Biological soil crust penetration resistance measuring device

Abstract

The utility model relates to the technical field of soil detection, in particular to a biological soil crust penetration resistance measuring device which comprises a support, a data acquisition assembly, a measuring assembly and a driving assembly, the measuring assembly and the driving assembly are arranged on the support, and the measuring assembly comprises a probe and a pressure sensor. The fixed end of the probe is connected with the pressure sensor, the insertion end of the probe faces to-be-detected soil, the driving assembly is connected with the pressure sensor to drive the probe to be inserted into the to-be-detected soil or pulled out of the to-be-detected soil, and the data acquisition assembly is connected with the pressure sensor. The support, the measuring assembly and the data collecting assembly are closely connected to form an organic whole, and the biological soil crust penetration resistance measuring device is simple in structure, stable in structure, suitable for various severe environments during indoor measurement and field investigation, capable of rapidly, accurately and continuously measuring biological soil crust penetration resistance, easy and convenient to operate and convenient to carry.

Description

Technical Field

[0001] The utility model relates to the technical field of soil detection, in particular to a biological soil crust penetration resistance measuring device. Background Art

[0002] Biological soil crust is composed of different kinds of mosses, lichens, algae, fungi and bacteria, which together with the thin soil below form a composite biological soil crust layer. The formation of biological soil crust makes the physical, chemical and biological properties of the soil surface significantly different from loose sand, and has a strong ability to resist wind and water erosion. At the same time, it is also an important basis for vegetation succession in arid and semi-arid desert areas. The penetration resistance of biological soil crust is an important parameter to characterize the mechanical stability of biological soil crust, the ability of biological soil crust matrix to resist penetration by foreign objects, and an important indicator to quantitatively describe the mechanical characteristics of biological soil crust. As a force that characterizes the mechanical and physical properties of biological soil crust, it can be described by parameters such as cone index and mechanical resistance. Due to the thin thickness of biological soil crust, it is difficult to quickly, accurately and continuously determine the penetration resistance of biological soil crust to quantitatively describe the penetration resistance of biological soil crust.

[0003] The existing soil penetration resistance measurement methods mainly include four categories: discontinuous measurement method, continuous measurement method, telemetry method and indirect measurement method, but their working objects are all soil. The commonly used discontinuous measurement method is the soil cone index meter (soil penetration meter) measurement method. Although the handheld cone index meter has a simple structure, convenient operation, and easy measurement process, the handheld cone index meter is operated by human propulsion, so it is difficult to maintain uniform penetration into the soil. In addition, the instrument is large, the range is large, the accuracy is low, it cannot be applied to biological soil crust, and it is difficult to maintain an absolute vertical measurement state with the ground, which are important factors affecting the measurement error of the handheld cone index meter. The measurement device is simple in structure and cannot achieve continuous measurement. Hydraulic devices and motor-driven cone index meters have been produced one after another, but these two cone index meters are difficult to put into practical use due to their complex structures and bulky bodies. The continuous measurement methods mainly include mechanical strain gauge devices, vehicle-mounted soil tillage resistance measurement devices, etc. Strain gauges are not easy to install, and the quality of their installation process directly affects the measurement accuracy, and long-term work will lead to low accuracy; the structure of the vehicle-mounted soil tillage resistance measuring device is more complicated than other methods, and the data measured by infrared rays is inaccurate, the parts are difficult to obtain, and it is not easy to assemble. The cost is high and it is difficult to use widely. The remote sensing method attempts to use remote sensing technology to analyze the remote sensing images of the ground spectrum to find the correlation between the remote sensing images and the mechanical resistance of the soil. However, its test results fluctuate greatly, the accuracy is not high, and it is affected by many uncertain factors. The indirect method attempts to predict the cone index by measuring the volume coefficient, dry bulk density, soil particle density and soil water content of the soil, and measure the mechanical resistance of the soil. When the indirect method measures the mechanical resistance of the soil, it will be affected by multiple factors, and there are many parameters to be measured. The measurement results need to be converted or indirectly calculated. The readings are not intuitive enough and the operation is complicated. Therefore, the reliability of this method is poor and its feasibility remains to be verified. Utility Model Content

[0004] The utility model provides a biological soil crust penetration resistance measuring device, which is used to solve one of the defects in the prior art. It has a simple structure and a stable structure, is suitable for indoor measurement and various harsh environments during field investigation, and can quickly, accurately and continuously measure the biological soil crust penetration resistance.

[0005] The utility model provides a biological soil crust penetration resistance measuring device, comprising a bracket, a data acquisition component, and a measuring component and a driving component arranged on the bracket, wherein the measuring component comprises a probe and a pressure sensor, the bracket is used to be set up on the soil to be measured, the fixed end of the probe is connected to the pressure sensor, the insertion end of the probe faces the soil to be measured, the driving component is connected to the pressure sensor to drive the probe to be inserted into the soil to be measured or pulled out of the soil to be measured, and the data acquisition component is connected to the pressure sensor.

[0006] According to a biological soil crust penetration resistance measuring device provided by the utility model, the driving assembly includes a controller, a motor and a transmission component. The controller is connected to the motor to control the motor to rotate forward and reverse at a uniform speed. The motor is connected to the pressure sensor through the transmission component to drive the probe to reciprocate in a uniform straight line.

[0007] According to a biological soil crust penetration resistance measuring device provided by the utility model, the probe is vertically arranged, the vertical distance between the insertion end of the probe and the surface of the soil to be tested is 3 to 5 cm, and the insertion end of the probe is inserted into the soil to be tested to a depth of at least 5 cm.

[0008] According to a biological soil crust penetration resistance measuring device provided by the utility model, the transmission component includes a gear and a rack, the gear is coaxially connected to the motor, the rack is meshingly connected to the gear, and the pressure sensor is connected to the rack.

[0009] According to a biological soil crust penetration resistance measuring device provided by the utility model, the bracket is provided with a limiting groove, the rack is embedded in the limiting groove and is slidably connected with the limiting groove.

[0010] According to a biological soil crust penetration resistance measuring device provided by the utility model, the data acquisition component includes a signal amplifier and a data collector, the signal amplifier is connected to the pressure sensor to strengthen the analog signal of the pressure sensor into a voltage signal, and the data collector is connected to the signal amplifier to record and store the voltage signal of the signal amplifier in real time.

[0011] According to a biological soil crust penetration resistance measuring device provided by the utility model, the measuring component and the driving component are both detachably connected to the bracket, and the data acquisition component is detachably arranged on the bracket.

[0012] According to a biological soil crust penetration resistance measuring device provided by the utility model, the bracket includes at least three supporting legs and a platform, all of the supporting legs are rotatably connected to the platform, and the measuring component, the driving component and the data acquisition component are all arranged on the platform.

[0013] According to a biological soil crust penetration resistance measuring device provided by the utility model, a slideway is provided on the bottom surface of the platform, and the end of the supporting leg is embedded in the slideway, which is suitable for adjusting the supporting position of the supporting leg on the platform.

[0014] According to a biological soil crust penetration resistance measuring device provided by the utility model, the support leg comprises a telescopic portion, and the telescopic portion can be telescoped along the axial direction of the support leg so that the length of the support leg is 30 to 40 cm.

[0015] The utility model provides a biological soil crust penetration resistance measuring device, wherein a bracket is supported above the soil to be measured, that is, a measuring component and a driving component are placed above the soil to be measured, the driving component is connected to the fixed end of the probe through a pressure sensor, the driving component drives the pressure sensor to move, and then synchronously drives the probe to move, and the insertion end of the probe can be inserted into the soil to be measured from above the soil to be measured under the drive of the driving component, and can also be pulled out from the soil to be measured to above the soil to be measured.

[0016] When the insertion end of the probe is not inserted into the soil to be tested, the position of the insertion end is defined as the initial position. When the insertion end of the probe is inserted into the soil to be tested and stops moving at the specified position, the position of the insertion end is defined as the end position. In the process of the probe moving from the initial position to the end position, the pressure sensor can detect the resistance encountered by the insertion end in real time, and the data acquisition component is connected to the pressure sensor, which can collect the detection signal of the pressure sensor in time. Thus, through the cooperation of the probe, the pressure sensor and the data acquisition component, the resistance data is obtained from the time when the probe contacts the biological soil crust on the soil to be tested. After that, the probe is slowly inserted into the soil to be tested at a set speed, and the resistance data is automatically measured and recorded at a high frequency until the probe reaches the end position and stops moving. In this way, a complete continuous soil resistance data curve is obtained from the surface of the biological soil crust of the soil to be tested to the depth of the soil to be tested at the end position.

[0017] The support, measuring component and data acquisition component of the utility model are closely connected to form an organic whole. It can be used as an automated biological soil crust penetration resistance rapid and continuous measuring device. It has a simple structure and a stable structure. It is suitable for indoor measurements and various harsh environments during field surveys. It can quickly, accurately and continuously measure the biological soil crust penetration resistance. It is easy to operate and carry. It has strong scalability and can be used to measure the penetration resistance of biological soil crusts of different thicknesses. The existing soil penetration resistance measuring device is optimized and improved to improve the efficiency and accuracy of the biological soil crust penetration resistance measurement.

[0018] In addition to the technical problems solved by the utility model, the technical features of the technical solutions constituted, and the advantages brought about by the technical features of these technical solutions described above, other technical features of the utility model and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 1 It is a structural schematic diagram of a biological soil crust penetration resistance measuring device provided by the utility model;

[0021] Figure 2 It is a structural schematic diagram of a driving component of a biological soil crust penetration resistance measuring device provided by the utility model;

[0022] Figure 3 It is a structural schematic diagram of a data acquisition component of a biological soil crust penetration resistance measuring device provided by the utility model;

[0023] Figure 4 It is a structural schematic diagram of a bracket of a biological soil crust penetration resistance measuring device provided by the utility model.

[0024] Reference numerals:

[0025] 100, bracket; 110, supporting leg; 120, platform;

[0026] 200, data acquisition component; 210, signal amplifier; 220, data acquisition device;

[0027] 300, measuring component; 310, probe; 311, fixing end; 312, insertion end; 320, pressure sensor;

[0028] 400, driving assembly; 410, controller; 420, motor; 421, stepping motor; 422, driver; 430, transmission component;

[0029] 500, power supply; 600, soil to be tested. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the implementation of the present utility model in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0031] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0033] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] In addition, in the description of the embodiments of the present utility model, unless otherwise specified, "multiple", "multiple roots", and "multiple groups" mean two or more, and "several", "several roots", and "several groups" mean one or more.

[0035] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0036] like Figure 1 As shown, the biological soil crust penetration resistance measuring device provided by the embodiment of the utility model includes a bracket 100, a data acquisition component 200, and a measuring component 300 and a driving component 400 arranged on the bracket 100. The measuring component 300 includes a probe 310 and a pressure sensor 320. The bracket 100 is used to be set up on the soil 600 to be tested. The fixed end 311 of the probe 310 is connected to the pressure sensor 320, and the insertion end 312 of the probe 310 faces the soil 600 to be tested. The driving component 400 is connected to the pressure sensor 320 to drive the probe 310 to be inserted into the soil 600 to be tested or pulled out of the soil 600 to be tested. The data acquisition component 200 is connected to the pressure sensor 320.

[0037] In the biological soil crust penetration resistance measuring device of the embodiment of the utility model, the bracket 100 is supported above the soil 600 to be measured, that is, the measuring component 300 and the driving component 400 are placed above the soil 600 to be measured, and the driving component 400 is connected to the fixed end 311 of the probe 310 through the pressure sensor 320. The driving component 400 drives the pressure sensor 320 to move, thereby synchronously driving the probe 310 to move. The insertion end 312 of the probe 310 can be inserted into the soil 600 to be measured from above the soil 600 under the drive of the driving component 400, and can also be pulled out from the soil 600 to be measured to the top of the soil 600 to be measured.

[0038] When the insertion end 312 of the probe 310 is not inserted into the soil 600 to be tested, the position of the insertion end 312 is defined as the initial position. When the insertion end 312 of the probe 310 is inserted into the soil 600 to be tested and stops moving at the specified position, the position of the insertion end 312 is defined as the end position. In the process of the probe 310 moving from the initial position to the end position, the pressure sensor 320 can detect the resistance of the insertion end 312 in real time, and the data acquisition component 200 is connected to the pressure sensor 320, and can collect the detection signal of the pressure sensor 320 in time. Thus, through the cooperation of the probe 310, the pressure sensor 320 and the data acquisition component 200, the resistance data is obtained from the time when the probe 310 contacts the biological soil crust on the soil 600 to be tested. Thereafter, the probe 310 is slowly inserted into the soil 600 to be tested at a set speed, and the resistance data is automatically measured and recorded at high frequency until the probe 310 reaches the end position and stops moving. In this way, a complete continuous soil resistance data curve from the biological soil crust surface of the soil 600 to be tested to the end position at the depth of the soil 600 to be tested is obtained.

[0039] The support 100, the measuring component 300 and the data acquisition component 200 of the utility model are closely connected and form an organic whole. They can be used as an automated biological soil crust penetration resistance rapid and continuous measuring device. They have a simple structure and a stable structure. They are suitable for indoor measurements and various harsh environments during field surveys. They can quickly, accurately and continuously measure the biological soil crust penetration resistance. At the same time, they are easy to operate and carry. They have strong scalability and can be used to measure the penetration resistance of biological soil crusts of different thicknesses. The existing soil penetration resistance measuring device is optimized and improved to improve the efficiency and accuracy of the biological soil crust penetration resistance measurement.

[0040] In this embodiment, during the process of contacting the soil, the resistance encountered by the probe 310 will be recorded by the pressure sensor 320. The range of the pressure sensor 320 is 0-50N, which is much larger than the penetration resistance encountered by the probe 310.

[0041] like Figure 2 As shown, according to an embodiment provided by the utility model, the driving assembly 400 includes a controller 410, a motor 420 and a transmission component 430. The controller 410 is connected to the motor 420 to control the motor 420 to rotate forward and reverse at a uniform speed. The motor 420 is connected to the pressure sensor 320 through the transmission component 430 to drive the probe 310 to reciprocate in a uniform straight line.

[0042] In this embodiment, the motor 420 can be a combination of a stepper motor 421420 and a driver 422, and the controller 410 and the driver 422 are a matching set of the stepper motor 421420. A power supply 500 is provided to power the stepper motor 421420, and the power supply 500 can be a direct current power supply battery, which can provide a voltage of 5-24V. The driving force of the stepper motor 421420 is much greater than the maximum measurable force of the pressure sensor 320, and the step loss of the motor 420 can be avoided. The controller 410 transmits the pulse signal sent to the driver 422, and the driver 422 converts the pulse signal into the current signal required by the stepper motor 421420. The controller 410 can accurately control every angle that the stepper motor 421420 rotates, so that the stepper motor 421420 rotates at a uniform speed according to the set frequency. The controller 410 can also accurately control the forward and reverse rotation of the stepper motor 421420, thereby driving the pressure sensor 320 and the probe 310 to move back and forth, that is, the probe 310 moves back and forth in a straight line between the initial position and the end position, so that the insertion end 312 of the probe 310 is inserted into the soil 600 to be tested, and then the probe 310 is pulled out of the soil 600 to be tested.

[0043] In this embodiment, the controller 410 cooperates with the motor 420 to improve the degree of automation of the motion control of the probe 310, so that the probe 310 can be kept evenly inserted into the soil 600 to be tested, ensuring that the detection signal of the pressure sensor 320 is more accurate. The forward and reverse rotation of the motor 420 cooperates with the transmission component 430 to drive the probe 310 to move, so that the probe 310 can move back and forth between the initial position and the end position, and the motion control is simpler, more direct and efficient.

[0044] According to an embodiment provided by the utility model, the probe 310 is vertically arranged, the vertical distance between the insertion end 312 of the probe 310 and the surface of the soil 600 to be tested is 3 to 5 cm, and the depth of the insertion end 312 of the probe 310 inserted into the soil 600 to be tested is at least 5 cm. In this embodiment, the probe 310 is arranged in a vertical state, the axial direction of the probe 310 is perpendicular to the surface of the soil 600 to be tested, and the probe 310 is inserted into the soil 600 to be tested from top to bottom under the drive of the motor 420, or pulled out from the soil 600 to be tested from bottom to top. The insertion end 312 is the lowest end of the probe 310. Considering that the actual height of the probe 310 should adapt to the uneven ground and the like, the insertion end 312 is 3 to 5 cm away from the surface of the soil 600 to be tested. In order to ensure that the probe 310 can completely penetrate the biological soil crust during the insertion process of the probe 310 into the soil 600 to be tested, the depth of the probe 310 inserted into the soil 600 to be tested is set to be at least 5 cm.

[0045] In this embodiment, the length of the probe 310 can be 15-20 cm, and the diameter can be 2-3 mm. The total length of the probe 310 is to take into account the total depth of insertion into the soil, that is, to measure the penetration resistance of the soil 600 to be tested within the depth range. The diameter of the probe 310 cannot be too thin, otherwise it is easy to break and encounter problems such as soil pores causing the measurement data to be too sensitive. It cannot be too thick, otherwise it will be difficult to insert, and the resistance data will be too large and the sensitivity will be too low.

[0046] According to an embodiment provided by the utility model, the transmission component 430 includes a gear and a rack, the gear is coaxially connected to the motor 420, the rack is meshed with the gear, and the pressure sensor 320 is connected to the rack. In this embodiment, the gear and the rack cooperate as the transmission component 430, the output shaft of the motor 420 is coaxially connected to the gear, the motor 420 drives the gear to rotate, the gear is meshed with the rack, and then drives the rack to move back and forth in a straight line in the vertical direction, that is, when the motor 420 rotates forward, the gear rotates forward and then drives the rack to move from top to bottom, and when the motor 420 rotates reversely, the gear rotates reversely and then drives the rack to move from bottom to top. The pressure sensor 320 is connected to the rack, thereby realizing the linear reciprocating movement of the probe 310 in the vertical direction, thereby realizing the uniform rotation of the motor 420 into the uniform lifting and lowering movement of the measuring component 300 in the vertical direction through the transmission component.

[0047] According to an embodiment provided by the utility model, the bracket 100 is provided with a limiting groove, the rack is embedded in the limiting groove, and is slidably connected with the limiting groove. In this embodiment, the bracket 100 is provided with a limiting groove, and the limiting groove extends in the vertical direction in coordination with the moving direction of the rack, the toothed portion of the rack meshes with the gear, and the back of the rack is embedded in the limiting groove. In the process of the gear rotating to drive the rack to move up and down, the rack slides in the limiting groove, and the limiting groove can not only support and position the rack, but also guide the movement of the rack.

[0048] like Figure 3 As shown, according to an embodiment provided by the utility model, the data acquisition component 200 includes a signal amplifier 210 and a data acquisition device 220. The signal amplifier 210 is connected to the pressure sensor 320 to strengthen the analog signal of the pressure sensor 320 into a voltage signal. The data acquisition device 220 is connected to the signal amplifier 210 to record and store the voltage signal of the signal amplifier 210 in real time.

[0049] In this embodiment, the data acquisition component 200 is mainly composed of a signal amplifier 210 and a data acquisition device 220. The signal amplifier 210 can strengthen the analog signal from the pressure sensor 320 into a linear 0-5V signal; the data acquisition device 220 can record and store the voltage signal from the signal amplifier 210 in real time. The data acquisition component 200 can make the biological soil crust penetration resistance measuring device of this embodiment more accurate in data recording and more reliable.

[0050] The biological soil crust penetration resistance measuring device of this embodiment is placed on the soil to be tested 600 through the bracket 100, and the power supply 500 is closed. The controller 410 controls the motor 420 to work according to the set frequency. The uniform rotation of the motor 420 drives the transmission component 430 to perform uniform linear reciprocating motion in the vertical direction, thereby driving the pressure sensor 320 and the probe 310 to perform uniform linear reciprocating motion in the vertical direction. In the process of penetrating the biological soil crust, the resistance encountered by the probe 310 will be recorded by the pressure sensor 320. The analog signal measured by the pressure sensor 320 is enhanced by the signal amplifier 210 to a linear 0-5V signal, and is received and recorded by the data acquisition device 220. When the probe 310 penetrates the biological soil crust to a certain depth, the transmission component 430 drives the probe 310 to move upward until it returns to its original position.

[0051] According to an embodiment provided by the utility model, the measuring component 300 and the driving component 400 are both detachably connected to the bracket 100, and the data acquisition component 200 is detachably arranged on the bracket 100. In this embodiment, the measuring component 300, the driving component 400 and the data acquisition component are modularly processed, and can be disassembled and installed on the bracket 100. The weight is relatively light, which is convenient for carrying in the field, and each component is easy to obtain and can be selectively assembled according to actual needs.

[0052] like Figure 4 As shown, according to an embodiment provided by the utility model, the bracket 100 includes at least three support legs 110 and a platform 120, all the support legs 110 are rotatably connected to the platform 120, and the measuring component 300, the driving component 400 and the data acquisition component 200 are all arranged on the platform 120. In this embodiment, the main body of the bracket 100 is the platform 120 and the support legs 110, the platform 120 is horizontally arranged above the soil 600 to be measured, the support legs 110 are supported below the platform 120, and are used to fix the position of the platform 120, the measuring component 300, the driving component 400 and the data acquisition component 200 are detachably installed on the platform 120, and the support legs 110 can be rotatably connected to the platform 120 at a certain angle, so as to facilitate the overall storage and transportation of the bracket 100. There are at least three support legs 110, forming a basic plane positioning support, and the number of the support legs can be increased according to actual needs.

[0053] In this embodiment, the material of the bracket 100 can be aluminum or stainless steel, the length of the platform 120 is 40-50 cm, the width is 30-40 cm, and the height of the support leg 110 is 30-40 cm.

[0054] According to an embodiment provided by the utility model, a slideway is provided on the bottom surface of the platform 120, and the end of the support leg 110 is embedded in the slideway, which is suitable for adjusting the support position of the support leg 110 on the platform 120. In this embodiment, a slideway is provided on the bottom surface of the platform 120, and the upper end of the support leg 110 is inserted into the slideway, and the support leg 110 can move in the slideway along the extension direction of the slideway, thereby changing the support position of the upper end of the support leg 110 on the support leg 110, thereby, by adjusting the position of the support leg 110 in the slideway, the distribution of each support leg 110 below the platform 120 can be adjusted accordingly.

[0055] In this embodiment, the support legs 110 are arranged in one-to-one correspondence with the slides, and the extension direction of each slide can change the relative distance between the support legs 110. Within the range of the platform 120, the support legs 110 can be close to each other or away from each other. In this way, the support range of the bracket 100 is changed to adapt to soils in different positions or areas. A corresponding limiting part can also be set on the slide. After the support leg 110 slides to the desired position, the support leg 110 can be limited and fixed by the limiting part.

[0056] According to an embodiment provided by the utility model, the support leg 110 includes a telescopic portion, which can be telescopic along the axial direction of the support leg 110, so that the length of the support leg 110 is 30 to 40 cm. In this embodiment, the support leg 110 is a telescopic member, and the overall axial length of the support leg 110 is changed by the telescopic portion, thereby adjusting the distance between the platform 120 and the soil 600 to be tested, which can adapt to components carried by different models of the platform 120, and can also adapt to different surface flatness of the soil 600 to be tested.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A biological soil crust penetration resistance measuring device, characterized in that: The invention comprises a bracket, a data acquisition component, and a measuring component and a driving component arranged on the bracket, wherein the measuring component comprises a probe and a pressure sensor, the bracket is used to be erected on the soil to be tested, the fixed end of the probe is connected to the pressure sensor, the insertion end of the probe faces the soil to be tested, the driving component is connected to the pressure sensor to drive the probe to be inserted into the soil to be tested or pulled out of the soil to be tested, and the data acquisition component is connected to the pressure sensor; the bracket comprises at least three supporting legs and a platform, all of the supporting legs are rotatably connected to the platform, the measuring component, the driving component and the data acquisition component are all arranged on the platform; a slide is provided on the bottom surface of the platform, and the ends of the supporting legs are embedded in the slide, which is suitable for adjusting the supporting position of the supporting legs on the platform.

2. The biological soil crust penetration resistance measuring device according to claim 1, characterized in that: The driving assembly includes a controller, a motor and a transmission component. The controller is connected to the motor to control the motor to rotate forward and reverse at a uniform speed. The motor is connected to the pressure sensor through the transmission component to drive the probe to reciprocate in a uniform linear manner.

3. The biological soil crust penetration resistance measuring device according to claim 2, characterized in that: The probe is arranged vertically, the vertical distance between the insertion end of the probe and the surface of the soil to be tested is 3-5 cm, and the insertion end of the probe is inserted into the soil to be tested to a depth of at least 5 cm.

4. The biological soil crust penetration resistance measuring device according to claim 2, characterized in that: The transmission component comprises a gear and a rack, the gear is coaxially connected to the motor, the rack is meshingly connected to the gear, and the pressure sensor is connected to the rack.

5. The biological soil crust penetration resistance measuring device according to claim 4, characterized in that: The bracket is provided with a limiting groove, and the rack is embedded in the limiting groove and slidably connected with the limiting groove.

6. The biological soil crust penetration resistance measuring device according to claim 1, characterized in that: The data acquisition component includes a signal amplifier and a data collector. The signal amplifier is connected to the pressure sensor to strengthen the analog signal of the pressure sensor into a voltage signal. The data collector is connected to the signal amplifier to record and store the voltage signal of the signal amplifier in real time.

7. The biological soil crust penetration resistance measuring device according to any one of claims 1 to 6, characterized in that: The measuring component and the driving component are both detachably connected to the bracket, and the data acquisition component is detachably arranged on the bracket.

8. The biological soil crust penetration resistance measuring device according to claim 7, characterized in that: The support leg comprises a telescopic portion, and the telescopic portion can be telescoped along the axial direction of the support leg so that the length of the support leg is 30-40 cm.

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