Intelligent measuring device for water depth of paddy field

Abstract

The utility model relates to a paddy field water depth intelligent measuring device, in particular to the field of depth measurement. A paddy field water depth intelligent measuring device comprises a frame body, a water level sensor is arranged on the frame body, the paddy field water depth intelligent measuring device further comprises a bottom plate fixedly arranged on the frame body, the bottom plate is located below the water level sensor, the bottom plate is fixed and known when used, and the bottom plate is submerged below the water surface and attached to the surface of a soil body at the water bottom when used. The position of the bottom plate is the position of the water bottom, the water level sensor can detect the height from the water level sensor to the water surface, and the difference between the distance from the water level sensor to the water bottom and the height from the water level sensor to the water surface is the water depth; the problems that in the prior art, the height of a water level sensor needs to be measured after the water level sensor is installed, and due to the fact that the water level sensor is shielded, the detection result is difficult to measure and even deviates are solved.

Description

Technical Field

[0001] The utility model relates to an intelligent measuring device for paddy field water depth, in particular to the field of depth measurement. Background Art

[0002] The water environment has a significant impact on the physiological activities of paddy field plants in many aspects, and plays a very important role in research fields such as ecology, agriculture, hydrology and climate. The water level in the paddy field will have a huge impact on the growth of paddy field plants, so the water level of the paddy field needs to be monitored.

[0003] The Chinese utility model patent with the authorization announcement date of April 9, 2024 and the authorization announcement number CN220751300U discloses a farmland water level measurement device, which includes a support assembly, a sliding sleeve is arranged in the middle of the frame, and a nested filter sleeve and a positioning tube are arranged in the sliding sleeve. The outer peripheral surface of the filter sleeve and the positioning tube are provided with filter holes to facilitate slowing down the water flow speed. A measuring tube is also inserted in the positioning tube, and a radar water level meter is installed in the measuring tube, which measures by emitting radar wave signals to the water surface. In order to protect the radar water level meter, a waterproof cover is also provided. When in use, the filter sleeve is installed in the farmland by pre-buried deep pits, gravel is filled between the filter sleeve and the positioning tube, and finally the soil is backfilled to the outside of the filter sleeve, and the installation is completed in conjunction with the support assembly (the support assembly and the filter sleeve constitute the frame).

[0004] A radar water level gauge is an electronic device that uses electromagnetic waves to detect targets. Based on the time-of-travel principle, generally, a radar water level gauge has a transmitting and receiving module. Radar wave signals are emitted through the transmitting and receiving module. These signals propagate at the speed of light. When the radar wave signals encounter the water surface, reflection occurs, and the reflected signals are captured by the transmitting and receiving module of the radar water level gauge. By measuring the time difference between the emission and reception of the radar wave signals, the distance between the radar water level gauge and the water surface can be calculated. In the above technical solution, the measurement result is only the height of the radar water level gauge (i.e., the water level sensor) from the water surface. When the water level changes, the distance between the water surface and the water level sensor also changes, and correspondingly, the measurement result also changes. That is to say, the above technical solution can only obtain the change in water level relative to the original water level, but cannot directly obtain the water depth information. To obtain the water depth information, it is necessary to obtain the height of the radar water level gauge from the ground at the beginning of the detection. Generally, the operator needs to measure manually. Since the height of the frame buried in the ground cannot be precisely controlled in the above solution, and the sensor is blocked by the filter sleeve and the positioning tube, it causes inconvenience in measurement and even errors, resulting in deviations in the final result. In addition, when the above device is installed in a paddy field, the environment where the frame is located is soaked by water and there is a possibility of subsidence. After using it for a period of time, it may sink or shift under the action of gravity, resulting in a change in the measurement reference, thus causing a large deviation between the measured water level and the actual water level. Additionally, the water sample detected by the above device is pressed into the measuring tube by atmospheric pressure. If used for a long time, after the filter screen is attached with weeds, sludge, etc., the water surface height in the measuring tube lags behind the water surface height outside the tube, which will affect the real-time performance and accuracy of the measurement and cause measurement errors. Utility Model Content

[0005] The purpose of the present utility model is to provide an intelligent water depth measuring device for paddy fields, which is used to solve the problem that in the prior art, the water level sensor needs to measure the height of the water level sensor after installation for the measurement of the water level, and due to the occlusion of the water level sensor, the detection result is difficult to measure or even deviated.

[0006] To achieve the above purpose, the intelligent water depth measuring device for paddy fields in the present utility model adopts the following technical solutions:

[0007] An intelligent water depth measuring device for paddy fields includes a frame fixed in a paddy field. A water level sensor is arranged on the frame and is located above the water surface during use to detect the distance to the water surface. The intelligent water depth measuring device for paddy fields further includes a bottom plate fixedly arranged on the frame. The bottom plate is located below the water level sensor and is submerged below the water surface and fits with the soil surface at the bottom of the water during use. There is a set height distance between the bottom plate and the water level sensor to obtain the water depth through the difference from the measurement result of the water level sensor.

[0008] Further, the frame body includes a baffle plate that is partially submerged below the water surface during use. The baffle plate is provided with flow-through holes for water to flow through, and a filter screen is also provided at the positions of the flow-through holes on the baffle plate. The baffle plate is used to enclose a measurement space communicating with the water body, and the bottom plate is fixedly arranged on the baffle plate and directly below the water level sensor.

[0009] Further, the baffle plate is provided with insertion parts for inserting into the soil of the paddy field.

[0010] Further, a mounting bracket for mounting the water level sensor is fixed on the frame body. The mounting bracket is provided with mounting holes through which the transmitting and receiving module of the water level sensor passes and is arranged downward.

[0011] Further, the mounting bracket is rotatably arranged on the frame body. The frame body includes a mounting plate for fixedly mounting the mounting bracket. The mounting bracket includes a fitting plate for fitting with the mounting plate. The fitting plate is rotatably mounted on the mounting plate through a first rotating shaft. The mounting plate is provided with a first arc-shaped guiding groove with the center of the circle located on the axis of the first rotating shaft. The mounting bracket and the mounting plate are fixedly connected through a first detachable fastener penetrating the first arc-shaped guiding groove.

[0012] Further, the mounting bracket includes a first bracket and a second bracket rotatably assembled on the first bracket through a second rotating shaft. The second rotating shaft is perpendicular to the first rotating shaft. The first bracket includes the fitting plate, and the mounting hole is located on the second bracket. The first bracket further includes a guiding plate arranged perpendicular to the fitting plate. The guiding plate is provided with a second arc-shaped guiding groove with the center of the circle located on the axis of the second rotating shaft. The first bracket and the second bracket are fixedly connected through a second detachable fastener penetrating the second arc-shaped guiding groove.

[0013] Further, there are two guiding plates. The two guiding plates are arranged in parallel. The second bracket is located between the two guiding plates, and the second bracket is rotatably assembled with the guiding plates on both sides respectively.

[0014] Further, the second detachable fastener is a screw. The second bracket is provided with screw through holes corresponding to the second arc-shaped guiding groove, and welded nuts threadedly matched with the screws are fixedly arranged on the inner side wall of the second bracket at the positions of the screw through holes.

[0015] Further, there are at least two first arc-shaped guiding grooves. The multiple first arc-shaped guiding grooves are arranged at intervals in the same circumferential direction, and the first detachable fasteners are arranged in one-to-one correspondence with the first arc-shaped guiding grooves.

[0016] Further, a detector for inserting into the water body to detect the water quality of the water body is also arranged in the measurement space. The intelligent paddy field water depth measuring device further includes a vertically arranged partition board, and the detector and the water level sensor are respectively located on both sides of the partition board.

[0017] The beneficial effects of the intelligent paddy field water depth measuring device in the present utility model are as follows: The present utility model belongs to an improved invention. By setting up a frame body, it is convenient to fix the device in the paddy field to be measured. By setting a water level sensor above the water surface on the frame body, it is convenient to measure the distance between the water level sensor and the water surface. Since only the distance between the water level sensor and the water surface is measured at this time, there is also a bottom plate fixedly arranged on the frame body, and the bottom plate is also fixedly arranged on the frame body. Then the distance between the bottom plate and the water level sensor is fixed, and the position where the bottom plate is located is the bottom position of the water. Then the height distance from the bottom plate to the water level sensor is also the distance between the water level sensor and the bottom of the water. Combining with the distance between the water surface and the water level sensor, the water depth can be obtained. Since the bottom plate is preset, the height information of the water level sensor is changed into the position information of two components in the same device, which is convenient to obtain this information. At the same time, the bottom plate fits with the soil surface at the bottom of the water, which also increases the contact area between the device and the water body, thus solving the problem in the prior art that the water level sensor needs to measure the height of the water level sensor after installation for measuring the water level, and due to the water level sensor being blocked, the detection result is difficult to measure or even deviated. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of an embodiment of the intelligent paddy field water depth measuring device in the present utility model;

[0019] Figure 2 is a schematic structural diagram of an embodiment of the intelligent paddy field water depth measuring device in the present utility model (part of the enclosing board is hidden for easy display);

[0020] Figure 3 is a front view of an embodiment of the intelligent paddy field water depth measuring device in the present utility model (part of the enclosing board is hidden for easy display);

[0021] Figure 4 is Figure 3 a partial enlarged view of part A in

[0022] Figure 5 is a schematic structural diagram of the enclosing board of an embodiment of the intelligent paddy field water depth measuring device in the present utility model;

[0023] Figure 6 is a schematic structural diagram of the mounting bracket of an embodiment of the intelligent paddy field water depth measuring device in the present utility model;

[0024] Figure 7 is an assembly schematic diagram of the mounting bracket and the radar water level gauge of an embodiment of the intelligent paddy field water depth measuring device in the present utility model.

[0025] In the figure: 11, vertical column; 12, enclosing baffle; 13, installation baffle; 14, solar panel; 151, wireless communication module; 152, power supply module; 153, power supply switch; 154, storage battery; 155, data acquisition module; 16, circulation hole; 2, radar water level gauge; 3, installation bracket; 31, fitting plate; 311, first arc-shaped guiding groove; 32, guiding plate; 321, second arc-shaped guiding groove; 33, second bracket; 34, installation hole; 35, reinforcing plate; 41, bottom plate; 42, partition board; 51, water sample retention box; 52, water quality sensor. Specific embodiments

[0026] The features and performance of the present utility model will be further described in detail below in conjunction with the embodiments.

[0027] In the present utility model, by fixedly arranging a bottom plate on the frame body that can be immersed in the water surface and fit the surface of the soil at the bottom of the water, and the distance between the bottom plate and the water level sensor is known, then the distance between the water level sensor and the bottom of the water can be known, and the water depth can be known through the height difference between the water level sensor and the water surface measured.

[0028] In Embodiment 1 of the intelligent water depth measuring device for paddy fields (hereinafter referred to as the measuring device) of the present utility model:

[0029] As Figure 1 , Figure 2 And Figure 3As shown in the figure, in this embodiment, the measuring device includes a frame body and a water level sensor disposed on the frame body for detecting the distance to the water surface. Specifically, the frame body includes three columns 11 for fixing into the soil at the bottom of the paddy field. The bottom of the column 11 is provided with a sharp corner to facilitate penetration into the soil. The side surface of the column 11 is provided with bolt mounting holes for bolts to pass through. The frame body further includes a plurality of baffles. The bottom baffle is inserted into the soil during use, thereby achieving good fixation and maintaining the stability of the measuring device even in the face of strong winds and heavy rains. The baffles are divided into two groups. The bottom group of baffles for insertion into the soil is denoted as the installation baffle 13. Four installation baffles 13 are provided to form a cube shape without a bottom and a top. Each baffle is provided with an insertion portion for insertion into the soil. The top baffle is used to enclose the water surface to form a separate space convenient for measurement. The top baffle is denoted as the maintenance baffle 12. Four maintenance baffles 12 are provided. Three of the maintenance baffles 12 are connected end to end in sequence to form a shape with a U-shaped opening. One baffle is hinged to one of the baffles. The four maintenance baffles 12 also form the box body of the measuring device. The baffle that can move along the hinge axis forms the box door of the box body. Of course, in other embodiments, the baffles may not be layered. There is only one layer of baffles. The bottom of the baffle is directly inserted into the soil. An inspection opening for personnel to repair or read the equipment is provided on one of the baffles. An inspection cover plate may also be provided on the inspection opening to protect the internal electronic equipment. Or, in other embodiments, the inspection opening may also be exposed. Or, in other embodiments, the baffles may not be inserted into the soil. At this time, the fixation of the frame body in the paddy field only depends on the columns.

[0030] When measuring the water level of the paddy field, it is necessary to keep the water surface as calm as possible. In the natural environment, the water surface of the paddy field is easily rippled by the wind or locally fluctuated when the water is flowing. These will all cause measurement errors. The height of the water body in the paddy field is not deep, which makes the error rate of water body measurement relatively large. To make the measurement result more accurate, part of the baffle is located below the water surface and part of the baffle is located above the water surface. A flow-through channel through which water can flow is also provided on the baffle. The flow-through channel is provided with a filter screen, so that the water surface inside the baffle is relatively calm. And because it can communicate with the water body, it essentially constitutes a set of communicating vessels, making the water surface height in the measurement space inside the baffle the same as the external water surface in real time, and better reflecting the real-time change of the water level in the paddy field.

[0031] As Figure 1 and Figure 5As shown, specifically, flow holes 16 through which water flows are provided on the baffle. The flow holes 16 are vertically elongated holes arranged in rows. There are multiple rows of flow holes 16 arranged along the height direction. By setting the flow holes 16 as vertically elongated holes, it is convenient to increase the coverage range of the flow holes 16 in the height direction, and it is also convenient for water to flow in through the vertically elongated holes at different heights. Moreover, the vertically elongated holes are relatively small in the width direction. When waves pass through these vertically elongated holes, they can be changed into finer waves under the blockage of the baffle between the flow holes 16, so that the water surface in the measurement space remains as calm as possible. A filter screen (not shown in the figure) is also fixed inside the flow holes 16 to filter out impurities from entering the box and causing sedimentation, keep the inside of the box as clean as possible, and prevent some seeds from entering the box and growing, which may lead to the inability to measure the water level. Arranging multiple rows of flow holes 16 along the height direction is also to increase the coverage range of the flow holes 16 in the height direction. Of course, in other embodiments, the flow holes can also be set as a single row, and the single-row flow holes extend a relatively large length in the height direction. Or, in other embodiments, the flow holes can be set as round holes. Or, in other embodiments, flow holes may no longer be provided on the baffle, but the soil body and the baffle are arranged at intervals, so that the water body flows through the gap between the bottom of the baffle and the soil body. Or, in other embodiments, the baffle may no longer be provided. At this time, the measuring device is an open measuring mechanism and no longer has a closed measuring space.

[0032] The water level sensor is a radar water level gauge 2, which is fixedly arranged on the frame. The radar water level gauge 2 is provided with a transmitting and receiving module, and the transmitting and receiving module is oriented towards the water surface. The transmitting and receiving module emits a signal to the water surface. After the signal is reflected at the water surface and received, the distance from the transmitting module to the water surface can be obtained based on the transmission time of the signal and the propagation speed of the signal. The radar water level gauge is a prior art, and its measurement principle and structural features will not be elaborated here. Of course, in other embodiments, the water level sensor can also be set as a laser rangefinder. The laser rangefinder emits laser light to a floating ball on the water surface and receives the laser light, and then obtains the distance between the laser tester and the water surface.

[0033] As Figure 3 and Figure 4As shown, the radar water level gauge 2 can only measure the distance from the water surface to the radar water level gauge 2 itself and cannot directly obtain the water level information. To facilitate the measurement of the water level, the position of the bottom of the water body needs to be known first, and the water level information can be obtained based on this. The measuring device further includes a bottom plate 41 directly below the transmitting module of the water level sensor. The bottom plate 41 is fixedly arranged on the surrounding baffle. The bottom plate 41 has a flat surface. Since both the radar water level gauge 2 and the bottom plate 41 are fixed on the frame, the distance between the upper surfaces of the radar water level gauge 2 and the bottom plate 41 is determined, that is, there is a set height distance between the radar water level gauge 2 and the bottom plate 41. The bottom plate 41 is horizontally arranged. During the installation of the frame, the bottom plate 41 needs to be installed below the water surface together with the frame and the upper surface of the bottom plate 41 should be flush with the upper surface of the soil in the paddy field. That is to say, at this time, the height of the soil body and the radar water level gauge 2 is the same as the height of the upper surface of the bottom plate 41 from the radar water level gauge 2. Then the depth of the water body is equal to the difference between the height of the upper surface of the bottom plate 41 from the radar water level gauge 2 and the height of the radar water level gauge 2 from the water surface. The setting of the bottom plate 41 makes the height of the radar water level gauge 2 from the soil body determined, which is convenient for testing the height of the water body. At the same time, the setting of the bottom plate 41 also makes the contact area between the bottom plate 41 and the soil body larger, so that the frame is not easy to shake and sink. Crops and weeds are likely to grow in the paddy field. If the crops and weeds are higher than the water surface, the electromagnetic wave signal of the radar water level gauge 2 will irradiate on the crops and weeds, affecting the detection of the water surface by the radar water level gauge 2. Through the setting of the bottom plate 41, the growth of weeds corresponding to the radar water level gauge 2 can also be avoided. At the same time, the bottom plate 41 and the surrounding baffle also enclose a fixed space, which can also prevent weeds growing in other places from invading the space detected by the radar water level gauge 2.

[0034] As Figure 6 and Figure 7As shown in the figure, in order to install the radar water level gauge 2, an installation bracket 3 for the radar water level gauge 2 is further provided on the frame body. An installation hole 34 is provided on the installation bracket 3 for the transmitting module and the receiving module to pass through and be arranged downward. The installation bracket 3 includes a fitting plate 31 for fitting and installing with the baffle plate, and the baffle plate substantially constitutes an installation plate for the installation bracket to be installed. The plate surface of the fitting plate 31 is fitted with the inner side surface of the installation plate. In order to facilitate the adjustment of the installation angle, the installation bracket is rotatably installed on the installation plate through a first rotating shaft, and a first arc-shaped guiding groove is provided on the installation plate. The center of the first arc-shaped guiding groove is located on the axis of the first rotating shaft. Three welding nuts are fixedly provided on the side of the fitting plate 31 facing away from the installation plate. One of the welding nuts is located on the axis of rotation of the installation bracket 3. The first rotating shaft is a screw adapted to this nut, and it is adapted to the screw to facilitate the formation of the first rotating shaft. Two first arc-shaped guiding grooves are provided. The two first arc-shaped guiding grooves are arranged at intervals in the same circumferential direction, and the two first arc-shaped guiding grooves respectively correspond to the positions of the other two nuts. These two welding nuts respectively form a first detachable fastener with the adapted screws. By fixing the welding nuts on the fitting plate 31, it is convenient to fixedly connect with the installation plate. By the first detachable fastener, it is convenient to adjust the position of the installation bracket 3 and the installation plate, and further adjust the orientation of the radar water level gauge 2 installed on the installation bracket 3. Of course, in other embodiments, the first detachable fastener can also be set as a stud fixedly provided on the fitting plate of the installation bracket and a nut adapted to the stud, where the stud passes through the first arc-shaped guiding groove and is threadedly engaged with the nut. Or, in other embodiments, three or more first arc-shaped guiding grooves can also be provided, or only one can be provided.

[0035] The setting of the first arc-shaped guide groove and the first detachable fastener enables the adjustment of the radar water level gauge 2 in one direction. To facilitate adjustment in more directions, the mounting bracket 3 further includes a first bracket and a second bracket 33 rotatably assembled on the first bracket. A second rotating shaft is provided on the second bracket 33, and the second rotating shaft is perpendicular to the first rotating shaft. The first bracket includes the fitting plate 31, and the mounting hole 34 is located on the second bracket 33. The first bracket further includes a guide plate 32 arranged perpendicular to the fitting plate 31. There are two guide plates 32, and the two guide plates 32 are respectively located at the ends of the fitting plate 31 and are flush with the edge of the end of the fitting plate 31. The fitting plate 31 and the guide plate 32 form a U-shaped structure. To strengthen the structural strength of the first bracket, a reinforcing plate 35 is further provided between the fitting plate 31 and the guide plate 32. The second bracket 33 is U-shaped, and the two side walls of the second bracket 33 respectively correspond to and are in contact with the two spaced-apart guide plates 32 one by one. The mounting hole 34 for the transmitting module to pass through on the mounting bracket 3 is provided on the bottom wall of the second bracket 33. Welding nuts are fixedly provided on the inner sides of the two side walls of the second bracket 33. Two welding nuts are provided on each side wall. One of the welding nuts is located on the rotation axis of the second bracket 33 relative to the first bracket, and the other corresponds to the second arc-shaped guide groove 321. The detachable fixed connection between the first bracket and the second bracket 33 is completed by the screw passing through the second arc-shaped guide groove 321 and being adapted to the nut. At this time, the screw and the nut form the second detachable fastener. Of course, in other embodiments, screws can also be provided on the second bracket. The screws pass through the second arc-shaped guide groove, and the detachable fixed connection between the second bracket and the first bracket is realized by installing additional nuts. Or, in other embodiments, the first bracket and the second bracket can also be not provided. At this time, the radar water level gauge can only be adjusted in one direction.

[0036] Since the plate surfaces of the fitting plate 31 and the guide plate 32 are perpendicular to each other, the second arc-shaped guide groove 321 is located on the guide plate 32, the first arc-shaped guide groove is parallel to the fitting plate 31, and the planes where the first arc-shaped guide groove and the second arc-shaped guide groove 321 are located are perpendicular to each other. That is, the rotation direction of the first bracket relative to the mounting plate and the rotation direction of the second bracket 33 relative to the first bracket are perpendicular to each other. The radar water level gauge 2 accordingly has adjustment amounts in two perpendicular directions. When adjustment is required, loosen the first detachable fastener or the second detachable fastener, adjust the corresponding direction, and after the adjustment is completed, tighten the corresponding detachable fastener to complete the adjustment and locking of the position of the radar water level gauge 2.

[0037] In addition to measuring the water level, the water quality of the paddy field can also affect the growth of paddy plants. Therefore, a water quality sensor 52 for detecting the water quality of the water body in the paddy field is also provided. The water quality sensor 52 is arranged in the measurement space. The presence of the water quality sensor 52 will increase the area of the measurement space, causing the water surface to easily fluctuate. Therefore, a vertically arranged partition plate 42 for dividing the measurement space into a water level measurement area and a water quality measurement area is also arranged in the measurement space. The water level sensor and the detector for water quality detection are respectively located on both sides of the partition plate. In this embodiment, the water quality sensor 52 is a conductivity sensor, and the condition of the water body is indirectly reflected by detecting the conductivity of the water body. Of course, in other embodiments, the detector for detecting the water quality can also be arranged outside the measurement space enclosed by the baffle. It should be noted that in order to detect the water quality of the water body, a water sample retention box 51 is also provided. The bottom of the water sample retention box 51 is lower than the bottom plate 41. A space for placing the water sample retention box 51 is dug in advance during installation. The transmitting module of the water quality sensor 52 is located in the water sample retention box 51 and lower than the bottom plate 41. In this way, when the paddy field dries up, there will still be a certain amount of water retained in the water sample retention box 51, so that the transmitting module of the water quality sensor 52 can always be in the water body, extending the service life of the water quality sensor 52.

[0038] This measuring device needs to work alone in the wild, so a separate power supply module is required. Specifically, in this embodiment, the power supply module is a solar panel 14, which converts solar energy into electrical energy through the solar panel 14. A small chassis is also arranged above the frame body. A wireless communication module 151, a power supply module 152, a power supply switch 153, a storage battery 154, and a data acquisition module 155 are arranged in the small chassis. This device can detect the water depth and water quality information of the paddy field. By setting the wireless communication module 151, it is convenient for personnel to understand this information in real time. The data acquisition module 155 is used to receive the information detected by each sensor, and transform this information into information such as water level height and water quality for personnel to read through the built-in algorithm. The wireless communication module 151 is used for the signal received by the data acquisition module 155, and accesses the Internet through 2G, 3G, and 4G full network access, and uploads the above data to the cloud platform for users to observe at any time. Of course, in order to operate at night or under poor lighting conditions, this measuring device also includes a storage battery 154 for storing electrical energy to store the electrical energy generated by the solar panel 14. In addition, in order to detect the power and power generation situation, a power supply module 152 is also provided. The power supply module 152 and the power supply switch 153 are connected to the solar panel 14 and control the power generation state of the solar panel 14.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. The patent protection scope of the present utility model shall be subject to the claims. Any equivalent structural changes made by using the content of the specification and drawings of the present utility model shall likewise be included within the protection scope of the present utility model.

Claims

1. An intelligent paddy field water depth measuring device, comprising a frame body for being fixed in a paddy field, and a water level sensor arranged on the frame body and arranged above the water surface during use to detect the distance to the water surface, characterized in that: The intelligent water depth measuring device for paddy fields further includes a bottom plate fixedly arranged on the frame body. The bottom plate is located below the water level sensor and is submerged below the water surface during use and is in contact with the soil surface at the bottom of the water. There is a set height distance between the bottom plate and the water level sensor to obtain the water depth through the difference from the measurement result of the water level sensor.

2. The intelligent paddy field water depth measuring device according to claim 1, characterized in that: The frame body includes a baffle plate that is partially submerged below the water surface during use. The baffle plate is provided with flow-through holes for water to flow through, and a filter screen is also arranged at the positions of the flow-through holes on the baffle plate. The baffle plate is used to enclose a measurement space communicated with the water body. The bottom plate is fixedly arranged on the baffle plate and is directly below the water level sensor.

3. The intelligent paddy field water depth measuring device according to claim 2, characterized in that: The baffle plate is provided with insertion parts for inserting into the soil in the paddy field.

4. The intelligent paddy field water depth measuring device according to any one of claims 1-3, characterized in that: An installation bracket for installing the water level sensor is fixed on the frame body. The installation bracket is provided with an installation hole through which the transmitting and receiving module of the water level sensor passes and is arranged downward.

5. The intelligent paddy field water depth measuring device according to claim 4, wherein: The installation bracket is rotatably arranged on the frame body. The frame body includes an installation plate for fixedly installing the installation bracket. The installation bracket includes a fitting plate for fitting with the installation plate. The fitting plate is rotatably installed on the installation plate through a first rotating shaft. The installation plate is provided with a first arc-shaped guiding groove with the center of the circle located on the axis of the first rotating shaft. The installation bracket and the installation plate are fixedly connected through a first detachable fastener passing through the first arc-shaped guiding groove.

6. The intelligent paddy field water depth measuring device according to claim 5, characterized in that: The installation bracket includes a first bracket and a second bracket rotatably assembled on the first bracket through a second rotating shaft. The second rotating shaft is perpendicular to the first rotating shaft. The first bracket includes the fitting plate, and the installation hole is located on the second bracket. The first bracket further includes a guiding plate arranged perpendicular to the fitting plate. The guiding plate is provided with a second arc-shaped guiding groove with the center of the circle located on the axis of the second rotating shaft. The first bracket and the second bracket are fixedly connected through a second detachable fastener passing through the second arc-shaped guiding groove.

7. The intelligent paddy field water depth measuring device according to claim 6, characterized in that: There are two guiding plates. The two guiding plates are arranged in parallel. The second bracket is located between the two guiding plates, and the second bracket is rotatably assembled with the guiding plates on both sides respectively.

8. The intelligent paddy field water depth measuring device according to claim 6, characterized in that: The second detachable fastener is a screw. The second bracket is provided with a screw through hole corresponding to the second arc-shaped guiding groove. A welding nut threadedly engaged with the screw is fixedly arranged on the inner side wall of the second bracket at the position of the screw through hole.

9. The intelligent paddy field water depth measuring device according to claim 5, characterized in that: There are at least two first arc-shaped guiding grooves. The multiple first arc-shaped guiding grooves are arranged at intervals in the same circumferential direction. The first detachable fasteners are arranged in one-to-one correspondence with the first arc-shaped guiding grooves.

10. The intelligent paddy field water depth measuring device according to claim 2 or 3, characterized in that: A detector for inserting into the water body to detect the water quality of the water body is further arranged in the measurement space. The intelligent water depth measuring device for paddy fields further includes a vertically arranged partition board. The detector and the water level sensor are respectively located on both sides of the partition board.

Images