Agricultural remote automatic sampling device based on Internet of Things

Abstract

The invention relates to the technical field of agricultural soil sampling, and particularly discloses an agricultural remote automatic sampling device based on the Internet of Things, the agricultural remote automatic sampling device comprises a base, the base is provided with a sampling mechanism, a crawler belt moving unit, a cleaning mechanism, a transferring mechanism and a control unit, and the top of the base is fixedly connected with a shell, a limiting cylinder, a soil analyzer and a storage battery; soil sampled by the sampling mechanism is collected, the transferring mechanism circularly moves between the lower side of the soil analyzer and the lower side of the cleaning mechanism, then the effects of automatically detecting samples and automatically cleaning the soil are achieved, sampling of the samples at different depths and positions is achieved, the cleaning mechanism is arranged, and the sampling accuracy is improved. The soil residues in the sampling cup can be automatically removed, the residues on the inner wall of the sampling cup can be effectively cleaned, and the possible interference of the residues in the subsequent detection process is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural soil sampling, and in particular to an agricultural remote automatic sampling device based on the Internet of Things. Background Art

[0002] The quality of soil is related to the growth of agricultural products. Agricultural soil sampling is an important task in soil science, agricultural science research and farmland environmental monitoring. It involves many aspects such as sampling time, sampling depth, sampling method and post-sampling sample processing. Sampling can be done at different growth stages or according to the research purpose to obtain data on soil property changes at different growth stages.

[0003] The Chinese invention patent with the publication number CN113776881A discloses a sampling device for soil detection in an agricultural environment, including a frame, a drilling mechanism, a lifting platform that can be lifted and installed on the frame, and a sampling mechanism, the drilling mechanism includes a drilling platform installed on the frame and a hollow drill pipe threaded on the drilling platform, the lower end of the hollow drill pipe passes through the drilling platform and a sampling opening is provided in the center, the lifting platform is slidably plugged with a guide column and is rotatably connected with the hollow drill pipe, the lifting platform is provided with a drilling motor that drives the hollow drill pipe to rotate, the sampling mechanism includes a sampling cup array, an electric cylinder, an electric telescopic pressure rod, a sampling bracket and a cup mechanism, the sampling cup array is installed on the sampling bracket, the upper end of the sampling bracket is connected to the telescopic rod end of the electric cylinder, and the cup mouth of the lowest sampling cup is connected to the sampling opening when sampling. The present invention takes into account the convenience of sampling and the intact structure of the soil during the sampling process when collecting soil samples at multiple depths.

[0004] Collecting soil samples is the first step in soil testing. There are many types of samplers, including manual, automatic, different sampling depths, and pollution avoidance options to ensure that the collected samples are representative. However, the existing sampling methods are generally manual sampling. In agricultural production, the planting range is large, and the planting products in different regions are different, resulting in different soil environments in different regions. Using traditional tools for manual sampling requires a long time to complete the entire sampling process. After sampling, the soil remains in the sampling cup, and the residue in the sampling cup will affect the accuracy of the next test. The sampling cup needs to be cleaned, and only a single sample can be taken. The representativeness of a single sample is insufficient. Random errors in the detection process will lead to result deviations. Multiple tests are inefficient and time-consuming and labor-intensive. For this reason, we propose an agricultural remote automatic sampling device based on the Internet of Things. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an agricultural remote automatic sampling device based on the Internet of Things to solve the problems existing in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An agricultural remote automatic sampling device based on the Internet of Things comprises a base, on which a sampling mechanism, a crawler moving unit, a cleaning mechanism, a transfer mechanism and a control unit are arranged, a housing, a limiting cylinder, a soil analyzer and a battery are fixedly connected to the top of the base, a navigation unit is arranged on the top of the housing, and the sampling mechanism, the crawler moving unit, the cleaning mechanism, the transfer mechanism, the soil analyzer, the battery and the navigation unit are all connected to the control unit by telecommunication;

[0008] The sampling mechanism includes a support frame, a mounting plate, a sleeve, a spiral sampler, a lifting assembly and a driving assembly. The support frame is fixedly connected to the top of the base, a cross plate is fixedly connected between the inner walls of the support frame, a straight rod is fixedly connected between the cross plate and the upper inner wall of the support frame, the mounting plate is slidably connected to the surface of the straight rod, the sleeve slides through the limiting cylinder, and the spiral sampler is rotatably connected in the sleeve.

[0009] Furthermore, the lifting assembly includes a ball screw, a first motor and a screw sleeve, the ball screw is rotatably connected between the cross plate and the upper inner wall of the support frame, the first motor is fixedly connected to the bottom of the cross plate, the output end of the first motor is fixedly connected to the ball screw, the screw sleeve is fixedly connected to the top of the mounting plate, and the screw sleeve is threadedly connected to the circumferential surface of the ball screw.

[0010] Further, the lifting assembly includes a ball screw, a first motor and a screw sleeve, the ball screw is rotatably connected between the cross plate and the upper inner wall of the support frame, the first motor is fixedly connected to the bottom of the cross plate, the output end of the first motor is fixedly connected to the ball screw, the screw sleeve is fixedly connected to the top of the mounting plate, and the screw sleeve is threadedly connected to the circumferential surface of the ball screw;

[0011] Furthermore, the driving assembly includes a first bevel gear, a second motor and a second bevel gear, the first bevel gear is fixedly connected to the upper end of the spiral sampler, the first bevel gear is located on the upper side of the mounting plate, the second motor is fixedly connected to the top of the mounting plate, and the second bevel gear is fixedly connected to the output end of the second motor.

[0012] Furthermore, the transfer mechanism includes a fourth motor, an extension arm and a sampling cup, the fourth motor is fixedly connected to the top of the base, the extension arm is located on the lower side of the base, one end of the extension arm is fixedly connected to the output end of the fourth motor, and the sampling cup is fixedly connected to the other end of the extension arm.

[0013] Furthermore, the transfer mechanism also includes a sleeve, a short shaft, a pinion, a cup bottom and an arc-shaped rack, wherein the sleeve is fixedly connected to the circumferential surface of the sampling cup, the short shaft is rotatably connected in the sleeve, the pinion is fixedly connected to the upper end of the short shaft, the cup bottom is fixedly connected to the lower end of the short shaft, the cup bottom fits the bottom of the sampling cup, the arc-shaped rack is fixedly connected to the bottom of the base, and the pinion is meshed with the arc-shaped rack.

[0014] Furthermore, the cleaning mechanism includes a positioning plate, a limiting rod, a slide plate, a third motor, a cleaning brush and a dustproof shell, the positioning plate is fixedly connected to the top of the base, the limiting rod is fixedly connected to the four corners of the positioning plate, the slide plate is slidably connected between the four limiting rods, the third motor is fixedly connected to the top of the slide plate, the dustproof shell is fixedly connected to the top of the positioning plate, the cleaning brush is located in the dustproof shell, and the output end of the third motor is fixedly connected to the cleaning brush.

[0015] Furthermore, the cleaning mechanism also includes a top plate and an electric push rod, the top plate is fixedly connected to the upper ends of four limit rods, the electric push rod is fixedly connected to the top of the top plate, and the extended end of the electric push rod is fixedly connected to the slide plate.

[0016] Furthermore, the sampling mechanism and the cleaning mechanism are both arranged on the upper side of the base, the sampling mechanism passes through the limiting cylinder to perform soil sampling, the soil analyzer is fixedly connected to the top of the base, the transfer mechanism is arranged on the lower side of the base, the control unit includes a controller and a signal transceiver, and the crawler moving unit is installed on both sides of the base.

[0017] Technical effects and advantages of the present invention:

[0018] 1. The present invention is provided with a sampling mechanism, wherein the driving component can control the rotation speed of the spiral sampler. The soil textures in different areas are different. A faster rotation speed can be used for relatively dry and hard soils, and a slower rotation speed can be used for relatively wet and soft soils. The rotation speed can be adjusted according to the actual soil conditions. In addition, the lifting component can control the drilling depth of the spiral sampler to obtain soil at a deeper position. By controlling the rotation speed and insertion depth of the spiral sampler, the traditional sampling structure is optimized, which is conducive to sampling samples at different depths and positions.

[0019] 2. It is equipped with a cleaning mechanism that can automatically remove soil residues in the sampling cup and effectively clean the residues on the inner wall of the sampling cup to prevent these residues from interfering with the subsequent detection process and affecting the accuracy of the test results. By cleaning the residues, this potential interference factor can be eliminated to ensure the accuracy of the test results.

[0020] 3. The present invention is provided with a transfer mechanism to control the cyclic movement of the sampling cup. The sampling cup can be cleaned and reused, which is conducive to multiple sampling and testing. Multiple sampling can reduce the impact of accidental errors by testing multiple samples. Single sampling may cause result deviation due to insufficient representativeness of the sample or random errors in the testing process. Multiple sampling can reduce this deviation by averaging or comprehensive analysis of multiple samples, thereby improving the accuracy and reliability of the results. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the present invention after the housing is opened;

[0024] Figure 4 It is a schematic diagram of the structure of the bottom plate of the present invention;

[0025] Figure 5 It is a cross-sectional structural schematic diagram of the present invention;

[0026] Figure 6 It is a schematic diagram of the sampling mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the cleaning mechanism structure of the present invention;

[0028] Figure 8 For the present invention Figure 8 Schematic diagram of the explosion structure;

[0029] Fig. 9 It is a schematic diagram of the transfer mechanism of the present invention;

[0030] Fig.10 For the present invention Fig.10 Schematic diagram of the separation structure of the middle cup bottom.

[0031] Figure: 1. Base; 101. Limiting cylinder; 2. Shell; 3. Track moving unit; 4. Sampling mechanism; 401. Support frame; 402. Horizontal plate; 403. Ball screw; 404. First motor; 405. Mounting plate; 406. Screw sleeve; 407. Straight rod; 408. Sleeve; 409. Spiral sampler; 4010. First bevel gear; 4011. Second motor; 4012. Second bevel gear; 5. Soil analyzer; 6. Cleaning mechanism ; 601, positioning plate; 602, limiting rod; 603, top plate; 604, slide plate; 605, electric push rod; 606, third motor; 607, cleaning brush; 608, dust cover; 7, transfer mechanism; 701, fourth motor; 702, extension arm; 703, sampling cup; 704, bushing; 705, short shaft; 706, pinion; 707, cup bottom; 708, arc rack; 8, battery; 9, control unit; 10, navigation unit. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The agricultural remote automatic sampling device based on the Internet of Things involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0033] Reference Figure 1-10 The present invention provides an agricultural remote automatic sampling device based on the Internet of Things, comprising a base 1, on which a sampling mechanism 4, a crawler moving unit 3, a cleaning mechanism 6, a transfer mechanism 7 and a control unit 9 are arranged, a housing 2, a limiting cylinder 101, a soil analyzer 5 and a battery 8 are fixedly connected to the top of the base 1, a navigation unit 10 is arranged on the top of the housing 2, and the sampling mechanism 4, the crawler moving unit 3, the cleaning mechanism 6, the transfer mechanism 7, the soil analyzer 5, the battery 8 and the navigation unit 10 are all connected to the control unit 9 by telecommunication;

[0034] In this embodiment, it is necessary to specifically explain that: the base 1 is a chassis structure commonly used in agriculture, and a circular groove corresponding to the limit cylinder 101, the soil analyzer 5 and the cleaning mechanism 6 is opened at the bottom of the base 1. The sampling mechanism 4 is used for agricultural soil sampling. The sleeve 408 is controlled to move downward by the lifting component, which can drive the spiral sampler 409 to move downward, and then the spiral sampler 409 is controlled to rotate by the driving component. The spiral sampler 409 is used to obtain soil by rotating. During the sampling process, the sampler is inserted into the soil to be sampled, and the spiral sampler 409 transports the soil upward to the collection part of the sleeve 408. The driving component can control the rotation speed of the spiral sampler 409. The soil texture in different areas is different. A faster rotation speed can be used for dry and hard soil, and a slower rotation speed can be used for soft soil. It can be adjusted according to the actual soil conditions. The lifting component can control the drilling depth of the spiral sampler 409 to obtain soil at a deeper position. By controlling the rotation speed and insertion depth of the spiral sampler 409, the traditional sampling structure is optimized, and samples at different depths and positions can be sampled. The soil analyzer 5 is a detection device used in agriculture, which can detect the sampled samples;

[0035] The main difference between the present embodiment and the prior art is that the present embodiment adopts, specifically, the present scheme designs a cleaning mechanism 6 and a transfer mechanism 7, and drives the sampling cup 703 to rotate through the output end of the fourth motor 701. When the sampling cup 703 moves to the lower side of the limiting cylinder 101, the sample in the sleeve 408 can be collected, and part of the sample falls into the sampling cup 703. Then the sampling cup 703 is moved to the lower side of the soil analyzer 5 again, and the sample is tested by the soil analyzer 5. After the test, the sample is moved to the lower side of the cleaning mechanism 6. Under the meshing action of the pinion 706 and the arc-shaped rack 708, the cup bottom 707 is in an open state, and most of the soil in the sampling cup 703 is automatically discharged, but a small amount of soil adheres to the inner wall of the sampling cup 703. At this time, the cleaning brush 607 is located on the upper side of the sampling cup 703, and the electric push rod 605 controls the cleaning brush 607 to move in the sampling cup 70 3 moves up and down, and controls the third motor 606 to drive the cleaning brush 607 to rotate at a high speed, which can automatically remove the soil residue in the sampling cup 703, and can effectively clean the residue on the inner wall of the sampling cup 703, so as to avoid the interference of these residues in the subsequent detection process, which may affect the accuracy of the detection result. By cleaning the residue, this potential interference factor can be eliminated to ensure the accuracy of the detection result. The cleaned sampling cup 703 can be moved to the lower side of the limiting cylinder 101 again under the drive of the fourth motor 701, and the cup bottom 707 returns to its original position due to the engagement of the pinion 706 with the arc-shaped rack 708, so that multiple sampling and detection are realized without manual cleaning. Compared with the existing sampling method, the automatic sampling greatly improves the work efficiency, can be adapted to a large range of agricultural gardens, and can be used in a variety of planting areas. It has a wide range of applications and can be repeatedly tested to ensure the growth environment of agricultural products.

[0036] The above structure is the main structure of this embodiment, which solves the problem of low sampling efficiency. The soil analyzer 5 is an existing structure. The specific detection of samples by the soil analyzer 5 belongs to the existing technology. Therefore, this application does not make detailed limitations.

[0037] Reference Figure 5-6The sampling mechanism 4 includes a support frame 401, a mounting plate 405, a sleeve 408, a spiral sampler 409, a lifting assembly and a driving assembly. The support frame 401 is fixedly connected to the top of the base 1, a horizontal plate 402 is fixedly connected between the inner walls of the support frame 401, a straight rod 407 is fixedly connected between the horizontal plate 402 and the upper inner wall of the support frame 401, the mounting plate 405 is slidably connected to the surface of the straight rod 407, the sleeve 408 slides through the limit cylinder 101, and the spiral sampler 409 is rotatably connected in the sleeve 408; the lifting assembly includes a ball screw 403, a first motor 404 and a screw sleeve 406, and the ball screw 403 is rotatably connected to the horizontal plate 402 and the upper of the support frame 401 Between the inner walls, the first motor 404 is fixedly connected to the bottom of the cross plate 402, the output end of the first motor 404 is fixedly connected to the ball screw 403, the screw sleeve 406 is fixedly connected to the top of the mounting plate 405, and the screw sleeve 406 is threadedly connected to the circumferential surface of the ball screw 403; the driving assembly includes a first bevel gear 4010, a second motor 4011 and a second bevel gear 4012, the first bevel gear 4010 is fixedly connected to the upper end of the spiral sampler 409, the first bevel gear 4010 is located on the upper side of the mounting plate 405, the second motor 4011 is fixedly connected to the top of the mounting plate 405, and the second bevel gear 4012 is fixedly connected to the output end of the second motor 4011.

[0038] In this embodiment, it is necessary to specifically explain that: the limiting cylinder 101 is used to limit the linear sliding of the sleeve 408 up and down, the spiral sampler 409 is located inside the sleeve 408, and the straight rod 407 passes through the mounting plate 405 to limit the linear movement of the mounting plate 405 up and down. When in use, the ball screw 403 is driven to rotate by the output end of the first motor 404, and the ball screw 403 drives the mounting plate 405 to rise and fall, and the mounting plate 405 drives the sleeve 408 and the spiral sampler 409 to rise and fall synchronously to flexibly control the height of the sleeve 408. The second motor 4011 is used to drive the spiral sampler 409 to rotate, and the second bevel gear 4012 is driven to rotate by the output end of the second motor 4011. The second bevel gear 4012 drives the first bevel gear 4010 to rotate, and then drives the spiral sampler 409 to rotate. When sampling, the sleeve 40 is controlled 8 moves downward and controls the spiral sampler 409 to rotate, so that the sleeve 408 and the spiral sampler 409 drill into the soil. Under the collection action of the spiral sampler 409, the soil sample enters the sleeve 408. After collection, the sleeve 408 is controlled to move upward back to its original position. The sample is temporarily stored inside the sleeve 408. The driving component can control the rotation speed of the spiral sampler 409. The soil texture in different areas is different. A faster rotation speed can be used for a relatively dry and hard soil, and a slower rotation speed can be used for a relatively wet and soft soil. It can be adjusted according to the actual soil conditions, and the lifting component can control the drilling depth of the spiral sampler 409 to obtain soil at a deeper position. By controlling the rotation speed and insertion depth of the spiral sampler 409, the traditional sampling structure is optimized, and sampling of samples at different depths and positions can be achieved.

[0039] Reference Figure 9-10 The transfer mechanism 7 includes a fourth motor 701, an extension arm 702 and a sampling cup 703. The fourth motor 701 is fixedly connected to the top of the base 1, the extension arm 702 is located on the lower side of the base 1, one end of the extension arm 702 is fixedly connected to the output end of the fourth motor 701, and the sampling cup 703 is fixedly connected to the other end of the extension arm 702; the transfer mechanism 7 also includes a sleeve 704, a short shaft 705, a pinion 706, a cup bottom 707 and an arc-shaped rack 708. The sleeve 704 is fixedly connected to the circumferential surface of the sampling cup 703, the short shaft 705 is rotatably connected in the sleeve 704, the pinion 706 is fixedly connected to the upper end of the short shaft 705, the cup bottom 707 is fixedly connected to the lower end of the short shaft 705, the cup bottom 707 fits the bottom of the sampling cup 703, the arc-shaped rack 708 is fixedly connected to the bottom of the base 1, and the pinion 706 is meshed with the arc-shaped rack 708.

[0040] In this embodiment, it is necessary to specifically explain that: the sampling cup 703 is used to transfer samples, the fourth motor 701 is used to rotate and control the sampling cup 703, and the extension arm 702 is driven to rotate by the output end of the fourth motor 701, and the extension arm 702 can drive the sampling cup 703 to move in a circular manner. The limiting cylinder 101, the soil analyzer 5 and the cleaning mechanism 6 are all arranged on the upper side of the moving track of the sampling cup 703. When in use, the sampling cup 703 is first moved to the lower side of the limiting cylinder 101, and at this time, the spiral sampler 409 is controlled to rotate in the opposite direction, and the sleeve The sample in 408 falls into the sampling cup 703, and then the sampling cup 703 is moved to the lower side of the soil analyzer 5, and the sample is tested by the soil analyzer 5. After the test, it moves to the lower side of the cleaning mechanism 6, and the inner wall of the sampling cup 703 is cleaned by the transfer mechanism 7 to prepare for the next use. Compared with the existing sampling that can only be used once, multiple sampling can reduce the impact of accidental errors by testing multiple samples. Single sampling may cause result deviation due to insufficient representativeness of the sample or random errors in the detection process. Multiple sampling can reduce this deviation by averaging or comprehensive analysis of multiple samples, thereby improving the accuracy and reliability of the results.

[0041] Reference Figure 7-8 The cleaning mechanism 6 includes a positioning plate 601, a limiting rod 602, a slide plate 604, a third motor 606, a cleaning brush 607 and a dustproof shell 608. The positioning plate 601 is fixedly connected to the top of the base 1, the limiting rod 602 is fixedly connected to the four corners of the positioning plate 601, the slide plate 604 is slidably connected between the four limiting rods 602, the third motor 606 is fixedly connected to the top of the slide plate 604, the dustproof shell 608 is fixedly connected to the top of the positioning plate 601, the cleaning brush 607 is located in the dustproof shell 608, and the output end of the third motor 606 is fixedly connected to the cleaning brush 607; the cleaning mechanism 6 also includes a top plate 603 and an electric push rod 605, the top plate 603 is fixedly connected to the upper ends of the four limiting rods 602, the electric push rod 605 is fixedly connected to the top of the top plate 603, and the extended end of the electric push rod 605 is fixedly connected to the slide plate 604.

[0042] In this embodiment, it is necessary to specifically explain that: the positioning plate 601, the limiting rod 602 and the top plate 603 are an integral structure, the cleaning brush 607 is located in the dustproof shell 608, and the cleaning brush 607 can be driven to rotate at a high speed by the output end of the third motor 606. The slide plate 604 can be lifted and lowered in a straight line under the restriction of the limiting rod 602. When working, when the sampling cup 703 moves to the lower side of the dustproof shell 608, the extended end of the electric push rod 605 is controlled to push the slide plate 604 to move downward, and finally drives the cleaning brush 607 to move downward, and the cleaning brush 607 enters the sampling cup 703, and then the cleaning brush 607 is driven to rotate at a high speed by the third motor 606, which can effectively clean the residues on the inner wall of the sampling cup 703, so as to avoid the residues from interfering with the subsequent detection process and affecting the accuracy of the detection results. By cleaning the residues, this potential interference factor can be eliminated to ensure the accuracy of the detection results.

[0043] Preferably, the design of the dustproof shell 608 can prevent the residues cleaned by the cleaning brush 607 from entering the outer shell 2, thereby playing a dust-proof role. In addition, a spraying and drying device can be installed on the dustproof shell 608 to clean the cleaning brush 607, thereby ensuring that the cleaning brush 607 can be reused, preventing residual samples on the cleaning brush 607 from affecting the next detection, and improving the accuracy of the detection structure.

[0044] Reference Figure 4 A control unit 9 is arranged on the top of the base 1, and the control unit 9 includes a controller and a signal receiver. Tracked moving units 3 are arranged on both sides of the base 1. A battery 8 is fixedly connected to the top of the base 1. A shell 2 is fixedly connected to the top of the base 1. The soil analyzer 5, the battery 8 and the control unit 9 are all located in the shell 2. A navigation unit 10 is arranged on the top of the shell 2.

[0045] In this embodiment, it is necessary to specifically explain that: the control unit 9 has a controller and a signal transceiver, the controller is used to control the use of the crawler mobile unit 3, the sampling mechanism 4, the soil analyzer 5, the cleaning mechanism 6 and the transfer mechanism 7, the signal transceiver can be connected to the network or Bluetooth of the agricultural garden, so that the user can control the device remotely, which is convenient for users to use, the crawler mobile unit 3 is arranged on both sides of the base 1, and is used to assist the base 1 to move in the agricultural garden, the crawler structure can be applied to a variety of different geographical environments, the outer shell 2 has a sealed structure, which can protect the internal structure and play a role in dust and water proofing, and a navigation unit 10 is installed on the top of the outer shell 2. The navigation unit 10 is an existing navigation technology, equipped with a camera, GPS and other parts, which assists the base 1 to move more safely in the garden.

[0046] The main problem solved by this embodiment is: by controlling the lifting and rotation of the spiral sampler 409, automatic sampling is achieved, work efficiency is improved, and the problem of low efficiency of manual sampling is solved. The sampling cup 703 is used to automatically transfer samples and automatically clean up internal residues. By cleaning up the residues, this potential interference factor can be eliminated to ensure the accuracy of the test results, so as to perform multiple sampling operations. Multiple sampling can reduce the impact of accidental errors by testing multiple samples, and at the same time solves the problem that a single sampling may cause result deviation due to insufficient representativeness of the sample or random errors in the detection process.

[0047] An agricultural remote automatic sampling method based on the Internet of Things, the specific steps are as follows:

[0048] Step 1: Take out the sample, control the sleeve 408 to move downward through the lifting component, which can drive the spiral sampler 409 to move downward, and then control the spiral sampler 409 to rotate through the driving component, and obtain the soil by rotating the spiral sampler 409. During the sampling process, the sampler is inserted into the soil to be sampled, and the spiral sampler 409 rotates and transports the soil upward to the collection part of the sleeve 408. The driving component can control the rotation speed of the spiral sampler 409, which can be adjusted according to the actual soil conditions, and the lifting component can control the drilling depth of the spiral sampler 409 to obtain soil at a deeper position. By controlling the rotation speed and insertion depth of the spiral sampler 409, it is possible to sample samples at different depths and positions. The samples are temporarily stored in the sleeve 408, and the sleeve 408 is controlled to return to its original position upward at this time;

[0049] Step 2: Analyze the sample, and then drive the sampling cup 703 to rotate through the output end of the fourth motor 701. When the sampling cup 703 moves to the lower side of the limiting cylinder 101, the spiral sampler 409 is controlled to rotate in the opposite direction, and the sample in the sleeve 408 falls into the sampling cup 703. The sampling cup 703 is used to automatically collect the sample in the sleeve 408, and then the sampling cup 703 is moved again to the lower side of the soil analyzer 5, and the soil analyzer 5 is used to detect the sample;

[0050] Step 3: Clean the residue. After the detection, move the sampling cup 703 to the lower side of the cleaning mechanism 6, and align the sampling cup 703 with the lower side of the cleaning brush 607. Under the meshing action of the pinion 706 and the arc-shaped rack 708, the cup bottom 707 is in an open state at this time, and most of the soil in the sampling cup 703 is automatically discharged, but a small amount of soil adheres to the inner wall of the sampling cup 703. At this time, the cleaning brush 607 is located on the upper side of the sampling cup 703. The electric push rod 605 controls the cleaning brush 607 to move up and down on the sampling cup 703, and controls the third motor 606 to drive the cleaning brush 607 to rotate at a high speed, which can automatically remove the soil residue in the sampling cup 703, ensuring that the previous sample will not affect the next detection result. The cleaned sampling cup 703 can be moved to the lower side of the limiting cylinder 101 again under the drive of the fourth motor 701, and the cup bottom 707 returns to its original position due to the meshing of the pinion 706 and the arc-shaped rack 708.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An agricultural remote automatic sampling device based on the Internet of Things, comprising a base (1), Features: The base (1) is provided with a sampling mechanism (4), a crawler moving unit (3), a cleaning mechanism (6), a transfer mechanism (7) and a control unit (9); the top of the base (1) is fixedly connected with a housing (2), a limiting cylinder (101), a soil analyzer (5) and a battery (8); the top of the housing (2) is provided with a navigation unit (10); the sampling mechanism (4), the crawler moving unit (3), the cleaning mechanism (6), the transfer mechanism (7), the soil analyzer (5), the battery (8) and the navigation unit (10) are all connected to the control unit (9) in a telecommunication manner; The sampling mechanism (4) comprises a support frame (401), a mounting plate (405), a sleeve (408), a spiral sampler (409), a lifting assembly and a driving assembly. The support frame (401) is fixedly connected to the top of the base (1); a transverse plate (402) is fixedly connected between the inner walls of the support frame (401); a straight rod (407) is fixedly connected between the transverse plate (402) and the upper inner wall of the support frame (401); the mounting plate (405) is slidably connected to the surface of the straight rod (407); the sleeve (408) slides through the limiting cylinder (101); and the spiral sampler (409) is rotatably connected inside the sleeve (408).

2. According to claim 1, an agricultural remote automatic sampling device based on the Internet of Things, Features: The lifting assembly comprises a ball screw (403), a first motor (404) and a screw sleeve (406); the ball screw (403) is rotatably connected between the transverse plate (402) and the upper inner wall of the support frame (401); the first motor (404) is fixedly connected to the bottom of the transverse plate (402); the output end of the first motor (404) is fixedly connected to the ball screw (403); the screw sleeve (406) is fixedly connected to the top of the mounting plate (405); and the screw sleeve (406) is threadedly connected to the circumferential surface of the ball screw (403).

3. According to claim 2, an agricultural remote automatic sampling device based on the Internet of Things, Features: The driving assembly comprises a first bevel gear (4010), a second motor (4011) and a second bevel gear (4012), wherein the first bevel gear (4010) is fixedly connected to the upper end of the spiral sampler (409), the first bevel gear (4010) is located on the upper side of the mounting plate (405), the second motor (4011) is fixedly connected to the top of the mounting plate (405), and the second bevel gear (4012) is fixedly connected to the output end of the second motor (4011).

4. The agricultural remote automatic sampling device based on the Internet of Things according to claim 1, Features: The transfer mechanism (7) comprises a fourth motor (701), an extension arm (702) and a sampling cup (703); the fourth motor (701) is fixedly connected to the top of the base (1); the extension arm (702) is located at the lower side of the base (1); one end of the extension arm (702) is fixedly connected to the output end of the fourth motor (701); and the sampling cup (703) is fixedly connected to the other end of the extension arm (702).

5. The agricultural remote automatic sampling device based on the Internet of Things according to claim 4, Features: The transfer mechanism (7) further comprises a shaft sleeve (704), a short shaft (705), a pinion (706), a cup bottom (707) and an arc-shaped rack (708); the shaft sleeve (704) is fixedly connected to the circumferential surface of the sampling cup (703); the short shaft (705) is rotatably connected in the shaft sleeve (704); the pinion (706) is fixedly connected to the upper end of the short shaft (705); the cup bottom (707) is fixedly connected to the lower end of the short shaft (705); the cup bottom (707) fits the bottom of the sampling cup (703); the arc-shaped rack (708) is fixedly connected to the bottom of the base (1); and the pinion (706) meshes with the arc-shaped rack (708).

6. The agricultural remote automatic sampling device based on the Internet of Things according to claim 1, Features: The cleaning mechanism (6) comprises a positioning plate (601), a limiting rod (602), a slide plate (604), a third motor (606), a cleaning brush (607) and a dustproof shell (608); the positioning plate (601) is fixedly connected to the top of the base (1); the limiting rod (602) is fixedly connected to the four corners of the positioning plate (601); the slide plate (604) is slidably connected between the four limiting rods (602); the third motor (606) is fixedly connected to the top of the slide plate (604); the dustproof shell (608) is fixedly connected to the top of the positioning plate (601); the cleaning brush (607) is located in the dustproof shell (608); and the output end of the third motor (606) is fixedly connected to the cleaning brush (607).

7. The agricultural remote automatic sampling device based on the Internet of Things according to claim 6, Features: The cleaning mechanism (6) further comprises a top plate (603) and an electric push rod (605), wherein the top plate (603) is fixedly connected to the upper ends of the four limit rods (602), the electric push rod (605) is fixedly connected to the top of the top plate (603), and the extended end of the electric push rod (605) is fixedly connected to the slide plate (604).

8. The agricultural remote automatic sampling device based on the Internet of Things according to claim 1, Features: The sampling mechanism (4) and the cleaning mechanism (6) are both arranged on the upper side of the base (1); the sampling mechanism (4) passes through a limiting cylinder (101) to perform soil sampling; the soil analyzer (5) is fixedly connected to the top of the base (1); the transfer mechanism (7) is arranged on the lower side of the base (1); the control unit (9) comprises a controller and a signal transceiver; and the crawler moving unit (3) is installed on both sides of the base (1).

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