Farmland intelligent monitoring device for farmland irrigation

Abstract

The invention relates to the technical field of farmland irrigation, and discloses an intelligent farmland monitoring device for farmland irrigation, which is characterized by comprising a moisture sensor, a water level sensor and a controller electrically connected with the moisture sensor and the water level sensor, the water level sensor is connected with a fixer and provided with a rotating cylinder, the rotating cylinder is provided with a graduated scale, a communicating hole and a wire mesh cylinder, the wire mesh cylinder is rotationally connected with the rotating cylinder, and the bottom of the wire mesh cylinder movably abuts against the fixing plate; the moisture sensor monitors moisture data of farmland soil and transmits the moisture data to the controller, a water body on the farmland soil penetrates through the iron wire net barrel and the communicating hole to enter the barrel cavity, and the water level sensor monitors water level data in the barrel cavity and transmits the water level data to the controller; when water flows in the wire mesh cylinder, the water drives the wire mesh cylinder to rotate relative to the rotating cylinder, and the rotating cylinder rotates relative to the fixed plate; through the structure, layout and mutual relation of all the components, reasonable arrangement of the monitoring device is achieved, and the accuracy of farmland soil body water level monitoring is improved.

Description

Technical Field

[0001] This invention patent relates to the technical field of farmland irrigation, and more specifically, to a smart monitoring device for farmland irrigation. Background Technology

[0002] In the field of farmland irrigation, accurate monitoring of farmland soil water level is crucial for rational irrigation, water conservation, and ensuring crop yield and quality. The proper placement of monitoring devices is a prerequisite for accurate monitoring of farmland soil water level.

[0003] However, in existing technologies, most monitoring devices use simple water level sensors that are placed directly on the surface of farmland soil or inserted into the soil. This arrangement has obvious drawbacks: First, water level sensors are directly exposed to the external environment and are easily interfered with by floating objects and debris in farmland. These floating objects may adhere to the sensor surface, affecting the sensor's accurate sensing of water level and causing deviations in monitoring data. Moreover, when water flows, the lack of buffer and guidance structures means that the direct impact of the water may cause the sensor to shake or shift, further reducing the accuracy of the monitoring data.

[0004] Furthermore, existing monitoring devices lack effective control over the process of water entering the sensor monitoring area. Impurities in the water can easily clog the sensor's inlet or seepage path, causing the sensor to be unable to detect water level changes in a timely and accurate manner, thus affecting the reliability of the entire monitoring system. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent monitoring device for farmland irrigation, which aims to solve the problem of inaccurate monitoring of farmland soil water level caused by unreasonable device layout in the prior art.

[0006] The present invention is implemented as follows: a smart monitoring device for farmland irrigation includes multiple moisture sensors inserted into the farmland soil to monitor the soil moisture content, multiple water level sensors placed on the farmland soil to monitor the soil water level, and a controller that communicates with a control center. The moisture sensors and water level sensors are electrically connected to the controller. The water level sensor is connected to a fixture, which includes a fixing plate that is horizontally fixed to the farmland soil. The fixing plate has a longitudinally arranged rotating cylinder made of transparent material, the bottom of which is eccentrically connected to the fixing plate. The rotating cylinder has a longitudinally arranged cavity that extends through the top of the rotating cylinder, forming a top opening. The water level sensor is strip-shaped and fixed to the inner wall of the cylinder, extending longitudinally along the cylinder. The bottom of the water level sensor extends to the bottom of the cylinder, and the top of the water level sensor extends to the top of the cylinder. The rotating cylinder is equipped with a scale that extends along the height of the rotating cylinder. The outer periphery of the rotating cylinder is provided with multiple through holes that are arranged inside and out. The through holes are strip-shaped and extend along the height of the rotating cylinder. The bottom of the through holes extends to the bottom of the cylinder cavity, and the top of the through holes extends to the upper part of the cylinder cavity. Water from the farmland soil enters the cylinder cavity through the multiple through holes. A wire mesh tube is fitted around the outer periphery of the rotating cylinder. The wire mesh tube is arranged around the outer periphery of the rotating cylinder and has an annular gap with the rotating cylinder. The top of the wire mesh tube extends above the connecting hole and is rotatably connected to the rotating cylinder. The bottom of the wire mesh tube is movably pressed against the fixed plate. The moisture sensor monitors the moisture data of the farmland soil and transmits it to the controller. Water from the farmland soil passes through the wire mesh tube and the connecting hole into the tube cavity. The water level sensor monitors the water level data in the tube cavity and transmits it to the controller. When the water flows in the wire mesh tube, the water drives the wire mesh tube to rotate relative to the rotating cylinder, and the rotating cylinder rotates relative to the fixed plate.

[0007] Furthermore, the bottom of the fixing plate is provided with a plurality of fixing pins, which are arranged around the circumference of the rotating cylinder; the fixing pins pass through the fixing plate and are inserted into the farmland soil so that the fixing plate is horizontally fixed on the farmland soil.

[0008] Furthermore, the top of the fixing pin has a top head, the fixing pin has an upper section extending above the fixing plate and an insertion section penetrating into the farmland soil, the top head is disposed on the upper section; an elastic ring made of elastic material is sleeved on the outer periphery of the upper section, the bottom of the elastic ring abuts against the fixing plate, the top of the elastic ring abuts against the top head, and the elastic ring is in a compressed deformation state.

[0009] Furthermore, the outer periphery of the insertion segment has multiple outer rings made of elastic material, which are spaced apart along the axial direction of the insertion segment and arranged around the circumference of the insertion segment. The top of each outer ring has an upward-facing stepped ring surface. When the insertion segment is inserted into the farmland soil, the farmland soil presses against the stepped ring surface from top to bottom.

[0010] Furthermore, the outer periphery of the outer ring has an outwardly arranged outer peripheral side surface, and along the direction from top to bottom of the outer peripheral side surface, the outer peripheral side surface is arranged inwardly at an angle; the bottom of the outer peripheral side surface is fixedly connected to the outer periphery of the insertion section, and the top of the outer peripheral side surface is connected to the outer periphery of the stepped ring surface.

[0011] Furthermore, the outer side of the stepped annular surface is connected to the outer peripheral side surface, and an annular hollow area is formed on the inner side of the stepped annular surface. The hollow area is arranged around the outer periphery of the insertion section, and the outer periphery of the insertion section is exposed in the hollow area. An inclined channel is provided in the outer circumference ring. The lower end of the inclined channel penetrates through the outer circumference side, and the upper end of the inclined channel penetrates into the hollow area. Along the direction of the inclined channel from bottom to top, the inclined channel is arranged inwardly at an angle, and the diameter of the inclined channel gradually decreases. When the insertion segment is inserted into the farmland soil, the farmland soil is embedded in the hollow area and the inclined channel, and the farmland soil is squeezed and deformed outward from the outer periphery.

[0012] Furthermore, the top of the wire mesh cylinder is provided with an annular bar, which is arranged around the outer periphery of the rotating cylinder. The outer periphery of the rotating cylinder is provided with an annular groove, and the annular bar is movably placed in the annular groove. When the wire mesh cylinder rotates relative to the rotating cylinder, the annular bar rotates along the annular groove.

[0013] Furthermore, the bottom of the rotating cylinder has a bottom plate, and the fixed plate is provided with a convex shaft. The convex shaft passes through the bottom plate and is rotatably connected to the bottom plate, and the convex shaft is eccentrically arranged with respect to the bottom plate. When the rotating cylinder rotates relative to the fixed plate, the rotating cylinder rotates eccentrically with the convex shaft as the rotation center.

[0014] Furthermore, the outer periphery of the wire mesh cylinder is provided with a plurality of elastic strips, which are arranged at intervals along the axial direction of the wire mesh cylinder and staggered along the circumferential direction of the wire mesh cylinder.

[0015] Furthermore, along the axial direction of the wire mesh cylinder, floating strips are connected between adjacent elastic strips. The density of the floating strips is less than that of water, and the floating strips are arranged at an angle to the axial direction of the wire mesh cylinder.

[0016] Compared with existing technologies, the intelligent farmland monitoring device for irrigation provided by this invention achieves a reasonable arrangement of the monitoring device through the structure, layout, and interrelationship of its components, thereby improving the accuracy of farmland soil water level monitoring. Specifically, it has the following technical advantages: 1) By setting the water level sensor in the shape of a strip and fixing it on the inner wall of the rotating cylinder cavity, and extending it longitudinally along the cylinder cavity, with its bottom extending to the bottom of the cylinder cavity and its top extending to the top of the cylinder cavity, the water level changes in the cylinder cavity can be monitored in all directions and with high sensitivity, ensuring the accurate acquisition of water level data. 2) By eccentrically rotating the bottom of the rotating cylinder to the fixed plate, the rotating cylinder can rotate appropriately with the water flow. At the same time, the wire mesh cylinder will also rotate relative to the rotating cylinder when the water flows. This can effectively reduce the impact and interference of the water flow on the water level sensor, avoid sensor displacement or damage due to water sloshing and flow, ensure that the sensor works in a relatively stable environment, and improve the reliability of monitoring data. 3) The wire mesh tube around the rotating cylinder acts like a "protective shield," preventing floating objects and impurities in the farmland soil from entering the cylinder cavity and interfering with the normal operation of the water level sensor. Moreover, when the water flows, the centrifugal force generated by driving the wire mesh tube to rotate and the scouring effect of the water flow can dislodge impurities attached to the wire mesh tube and the vicinity of the connecting holes, thereby preventing the connecting holes from being blocked and ensuring that the water on the farmland soil can smoothly enter the cylinder cavity, enabling the water level sensor to detect water level changes in a timely and accurate manner. 4) The moisture sensor and water level sensor are electrically connected to the controller, which can transmit the moisture and water level data of the farmland soil to the control center in real time. This not only realizes the synchronous monitoring of the soil moisture content and water level, but also makes it easier for managers to centrally manage, analyze and make decisions on farmland irrigation through the control center, thereby improving the efficiency and accuracy of farmland irrigation management. Attached Figure Description

[0017] Figure 1 This is a perspective schematic diagram of the intelligent monitoring device for farmland irrigation provided by the present invention. Figure 2 This is a cross-sectional structural diagram of the rotating cylinder and the fixed plate provided by the present invention; Figure 3 This is a partial structural schematic diagram of the insertion segment provided by the present invention; In the diagram: moisture sensor 100, water level sensor 101, controller 102; Rotating cylinder 200, cylinder cavity 201, scale 202, connecting hole 203, wire mesh cylinder 204, annular interval 205, bottom plate 206, convex shaft 207, elastic strip 208, floating strip 209; Fixed plate 300, fixed pin 301, top head 302, upper section 303, insertion section 304, elastic ring 305, outer ring 306, stepped ring surface 307, outer side surface 308, hollow area 309, inclined channel 310. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0019] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0020] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0021] Reference Figure 1-3 The image shows a preferred embodiment of the present invention.

[0022] The intelligent monitoring device for farmland irrigation includes multiple moisture sensors 100 inserted into the farmland soil to monitor the soil moisture content, multiple water level sensors 101 placed on the farmland soil to monitor the soil water level, and a controller 102 that communicates with a control center. The moisture sensors 100 and water level sensors 101 are electrically connected to the controller 102. The water level sensor 101 is connected to a fixture, which includes a fixing plate 300, which is horizontally fixed to the farmland soil. The fixing plate 300 is provided with a longitudinally arranged rotating cylinder 200 made of transparent material. The bottom of the rotating cylinder 200 is eccentrically rotatably connected to the fixing plate 300. The rotating cylinder 200 has a longitudinally arranged cavity 201, which extends through the top of the rotating cylinder 200 to form a top opening. The water level sensor 101 is strip-shaped and is fixed on the inner wall of the cylinder 201 and extends longitudinally along the cylinder 201; the bottom of the water level sensor 101 extends to the bottom of the cylinder 201 and the top of the water level sensor 101 extends to the top of the cylinder 201. A scale 202 is provided on the rotating cylinder 200, and the scale 202 extends along the height of the rotating cylinder 200; a plurality of through holes 203 are provided on the outer periphery of the rotating cylinder 200, which are strip-shaped and extend along the height direction of the rotating cylinder 200. The bottom of the through holes 203 extends to the bottom of the cylinder cavity 201, and the top of the through holes 203 extends to the upper part of the cylinder cavity 201. Water from the farmland soil enters the cylinder cavity 201 through the plurality of through holes 203. A wire mesh tube 204 is fitted around the outer periphery of the rotating cylinder 200. The wire mesh tube 204 is arranged around the outer periphery of the rotating cylinder 200 and has an annular gap 205 between it and the rotating cylinder 200. The top of the wire mesh tube 204 extends above the connecting hole 203 and is rotatably connected to the rotating cylinder 200. The bottom of the wire mesh tube 204 is movably pressed against the fixed plate 300. Moisture sensor 100 monitors the moisture data of farmland soil and transmits it to controller 102. Water on farmland soil passes through wire mesh cylinder 204 and connecting hole 203 and enters cylinder cavity 201. Water level sensor 101 monitors the water level data in cylinder cavity 201 and transmits it to controller 102. When water flows in wire mesh cylinder 204, the water drives wire mesh cylinder 204 to rotate relative to rotating cylinder 200, and rotating cylinder 200 rotates relative to fixed plate 300.

[0023] The aforementioned intelligent monitoring device for farmland irrigation achieves a rational arrangement of monitoring devices through the structure, layout, and interrelationship of its components, thereby improving the accuracy of farmland soil water level monitoring. Specifically, it offers the following technical advantages: 1) By setting the water level sensor 101 in the shape of a strip and fixing it on the inner wall of the cylinder cavity 201 of the rotating cylinder 200, and extending it longitudinally along the cylinder cavity 201, with its bottom extending to the bottom of the cylinder cavity 201 and its top extending to the top of the cylinder cavity 201, the water level changes in the cylinder cavity 201 can be monitored in an all-round and sensitive manner, ensuring the accurate acquisition of water level data. 2) By eccentrically rotating the bottom of the rotating cylinder 200 to the fixed plate 300, the rotating cylinder 200 can rotate appropriately with the water flow. At the same time, the wire mesh cylinder 204 will also rotate relative to the rotating cylinder 200 when the water flows. This can effectively reduce the impact and interference of the water flow on the water level sensor 101, avoid sensor displacement or damage due to water sloshing or flow, ensure that the sensor works in a relatively stable environment, and improve the reliability of monitoring data. 3) The wire mesh cylinder 204 around the rotating cylinder 200 acts like a "protective shield" to prevent floating objects and impurities in the farmland soil from entering the cylinder cavity 201 and interfering with the normal operation of the water level sensor 101. Moreover, when the water flows, the centrifugal force generated by driving the wire mesh cylinder 204 to rotate and the scouring effect of the water flow can remove impurities attached to the wire mesh cylinder 204 and the vicinity of the connecting hole 203, thereby preventing the connecting hole 203 from being blocked and ensuring that the water on the farmland soil can smoothly enter the cylinder cavity 201, so that the water level sensor 101 can detect water level changes in a timely and accurate manner. 4) The moisture sensor 100 and the water level sensor 101 are electrically connected to the controller 102, which can transmit the moisture and water level data of the farmland soil to the control center in real time. This not only realizes the synchronous monitoring of the moisture content and water level of the farmland soil, but also makes it easier for managers to centrally manage, analyze and make decisions on farmland irrigation through the control center, thereby improving the efficiency and accuracy of farmland irrigation management.

[0024] In this embodiment, the bottom of the fixing plate 300 is provided with a plurality of fixing pins 301, which are arranged around the circumference of the rotating cylinder 200. The fixing pins 301 pass through the fixing plate 300 and are inserted into the farmland soil so that the fixing plate 300 is horizontally fixed on the farmland soil.

[0025] The fixing plate 300 is firmly anchored in the farmland soil by multiple fixing pins 301, ensuring the horizontal stability of the fixing plate 300 and preventing the fixing plate 300 from tilting or shifting due to uneven soil settlement or water flow impact. This provides a stable foundation for the rotating cylinder 200 and other components subsequently installed on the fixing plate 300, effectively avoiding water level monitoring errors caused by insecure device fixing.

[0026] In this embodiment, the top of the fixing pin 301 has a top head 302. The fixing pin 301 has an upper section 303 extending above the fixing plate 300 and an insertion section 304 penetrating into the farmland soil. The top head 302 is disposed on the upper section 303. An elastic ring 305 made of elastic material is sleeved on the outer periphery of the upper section 303. The bottom of the elastic ring 305 abuts against the fixing plate 300, the top of the elastic ring 305 abuts against the top head 302, and the elastic ring 305 is in a compressed deformation state.

[0027] The elastic ring 305 acts as a buffer and shock absorber, adapting to minor deformations and vibrations of the soil. It prevents the fixing pin 301 from loosening or being damaged due to external impact. Furthermore, the elasticity of the elastic ring 305 ensures a tight connection between the fixing pin 301 and the fixing plate 300, further enhancing the stability of the entire device. This ensures that the water level sensor 101 can operate stably during long-term use and improves the reliability of the monitoring data.

[0028] In this embodiment, the outer periphery of the insertion segment 304 has multiple outer rings 306 made of elastic material. The multiple outer rings 306 are arranged at intervals along the axial direction of the insertion segment 304 and are arranged around the circumference of the insertion segment 304. The top of the outer ring 306 has an upward-facing stepped ring surface 307. When the insertion segment 304 is inserted into the farmland soil, the farmland soil presses against the stepped ring surface 307 from top to bottom.

[0029] The outer circumferential ring 306 and the stepped annular surface 307 increase the contact area between the fixing pin 301 and the soil, improve the lateral constraint force of the soil on the fixing pin 301, enhance the pull-out resistance of the fixing pin 301, ensure the stability of the fixing pin 301 in the soil, and effectively prevent the fixing pin 301 from loosening due to external forces, thereby ensuring the stability of the entire device and the accuracy of water level monitoring.

[0030] In this embodiment, the outer periphery of the outer ring 306 has an outwardly arranged outer periphery side 308, and along the direction from top to bottom of the outer periphery side 308, the outer periphery side 308 is arranged inwardly at an angle; the bottom of the outer periphery side 308 is fixedly connected to the outer periphery of the insertion section 304, and the top of the outer periphery side 308 is connected to the outer periphery of the stepped ring surface 307.

[0031] The inclined arrangement of the outer peripheral side 308 helps to guide the soil to fill around the insertion section 304, making the soil more tightly wrap around the insertion section 304, further enhancing the anchoring effect of the fixing pin 301 and improving the stability of the entire device. At the same time, this inclined structure also helps to reduce the resistance of the soil to the insertion section 304, making it easier to install the fixing pin 301.

[0032] In this embodiment, the outer side of the stepped annular surface 307 is connected to the outer peripheral side surface 308, and an annular hollow area 309 is formed on the inner side of the stepped annular surface 307. The hollow area 309 is arranged around the outer periphery 306 of the insertion section 304, and the outer periphery of the insertion section 304 is exposed in the hollow area 309. An inclined channel 310 is provided in the outer ring 306. The lower end of the inclined channel 310 penetrates the outer side 308, and the upper end of the inclined channel 310 penetrates to the hollow area 309. Along the direction of the inclined channel 310 from bottom to top, the inclined channel 310 is arranged inwardly, and the diameter of the inclined channel 310 gradually decreases. When the insertion segment 304 is inserted into the farmland soil, the farmland soil is embedded in the hollow area 309 and the inclined channel 310, which compresses the outer ring 306 to expand and deform outward.

[0033] This makes the connection between the fixing pin 301 and the soil tighter, thereby improving the stability of the fixing pin 301. After the outer ring 306 is squeezed and deformed, its elastic reaction force can enhance the friction between the fixing pin 301 and the soil, prevent the insertion section 304 from sliding in the soil, and ensure the stability of the fixing plate 300 and the accuracy of water level monitoring.

[0034] During the process of inserting the fixing pin 301 into the farmland soil, the presence of the inclined channel 310 facilitates the embedding of the outer ring 306 into the farmland soil. The farmland soil is embedded in the inclined channel 310, which compresses the inclined channel 310 to expand and deform outward, so that the outer ring 306 is firmly inserted into the farmland soil.

[0035] In this embodiment, the top of the wire mesh cylinder 204 is provided with an annular bar, which is arranged around the outer periphery 306 of the rotating cylinder 200. The outer periphery of the rotating cylinder 200 is provided with an annular groove, and the annular bar is movably placed in the annular groove. When the wire mesh cylinder 204 rotates relative to the rotating cylinder 200, the annular bar rotates along the annular groove.

[0036] The combination of the annular bar and the annular groove guides and limits the rotation of the wire mesh cylinder 204, allowing the wire mesh cylinder 204 to rotate smoothly and steadily relative to the rotating cylinder under the drive of water flow. This prevents the wire mesh cylinder 204 from shaking or deviating during rotation, ensuring stable and reliable relative motion between the wire mesh cylinder 204 and the rotating cylinder 200, and guaranteeing the normal operation of the monitoring device and the stability of the monitoring data.

[0037] In this embodiment, the bottom of the rotating cylinder 200 has a bottom plate 206, and the fixed plate 300 is provided with a convex shaft 207. The convex shaft 207 passes through the bottom plate 206 and is rotatably connected to the bottom plate 206. The convex shaft 207 and the bottom plate 206 are arranged eccentrically. When the rotating cylinder 200 rotates relative to the fixed plate 300, the rotating cylinder 200 rotates eccentrically with the convex shaft 207 as the rotation center.

[0038] The eccentric connection between the bottom plate 206 and the convex shaft 207 allows the rotating cylinder 200 to rotate eccentrically around the convex shaft 207 under the drive of water flow. This rotation of the rotating cylinder 200 creates a certain agitation effect on the water, which helps the water to be distributed more evenly in the cylinder cavity 201, avoiding local accumulation or poor flow of water in the cylinder cavity 201. This enables the water level sensor 101 to more accurately monitor the real water level of the farmland, thus improving the accuracy of water level monitoring.

[0039] In this embodiment, the outer periphery of the wire mesh cylinder 204 is provided with a plurality of elastic strips 208. The plurality of elastic strips 208 are arranged at intervals along the axial direction of the wire mesh cylinder 204 and are arranged in a staggered manner along the circumferential direction of the wire mesh cylinder 204.

[0040] By setting the elastic strip 208, the flexibility of the wire mesh cylinder 204 can be increased, enabling it to better adapt to the force generated by the water flow and convert the kinetic energy of the water into the rotational kinetic energy of the wire mesh cylinder 204, driving the wire mesh cylinder 204 to rotate along the direction of water flow. This helps the wire mesh cylinder 204 to clean impurities and floating objects attached to its surface, prevents the connecting hole 203 from becoming blocked, and thus ensures that the water level sensor 101 can accurately monitor water level changes.

[0041] In this embodiment, along the axial direction of the wire mesh cylinder 204, a floating strip 209 is connected between adjacent elastic strips 208. The density of the floating strip 209 is less than the density of the water, and the floating strip 209 is arranged at an angle to the axial direction of the wire mesh cylinder 204.

[0042] The floating strips 209 reduce the total density of the wire mesh cylinder 204, enabling it to maintain a certain buoyancy in the water, reducing the pressure of the water on the bottom of the wire mesh cylinder 204, and reducing the friction between the wire mesh cylinder 204 and the fixed plate 300. This makes it easier for the wire mesh cylinder 204 to rotate. In addition, the inclined floating strips 209 can guide the direction of water flow, further optimizing the flow state of the water in the wire mesh cylinder 204 and improving the stability of water level monitoring.

[0043] The following will provide a specific, clear, and complete description of the aforementioned intelligent monitoring device for farmland irrigation in practical applications, so as to make the implementation process of the intelligent monitoring device for farmland irrigation easier to understand.

[0044] The intelligent monitoring device for farmland irrigation includes multiple moisture sensors 100, a water level sensor 101, a calibration mechanism, a solar power supply mechanism, a controller 102, and a data management mechanism. Multiple moisture sensors 100 are distributed and installed in different locations in the farmland to monitor the soil moisture content in real time. A water level sensor 101 is installed in the farmland through a calibration mechanism to monitor the soil water level. The calibration mechanism can periodically or as needed calibrate the water level sensor 101 to ensure the accuracy of the water level data. A solar power supply mechanism provides stable power support for the entire monitoring device to ensure the normal operation of each component. A controller 102 is connected to the moisture sensor 100, the water level sensor 101, and the solar power supply mechanism. It is responsible for receiving the data collected by the sensors and performing preliminary processing and analysis. The controller 102 is connected to the data management mechanism through a wireless module to wirelessly transmit the processed data to the data management mechanism, realizing remote monitoring and management of the data. This allows managers to understand the moisture status of the farmland in a timely manner, formulate reasonable irrigation plans, achieve precision irrigation, improve irrigation efficiency, and save water resources.

[0045] 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, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A smart monitoring device for farmland irrigation, characterized in that, It includes multiple moisture sensors inserted into the farmland soil to monitor the soil moisture content, multiple water level sensors placed on the farmland soil to monitor the soil water level, and a controller that communicates with a control center. The moisture sensors and water level sensors are electrically connected to the controller. The water level sensor is connected to a fixture, which includes a fixing plate that is horizontally fixed to the farmland soil. The fixing plate is provided with a longitudinally arranged rotating cylinder made of transparent material, and the bottom of the rotating cylinder is eccentrically rotatably connected to the fixing plate. The rotating cylinder has a longitudinally arranged cavity that extends through the top of the rotating cylinder, forming a top opening; The water level sensor is strip-shaped and fixed to the inner wall of the cylinder, extending longitudinally along the cylinder. The bottom of the water level sensor extends to the bottom of the cylinder, and the top of the water level sensor extends to the top of the cylinder. The rotating cylinder is equipped with a scale that extends along the height of the rotating cylinder. The outer periphery of the rotating cylinder is provided with multiple through holes that are arranged inside and out. The through holes are strip-shaped and extend along the height of the rotating cylinder. The bottom of the through holes extends to the bottom of the cylinder cavity, and the top of the through holes extends to the upper part of the cylinder cavity. Water from the farmland soil enters the cylinder cavity through the multiple through holes. A wire mesh tube is fitted around the outer periphery of the rotating cylinder. The wire mesh tube is arranged around the outer periphery of the rotating cylinder and has an annular gap with the rotating cylinder. The top of the wire mesh tube extends above the connecting hole and is rotatably connected to the rotating cylinder. The bottom of the wire mesh tube is movably pressed against the fixed plate. The moisture sensor monitors the moisture data of the farmland soil and transmits it to the controller. Water from the farmland soil passes through the wire mesh tube and the connecting hole into the tube cavity. The water level sensor monitors the water level data in the tube cavity and transmits it to the controller. When the water flows in the wire mesh tube, the water drives the wire mesh tube to rotate relative to the rotating cylinder, and the rotating cylinder rotates relative to the fixed plate.

2. The intelligent monitoring device for farmland irrigation as described in claim 1, characterized in that, The bottom of the fixing plate is provided with multiple fixing pins, which are arranged around the circumference of the rotating cylinder; the fixing pins pass through the fixing plate and are inserted into the farmland soil so that the fixing plate is horizontally fixed on the farmland soil.

3. The intelligent monitoring device for farmland irrigation as described in claim 2, characterized in that, The top of the fixing pin has a top head, the fixing pin has an upper section extending above the fixing plate and an insertion section penetrating into the farmland soil, the top head is disposed on the upper section; an elastic ring made of elastic material is sleeved on the outer periphery of the upper section, the bottom of the elastic ring abuts against the fixing plate, the top of the elastic ring abuts against the top head, and the elastic ring is in a compressed deformation state.

4. The intelligent monitoring device for farmland irrigation as described in claim 3, characterized in that, The outer periphery of the insertion segment has multiple outer rings made of elastic material, which are arranged at intervals along the axial direction of the insertion segment and surround the insertion segment circumferentially. The top of each outer ring has an upward-facing stepped ring surface. When the insertion segment is inserted into the farmland soil, the farmland soil presses against the stepped ring surface from top to bottom.

5. The intelligent monitoring device for farmland irrigation as described in claim 4, characterized in that, The outer periphery of the outer ring has an outwardly arranged outer periphery side, and along the direction from top to bottom of the outer periphery side, the outer periphery side is arranged inwardly at an angle; the bottom of the outer periphery side is fixedly connected to the outer periphery of the insertion section, and the top of the outer periphery side is connected to the outer periphery of the stepped ring surface.

6. The intelligent monitoring device for farmland irrigation as described in claim 5, characterized in that, The outer side of the stepped annular surface is connected to the outer peripheral side surface, and an annular hollow area is formed on the inner side of the stepped annular surface. The hollow area is arranged around the outer periphery of the insertion section, and the outer periphery of the insertion section is exposed in the hollow area. An inclined channel is provided in the outer circumference ring. The lower end of the inclined channel penetrates through the outer circumference side, and the upper end of the inclined channel penetrates into the hollow area. Along the direction of the inclined channel from bottom to top, the inclined channel is arranged inwardly at an angle, and the diameter of the inclined channel gradually decreases. When the insertion segment is inserted into the farmland soil, the farmland soil is embedded in the hollow area and the inclined channel, and the farmland soil is squeezed and deformed outward from the outer periphery.

7. The intelligent monitoring device for farmland irrigation as described in claim 1, characterized in that, The top of the wire mesh cylinder is provided with an annular bar, which is arranged around the outer periphery of the rotating cylinder. The outer periphery of the rotating cylinder is provided with an annular groove, and the annular bar is movably placed in the annular groove. When the wire mesh cylinder rotates relative to the rotating cylinder, the annular bar rotates along the annular groove.

8. The intelligent monitoring device for farmland irrigation as described in claim 1, characterized in that, The bottom of the rotating cylinder has a bottom plate, and the fixed plate is provided with a convex shaft. The convex shaft passes through the bottom plate and is rotatably connected to the bottom plate. The convex shaft is eccentrically arranged with respect to the bottom plate. When the rotating cylinder rotates relative to the fixed plate, the rotating cylinder rotates eccentrically with the convex shaft as the rotation center.

9. The intelligent monitoring device for farmland irrigation as described in any one of claims 1-8, characterized in that, The outer periphery of the wire mesh cylinder is provided with multiple elastic strips, which are arranged at intervals along the axial direction of the wire mesh cylinder and staggered along the circumferential direction of the wire mesh cylinder.

10. The intelligent monitoring device for farmland irrigation as described in claim 9, characterized in that, Along the axial direction of the wire mesh cylinder, floating strips are connected between adjacent elastic strips. The density of the floating strips is less than that of water, and the floating strips are arranged at an angle to the axial direction of the wire mesh cylinder.

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