Grassland soil detection device and detection method

Abstract

The invention belongs to the technical field of soil detection, and discloses a grassland soil detection device and method.The detection device comprises a sheath, three probes are slidably connected to the bottom end of the inner wall of the sheath, a control display screen is embedded in the top end of the sheath, and a tightness adjusting assembly is fixedly installed in the middle of the bottom end of the sheath; the tightness adjusting assembly comprises a rotating ring rotationally connected to the interior of the sheath, a polygonal wheel used for extruding and fixing the probe is fixedly mounted at the top end of the rotating ring, and a boss is rotationally connected to the top end of the polygonal wheel, so that the probe can be protected conveniently; according to the probe, the phenomenon that the probe collides with a hard object and is bent and damaged is prevented, the position of the probe can be monitored in real time, an operator can carry out adjustment according to actual conditions, repeated detection caused by displacement of the probe is avoided, detection time and resources are saved, and meanwhile the authenticity and comparability of a detection result are guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of soil detection, and in particular relates to a grassland soil detection device and a detection method. Background Art

[0002] In the development stage of modern agriculture, the healthy management of grassland soil has become particularly important. Grassland is an important foundation for the growth of forage grass, and the quality of soil directly affects the growth of forage grass and the health of animals. Traditional soil testing methods often rely on manual sampling and laboratory analysis. This testing method is not only inefficient but also costly. For this reason, researchers and engineers have developed a series of soil testing instruments that can quickly and accurately obtain various soil parameters, such as pH value, nutrient content, organic matter content, etc., so as to provide a scientific basis for grassland soil management; With the advancement of technology, grassland soil testing technology is developing in the direction of portability and automation. The existing soil testing device first inserts the probe as deep as possible into the soil, leaving about 1 cm above the probe. At this time, the probe is used to detect the information inside the soil, and then the touch screen is used to display it; However, when the probe is inserted into the soil, it is not convenient to observe the soil inside the soil, which causes the probe to collide with the stone, which is very likely to cause damage to the probe, thus affecting the service life. Summary of the invention

[0003] The present invention aims at the problem in the prior art that when the probe is inserted into the soil, it is inconvenient to observe the soil inside the soil, which causes the probe to collide with stones, easily causing damage to the probe, thereby shortening the service life. The present invention proposes the following technical solutions: A grassland soil detection device comprises a sheath, three probes are slidably connected to the bottom end of the inner wall of the sheath, a control display screen is embedded in the top end of the sheath, a tightness adjustment component is fixedly installed in the middle of the bottom end of the sheath, the tightness adjustment component comprises a rotating ring rotatably connected to the inside of the sheath, a polygonal wheel for squeezing and fixing the probe is fixedly installed on the top end of the rotating ring, a boss is rotatably connected to the top end of the polygonal wheel, a main shaft with a bearing function is equidistantly rotatably connected to the outer surface of the boss, a roller is fixedly connected to the outer side of one end of the main shaft and the roller is in contact with the outer side of the probe, a rotary encoder is connected to the other end of the main shaft, and a synchronous stretching component is arranged at the bottom end of the sheath.

[0004] As a preferred embodiment of the above technical solution, a rubber pad is sleeved on the outer side of the polygonal wheel, and anti-slip grooves are equidistantly provided in the middle of the rubber pad. The polygonal wheel is a triangular cam, and the maximum radius of the three sides of the polygonal wheel is the same.

[0005] Preferably, as the above technical solution, two manual telescopic rods are symmetrically embedded and installed in the middle of the bottom end of the polygonal wheel. A same gear is clamped and installed between the bottom ends of the two manual telescopic rods, and a handle is integrally formed at the bottom end of the gear.

[0006] Preferably, as the above technical solution, an inner serrated ring is meshed and connected to the outside of the gear. The inner serrated ring is fixedly installed inside the sheath. A fillet is provided at the bottom edge of the inner wall of the inner serrated ring, and an arc angle is provided at the top of the outer surface of the gear.

[0007] Preferably, as the above technical solution, a rectangular rod is slidably connected inside the boss and the rectangular rod is fixedly installed inside the sheath. Three connecting rods are equidistantly welded on the outer surface of the boss. The main shaft is rotatably connected inside the connecting rods, and the rotary encoder is fixedly installed at one end of the connecting rods.

[0008] Preferably, as the above technical solution, the synchronous stretching assembly includes a fixing ring vertically movably connected to the bottom end of the sheath. A clamping block is fixedly installed on the outer surface of the fixing ring, and a clamping block is movably connected inside the fixing ring.

[0009] Preferably, as the above technical solution, the fixing ring is composed of three circles combined. The three circles are fixedly connected by connecting bars. The clamping block is fixedly installed on the outside of the innermost circle, and the clamping block is movably connected between the middle circle and the innermost circle.

[0010] Preferably, as the above technical solution, a rotating ring is threadedly connected to the edge of the inner wall of the outermost circle of the fixing ring. A driving arm is rotatably connected to the bottom end of the rotating ring. A convex column is fixedly installed in the middle of the bottom end of the driving arm. A horizontal rod is vertically movably connected to the outside of the convex column. The horizontal rod is horizontally movably connected inside the middle circle of the fixing ring, and a fixed connection is made between one end of the horizontal rod and one end of the clamping block.

[0011] The present invention also provides a detection method for a grassland soil detection device, including the following steps: Step 1: Power on: Power on the soil detection device; Step 2: Pull out the probe: Clamp a plurality of probes through the synchronous stretching assembly, then pull the probe to move, and then separate the synchronous stretching assembly from the probe and reset it; Step 3: Fix the probe: Clamp and fix the probe through the tightness adjustment assembly; Step 4: Soil detection: Insert the probe into the soil to ensure full contact between the probe and the soil. At this time, check whether the position of a single probe changes through the tightness adjustment assembly, and then start the soil temperature and humidity detector to collect the temperature and humidity data of the soil in real time and transmit it to the control display screen; Step 5: Data recording: Record and store the detected data; Step Six: Probe Recovery: Loosen the tightness adjustment component from the probe. At this time, reset the probe, and then clamp the probe through the synchronous stretching component.

[0012] The beneficial effects of the present invention are as follows: (1) It is convenient to protect the probe, prevent the probe from colliding with hard objects and being bent and damaged, and can realize real-time monitoring of the probe position, enabling the operator to adjust according to the actual situation, avoiding repeated detections caused by probe displacement, saving detection time and resources, and ensuring the authenticity and comparability of detection results at the same time; (2) It is convenient to store the probe, prevent the probe from being exposed to the outside and being bent due to the collision of external objects, and can facilitate the synchronous movement of multiple probes, so that the moving positions of multiple probes are consistent, so that the probes can penetrate into the soil simultaneously and maintain the same depth, improving the detection efficiency and reducing the errors and time costs caused by the operation of a single probe; (3) It can firmly fix the probe in the required position, prevent it from loosening or shifting during the detection process, and thus ensure the stability and reliability of the detection data. Description of the Drawings

[0013] Figure 1 It shows a schematic structural diagram of a grassland soil detection device in Embodiment 1; Figure 2 It shows a schematic installation structure diagram of the probe in Embodiment 1; Figure 3 It shows a schematic cooperation structure diagram of the tightness adjustment component and the probe in Embodiment 1; Figure 4 It shows a schematic structural diagram of the tightness adjustment component in Embodiment 1; Figure 5 It shows a schematic structural diagram of the synchronous stretching component in Embodiment 1; Figure 6 It shows a schematic structural diagram of the clamping block in Embodiment 1.

[0014] In the figure: 1, sheath; 2, probe; 3, tightness adjustment component; 31, rotating ring; 32, polygon wheel; 33, rubber pad; 34, manual telescopic rod; 35, gear; 36, inner serrated ring; 37, boss; 38, rectangular rod; 39, connecting rod; 310, roller; 311, rotary encoder; 312, main shaft; 4, synchronous stretching component; 41, fixed ring; 42, clamp block; 43, rotating ring; 44, driving arm; 45, convex column; 46, horizontal rod; 47, clamping block; 5, control display screen. Detailed Embodiments

[0015] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0016] Embodiment 1: The present invention provides a grassland soil detection device, such as Figures 1 to 6 As shown, it includes: a sheath 1, three probes 2 are slidably connected to the bottom end of the inner wall of the sheath 1, a rectangular strip is integrally formed on the outer side of the probe 2, and the rectangular strip is slidably connected to the inside of the sheath 1, a control display screen 5 is embedded and installed on the top of the sheath 1, and a tightness adjustment component 3 is fixedly installed on the middle part of the bottom end of the sheath 1, the tightness adjustment component 3 includes a rotating ring 31 rotatably connected to the inside of the sheath 1, a polygonal wheel 32 for squeezing and fixing the probe 2 is fixedly installed on the top of the rotating ring 31, a boss 37 is rotatably connected to the top of the polygonal wheel 32, and a main shaft 312 with a bearing function is equidistantly rotatably connected to the outer surface of the boss 37, a roller 310 is fixedly connected to the outer side of one end of the main shaft 312, and the roller 310 is fitted to the outer side of the probe 2, a rubber ring is sleeved on the outer side of the roller 310, and the outer side of the rubber ring and the outer surface of the probe 2 are fitted to each other, a rotary encoder 311 is connected to the other end of the main shaft 312, and a synchronous stretching component 4 is arranged at the bottom end of the sheath 1.

[0017] like Figure 3 and Figure 4 As shown, a rubber pad 33 is sleeved on the outer side of the polygonal wheel 32, and anti-skid grooves are equidistantly provided in the middle of the rubber pad 33. The polygonal wheel 32 is a triangular cam, and the maximum radius of the three sides of the polygonal wheel 32 is the same; The polygonal wheel 32 is a triangular cam, and the maximum radius of the three sides is the same. During the rotation process, the contact area and contact mode of each side of the wheel with the probe 2 are consistent, and the force can be evenly transmitted to the probe 2, so that the extrusion of the probe 2 in the soil is more uniform. In addition, the anti-skid grooves equidistantly opened in the middle of the rubber pad 33 increase the friction between the rubber pad 33 and the probe 2, preventing the probe 2 from sliding during the extrusion process, ensuring that the probe 2 can be stably inserted into the soil and maintained at the set position, which is beneficial to improving the accuracy of soil temperature and humidity detection.

[0018] like Figure 3 and Figure 4 As shown, two manual telescopic rods 34 are symmetrically embedded and installed in the middle of the bottom end of the polygonal wheel 32, and the same gear 35 is clamped and installed between the bottom ends of the two manual telescopic rods 34. The bottom end of the gear 35 is integrally formed with a handle, and the outer side of the gear 35 is meshed and connected with an inner serrated ring 36, and the inner serrated ring 36 is fixedly installed inside the sheath 1. The bottom end edge of the inner wall of the inner serrated ring 36 is provided with a fillet, and the top of the outer surface of the gear 35 is provided with an arc corner. The cooperation of the arc corner and the fillet facilitates the clamping connection between the inner serrated ring 36 and the gear 35, thereby reducing the difficulty of clamping between the inner serrated ring 36 and the gear 35. The handle can drive the gear 35 to move. When the gear 35 moves, it drives the manual telescopic rod 34 to stretch, changing the stretching difficulty of the manual telescopic rod 34. Since the gear 35 separates from the internal serrated ring 36 when it moves, then rotate the handle, and the handle drives the polygon wheel 32 to rotate through the gear 35 and the manual telescopic rod 34, changing the rotation difficulty of the polygon wheel 32.

[0019] As Figure 3 and Figure 4 shown, a rectangular rod 38 is slidably connected inside the boss 37 and the rectangular rod 38 is fixedly installed inside the sheath 1. The boss 37 is restricted by the rectangular rod 38 so that the boss 37 cannot rotate. Three connecting rods 39 are equidistantly welded on the outer surface of the boss 37. The main shaft 312 is rotatably connected inside the connecting rod 39, and the rotary encoder 311 is fixedly installed at one end of the connecting rod 39; When the probe 2 is inserted into the soil, at this time the probe 2 contacts the stones or other hard objects inside the soil. At this time, the probe 2 automatically moves due to the obstruction of the hard objects. When the probe 2 automatically moves, it drives the roller 310 to rotate. When the roller 310 rotates, it drives the rotary encoder 311 to operate through the main shaft 312. When the rotary encoder 311 operates, it detects the moving distance of the probe 2, so as to facilitate the personnel to know the displacement phenomenon of the position of the probe 2.

[0020] As Figure 2 , Figure 5 and Figure 6 shown, the synchronous stretching assembly 4 includes a fixing ring 41 vertically movably connected to the bottom end of the sheath 1. The outer side of the fixing ring 41 is snap-connected to the inner wall bottom end of the sheath 1. A clamping block 42 is fixedly installed on the outer surface of the fixing ring 41, and a clamping block 47 is movably connected inside the fixing ring 41; Under the action of the clamping block 47 and the clamping block 42, it is convenient to squeeze the probe 2, so that the probe 2 is squeezed and fixed, changing the squeezing and fixing difficulty of the probe 2.

[0021] As Figure 2 , Figure 5 and Figure 6 shown, the fixing ring 41 is composed of three circles combined. The three circles are fixedly connected by connecting bars. The clamping block 42 is fixedly installed on the outer side of the innermost circle. The clamping block 47 is movably connected between the middle circle and the innermost circle. The inner wall edge of the outermost circle of the fixing ring 41 is threadedly connected with a rotating ring 43. The bottom end of the rotating ring 43 is rotatably connected with a driving arm 44. The middle part of the bottom end of the driving arm 44 is fixedly installed with a convex column 45. The outside of the convex column 45 is vertically movably connected with a horizontal rod 46. The horizontal rod 46 is horizontally movably connected inside the middle circle of the fixing ring 41. One end of the horizontal rod 46 is fixedly connected with one end of the clamping block 47; When the rotating ring 43 rotates and moves, it drives the driving arm 44 to deflect and move. During this process, the angle between the driving arm 44 and the rotating ring 43 changes. The deflection and movement of the driving arm 44 drive the convex column 45 to rotate and move accordingly. The movement of the convex column 45 further drives the horizontal rod 46 to move horizontally inside the middle circle of the fixed ring 41. The movement of the horizontal rod 46 drives the clamping block 47 fixedly connected thereto to move. The movement of the clamping block 47 finally realizes the clamping action on the probe 2, and can firmly fix the probe 2 at the required position to ensure its stability during the detection process.

[0022] The present invention also provides a detection method for a grassland soil detection device, which is applied to the above-mentioned grassland soil detection device and includes the following steps: Step 1: Power on: Power on the soil detection device. Step 2: Pull out the probe: Clamp a plurality of probes 2 through the synchronous stretching assembly 4, then pull the probe 2 to move, and then separate the synchronous stretching assembly 4 from the probe 2 and reset it. Step 3: Fix the probe: Clamp and fix the probe 2 through the tightness adjustment assembly 3. Step 4: Soil detection: Insert the probe 2 into the soil to ensure full contact between the probe 2 and the soil. At this time, detect whether the position of a single probe 2 changes through the tightness adjustment assembly 3, and then start the soil temperature and humidity detector to collect the temperature and humidity data of the soil in real time and transmit it to the control display screen 5. Step 5: Data recording: Record and store the detected data. Step 6: Probe recovery: Loosen the tightness adjustment assembly 3 from the probe 2. At this time, reset the probe 2, and then clamp the probe 2 through the synchronous stretching assembly 4.

[0023] Working principle: During the actual use of the device, when a person rotates the rotating ring 43, when the rotating ring 43 rotates and moves, it drives the driving arm 44 to deflect and move. During this process, the angle between the driving arm 44 and the rotating ring 43 changes. The deflection and movement of the driving arm 44 drive the convex column 45 to rotate and move accordingly. The movement of the convex column 45 further drives the horizontal rod 46 to move horizontally inside the middle circle of the fixed ring 41. The movement of the horizontal rod 46 drives the clamping block 47 fixedly connected thereto to move. The movement of the clamping block 47 finally realizes the clamping action on the probe 2, and can firmly fix the probe 2 at the required position to ensure its stability during the detection process. Next, pull the synchronous stretching component 4. The synchronous stretching component 4 drives multiple probes 2 to move synchronously. When the probes 2 move to the pre-determined positions, at this time, the handle can drive the gear 35 to move. When the gear 35 moves, it separates from the internal serrated ring 36. Then rotate the handle. The handle drives the polygonal wheel 32 to rotate through the gear 35 and the manual telescopic rod 34. When the polygonal wheel 32 rotates, it drives the rotating ring 31 to rotate inside the sheath 1, and at the same time drives the three sides of the polygonal wheel 32 to ensure uniform synchronous pressure on the three probes 2. At the same time, under the action of the rectangular rod 38, the phenomenon that the boss 37 rotates with the rotation of the polygonal wheel 32 cannot occur; Next, reset the synchronous stretching component 4, and then push the sheath 1. The sheath 1 drives the probe 2 to insert into the soil. At this time, due to the extrusion of the rubber pad 33, the probe 2 is not easy to move. The probe 2 contacts the stones or other hard objects inside the soil. At this time, the probe 2 automatically moves due to the obstruction of the hard object. When the probe 2 moves automatically, it drives the roller 310 to rotate. When the roller 310 rotates, it drives the rotary encoder 311 to operate through the main shaft 312. When the rotary encoder 311 operates, it detects the moving distance of the probe 2, so as to facilitate the personnel to know the phenomenon of the displacement of the position of the probe 2 and prevent the inaccurate detection data caused by the inconsistent positions of the multiple probes 2. When it is detected that the position of the probe 2 has changed, at this time, separate the whole device from the soil, then loosen the tightness adjustment component 3 to reset the probe 2, and then repeat the above operations. Finally, insert the probe 2 into the soil along other places. When the probe 2 is inserted into the soil solution, the electrode will generate a corresponding potential difference according to the hydrogen ion concentration in the solution. This potential difference has a certain proportional relationship with the pH value of the solution. By measuring the potential difference and converting it, the pH value of the soil can be obtained. At the same time, when the soil humidity increases, the conductivity of the soil increases and the resistance value decreases. On the contrary, when the soil humidity decreases, the resistance value increases. By detecting the change of the resistance value, the change of the soil humidity can be indirectly obtained. The change of the soil humidity is displayed on the surface of the control display screen 5.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it.

Claims

1. A grassland soil detection device, characterized in that, The invention comprises a sheath (1), wherein three probes (2) are slidably connected to the bottom end of the inner wall of the sheath (1), a control display screen (5) is embedded and installed at the top end of the sheath (1), a tightness adjustment component (3) is fixedly installed at the middle part of the bottom end of the sheath (1), the tightness adjustment component (3) comprises a rotating ring (31) rotatably connected to the inside of the sheath (1), a polygonal wheel (32) for squeezing and fixing the probes (2) is fixedly installed at the top end of the rotating ring (31), a boss (37) is rotatably connected to the top end of the polygonal wheel (32), a main shaft (312) with a bearing function is equidistantly rotatably connected to the outer surface of the boss (37), a roller (310) is fixedly connected to the outer side of one end of the main shaft (312), and the roller (310) is attached to the outer side of the probe (2), and the other end of the main shaft (312) is connected to a rotary encoder (311), and a synchronous stretching component (4) is arranged at the bottom end of the sheath (1).

2. The grassland soil detection device according to claim 1, characterized in that, A rubber pad (33) is sleeved on the outside of the polygonal wheel (32), and anti-slip grooves are equidistantly provided in the middle of the rubber pad (33). The polygonal wheel (32) is a triangular cam, and the maximum radius of the three sides of the polygonal wheel (32) is the same.

3. The grassland soil detection device according to claim 2, wherein Two manual telescopic rods (34) are symmetrically embedded and installed in the middle of the bottom end of the polygonal wheel (32), and a same gear (35) is clamped and installed between the bottom ends of the two manual telescopic rods (34), and a handle is integrally formed at the bottom end of the gear (35).

4. The grassland soil detection device according to claim 3, characterized in that, The outer side of the gear (35) is meshingly connected with an inner sawtooth ring (36), the inner sawtooth ring (36) is fixedly installed inside the sheath (1), the bottom edge of the inner wall of the inner sawtooth ring (36) is provided with a rounded corner, and the top of the outer surface of the gear (35) is provided with an arc corner.

5. The grassland soil detection device according to claim 4, characterized in that, A rectangular rod (38) is slidably connected inside the boss (37), and the rectangular rod (38) is fixedly installed inside the sheath (1). Three connecting rods (39) are welded equidistantly on the outer surface of the boss (37). The main shaft (312) is rotatably connected inside the connecting rod (39), and the rotary encoder (311) is fixedly installed on one end of the connecting rod (39).

6. The grassland soil detection device according to claim 1, characterized in that, The synchronous stretching assembly (4) comprises a fixing ring (41) vertically movably connected to the bottom end of the sheath (1), a clamping block (42) is fixedly mounted on the outer surface of the fixing ring (41), and a clamping block (47) is movably connected inside the fixing ring (41).

7. The grassland soil detection device according to claim 6, characterized in that, The fixing ring (41) is composed of three circles, the three circles are fixedly connected by connecting strips, the clamping block (42) is fixedly mounted on the outside of the innermost circle, and the clamping block (47) is movably connected between the middle circle and the innermost circle.

8. The grassland soil detection device according to claim 7, characterized in that, The outermost inner wall edge of the fixed ring (41) is threadedly connected with a rotating ring (43). The bottom end of the rotating ring (43) is rotatably connected with a driving arm (44). The middle part of the bottom end of the driving arm (44) is fixedly installed with a convex column (45). The outside of the convex column (45) is vertically movably connected with a horizontal rod (46). The horizontal rod (46) is horizontally movably connected inside the middle circle of the fixed ring (41). One end of the horizontal rod (46) is fixedly connected to one end of a clamping block (47).

9. A detection method for the grassland soil detection device according to claim 8, characterized in that It includes the following steps: Step 1, power on: Power on the soil detection device; Step 2, pull out the probe: Clamp a plurality of probes (2) through the synchronous stretching assembly (4), then pull the probe (2) to move, and then separate the synchronous stretching assembly (4) from the probe (2) and reset it; Step 3, fix the probe: Clamp and fix the probe (2) through the tightness adjustment assembly (3); Step 4, soil detection: Insert the probe (2) into the soil to ensure that the probe (2) is in full contact with the soil. At this time, check whether the position of a single probe (2) changes through the tightness adjustment assembly (3), and then start the soil temperature and humidity detector to collect the temperature and humidity data of the soil in real time and transmit it to the control display screen (5); Step 5, data recording: Record and store the detected data; Step 6, probe recovery: Loosen the tightness adjustment assembly (3) from the probe (2). At this time, reset the probe (2), and then clamp the probe (2) through the synchronous stretching assembly (4).

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