significance and application value for reducing the labor intensity of operators, minimizing testing errors caused by non-standard operations, and improving the overall efficiency and data quality of soil testing. Utility Model Content

[0004] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a vehicle-mounted multifunctional soil testing device to solve the technical problems of low efficiency, high labor intensity and poor standardization of manual soil sampling and testing in the prior art.

[0005] To achieve the above-mentioned technical objectives, this application adopts the following technical solution: This application provides a vehicle-mounted multifunctional soil testing device, comprising: Vehicle mounting bracket; A sliding bracket is mounted on the vehicle-mounted mounting frame in a height-adjustable manner; A first drive mechanism is mounted on the vehicle-mounted mounting frame to drive the sliding bracket to rise and fall; The sampling and measurement component includes a slide table, a second drive mechanism, a soil sampling mechanism, an in-situ sensor, and a looseness measurement component. The slide platform is vertically mounted on the sliding support; the second drive mechanism is mounted on the sliding support and drives the slide platform to move up and down relative to the sliding support; the soil sampling mechanism, the in-situ sensor, and the looseness measurement component are all mounted on the slide platform and are used to drill soil and detect the physical and chemical parameters and looseness of the soil, respectively.

[0006] In some embodiments of this application, the first drive mechanism includes a first electric cylinder and a second electric cylinder, the first electric cylinder and the second electric cylinder are fixed on the vehicle mounting bracket, and the piston rods of the first electric cylinder and the second electric cylinder are connected to the sliding bracket.

[0007] In some embodiments of this application, the sampling and measurement assembly further includes a guide rod, which is fixedly connected to the sliding bracket, and the slide is slidably connected to the guide rod; The second drive mechanism includes a third electric cylinder and a fourth electric cylinder, which are mounted on the sliding bracket, and the piston rods of the third electric cylinder and the fourth electric cylinder are connected to the slide table.

[0008] In some embodiments of this application, the soil sampling mechanism includes a geared motor and a soil sampling rod, the geared motor is fixed on the slide, and the soil sampling rod is coaxially fixed to the output shaft of the geared motor.

[0009] In some embodiments of this application, the soil sampling rod is a hollow tubular structure with a serrated cutting edge at its front end. Inside the soil sampling rod is a piston rod that can move axially relative to the hollow tubular structure.

[0010] In some embodiments of this application, the in-situ sensor includes an acid-base value measurement module and an electrical conductivity measurement module.

[0011] In some embodiments of this application, the looseness measurement component includes a soil looseness sensor and a third drive mechanism. The soil looseness sensor is movably mounted on the slide platform, and the third drive mechanism is mounted on the vehicle-mounted mounting frame or the sliding bracket to drive the soil looseness sensor to move up and down.

[0012] In some embodiments of this application, the third drive mechanism is a fifth electric cylinder, and the piston rod of the fifth electric cylinder is connected to the soil looseness sensor.

[0013] In some embodiments of this application, a first displacement sensor and a second displacement sensor are also included, wherein the first displacement sensor is connected to the slide table and the second displacement sensor is connected to the soil looseness sensor.

[0014] In some embodiments of this application, a control system is also included, which is electrically connected to the first drive mechanism, the second drive mechanism, the third drive mechanism, the soil sampling mechanism, the in-situ sensor, and the soil looseness sensor.

[0015] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include: By integrating multiple functional modules such as soil sampling, in-situ sensing and looseness detection into a single vehicle platform, and designing a two-stage lifting system consisting of a sliding bracket and a sliding table, the system achieves separate control of overall machine height adaptation and precise feeding during operation. The coordinated and automated operation of each functional component significantly improves the overall efficiency and standardization of soil testing, reduces the intensity of manual operation and subjective errors, and provides an efficient and reliable means of rapidly acquiring field soil information for precision agriculture. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the embodiments will be briefly described below: Figure 1 This is a schematic diagram of the structure of a vehicle-mounted multi-functional soil testing device according to an embodiment of this application.

[0017] Figure label: 1-Vehicle mounting bracket, 2-Sliding bracket, 3-First electric cylinder, 4-Second electric cylinder, 5-Third electric cylinder, 6-Fourth electric cylinder, 7-Fifth electric cylinder, 8-First displacement sensor, 9-Second displacement sensor, 10-Slide table, 11-In-situ sensor, 12-First guide rod, 13-Second guide rod, 14-Soil sampling rod, 15-Gear motor, 16-Soil looseness sensor. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] Those skilled in the art will understand that, in this specification, the term "comprising" is an open-ended expression, meaning that the stated feature is present but other features are excluded. Directional terms such as "upper," "lower," "left," and "right" refer to exemplary directions based on the accompanying drawings. Features specified as "first" or "second" implicitly include one or more of that feature. Singular expressions can also be used in plural forms. "Multiple" means two or more. The terms "installed," "connected," and "linked" can refer to a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection via an intermediate medium, and it can be a connection within two components. Furthermore, "linked" can include wireless connections.

[0020] The purpose of this application is to overcome the above-mentioned technical deficiencies and propose a vehicle-mounted multifunctional soil testing device to solve the technical problems of low efficiency, high labor intensity and poor standardization of manual soil sampling and testing in the prior art.

[0021] To achieve the above-mentioned technical objectives, this application adopts the following technical solution: Reference Figure 1 This utility model provides a vehicle-mounted multifunctional soil testing device, comprising: The vehicle mounting bracket 1 serves as the base for the entire device, used to secure it to a vehicle, such as a pickup truck, tractor, or specialized agricultural machinery. The sliding bracket 2 is vertically mounted on the vehicle mounting bracket 1 via linear guide rails or similar means. A first drive mechanism is mounted on the vehicle mounting bracket 1 to drive the sliding bracket 2 to move vertically.

[0022] The sampling and measurement component has a core slide 10, which is also mounted on the sliding bracket 2 in a height-adjustable manner. A second drive mechanism is mounted on the sliding bracket 2 to drive the slide 10 to move up and down relative to the sliding bracket 2.

[0023] The slide table 10 is integrated with a soil sampling mechanism, an in-situ sensor 11, and a looseness measurement component. The soil sampling mechanism is used to drill and obtain soil samples; the in-situ sensor 11 is used to directly insert into the soil to measure its physicochemical parameters during or after soil sampling; and the looseness measurement component is used to measure the compaction of the soil.

[0024] When the device is not in operation, all drive mechanisms are in the retracted position, and the sliding bracket 2 and slide table 10 are in the upper position to ensure the vehicle's ground clearance. Upon reaching the designated testing point, the workflow is as follows: Lowering the entire machine: The control system activates the first drive mechanism, which drives the sliding support 2 and all the components it supports to descend together until the bottom of the entire device is close to the ground, reducing the working height and preparing for subsequent precision operations.

[0025] Sampling and Physicochemical Testing: After the first drive mechanism stops, the control system activates the second drive mechanism, driving the slide 10 to continue descending. At this time, the soil sampling mechanism installed on the slide 10 begins to work; for example, its reduction motor 15 rotates, driving the soil sampling rod 14 to drill into the soil. Simultaneously, the probe of the in-situ sensor 11 also inserts into the soil as the slide 10 descends, beginning to detect parameters such as pH and EC values ​​in real time. The first displacement sensor 8 monitors the descent distance of the slide 10 in real time, i.e., the depth of soil sampling and testing. Once the preset depth is reached, the second drive mechanism stops.

[0026] Looseness detection: According to the control logic, the looseness measurement component can be executed synchronously or sequentially with step 2. Its independent third drive mechanism is activated, pushing the probe of the soil looseness sensor 16 into the soil. The second displacement sensor 9 monitors its insertion depth, and the sensor itself measures the pressure value at different depths, thereby obtaining soil looseness data.

[0027] Reset and Sampling: After all tests are completed, the drive mechanisms operate in reverse order, causing each component to retract. The looseness measurement component resets first, then the slide 10 rises, causing the sampling rod 14 and in-situ sensor 11 to detach from the soil. The sample inside the sampling rod 14 is pushed out and collected. Finally, the sliding support 2 rises as a whole, restoring the vehicle's driving height. The entire process is repeated, achieving multi-point continuous automated testing.

[0028] Through the above-mentioned integrated and hierarchical driven structural design, multiple detection functions are integrated into one, realizing automated collaborative operation. The structure is compact and reasonable, and the functions are comprehensive, which greatly improves the overall performance and efficiency of vehicle-mounted soil detection.

[0029] The first drive mechanism includes a first electric cylinder 3 and a second electric cylinder 4. For example... Figure 1 As shown, the cylinder bodies of the first electric cylinder 3 and the second electric cylinder 4 are symmetrically fixed on the vehicle-mounted mounting bracket 1, and the ends of their piston rods are connected to the sliding bracket 2. By synchronously controlling the extension and retraction of these two electric cylinders, the entire sliding bracket 2 can be smoothly and powerfully driven to perform the first stage of lifting and lowering.

[0030] The dual-cylinder drive structure ensures that the sliding support 2 is subjected to uniform force and runs smoothly during the lifting process, avoiding the shaking or tilting that may be caused by single-point drive, thus ensuring the stability of the overall machine posture and providing a reliable foundation for subsequent precise operations.

[0031] To ensure the accuracy and stability of the lifting and lowering of the slide table 10, the sampling and measurement assembly also includes two parallel guide rods, namely a first guide rod 12 and a second guide rod 13. The upper and lower ends of the first guide rod 12 and the second guide rod 13 are fixedly connected to the frame of the sliding bracket 2. The slide table 10 is provided with corresponding sliding bearings or sliders, which are sleeved and slidably connected to the two guide rods. The second drive mechanism accordingly includes a third electric cylinder 5 and a fourth electric cylinder 6, the cylinder bodies of which are fixed to the sliding bracket 2, and the piston rods are connected to the slide table 10.

[0032] The guide rod provides a stable and precise linear motion guide for the slide table 10, effectively resisting the lateral force or torque that may be generated during the soil sampling process, ensuring that the soil sampling rod and sensor can be inserted vertically and stably into the soil, and ensuring the quality of sampling and testing.

[0033] The soil sampling mechanism specifically includes a geared motor 15 and a soil sampling rod 14. The body of the geared motor 15 is fixedly mounted on the slide table 10, while the hollow soil sampling rod 14 is coaxially fixedly connected to the output shaft of the geared motor 15. When the slide table 10 descends, the geared motor 15 starts to rotate, driving the soil sampling rod 14 to enter the soil in a drilling manner.

[0034] By combining rotational power with linear downward pressure, a drilling-type soil extraction method is formed. Compared with simple static pressing, it can effectively overcome the resistance of soil, especially hard or compacted soil, significantly improve the success rate and efficiency of soil extraction, and better preserve the original structure of the soil sample.

[0035] The structure of the soil sampling rod 14 has been further optimized. It is a hollow tubular structure used to contain the collected soil sample. Its front end, which penetrates the soil, is machined with serrated cutting edges to enhance its ability to cut the soil. More importantly, a piston rod (not shown in the figure) is provided inside the hollow channel of the soil sampling rod 14. This piston rod does not rotate with the soil sampling rod 14 and can be driven by an independent miniature push rod, such as a small electric cylinder or pneumatic cylinder, to move relative to the soil sampling rod 14 in the axial direction, in order to completely push out the soil sample inside the tube after soil sampling is completed.

[0036] The serrated cutting edge reduces drilling resistance; while the internal piston rod enables automated and non-destructive sample extraction, avoiding damage to the sample structure and potential cross-contamination caused by manual retrieval, and facilitating rapid and clean sample collection.

[0037] The in-situ sensor 11 specifically includes a pH measurement module and an EC measurement module. Its probe is inserted into the soil synchronously as the slide 10 descends to perform measurements. Furthermore, to obtain more comprehensive soil information, the in-situ sensor 11 can also integrate a temperature and humidity measurement module, which can simultaneously obtain four key physicochemical parameters of the soil—pH, EC, temperature, and humidity—in a single insertion.

[0038] It integrates the function of synchronous online detection of multiple key soil parameters, and can obtain rich datasets in a single operation, which greatly improves the information density and work efficiency of in-situ field detection, and provides real-time data support for the comprehensive evaluation of soil conditions.

[0039] The structure of the looseness measurement component is specifically defined. It needs to be clarified that, to ensure the independence and accuracy of the measurement and to avoid interference from soil sampling, the looseness measurement component is physically independent of the slide table 10. Specifically, it includes a soil looseness sensor 16 and a third drive mechanism that drives it. The soil looseness sensor 16 is vertically mounted on the sliding support 2 via a bracket, and its third drive mechanism is also correspondingly mounted on the sliding support 2 for independently driving the probe of the soil looseness sensor 16 into the soil.

[0040] Mechanical decoupling of the looseness measurement system from the soil sampling / physicochemical sensing system allows it to have independent drive and motion trajectory, thereby avoiding the disturbance of the surrounding soil during soil sampling from affecting the accuracy of looseness measurement and ensuring the independence and reliability of various test data.

[0041] The third driving mechanism is specifically the fifth electric cylinder 7. The cylinder body of the fifth electric cylinder 7 is fixed on the sliding bracket 2, and its piston rod is connected to the upper part of the soil looseness sensor 16. By precisely controlling the extension and retraction of the fifth electric cylinder 7, the insertion speed and depth of the probe of the soil looseness sensor 16 can be precisely controlled.

[0042] Using an independent electric cylinder as the drive source enables precise programmed control of the porosity measurement process, such as uniform downward pressure. This is crucial for obtaining stable and repeatable pressure-depth relationship data and improves the standardization of porosity measurement.

[0043] Based on the above embodiments, to achieve quantitative monitoring of the operation process, the device is also equipped with a first displacement sensor 8 and a second displacement sensor 9. The first displacement sensor 8 is associated with the sliding table 10. For example, its measuring end is connected to the sliding table, and its fixed end is connected to the sliding bracket, used to accurately detect the displacement of the sliding table 10, thereby obtaining the soil sampling depth and the insertion depth of the in-situ sensor in real time. The second displacement sensor 9 is associated with the soil looseness sensor 16, used to accurately detect the depth of its probe inserted into the soil.

[0044] By using displacement sensors, closed-loop monitoring and precise control of soil sampling and testing depths are achieved, ensuring that each sampling and testing is carried out at a preset, standardized depth, which greatly improves the repeatability of the operation and the comparability of the data.

[0045] Based on the above embodiments, the core of this device is a control system, which typically includes a PLC or embedded controller, a control box, and a touch screen human-machine interface. This control system is electrically connected via cables to all electrical components, including the first drive mechanism (electric cylinders 3 and 4), the second drive mechanism (electric cylinders 5 and 6), the third drive mechanism (electric cylinder 7), the soil sampling mechanism (gear motor 15), the in-situ sensor 11, the soil looseness sensor 16, and the first displacement sensor 8 and the second displacement sensor 9. Operators can set operating parameters, such as the soil sampling depth, through the human-machine interface. After a one-button start, the control system can automatically and coordinately control each component to operate according to the preset logical sequence and parameters.

[0046] The entire device has achieved a high degree of automated control, solidifying the complex multi-task collaborative operation process into a standardized procedure, which greatly reduces the skill requirements for operators, avoids the arbitrariness of human operation, and ensures the efficiency, accuracy and high consistency of the testing work.

[0047] To further improve the performance and reliability of the device, the parameters of each actuator can be optimized. For example, the power of all electric cylinders can be selected between 80-120W, the thrust between 50-100KG, and the stroke between 200-500mm. The geared motor 15 is preferably a DC 12V vehicle power compatible motor with a power between 300-500W and an output speed between 60-120 rpm. Its output shaft has a hollow structure, allowing the hollow piston rod to pass through. The probes of the soil sampling rod 14 and the looseness sensor 16 are both made of 304 stainless steel to ensure corrosion resistance and strength. Their dimensions, such as diameter and length, are selected within a reasonable range according to sampling requirements and soil characteristics. The main structural components, such as the vehicle mounting bracket 1, the sliding bracket 2, and the slide table 10, can be made of 304 stainless steel or aluminum alloy to balance strength, weather resistance, and lightweight.

[0048] By performing specific parameterized selection of key components, the device's driving capability, operating range, durability, and adaptability to the vehicle environment are all optimized, enabling the device to exhibit higher reliability and performance in practical applications.

[0049] The control system integrates an overload protection module that monitors the operating current of the geared motor 15 in real time. When the soil-collecting rod 14 encounters hard obstacles such as rocks during the soil-collecting process, the motor current will increase sharply. Once the detected current exceeds the preset threshold, the control system immediately executes the protection program: stops the descent of the second drive mechanism, and can selectively reverse the geared motor 15 for a moment to release it, while simultaneously issuing an audible and visual alarm to the operator.

[0050] It achieves intelligent overload protection during the soil extraction process, which can effectively prevent motor burnout or mechanical structure damage caused by encountering unexpected obstacles, greatly improving the reliability of the equipment and the safety of operation in complex field environments.

[0051] An automatic cleaning unit, such as a ring-shaped cleaning brush with a high-pressure air nozzle and a nylon brush on the inner wall, is added to the vehicle-mounted mounting bracket 1. After each sampling and measurement task is completed and each probe / sensor is retracted from the soil, the control system can control them to move and pass through the cleaning unit, and then activate the high-pressure air source and / or the rotating brush to automatically blow and brush the outer surface of the soil sampling rod 14 and the probe of the in-situ sensor 11.

[0052] The added automatic cleaning function can effectively remove soil residues attached to key components, fundamentally avoiding cross-contamination between different sampling points and ensuring the purity and accuracy of subsequent samples and test data, which is especially important for high-precision research or monitoring.

[0053] The device integrates a geographic information module, such as a GPS / GNSS receiver, and a data storage module, such as an SD card reader / writer. After each sampling and measurement of a point, the control system automatically binds all the measured data (pH value, EC value, porosity, depth, etc.) with the current geographic coordinates (latitude and longitude) obtained by the geographic information module to form a complete data record package, which is then stored in the data storage module.

[0054] This system enables the automatic association and storage of soil property data with geospatial information, achieving integrated map-data collection. This provides raw data with precise geographic labels for subsequent generation of various precision agriculture prescription maps, such as soil nutrient distribution maps and compaction distribution maps, using GIS and other software, greatly enhancing the application value of the detection data.

[0055] The sampling and measurement components are designed as modular toolheads that can be quickly replaced. The bottom of the slide 10 features a standardized mechanical quick-change interface, such as a dovetail groove with locking pin, and an electrical interface, such as a self-locking aviation plug. Different toolhead modules can integrate different functional combinations; for example, one module could be "soil sampling + pH / EC," while another could be "soil sampling + soil near-infrared spectroscopy analysis." Users can quickly change the appropriate toolhead according to different testing tasks.

[0056] The innovative modular design greatly enhances the device's functional scalability and task adaptability. Users do not need to purchase multiple complete units; they only need to configure different functional tool heads to detect more soil parameters, such as organic matter, nitrogen, phosphorus, potassium, and heavy metals, thus upgrading the device from a dedicated piece of equipment into a multi-functional soil testing platform.

[0057] The soil looseness sensor 16 has been upgraded by incorporating a multi-point pressure sensor array along the length of its probe, instead of a single end sensor. As the probe is inserted into the soil, the control system simultaneously collects and records the pressure values ​​from each sensor at different depths. Benefits: Upgrading from single-point looseness measurement to vertical profile measurement allows for the acquisition of continuous or semi-continuous data on soil compaction with depth in a single operation. This enables precise diagnosis of the location, thickness, and strength of the plow pan, providing more refined and comprehensive data for decision-making regarding agronomic practices such as deep tillage.

[0058] Compared with the prior art, the beneficial technical effects of the technical solution provided in this application include: Through innovative structural design and functional integration, a highly automated, multifunctional, efficient, and high-precision vehicle-mounted soil testing device is provided. It not only significantly reduces the operator's workload but also ensures data reliability and consistency through standardized operating procedures. Furthermore, through various optimized implementation schemes, it demonstrates significant improvements in equipment reliability, data purity, information value, and functional scalability, effectively meeting the urgent needs of modern precision agriculture development.

[0059] Those skilled in the art will understand that the steps, measures, and schemes in the various operations, methods, processes, and procedures discussed in this application can be alternated, modified, rearranged, decomposed, combined, or deleted.

[0060] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Any other corresponding changes and modifications made based on the technical concept of this application should be included within the scope of protection of the claims of this application.

Claims

1. A vehicle-mounted multifunctional soil testing device, characterized in that, include: Vehicle mounting bracket; A sliding bracket is mounted on the vehicle-mounted mounting frame in a height-adjustable manner; A first drive mechanism is mounted on the vehicle-mounted mounting frame to drive the sliding bracket to rise and fall; The sampling and measurement component includes a slide table, a second drive mechanism, a soil sampling mechanism, an in-situ sensor, and a looseness measurement component. The slide platform is vertically mounted on the sliding support; the second drive mechanism is mounted on the sliding support and drives the slide platform to move up and down relative to the sliding support; the soil sampling mechanism, the in-situ sensor, and the looseness measurement component are all mounted on the slide platform and are used to drill soil and detect the physical and chemical parameters and looseness of the soil, respectively.

2. The vehicle-mounted multifunctional soil testing device according to claim 1, characterized in that, The first drive mechanism includes a first electric cylinder and a second electric cylinder, which are fixed to the vehicle mounting bracket, and the piston rods of the first electric cylinder and the second electric cylinder are connected to the sliding bracket.

3. The vehicle-mounted multifunctional soil testing device according to claim 1, characterized in that, The sampling and measurement assembly further includes a guide rod, which is fixedly connected to the sliding bracket, and the slide table is slidably connected to the guide rod; The second drive mechanism includes a third electric cylinder and a fourth electric cylinder, which are mounted on the sliding bracket, and the piston rods of the third electric cylinder and the fourth electric cylinder are connected to the slide table.

4. The vehicle-mounted multifunctional soil testing device according to claim 1, characterized in that, The soil sampling mechanism includes a geared motor and a soil sampling rod. The geared motor is fixed on the slide table, and the soil sampling rod is coaxially fixed to the output shaft of the geared motor.

5. The vehicle-mounted multifunctional soil testing device according to claim 4, characterized in that, The soil sampling rod is a hollow tubular structure with a serrated cutting edge at its front end. Inside the soil sampling rod is a piston rod that can move axially relative to the hollow tubular structure.

6. The vehicle-mounted multifunctional soil testing device according to claim 1, characterized in that, The in-situ sensor includes a pH measurement module and a conductivity measurement module.

7. The vehicle-mounted multifunctional soil testing device according to claim 1, characterized in that, The looseness measurement component includes a soil looseness sensor and a third drive mechanism. The soil looseness sensor is movably mounted on the slide platform, and the third drive mechanism is mounted on the vehicle-mounted fixed frame or the sliding bracket to drive the soil looseness sensor to move up and down.

8. The vehicle-mounted multifunctional soil testing device according to claim 7, characterized in that, The third driving mechanism is a fifth electric cylinder, and the piston rod of the fifth electric cylinder is connected to the soil looseness sensor.

9. The vehicle-mounted multifunctional soil testing device according to claim 7, characterized in that, It also includes a first displacement sensor and a second displacement sensor, the first displacement sensor being connected to the slide table and the second displacement sensor being connected to the soil looseness sensor.

10. The vehicle-mounted multifunctional soil testing device according to claim 7, characterized in that, It also includes a control system, which is electrically connected to the first drive mechanism, the second drive mechanism, the third drive mechanism, the soil sampling mechanism, the in-situ sensor, and the soil looseness sensor.

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