Natural resource intelligent monitoring device

Abstract

The application relates to the field of natural resource monitoring, and discloses a natural resource intelligent monitoring device, which comprises a cabin body, a movable cover is installed at the bottom of the cabin body, an intermediate cover is slidably connected to the outer periphery of one end of the movable cover away from the cabin body, a base is fixed to one side of the intermediate cover away from the cabin body, a soil sensor is installed in the base, a plurality of supporting assemblies are arranged on the outer periphery of the base, a protection assembly is arranged on the left and right sides of the cabin body, two wind direction sensors are installed on the front side of the cabin body, a top cover is movably connected to the rear side of the cabin body, an energy source assembly is slidably connected to the inside of the cabin body, and a driving assembly is arranged in the cabin body. The energy source assembly prolongs the endurance time of the equipment. The solar panels adjust the angles through electric movable blocks, keep the best orientation, maximize the collection of solar energy, and ensure that the equipment continuously works for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of natural resource monitoring, and in particular to a natural resource intelligent monitoring device. Background Art

[0002] Natural resource monitoring is a critical activity encompassing multiple areas, including atmosphere and climate, water resources, land and ecology, forests and vegetation, minerals and energy, and marine and coastal resources. With the intensification of global environmental challenges and the growing demand for resource management, resource monitoring using modern technologies has become crucial for promoting sustainable development. However, many current natural resource monitoring devices still suffer from technical deficiencies, hindering their application in various environments.

[0003] Traditional soil parameter monitoring methods typically use embedded sensors that transmit data to ground-based equipment via wired connections. While this approach provides relatively stable data, it presents challenges such as complex wiring, sensor susceptibility to soil corrosion, and low data acquisition frequency. Due to the sensors' prolonged exposure to the soil, moisture, salt, and other chemicals can degrade or damage their performance, affecting the accuracy of the monitoring data. Furthermore, soil-embedded sensors often require complex wiring systems to transmit data to ground-based equipment, which increases deployment complexity and maintenance costs.

[0004] On the other hand, existing natural resource monitoring devices often rely on a single power source, typically batteries or external power supplies, which poses a serious challenge in applications in extreme or remote areas. In environments lacking a stable power supply, traditional equipment is prone to power outages, resulting in interruptions in monitoring data and affecting the continuity and accuracy of data collection. Therefore, adopting more flexible and efficient energy solutions, especially self-sufficient energy systems, is key to solving this problem.

[0005] Furthermore, traditional natural resource monitoring equipment generally adopts a monolithic design, making it bulky and cumbersome to transport and install. This makes deployment inefficient and costly, especially in complex terrain. In some cases, it can even prevent the equipment from reaching specific monitoring areas. With the increasing demand for environmental protection and ecological monitoring, improving the convenience and deployability of monitoring equipment has become an urgent issue.

[0006] To this end, the present invention proposes a natural resource intelligent monitoring device to address the deficiencies of the prior art. Summary of the Invention

[0007] In view of the deficiencies of the prior art, the natural resource intelligent monitoring device is provided to solve the problems of the soil sensor being easily corroded, complex wiring, single energy supply, difficult equipment deployment and maintenance, and the like in the prior art, and to limit the accuracy and continuity of monitoring.

[0008] To achieve the above object, the natural resource intelligent monitoring device is implemented by the following technical scheme: a natural resource intelligent monitoring device, comprising a cabin body, a movable cover is installed at the bottom of the cabin body, an intermediate cover is slidably connected to the outer periphery of the end of the movable cover away from the cabin body, a base is fixed to the side of the intermediate cover away from the cabin body, a soil sensor is installed inside the base, a plurality of support assemblies are arranged on the outer periphery of the base, a protection assembly is arranged on the left and right sides of the cabin body, two wind direction sensors are installed on the front side of the cabin body, a top cover is movably connected to the rear side of the cabin body, an energy assembly is slidably connected inside the cabin body, and a driving assembly is arranged inside the cabin body.

[0009] The energy assembly comprises a bottom plate, the bottom plate is slidably connected inside the cabin body, two slide rods are fixed inside the bottom plate, an electric movable block is slidably connected to the outer periphery of each slide rod, a rotating rod is rotatably arranged inside the electric movable block, a connecting block is rotatably arranged at the end of the rotating rod away from the electric movable block, a solar panel is fixed at the end of the connecting block away from the rotating rod, and a support frame is installed at the bottom of the solar panel.

[0010] Preferably, the support assembly comprises a mounting block fixed to the outer periphery of the base, a concave block is fixed to the side of the mounting block away from the base, a mechanical leg is movably connected inside the concave block, a plurality of transmission lines are installed on the outer periphery of the mechanical leg, an adapter block is fixed to the end of the mechanical leg away from the concave block, a pulley is fixed to the side of the adapter block away from the mechanical leg, and an anchoring assembly is arranged on both sides of the adapter block.

[0011] Preferably, the driving assembly comprises an electric motor fixed inside the cabin body, a worm is fixed to the output end of the electric motor, a worm gear is rotatably arranged inside the cabin body, the worm is engaged with the worm gear, a threaded rod is fixed inside the worm gear, a sliding block is threadedly connected to the outer periphery of the threaded rod, an electric telescopic rod is fixed to the top of the sliding block, a rectangular block is fixed to the end of the electric telescopic rod away from the sliding block, and a cleaning assembly is arranged on one side of the rectangular block.

[0012] Preferably, two hydraulic damping rods are fixed to the side of the base close to the intermediate cover, a protective cover is fixed to the top of the base, and a plurality of fixing assemblies are arranged inside the base.

[0013] Preferably, the anchoring assembly includes an electric moving block, which is slidably connected to the interior of the connecting block, and a fixed anchor rod is fixed inside the electric moving block.

[0014] Preferably, the cleaning assembly includes a brush plate, which is fixed to one side of the rectangular block. A cleaning brush is slidably connected to the interior of the brush plate, and a spring damping rod is fixed to the top of the cleaning brush.

[0015] Preferably, the fixing assembly includes a screw, which is threadedly connected to the inside of the base, a handle is fixed to one end of the screw away from the base, and a clamp is rotatably connected to the other end of the screw away from the handle.

[0016] Preferably, the protection component includes an electric slider, which is slidably connected to one side of the cabin body. A rotating rod is rotatably connected inside the electric slider, and a protective plate is rotatably provided at one end of the rotating rod away from the electric slider.

[0017] Preferably, one end of the spring damping rod away from the cleaning brush is fixed inside the brush plate, and the sliding block is slidably connected to the inside of the cabin.

[0018] Preferably, one end of the clamping block away from the screw rod abuts against the outer periphery of the soil sensor.

[0019] The present invention provides a natural resource intelligent monitoring device. It has the following beneficial effects:

[0020] 1. This invention extends the device's battery life through its energy components. The solar panels are adjusted by electrically movable blocks to maintain optimal orientation, maximizing solar energy collection and ensuring continuous operation. Furthermore, the vibration power generation module provides backup power during periods of insufficient sunlight, ensuring efficient operation even in extreme weather conditions. This eliminates the traditional dependence on external power supplies and ensures continuous monitoring.

[0021] 2. The present invention ensures the stable operation of the soil monitoring system in various complex terrains and severe weather conditions through the mutual cooperation between the support assembly and the anchor assembly. The coordinated use of the hydraulic damping rod and the anchor assembly enables the device to automatically adjust its height according to environmental changes and maintain a stable position on the ground, effectively solving the problem that traditional devices cannot operate stably in uneven terrain or strong wind environments.

[0022] 3. The present invention can automatically clean the sensor surface when the equipment is running for a long time through the cleaning component, ensuring the stability and high precision of the equipment during long-term use. This intelligent cleaning function not only improves the accuracy of the data, but also effectively reduces the maintenance difficulty and cost of the equipment, and solves the monitoring error problem caused by dust accumulation in traditional devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 is a schematic diagram of the cabin of the present invention;

[0025] Figure 3 is a schematic diagram of the base of the present invention;

[0026] Figure 4 is a schematic diagram of a solar panel of the present invention;

[0027] Figure 5 is a schematic diagram of the electrically movable block of the present invention;

[0028] Figure 6 is a schematic diagram of a protective plate of the present invention;

[0029] Figure 7 is a schematic diagram of a threaded rod of the present invention;

[0030] Figure 8 A schematic diagram of a clamping block according to the present invention;

[0031] Figure 9 Schematic diagram of the mechanical leg of the present invention.

[0032] Among them, 1. Cabin; 2. Energy component; 201. Bottom plate; 202. Slide rod; 203. Electric movable block; 204. Rotating rod; 205. Connecting block; 206. Solar panel; 207. Support frame; 3. Cleaning component; 301. Brush plate; 302. Spring damping rod; 303. Cleaning brush; 4. Protection component; 401. Electric slider; 402. Rotating rod; 403. Protection plate; 5. Base; 6. Support component; 601. Mounting block; 602. Concave block; 603. Mechanical leg; 604. Transmission line; 605. Connecting block ;606, pulley; 7, top cover; 8, wind direction sensor; 9, fixing assembly; 901, turning handle; 902, screw; 903, clamping block; 10, anchoring assembly; 1001, electric moving block; 1002, fixed anchor rod; 11, hydraulic damping rod; 12, protective cover; 13, intermediate cover; 14, movable cover; 15, driving assembly; 1501, motor; 1502, worm; 1503, worm gear; 1504, threaded rod; 1505, sliding block; 1506, electric telescopic rod; 1507, rectangular block; 16, soil sensor. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the present specification. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Please see the attached Figure 1 - Attachment Figure 3 An embodiment of the present invention provides a natural resource intelligent monitoring device, including a cabin 1, a movable cover 14 is installed at the bottom of the cabin 1, an intermediate cover 13 is slidably connected to the outer periphery of the movable cover 14 away from the cabin 1, a base 5 is fixed to the side of the intermediate cover 13 away from the cabin 1, a soil sensor 16 is installed inside the base 5, two hydraulic damping rods 11 are fixed to the side of the base 5 close to the intermediate cover 13, a protective cover 12 is fixed to the top of the base 5, a plurality of fixing components 9 are provided inside the base 5, a plurality of supporting components 6 are provided on the outer periphery of the base 5, protective components 4 are provided on both sides of the cabin 1, two wind direction sensors 8 are installed on the front side of the cabin 1, a top cover 7 is movably connected to the rear side of the cabin 1, an energy component 2 is slidably connected to the interior of the cabin 1, and a driving component 15 is provided inside the cabin 1;

[0035] Specifically, the cabin 1 is used to carry and protect the various internal components to ensure that the device can work stably in various harsh environments. A vibration power generation module is also provided inside. The movable cover 14 is connected to the bottom of the cabin 1 to provide protection and shielding. The intermediate cover 13 is used to accommodate the movable cover 14. The base 5 is used to install a soil sensor 16 for real-time monitoring of soil moisture, temperature and other parameters to provide important data support. The support assembly 6 is used to support the cabin 1 and drive the cabin 1 to move. The hydraulic damping rod 11 can automatically adjust the height of the cabin 1 according to changes in the external environment to prevent damage to the device in harsh weather. The protective cover 12 is used to protect important components such as internal sensors. The protective assembly 4 is used to block rain. The wind direction sensor 8 is used to monitor wind speed and direction to adjust the working state of the device in different environments. The top cover 7 is used to block the solar panels. The energy assembly 2 is used to provide energy and power for the monitoring device.

[0036] Please see the attached Figure 3 - Attachment Figure 5 The energy component 2 includes a base plate 201, which is slidably connected to the inside of the cabin 1. Two sliding rods 202 are fixed inside the base plate 201. The outer periphery of the two sliding rods 202 is slidably connected to an electric movable block 203. A rotating rod 204 rotates inside the electric movable block 203. A connecting block 205 rotates on the end of the rotating rod 204 away from the electric movable block 203. A solar panel 206 is fixed on the end of the connecting block 205 away from the rotating rod 204. A support frame 207 is installed at the bottom of the solar panel 206.

[0037] Specifically, the base plate 201 can move inside the cabin 1 to adapt to different environmental conditions. The slide rod 202 is used to guide the movement of the electric movable block 203. The rotating rod 204 is used to connect the electric movable block 203 and the connecting block 205 so that the angle of the solar panel 206 can be adjusted. The support frame 207 is fixed to the bottom of the solar panel 206 to provide stable support for the solar panel 206.

[0038] Please see the attached Figure 9 The support assembly 6 includes a mounting block 601, which is fixed to the outer periphery of the base 5. A concave block 602 is fixed to the side of the mounting block 601 away from the base 5. The concave block 602 is movably connected to the inside of the mechanical leg 603. A plurality of transmission lines 604 are installed on the outer periphery of the mechanical leg 603. A connecting block 605 is fixed to the end of the mechanical leg 603 away from the concave block 602. A pulley 606 is fixed to the side of the connecting block 605 away from the mechanical leg 603. Anchoring assemblies 10 are provided on both sides of the connecting block 605.

[0039] Specifically, the mounting block 601 is fixed on the periphery of the base 5 and cooperates with the concave block 602 to connect the base 5 and the mechanical leg 603. The mechanical leg 603 is movably connected inside the concave block 602, so that the mechanical leg 603 can automatically adjust its height according to changes in the terrain, providing flexible ground adaptability. Multiple transmission lines 604 are installed on the periphery of the mechanical leg 603 for transmitting adjustment data to ensure the normal operation of the device. The connecting block 605 is used to connect the pulley 606 and the mechanical leg 603 to adjust the position of the equipment.

[0040] Please see the attached Figure 7 The driving component 15 includes a motor 1501, which is fixed inside the cabin 1. A worm 1502 is fixed to the output end of the motor 1501. A worm wheel 1503 rotates inside the cabin 1. The worm 1502 is engaged with the worm wheel 1503. A threaded rod 1504 is fixed inside the worm wheel 1503. The outer periphery of the threaded rod 1504 is threadedly connected to a sliding block 1505. An electric telescopic rod 1506 is fixed to the top of the sliding block 1505. A rectangular block 1507 is fixed to the end of the electric telescopic rod 1506 away from the sliding block 1505. A cleaning component 3 is provided on one side of the rectangular block 1507.

[0041] Specifically, the motor 1501 is fixed inside the cabin 1, and the output end is connected to the worm 1502, which drives the worm wheel 1503 inside the cabin 1 to rotate. The worm 1502 is engaged with the worm wheel 1503, and the worm wheel 1503 is connected to the threaded rod 1504. When the worm wheel 1503 rotates, the threaded rod 1504 rotates together, and the sliding block 1505 can move horizontally along the threaded rod 1504. An electric telescopic rod 1506 is fixed on the top of the sliding block 1505, and the electric telescopic rod 1506 is connected to the rectangular block 1507 for controlling the movement of the rectangular block 1507.

[0042] Please see the attached Figure 9 The anchoring assembly 10 includes an electric moving block 1001 , which is slidably connected to the inside of the connecting block 605 , and a fixed anchor rod 1002 is fixed inside the electric moving block 1001 .

[0043] Specifically, a fixed anchor rod 1002 is fixed inside the electric moving block 1001. When the electric moving block 1001 slides, the fixed anchor rod 1002 can penetrate into the soil or soft ground to ensure that the equipment is stably fixed on the ground and prevent external forces from affecting the position change of the device.

[0044] Please see the attached Figure 7 The cleaning assembly 3 includes a brush plate 301, which is fixed on one side of the rectangular block 1507. A cleaning brush 303 is slidably connected to the inside of the brush plate 301. A spring damping rod 302 is fixed to the top of the cleaning brush 303. The end of the spring damping rod 302 away from the cleaning brush 303 is fixed to the inside of the brush plate 301, and the sliding block 1505 is slidably connected to the inside of the cabin 1.

[0045] Specifically, the brush plate 301 is fixed on one side of the rectangular block 1507. When the rectangular block 1507 moves, the brush plate 301 can be driven to move together. A cleaning brush 303 is slidably connected inside the brush plate 301. The cleaning brush 303 is used to remove dust and debris attached to the surface of the solar panel 206. A spring damping rod 302 is fixed on the top of the cleaning brush 303 to absorb the impact during the cleaning process to avoid damage to the solar panel 206.

[0046] Please see the attached Figure 8 The fixing assembly 9 includes a screw 902, which is threadedly connected to the inside of the base 5. A handle 901 is fixed to the end of the screw 902 away from the base 5. The end of the screw 902 away from the handle 901 is rotatably connected to a clamping block 903, and the end of the clamping block 903 away from the screw 902 abuts against the outer periphery of the soil sensor 16.

[0047] Specifically, the screw 902 is threadedly connected to the inside of the base 5, and the handle 901 is used to control the rotation of the screw 902. The screw 902 is rotatably connected to the clamp 903. When the screw 902 rotates, it will move inside the base 5 and drive the clamp 903 to move horizontally. The position of the clamp 903 is adjusted by the screw 902. When the end of the clamp 903 away from the screw abuts against the outer periphery of the soil sensor 16, the soil sensor 16 can be fixed in the base 5 to prevent the sensor from being suddenly affected by vibration or external force and thus improve the accuracy of the detection data.

[0048] Please see the attached Figure 2 With attached Figure 6 The protection component 4 includes an electric slider 401, which is slidably connected to one side of the cabin 1. The internal rotation of the electric slider 401 is connected to a rotating rod 402, and the end of the rotating rod 402 away from the electric slider 401 is rotated with a protective plate 403.

[0049] Specifically, the electric slider 401 is slidably connected to one side of the cabin 1, and the two ends of the rotating rod 402 are respectively connected to the protective plate 403 and the electric slider 401. When the electric slider 401 moves, the rotating rod 402 will rotate accordingly, thereby controlling the deployment of the protective plate 403.

[0050] Working principle: Before monitoring the soil, first install the soil sensor 16 inside the base 5, first rotate the handle 901 to make the screw 902 drive the clamping block 903 to move inside the base 5, then connect the soil sensor 16 to the data interface inside the base 5, then rotate the handle 901 again to make the clamping block 903 contact the outer periphery of the soil sensor 16 to complete the installation of the soil sensor 16, then unfold the multiple mechanical legs 603 on the outer periphery of the base 5, and then use the connecting block 605 to move the cabin 1 to the location to be monitored.

[0051] After the cabin 1 moves to the monitoring location, the two hydraulic damping rods 11 are started, so that the two hydraulic damping rods 11 drive the movable cover 14 to move upward, so that the height of the cabin 1 is increased, and then the fixed anchor rod 1002 can be started, so that the fixed anchor rod 1002 drives the electric movable block 1001 to move toward the soil. After the electric movable block 1001 is inserted into the soil, the equipment is fixed, and then the electric movable block 203 is started, so that the electric movable block 203 moves along the slide rod 202. When the electric movable block 203 moves, the rotating rod 204 generates a corresponding rotation, thereby controlling the solar panel 206 to generate a certain rotation, absorb solar light, and power the monitoring equipment.

[0052] When encountering severe rainy or snowy weather, the solar panel 206 is folded up, and then the electric slider 401 is started to move vertically along the side of the cabin 1. When the electric slider 401 moves, the rotating rod 402 inside the electric slider 401 will rotate, thereby unfolding the protective plate 403, and at this time, the top cover 7 will cover the solar panel 206 to prevent rainwater from dripping directly onto the solar panel 206.

[0053] When the solar panel 206 needs to be cleaned, the electric telescopic rod 1506 is first started to move the rectangular block 1507 upward, and the brush plate 301 drives the cleaning brush 303 to move upward. Then the motor 1501 can be started, and the motor 1501 drives the worm 1502 to rotate. Then, through the cooperation of the worm 1502 and the worm wheel 1503, the threaded rod 1504 rotates, and then the sliding block 1505 moves along the threaded rod 1504, and the cleaning brush 303 slides on the surface of the solar panel 206, thereby completing the cleaning of the solar panel 206.

[0054] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A natural resource intelligent monitoring device, comprising a cabin (1), characterized in that: A movable cover (14) is installed at the bottom of the cabin (1), and an intermediate cover (13) is slidably connected to the outer periphery of one end of the movable cover (14) away from the cabin (1). A base (5) is fixed to the side of the intermediate cover (13) away from the cabin (1), and a soil sensor (16) is installed inside the base (5). A plurality of support components (6) are provided on the outer periphery of the base (5). Protective components (4) are provided on the left and right sides of the cabin (1). Two wind direction sensors (8) are installed on the front side of the cabin (1). A top cover (7) is movably connected to the rear side of the cabin (1). An energy component (2) is slidably connected to the interior of the cabin (1), and a drive component (15) is provided inside the cabin (1). The energy component (2) includes a bottom plate (201), the bottom plate (201) is slidably connected to the interior of the cabin (1), two sliding rods (202) are fixed inside the bottom plate (201), the outer peripheries of the two sliding rods (202) are slidably connected to an electric movable block (203), a rotating rod (204) is rotatably provided inside the electric movable block (203), a connecting block (205) is rotatably provided at one end of the rotating rod (204) away from the electric movable block (203), a solar panel (206) is fixed at one end of the connecting block (205) away from the rotating rod (204), and a support frame (207) is installed at the bottom of the solar panel (206); The protection assembly (4) includes an electric slider (401), the electric slider (401) is slidably connected to one side of the cabin (1), the electric slider (401) is internally rotatably connected to a rotating rod (402), and the end of the rotating rod (402) away from the electric slider (401) is rotatably connected to a protection plate (403); The support assembly (6) includes a mounting block (601), the mounting block (601) is fixed to the periphery of the base (5), a concave block (602) is fixed on the side of the mounting block (601) away from the base (5), a mechanical leg (603) is movably connected inside the concave block (602), a plurality of transmission lines (604) are installed on the periphery of the mechanical leg (603), a connecting block (605) is fixed on one end of the mechanical leg (603) away from the concave block (602), a pulley (606) is fixed on the side of the connecting block (605) away from the mechanical leg (603), and anchoring assemblies (10) are provided on both sides of the connecting block (605); Two hydraulic damping rods (11) are fixed to one side of the base (5) close to the intermediate cover (13), a protective cover (12) is fixed to the top of the base (5), and a plurality of fixing components (9) are provided inside the base (5).

2. A natural resource intelligent monitoring device according to claim 1, characterized in that: The driving assembly (15) includes a motor (1501), the motor (1501) is fixed inside the cabin (1), a worm (1502) is fixed to the output end of the motor (1501), a worm wheel (1503) rotates inside the cabin (1), the worm (1502) is meshed with the worm wheel (1503), a threaded rod (1504) is fixed inside the worm wheel (1503), the outer periphery of the threaded rod (1504) is threadedly connected to a sliding block (1505), an electric telescopic rod (1506) is fixed to the top of the sliding block (1505), a rectangular block (1507) is fixed to the end of the electric telescopic rod (1506) away from the sliding block (1505), and a cleaning assembly (3) is provided on one side of the rectangular block (1507).

3. The natural resource intelligent monitoring device according to claim 1, characterized in that: The anchoring assembly (10) comprises an electric moving block (1001), the electric moving block (1001) being slidably connected to the interior of the connecting block (605), and a fixed anchor rod (1002) being fixed inside the electric moving block (1001).

4. A natural resource intelligent monitoring device according to claim 2, characterized in that: The cleaning assembly (3) comprises a brush plate (301), the brush plate (301) being fixed to one side of the rectangular block (1507), a cleaning brush (303) being slidably connected inside the brush plate (301), and a spring damping rod (302) being fixed to the top of the cleaning brush (303).

5. The natural resource intelligent monitoring device according to claim 1, characterized in that: The fixing assembly (9) comprises a screw (902), wherein the screw (902) is threadedly connected to the interior of the base (5), a turning handle (901) is fixed to one end of the screw (902) away from the base (5), and a clamping block (903) is rotatably connected to the other end of the screw (902) away from the turning handle (901).

6. A natural resource intelligent monitoring device according to claim 4, characterized in that: One end of the spring damping rod (302) away from the cleaning brush (303) is fixed inside the brush plate (301), and the sliding block (1505) is slidably connected inside the cabin (1).

7. The natural resource intelligent monitoring device according to claim 5, characterized in that: One end of the clamping block (903) away from the screw rod (902) abuts against the outer periphery of the soil sensor (16).

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